1
|
Huang W, Lin M, Rikihisa Y. Rab27a via its effector JFC1 localizes to Anaplasma inclusions and promotes Anaplasma proliferation in leukocytes. Microbes Infect 2023:105278. [PMID: 38110148 DOI: 10.1016/j.micinf.2023.105278] [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: 11/03/2023] [Revised: 12/13/2023] [Accepted: 12/14/2023] [Indexed: 12/20/2023]
Abstract
Anaplasma phagocytophilum is an obligatory intracellular bacterium that causes tick-borne zoonosis called human granulocytic anaplasmosis. Mechanisms by which Anaplasma replicates inside of the membrane-bound compartment called "inclusion" in neutrophils are incompletely understood. A small GTPase Rab27a is found in the secretory granules and multivesicular endosomes. In this study we found Rab27a-containing granules were localized to Anaplasma inclusions in guanine nucleotide-dependent manner, and constitutively active Rab27a enhanced Anaplasma infection and dominant-negative Rab27a inhibited Anaplasma infection. Rab27a effector, JFC1 is known to mediate docking/fusion of Rab27a-bearing granules for exocytosis in leukocytes. shRNA stable knockdown of Rab27a or JFC1 inhibited Anaplasma infection in HL-60 cells. Similar to Rab27a, both endogenous and transfected JFC1 were localized to Anaplasma inclusions by immunostaining or live cell imaging. The JFC1 C2A domain that binds 3'-phosphoinositides, was sufficient and required for JFC1 and Rab27a localization to Anaplasma inclusions which were enriched with phosphatidylinositol 3-phosphate. Nexinhib20, the small molecule inhibitor specific to Rab27a and JFC1 binding, inhibited Anaplasma infection. Taken together, these results imply elevated phosphatidylinositol 3-phosphate in the inclusion membrane recruits JFC1 to mediate Rab27a-bearing granules/vesicles to dock/fuse with Anaplasma inclusions, the lumen of which is topologically equivalent to the exterior of the cell to benefit Anaplasma proliferation.
Collapse
Affiliation(s)
- Weiyan Huang
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH 43210, USA
| | - Mingqun Lin
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH 43210, USA
| | - Yasuko Rikihisa
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH 43210, USA.
| |
Collapse
|
2
|
Zhong Z, Li Z, Li Y, Jiang L, Kong Q, Chen W, Feng S. RhoA vesicle trafficking-mediated transglutaminase 2 membrane translocation promotes IgA1 mesangial deposition in IgA nephropathy. JCI Insight 2023; 8:e160374. [PMID: 37811653 PMCID: PMC10619437 DOI: 10.1172/jci.insight.160374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 08/24/2023] [Indexed: 10/10/2023] Open
Abstract
Transglutaminase 2 (TGase2) has been shown to contribute to the mesangial IgA1 deposition in a humanized mouse model of IgA nephropathy (IgAN), but the mechanism is not fully understood. In this study, we found that inhibition of TGase2 activity could dramatically decrease the amount of polymeric IgA1 (pIgA1) isolated from patients with IgAN that interacts with human mesangial cells (HMC). TGase2 was expressed both in the cytosol and on the membrane of HMC. Upon treatment with pIgA1, there were more TGase2 recruited to the membrane. Using a cell model of mesangial deposition of pIgA1, we identified 253 potential TGase2-associated proteins in the cytosolic fraction and observed a higher concentration of cellular vesicles and increased expression of Ras homolog family member A (RhoA) in HMC after pIgA1 stimulation. Both the amount of pIgA1 deposited on HMC and membrane TGase2 level were decreased by inhibition of the vesicle trafficking pathway. Mechanistically, TGase2 was found to be coprecipitated with RhoA in the cellular vesicles. Membrane TGase2 expression was greatly increased by overexpression of RhoA, while it was reduced by knockdown of RhoA. Our in vitro approach demonstrated that TGase2 was transported from the cytosol to the membrane through a RhoA-mediated vesicle-trafficking pathway that can facilitate pIgA1 interaction with mesangium in IgAN.
Collapse
Affiliation(s)
- Zhong Zhong
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat-Sen University) and Guangdong Provincial Key Laboratory of Nephrology, Guangzhou, China
| | - Zhijian Li
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat-Sen University) and Guangdong Provincial Key Laboratory of Nephrology, Guangzhou, China
| | - Yanjie Li
- Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Lanping Jiang
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat-Sen University) and Guangdong Provincial Key Laboratory of Nephrology, Guangzhou, China
| | - Qingyu Kong
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat-Sen University) and Guangdong Provincial Key Laboratory of Nephrology, Guangzhou, China
| | - Wei Chen
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat-Sen University) and Guangdong Provincial Key Laboratory of Nephrology, Guangzhou, China
| | - Shaozhen Feng
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- NHC Key Laboratory of Clinical Nephrology (Sun Yat-Sen University) and Guangdong Provincial Key Laboratory of Nephrology, Guangzhou, China
| |
Collapse
|
3
|
Ren J, Feng X, Guo Y, Kong D, Wang Y, Xiao J, Jiang W, Feng X, Liu X, Li A, Sun C, He M, Li B, Wang J, Jiang Y, Zheng C. GSK-3β/β-catenin pathway plays crucial roles in the regulation of NK cell cytotoxicity against myeloma cells. FASEB J 2023; 37:e22821. [PMID: 36794671 DOI: 10.1096/fj.202201658rr] [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: 10/11/2022] [Revised: 01/28/2023] [Accepted: 01/31/2023] [Indexed: 02/17/2023]
Abstract
The plasma cell malignancy, multiple myeloma (MM), has significantly improved by the application of new drugs and autologous hematopoietic stem cell transplantation. However, MM remains incurable. A number of studies have revealed an anti-MM effect of natural killer (NK) cells; however, their clinical efficacy is limited. Furthermore, glycogen synthase kinase (GSK)-3β inhibitors show an antitumor function. In this study, we aimed to evaluate the potential roles of a GSK-3β inhibitor (TWS119) in the regulation of NK cell cytotoxicity against MM. Our results showed that, in the presence of TWS119, the NK cell line, NK-92, and in vitro-expanded primary NK cells exhibited a significantly higher degranulation activity, expression of activating receptors, cellular cytotoxicity, and cytokine secretion when they were exposed to MM cells. Mechanistic studies indicated that TWS119 treatment markedly upregulated RAB27A expression, a key molecule for NK cell degranulation, and induced the colocalization of β-catenin with NF-κB in the nucleus of NK cells. More importantly, GSK-3β inhibition combined with the adoptive transfer of TWS119-treated NK-92 cells significantly reduced tumor volume and prolonged the survival time of myeloma-bearing mice. In summary, our novel findings suggest that targeting GSK-3β through the activation of β-catenin/NF-κB pathway may be an important approach to improve therapeutic efficacy of NK cell transfusion for MM.
Collapse
Affiliation(s)
- Jing Ren
- Department of Hematology, The Second Hospital of Shandong University, Jinan, Shandong, China.,Institute of Biotherapy for Hematological Malignancy, Shandong University, Jinan, Shandong, China
| | - Xiumei Feng
- Department of Hematology, The Fourth People's Hospital of Jinan City, Jinan, Shandong, China
| | - Yanan Guo
- Department of Hematology, The Second Hospital of Shandong University, Jinan, Shandong, China.,Institute of Biotherapy for Hematological Malignancy, Shandong University, Jinan, Shandong, China
| | - Dexiao Kong
- Department of Hematology, The Second Hospital of Shandong University, Jinan, Shandong, China.,Institute of Biotherapy for Hematological Malignancy, Shandong University, Jinan, Shandong, China
| | - Yongjing Wang
- Department of Hematology, The Second Hospital of Shandong University, Jinan, Shandong, China.,Institute of Biotherapy for Hematological Malignancy, Shandong University, Jinan, Shandong, China
| | - Juan Xiao
- Department of Hematology, The Second Hospital of Shandong University, Jinan, Shandong, China.,Institute of Biotherapy for Hematological Malignancy, Shandong University, Jinan, Shandong, China
| | - Wen Jiang
- Institute of Medical Sciences, The Second Hospital of Shandong University, Jinan, Shandong, China
| | - Xiaoli Feng
- Department of Clinical Laboratory, The Second Hospital of Shandong University, Jinan, Shandong, China
| | - Xiaoli Liu
- Department of Hematology, The Second Hospital of Shandong University, Jinan, Shandong, China.,Institute of Biotherapy for Hematological Malignancy, Shandong University, Jinan, Shandong, China
| | - Ai Li
- Department of Hematology, The Second Hospital of Shandong University, Jinan, Shandong, China.,Institute of Biotherapy for Hematological Malignancy, Shandong University, Jinan, Shandong, China
| | - Congcong Sun
- Department of Hematology, The Second Hospital of Shandong University, Jinan, Shandong, China.,Institute of Biotherapy for Hematological Malignancy, Shandong University, Jinan, Shandong, China
| | - Mingming He
- Department of Hematology, The Second Hospital of Shandong University, Jinan, Shandong, China.,Institute of Biotherapy for Hematological Malignancy, Shandong University, Jinan, Shandong, China
| | - Bingen Li
- R&D Department, Weihai Zhengsheng Biotechnology Co., Ltd, Weihai, China
| | - Juandong Wang
- Department of Hematology, The Second Hospital of Shandong University, Jinan, Shandong, China.,Institute of Biotherapy for Hematological Malignancy, Shandong University, Jinan, Shandong, China
| | - Yang Jiang
- Department of Hematology, The Second Hospital of Shandong University, Jinan, Shandong, China.,Institute of Biotherapy for Hematological Malignancy, Shandong University, Jinan, Shandong, China
| | - Chengyun Zheng
- Department of Hematology, The Second Hospital of Shandong University, Jinan, Shandong, China.,Institute of Biotherapy for Hematological Malignancy, Shandong University, Jinan, Shandong, China
| |
Collapse
|
4
|
Chen L, Xie W, Wu K, Meng Y, He Y, Cai J, Jiang Y, Zhao Q, Yang Y, Zhang M, Lu M, Lin S, Liang L, Zhang Z. Continuous nutrient supply culture strategy controls multivesicular endosomes pathway and anti-photo-aging miRNA cargo loading of extracellular vesicles. J Tissue Eng 2023; 14:20417314231197604. [PMID: 37674933 PMCID: PMC10478562 DOI: 10.1177/20417314231197604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 08/11/2023] [Indexed: 09/08/2023] Open
Abstract
Extracellular vesicle (EV) therapy recently had shown significant efficacy in various diseases. Serum starvation culture (SC) is one of the most widely used methods for collecting EVs. However, SC may cause inadvertent effects and eventually dampen the therapeutic potential of EVs. Therefore, we developed a novel method for EV collection, continuous nutrient supply culture (CC), which can provide an optimal condition for mesenchymal stem cells (MSCs) by continuously supplying essential nutrients to MSCs. By comparing with SC strategy, we revealed that CC could maintain CC-MSCs in a normal autophagy and apoptotic state, which reduced the shunting of EV precursors in cells and useless information material carried by EVs. In CC-MSCs, the expression levels of endosomal sorting complexes required for transport (ESCRT) and targeting GTPase27 (Rab27) were upregulated compared to those in SC-MSCs. Besides, we analyzed the membrane transport efficiency of EV formation, which demonstrated the CC strategy could promote the formation of EV precursors and the release of EVs. In addition, miRNA analysis revealed that CC-EVs were enriched with anti-chronic inflammatory factors, which could inhibit the nuclear factor kappa-B (NF-κB) pathway, mitigate chronic inflammation, and effectively repair skin photo-aging damage.
Collapse
Affiliation(s)
- Lihao Chen
- Translational Research Centre of Regenerative Medicine and 3D Printing of Guangzhou Medical University, Guangdong Province Engineering Research Center for Biomedical Engineering, State Key Laboratory of Respiratory Disease, Department of Orthopaedic Surgery, Medical Technology and Related Equipment Research for Spinal Injury Treatment, City Key Laboratory, The Third Affiliated Hospital of Guangzhou Medical University, School of Biomedical Engineering, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Weihan Xie
- Translational Research Centre of Regenerative Medicine and 3D Printing of Guangzhou Medical University, Guangdong Province Engineering Research Center for Biomedical Engineering, State Key Laboratory of Respiratory Disease, Department of Orthopaedic Surgery, Medical Technology and Related Equipment Research for Spinal Injury Treatment, City Key Laboratory, The Third Affiliated Hospital of Guangzhou Medical University, School of Biomedical Engineering, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Keke Wu
- Translational Research Centre of Regenerative Medicine and 3D Printing of Guangzhou Medical University, Guangdong Province Engineering Research Center for Biomedical Engineering, State Key Laboratory of Respiratory Disease, Department of Orthopaedic Surgery, Medical Technology and Related Equipment Research for Spinal Injury Treatment, City Key Laboratory, The Third Affiliated Hospital of Guangzhou Medical University, School of Biomedical Engineering, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Yuan Meng
- Translational Research Centre of Regenerative Medicine and 3D Printing of Guangzhou Medical University, Guangdong Province Engineering Research Center for Biomedical Engineering, State Key Laboratory of Respiratory Disease, Department of Orthopaedic Surgery, Medical Technology and Related Equipment Research for Spinal Injury Treatment, City Key Laboratory, The Third Affiliated Hospital of Guangzhou Medical University, School of Biomedical Engineering, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Yijun He
- Translational Research Centre of Regenerative Medicine and 3D Printing of Guangzhou Medical University, Guangdong Province Engineering Research Center for Biomedical Engineering, State Key Laboratory of Respiratory Disease, Department of Orthopaedic Surgery, Medical Technology and Related Equipment Research for Spinal Injury Treatment, City Key Laboratory, The Third Affiliated Hospital of Guangzhou Medical University, School of Biomedical Engineering, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Jiawei Cai
- Translational Research Centre of Regenerative Medicine and 3D Printing of Guangzhou Medical University, Guangdong Province Engineering Research Center for Biomedical Engineering, State Key Laboratory of Respiratory Disease, Department of Orthopaedic Surgery, Medical Technology and Related Equipment Research for Spinal Injury Treatment, City Key Laboratory, The Third Affiliated Hospital of Guangzhou Medical University, School of Biomedical Engineering, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Yuan Jiang
- Translational Research Centre of Regenerative Medicine and 3D Printing of Guangzhou Medical University, Guangdong Province Engineering Research Center for Biomedical Engineering, State Key Laboratory of Respiratory Disease, Department of Orthopaedic Surgery, Medical Technology and Related Equipment Research for Spinal Injury Treatment, City Key Laboratory, The Third Affiliated Hospital of Guangzhou Medical University, School of Biomedical Engineering, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Qi Zhao
- Translational Research Centre of Regenerative Medicine and 3D Printing of Guangzhou Medical University, Guangdong Province Engineering Research Center for Biomedical Engineering, State Key Laboratory of Respiratory Disease, Department of Orthopaedic Surgery, Medical Technology and Related Equipment Research for Spinal Injury Treatment, City Key Laboratory, The Third Affiliated Hospital of Guangzhou Medical University, School of Biomedical Engineering, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Yixi Yang
- Translational Research Centre of Regenerative Medicine and 3D Printing of Guangzhou Medical University, Guangdong Province Engineering Research Center for Biomedical Engineering, State Key Laboratory of Respiratory Disease, Department of Orthopaedic Surgery, Medical Technology and Related Equipment Research for Spinal Injury Treatment, City Key Laboratory, The Third Affiliated Hospital of Guangzhou Medical University, School of Biomedical Engineering, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Minru Zhang
- Translational Research Centre of Regenerative Medicine and 3D Printing of Guangzhou Medical University, Guangdong Province Engineering Research Center for Biomedical Engineering, State Key Laboratory of Respiratory Disease, Department of Orthopaedic Surgery, Medical Technology and Related Equipment Research for Spinal Injury Treatment, City Key Laboratory, The Third Affiliated Hospital of Guangzhou Medical University, School of Biomedical Engineering, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Manping Lu
- Yue Dong Hospital District of Third Affiliated Hospital of Sun Yat-Sen University, Meizhou, Guangdong, China
| | - Shaozhang Lin
- Translational Research Centre of Regenerative Medicine and 3D Printing of Guangzhou Medical University, Guangdong Province Engineering Research Center for Biomedical Engineering, State Key Laboratory of Respiratory Disease, Department of Orthopaedic Surgery, Medical Technology and Related Equipment Research for Spinal Injury Treatment, City Key Laboratory, The Third Affiliated Hospital of Guangzhou Medical University, School of Biomedical Engineering, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Lin Liang
- Translational Research Centre of Regenerative Medicine and 3D Printing of Guangzhou Medical University, Guangdong Province Engineering Research Center for Biomedical Engineering, State Key Laboratory of Respiratory Disease, Department of Orthopaedic Surgery, Medical Technology and Related Equipment Research for Spinal Injury Treatment, City Key Laboratory, The Third Affiliated Hospital of Guangzhou Medical University, School of Biomedical Engineering, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Zhiyong Zhang
- Translational Research Centre of Regenerative Medicine and 3D Printing of Guangzhou Medical University, Guangdong Province Engineering Research Center for Biomedical Engineering, State Key Laboratory of Respiratory Disease, Department of Orthopaedic Surgery, Medical Technology and Related Equipment Research for Spinal Injury Treatment, City Key Laboratory, The Third Affiliated Hospital of Guangzhou Medical University, School of Biomedical Engineering, Guangzhou Medical University, Guangzhou, Guangdong, China
| |
Collapse
|
5
|
Li Q, Zhao H, Dong W, Guan N, Hu Y, Zeng Z, Zhang H, Zhang F, Li Q, Yang J, Xiao W. RAB27A promotes the proliferation and invasion of colorectal cancer cells. Sci Rep 2022; 12:19359. [PMID: 36371494 PMCID: PMC9653419 DOI: 10.1038/s41598-022-23696-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 11/03/2022] [Indexed: 11/13/2022] Open
Abstract
Colorectal cancer (CRC) is one of the most commonly diagnosed cancer types worldwide. Despite significant advances in prevention and diagnosis, CRC is still one of the leading causes of cancer-related mortality globally. RAB27A, the member of RAB27 family of small GTPases, is the critical protein for intracellular secretion and has been reported to promote tumor progression. However, it is controversial for the role of RAB27A in CRC progression, so we explored the exact function of RAB27A in CRC development in this study. Based on the stable colon cancer cell lines of RAB27A knockdown and ectopic expression, we found that RAB27A knockdown inhibited proliferation and clone formation of SW480 colon cancer cells, whereas ectopic expression of RAB27A in RKO colon cancer cells facilitated cell proliferation and clone formation, indicating that RAB27A is critical for colon cancer cell growth. In addition, our data demonstrated that the migration and invasion of colon cancer cells were suppressed by RAB27A knockdown, but promoted by RAB27A ectopic expression. Therefore, RAB27A is identified as an onco-protein in mediating CRC development, which may be a valuable prognostic indicator and potential therapeutic target for CRC.
Collapse
Affiliation(s)
- Qingyan Li
- grid.454145.50000 0000 9860 0426Graduate School of Jinzhou Medical University, Liaoning, 121001 China ,grid.414252.40000 0004 1761 8894Senior Department of Oncology, the Fifth Medical Center of PLA General Hospital, Beijing, 100071 China ,Department of Oncology, Suining Central Hospital, Sichuan, 629300 China
| | - Huixia Zhao
- grid.414252.40000 0004 1761 8894Department of Oncology, 4th Medical Center of PLA General Hospital, Beijing, 100048 China
| | - Weiwei Dong
- grid.414252.40000 0004 1761 8894Senior Department of Oncology, the Fifth Medical Center of PLA General Hospital, Beijing, 100071 China
| | - Na Guan
- grid.454145.50000 0000 9860 0426Graduate School of Jinzhou Medical University, Liaoning, 121001 China ,grid.414252.40000 0004 1761 8894Senior Department of Oncology, the Fifth Medical Center of PLA General Hospital, Beijing, 100071 China
| | - Yanyan Hu
- grid.414252.40000 0004 1761 8894Senior Department of Oncology, the Fifth Medical Center of PLA General Hospital, Beijing, 100071 China
| | - Zhiyan Zeng
- grid.414252.40000 0004 1761 8894Department of Oncology, 4th Medical Center of PLA General Hospital, Beijing, 100048 China
| | - He Zhang
- grid.414252.40000 0004 1761 8894Department of Oncology, 4th Medical Center of PLA General Hospital, Beijing, 100048 China
| | - Fengyun Zhang
- grid.414252.40000 0004 1761 8894Department of Oncology, 4th Medical Center of PLA General Hospital, Beijing, 100048 China
| | - Qiuwen Li
- grid.414252.40000 0004 1761 8894Senior Department of Oncology, the Fifth Medical Center of PLA General Hospital, Beijing, 100071 China
| | - Jingwen Yang
- grid.414252.40000 0004 1761 8894Senior Department of Oncology, the Fifth Medical Center of PLA General Hospital, Beijing, 100071 China
| | - Wenhua Xiao
- grid.454145.50000 0000 9860 0426Graduate School of Jinzhou Medical University, Liaoning, 121001 China ,grid.414252.40000 0004 1761 8894Senior Department of Oncology, the Fifth Medical Center of PLA General Hospital, Beijing, 100071 China
| |
Collapse
|
6
|
Babina M, Franke K, Bal G. How "Neuronal" Are Human Skin Mast Cells? Int J Mol Sci 2022; 23:ijms231810871. [PMID: 36142795 PMCID: PMC9505265 DOI: 10.3390/ijms231810871] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 09/05/2022] [Accepted: 09/14/2022] [Indexed: 11/24/2022] Open
Abstract
Mast cells are evolutionarily old cells and the principal effectors in allergic responses and inflammation. They are seeded from the yolk sac during embryogenesis or are derived from hematopoietic progenitors and are therefore related to other leukocyte subsets, even though they form a separate clade in the hematopoietic system. Herein, we systematically bundle information from several recent high-throughput endeavors, especially those comparing MCs with other cell types, and combine such information with knowledge on the genes’ functions to reveal groups of neuronal markers specifically expressed by MCs. We focus on recent advances made regarding human tissue MCs, but also refer to studies in mice. In broad terms, genes hyper-expressed in MCs, but largely inactive in other myelocytes, can be classified into subcategories such as traffic/lysosomes (MLPH and RAB27B), the dopamine system (MAOB, DRD2, SLC6A3, and SLC18A2), Ca2+-related entities (CALB2), adhesion molecules (L1CAM and NTM) and, as an overall principle, the transcription factors and modulators of transcriptional activity (LMO4, PBX1, MEIS2, and EHMT2). Their function in MCs is generally unknown but may tentatively be deduced by comparison with other systems. MCs share functions with the nervous system, as they express typical neurotransmitters (histamine and serotonin) and a degranulation machinery that shares features with the neuronal apparatus at the synapse. Therefore, selective overlaps are plausible, and they further highlight the uniqueness of MCs within the myeloid system, as well as when compared with basophils. Apart from investigating their functional implications in MCs, a key question is whether their expression in the lineage is due to the specific reactivation of genes normally silenced in leukocytes or whether the genes are not switched off during mastocytic development from early progenitors.
Collapse
Affiliation(s)
- Magda Babina
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Immunology and Allergology IA, 12203 Berlin, Germany
- Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt Universität zu Berlin, Institute of Allergology, Hindenburgdamm 30, 12203 Berlin, Germany
- Correspondence:
| | - Kristin Franke
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Immunology and Allergology IA, 12203 Berlin, Germany
- Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt Universität zu Berlin, Institute of Allergology, Hindenburgdamm 30, 12203 Berlin, Germany
| | - Gürkan Bal
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Immunology and Allergology IA, 12203 Berlin, Germany
- Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt Universität zu Berlin, Institute of Allergology, Hindenburgdamm 30, 12203 Berlin, Germany
| |
Collapse
|
7
|
The biogenesis and secretion of exosomes and multivesicular bodies (MVBs): Intercellular shuttles and implications in human diseases. Genes Dis 2022. [PMID: 37492712 PMCID: PMC10363595 DOI: 10.1016/j.gendis.2022.03.021] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Exosomes carry and transmit signaling molecules used for intercellular communication. The generation and secretion of exosomes is a multistep interlocking process that allows simultaneous control of multiple regulatory sites. Protein molecules, mainly RAB GTPases, cytoskeletal proteins and soluble N-ethylmaleimide-sensitive fusion attachment protein receptor (SNARE), are specifically regulated in response to pathological conditions such as altered cellular microenvironment, stimulation by pathogenic factors, or gene mutation. This interferes with the smooth functioning of endocytosis, translocation, degradation, docking and fusion processes, leading to changes in the secretion of exosomes. Large numbers of secreted exosomes are disseminated by the flow of body fluids and absorbed by the recipient cells. By transmitting characteristic functional proteins and genetic information produced under disease conditions, exosomes can change the physiological state of the recipient cells and their microenvironment. The microenvironment, in turn, affects the occurrence and development of disease. Therefore, this review will discuss the mechanism by which exosome secretion is regulated in cells following the formation of mature secretory multivesicular bodies (MVBs). The overall aim is to find ways to eliminate disease-derived exosomes at their source, thereby providing an important new basis for the clinical treatment of disease.
Collapse
|
8
|
Chen X, Li Q, Zhang Z, Yang M, Wang E. Identification of Potential Diagnostic Biomarkers From Circulating Cells During the Course of Sleep Deprivation-Related Myocardial Infarction Based on Bioinformatics Analyses. Front Cardiovasc Med 2022; 9:843426. [PMID: 35369343 PMCID: PMC8969017 DOI: 10.3389/fcvm.2022.843426] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Accepted: 02/22/2022] [Indexed: 01/01/2023] Open
Abstract
Background Myocardial infarction (MI) is the leading cause of death from non-infectious diseases worldwide and results in rapid deterioration due to the sudden rupture of plaques associated with atherosclerosis, a chronic inflammatory disease. Sleep is a key factor that regulates immune homeostasis of the body. The imbalance in circulating immune cells caused by sleep deprivation (SD) may represent a risk factor leading to the rapid deterioration of plaques and MI. Therefore, it is of profound significance to identify diagnostic biomarkers for preventing SD-related MI. Methods In the present study, we identified coexpressed differentially expressed genes (co-DEGs) between peripheral blood mononuclear cells from MI and SD samples (compared to controls) from a public database. LASSO regression analysis was applied to identify significant diagnostic biomarkers from co-DEGs. Moreover, receiver operating characteristic (ROC) curve analysis was performed to test biomarker accuracy and diagnostic ability. We further analyzed immune cell enrichment in MI and SD samples using the CIBERSORT algorithm, and the correlation between biomarkers and immune cell composition was assessed. We also investigated whether diagnostic biomarkers are involved in immune cell signaling pathways in SD-related MI processes. Results A total of 10 downregulated co-DEGs from the sets of MI-DEGs and SD-DEGs were overlapped. After applying LASSO regression analysis, SYTL2, KLRD1, and C12orf75 were selected and validated as diagnostic biomarkers using ROC analysis. Next, we found that resting NK cells were downregulated in both the MI samples and SD samples, which is similar to the changes noted for SYTL2. Importantly, SYTL2 was strongly positively correlated not only with resting NK cells but also with most genes related to NK cell markers in the MI and SD datasets. Moreover, SYTL2 was highly associated with genes in NK cell signaling pathways, including the MAPK signaling pathway, cytotoxic granule movement and exocytosis, and NK cell activation. Furthermore, GSEA and KEGG analyses provided evidence that the DEGs identified from MI samples with low vs. high SYTL2 expression exhibited a strong association with the regulation of the immune response and NK cell-mediated cytotoxicity. Conclusion In conclusion, SYTL2, KLRD1, and C12orf75 represent potential diagnostic biomarkers of MI. The association between SYTL2 and resting NK cells may be critically involved in SD-related MI development and occurrence.
Collapse
Affiliation(s)
- Xiang Chen
- Department of Anesthesiology, Xiangya Hospital Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders (Xiangya Hospital), Xiangya Hospital Central South University, Changsha, China
| | - Qian Li
- Department of Anesthesiology, Xiangya Hospital Central South University, Changsha, China
| | - Zhong Zhang
- Department of Anesthesiology, Xiangya Hospital Central South University, Changsha, China
| | - Minjing Yang
- Department of Anesthesiology, Xiangya Hospital Central South University, Changsha, China
| | - E. Wang
- Department of Anesthesiology, Xiangya Hospital Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders (Xiangya Hospital), Xiangya Hospital Central South University, Changsha, China
- *Correspondence: E. Wang
| |
Collapse
|
9
|
Small AG, Perveen K, Putty T, Patel N, Quinn P, Wechalekar MD, Hii CS, Quach A, Ferrante A. Neutrophils Require Activation to Express Functional Cell-Surface Complement Receptor Immunoglobulin. Front Immunol 2022; 13:840510. [PMID: 35317169 PMCID: PMC8934411 DOI: 10.3389/fimmu.2022.840510] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 02/16/2022] [Indexed: 11/13/2022] Open
Abstract
The phagocytosis-promoting complement receptor, Complement Receptor Immunoglobulin (CRIg), is exclusively expressed on macrophages. It has been demonstrated that expression in macrophages could be modulated by inflammatory mediators, including cytokines. This raised the possibility that a major phagocyte, the neutrophil, may also express CRIg following activation with inflammatory mediators. Here we show that resting peripheral blood neutrophil lysates subjected to protein analysis by Western blot revealed a 35 kDa CRIg isoform, consistent with the expression of CRIg mRNA by RT-PCR. By flow cytometry, CRIg was detected intracellularly and in very minor amounts on the cell surface. Interestingly, expression on the cell surface was significantly increased to functional levels after activation with inflammatory mediators/neutrophil activators; N-Formylmethionine-leucyl-phenylalanine, tumor necrosis factor (TNF), Granulocyte-Macrophage Colony stimulating Factor (GM-CSF), bacterial lipopolysaccharide, leukotriene B4 and phorbol myristate acetate. The increase in expression required p38 MAP kinase and protein kinase C activation, as well as intracellular calcium. Neutrophils which were defective in actin microfilament reorganization due to a mutation in ARPC1B or inhibition of its upstream regulator, Rac2 lose their ability to upregulate CRIg expression. Inhibition of another small GTPase, Rab27a, with pharmacological inhibitors prevented the increase in CRIg expression, suggesting a requirement for the actin cytoskeleton and exocytosis. Engagement of CRIg on TNF-primed neutrophils with an anti-CRIg monoclonal antibody increased the release of superoxide and promoted the activation of p38 but not ERK1/ERK2 or JNK MAP kinases. The TNF-induced increase in killing of Staphylococcus aureus was blocked by the anti-CRIg antibody. Adding to the anti-microbial role of CRIg, it was found that GM-CSF priming lead to the release of neutrophil extracellular traps. Interestingly in contrast to the above mediators the anti-inflammatory cytokine IL-10 caused a decrease in basal expression and GM-CSF induced increase in CRIg expression. The data demonstrate that neutrophils also express CRIg which is regulated by inflammatory mediators and cytokines. The findings show that the neutrophil antimicrobial function involving CRIg requires priming as a means of arming the cell strategically with microbial invasion of tissues and the bloodstream.
Collapse
Affiliation(s)
- Annabelle G. Small
- Department of Immunopathology, South Australia (SA) Pathology, Women’s and Children’s Hospital, North Adelaide, SA, Australia
- Department of Molecular and Biomedical Science, School of Biological Sciences, University of Adelaide, North Adelaide, SA, Australia
- Robinson Research Institute and Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
- Rheumatology Department, College of Medicine and Public Health, Flinders Medical Centre, Flinders University, Bedfort Park, SA, Australia
| | - Khalida Perveen
- Department of Immunopathology, South Australia (SA) Pathology, Women’s and Children’s Hospital, North Adelaide, SA, Australia
- Robinson Research Institute and Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
| | - Trishni Putty
- Department of Immunopathology, South Australia (SA) Pathology, Women’s and Children’s Hospital, North Adelaide, SA, Australia
- Robinson Research Institute and Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
| | - Nikita Patel
- Department of Immunopathology, South Australia (SA) Pathology, Women’s and Children’s Hospital, North Adelaide, SA, Australia
- Robinson Research Institute and Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
| | - Patrick Quinn
- Robinson Research Institute and Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
- Department of Allergy and Immunology, Women’s and Children’s Health Network, North Adelaide, SA, Australia
| | - Mihir D. Wechalekar
- Rheumatology Department, College of Medicine and Public Health, Flinders Medical Centre, Flinders University, Bedfort Park, SA, Australia
| | - Charles S. Hii
- Department of Immunopathology, South Australia (SA) Pathology, Women’s and Children’s Hospital, North Adelaide, SA, Australia
- Robinson Research Institute and Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
| | - Alex Quach
- Department of Immunopathology, South Australia (SA) Pathology, Women’s and Children’s Hospital, North Adelaide, SA, Australia
- Robinson Research Institute and Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
| | - Antonio Ferrante
- Department of Immunopathology, South Australia (SA) Pathology, Women’s and Children’s Hospital, North Adelaide, SA, Australia
- Department of Molecular and Biomedical Science, School of Biological Sciences, University of Adelaide, North Adelaide, SA, Australia
- Robinson Research Institute and Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
- *Correspondence: Antonio Ferrante,
| |
Collapse
|
10
|
Zhou W, Zheng X, Cheng C, Guo G, Zhong Y, Liu W, Liu K, Chen Y, Liu S, Liu S. Rab27a deletion impairs the therapeutic potential of endothelial progenitor cells for myocardial infarction. Mol Cell Biochem 2020; 476:797-807. [PMID: 33095380 DOI: 10.1007/s11010-020-03945-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 10/10/2020] [Indexed: 12/14/2022]
Abstract
Endothelial progenitor cell (EPC) transplantation has shown advantages in the treatment of myocardial infarction (MI) in animal models and clinical trials through mechanisms of direct intercellular contacts, autocrine, and paracrine. However, the effects of EPC transplantation for MI treatment remain controversial and the underlying mechanisms have not been fully elucidated. Here, we explored the role of Rab27a in the therapeutic potential of EPC transplantation in MI. We found that Rab27a knockout impaired the viability, and reduced the proliferation and tube formation function of ECPs. The recovery of cardiac function and improvement of ventricular remodeling from EPCs transplantation were significantly damaged by Rab27a deletion in vivo. Rab27a deletion inhibited the protein expression of phosphoinositide 3-kinase (PI3K) and cyclin D1 and the phosphorylation levels of Akt and FoxO3a. Therefore, Rab27a knockout suppressed the PI3K-Akt-FoxO3a/cyclin D1 signaling pathway. Furthermore, Rab27a ablation dramatically reduced exosome release in EPCs. These results demonstrated that Rab27a plays an essential role in EPC functions. The elucidation of this mechanism provides novel insights into EPC transplantation as a promising treatment for post-MI injuries.
Collapse
Affiliation(s)
- Wenyi Zhou
- Guangzhou Institute of Cardiovascular Disease, Guangdong Key Laboratory of Vascular Diseases, State Key Laboratory of Respiratory Disease, the Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, 510260, People's Republic of China
| | - Xuefei Zheng
- Guangzhou Institute of Cardiovascular Disease, Guangdong Key Laboratory of Vascular Diseases, State Key Laboratory of Respiratory Disease, the Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, 510260, People's Republic of China
| | - Chuanfang Cheng
- Guangzhou Institute of Cardiovascular Disease, Guangdong Key Laboratory of Vascular Diseases, State Key Laboratory of Respiratory Disease, the Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, 510260, People's Republic of China
| | - Guixian Guo
- Guangzhou Institute of Cardiovascular Disease, Guangdong Key Laboratory of Vascular Diseases, State Key Laboratory of Respiratory Disease, the Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, 510260, People's Republic of China
| | - Yun Zhong
- Guangzhou Institute of Cardiovascular Disease, Guangdong Key Laboratory of Vascular Diseases, State Key Laboratory of Respiratory Disease, the Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, 510260, People's Republic of China
| | - Weihua Liu
- Guangzhou Institute of Cardiovascular Disease, Guangdong Key Laboratory of Vascular Diseases, State Key Laboratory of Respiratory Disease, the Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, 510260, People's Republic of China
| | - Kefeng Liu
- Department of Histology and Embryology, School of Basic Medical Sciences, Xiangnan University, Chenzhou, Hunan, 423000, People's Republic of China
| | - Yanfang Chen
- Department of Pharmacology and Toxicology, Boonshoft School of Medicine, Wright State University, Dayton, OH, 45435, USA
| | - Shiming Liu
- Guangzhou Institute of Cardiovascular Disease, Guangdong Key Laboratory of Vascular Diseases, State Key Laboratory of Respiratory Disease, the Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, 510260, People's Republic of China.
| | - Shaojun Liu
- Guangzhou Institute of Cardiovascular Disease, Guangdong Key Laboratory of Vascular Diseases, State Key Laboratory of Respiratory Disease, the Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, 510260, People's Republic of China.
| |
Collapse
|
11
|
Ku KE, Choi N, Sung JH. Inhibition of Rab27a and Rab27b Has Opposite Effects on the Regulation of Hair Cycle and Hair Growth. Int J Mol Sci 2020; 21:ijms21165672. [PMID: 32784729 PMCID: PMC7460818 DOI: 10.3390/ijms21165672] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 08/02/2020] [Accepted: 08/05/2020] [Indexed: 02/07/2023] Open
Abstract
Rab27a/b are known to play an important role in the transport of melanosomes, with their knockout causing silvery gray hair. However, the relationship between Rab27a/b and hair growth is not well known. To evaluate the role of Rab27a/b in hair cycle, we investigated the expression of Rab27a/b during hair cycling and human outer root sheath (hORS) cells. The expression of Rab27a in ORS cells was mainly detected at the anagen, whereas expression of Rab27b in ORS, and epidermal cells was strongly expressed at the telogen. Additionally, Rab27a/b were expressed in the Golgi of hORS cells. To evaluate the role of Rab27a/b in hair growth, telogen-to-anagen transition animal and vibrissae hair follicles (HFs) organ culture models were assayed using Rab27a/b siRNAs. The knockdown of Rab27a or Rab27b suppressed or promoted hair growth, respectively. These results were also confirmed in human dermal papilla cells (hDPCs) and hORS cells, showing the opposite mitogenic effects. Moreover, Rab27b knockdown increased the expression levels of various growth factors in the hDPCs and hORS cells. Overall, the opposite temporal expression patterns during hair cycling and roles for hair growth of Rab27a/b suggested that Rab27a/b might regulate the hair cycle. Therefore, our study may provide a novel solution for the development of hair loss treatment by regulating Rab27a/b levels.
Collapse
Affiliation(s)
- Kyung-Eun Ku
- College of Pharmacy, Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon 21983, Korea;
| | | | - Jong-Hyuk Sung
- College of Pharmacy, Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon 21983, Korea;
- STEMORE Co. Ltd., Incheon 21983, Korea;
- Correspondence: ; Tel.: +82-32-749-4506
| |
Collapse
|
12
|
Alzahofi N, Welz T, Robinson CL, Page EL, Briggs DA, Stainthorp AK, Reekes J, Elbe DA, Straub F, Kallemeijn WW, Tate EW, Goff PS, Sviderskaya EV, Cantero M, Montoliu L, Nedelec F, Miles AK, Bailly M, Kerkhoff E, Hume AN. Rab27a co-ordinates actin-dependent transport by controlling organelle-associated motors and track assembly proteins. Nat Commun 2020; 11:3495. [PMID: 32661310 PMCID: PMC7359353 DOI: 10.1038/s41467-020-17212-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Accepted: 06/04/2020] [Indexed: 11/09/2022] Open
Abstract
Cell biologists generally consider that microtubules and actin play complementary roles in long- and short-distance transport in animal cells. On the contrary, using melanosomes of melanocytes as a model, we recently discovered that the motor protein myosin-Va works with dynamic actin tracks to drive long-range organelle dispersion in opposition to microtubules. This suggests that in animals, as in yeast and plants, myosin/actin can drive long-range transport. Here, we show that the SPIRE-type actin nucleators (predominantly SPIRE1) are Rab27a effectors that co-operate with formin-1 to generate actin tracks required for myosin-Va-dependent transport in melanocytes. Thus, in addition to melanophilin/myosin-Va, Rab27a can recruit SPIREs to melanosomes, thereby integrating motor and track assembly activity at the organelle membrane. Based on this, we suggest a model in which organelles and force generators (motors and track assemblers) are linked, forming an organelle-based, cell-wide network that allows their collective activity to rapidly disperse the population of organelles long-distance throughout the cytoplasm.
Collapse
Affiliation(s)
- Noura Alzahofi
- School of Life Sciences, University of Nottingham, Nottingham, NG7 2UH, UK
| | - Tobias Welz
- University Hospital Regensburg, Regensburg, Germany
| | | | - Emma L Page
- School of Life Sciences, University of Nottingham, Nottingham, NG7 2UH, UK
| | - Deborah A Briggs
- School of Life Sciences, University of Nottingham, Nottingham, NG7 2UH, UK
| | - Amy K Stainthorp
- School of Life Sciences, University of Nottingham, Nottingham, NG7 2UH, UK
| | - James Reekes
- School of Life Sciences, University of Nottingham, Nottingham, NG7 2UH, UK
| | - David A Elbe
- School of Life Sciences, University of Nottingham, Nottingham, NG7 2UH, UK
| | - Felix Straub
- University Hospital Regensburg, Regensburg, Germany
| | - Wouter W Kallemeijn
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, London, W12 0BZ, UK
| | - Edward W Tate
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, London, W12 0BZ, UK
| | - Philip S Goff
- Cell Biology and Genetics Research Centre, St. George's, University of London, London, SW17 0RE, UK
| | - Elena V Sviderskaya
- Cell Biology and Genetics Research Centre, St. George's, University of London, London, SW17 0RE, UK
| | - Marta Cantero
- Centro Nacional de Biotecnologia (CNB-CSIC), Madrid, 28049, Spain
- CIBERER-ISCIII, Madrid, Spain
| | - Lluis Montoliu
- Centro Nacional de Biotecnologia (CNB-CSIC), Madrid, 28049, Spain
- CIBERER-ISCIII, Madrid, Spain
| | - Francois Nedelec
- Sainsbury Laboratory, Cambridge University, Cambridge, CB2 1LR, UK
| | - Amanda K Miles
- John van Geest Cancer Research Centre, Nottingham Trent University, Nottingham, NG11 8NS, UK
| | - Maryse Bailly
- UCL Institute of Ophthalmology, 11-43 Bath St, London, EC1V 9EL, UK
| | | | - Alistair N Hume
- School of Life Sciences, University of Nottingham, Nottingham, NG7 2UH, UK.
| |
Collapse
|
13
|
Zhang X, Huang TY, Yancey J, Luo H, Zhang YW. Role of Rab GTPases in Alzheimer's Disease. ACS Chem Neurosci 2019; 10:828-838. [PMID: 30261139 DOI: 10.1021/acschemneuro.8b00387] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Alzheimer's disease (AD) comprises two major pathological hallmarks: extraneuronal deposition of β-amyloid (Aβ) peptides ("senile plaques") and intraneuronal aggregation of the microtubule-associated protein tau ("neurofibrillary tangles"). Aβ is derived from sequential cleavage of the β-amyloid precursor protein by β- and γ-secretases, while aggregated tau is hyperphosphorylated in AD. Mounting evidence suggests that dysregulated trafficking of these AD-related proteins contributes to AD pathogenesis. Rab proteins are small GTPases that function as master regulators of vesicular transport and membrane trafficking. Multiple Rab GTPases have been implicated in AD-related protein trafficking, and their expression has been observed to be altered in postmortem AD brain. Here we review current implicated roles of Rab GTPase dysregulation in AD pathogenesis. Further elucidation of the pathophysiological role of Rab GTPases will likely reveal novel targets for AD therapeutics.
Collapse
Affiliation(s)
- Xian Zhang
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, Medical College of Xiamen University, Xiamen, Fujian 361102, China
| | - Timothy Y. Huang
- Neuroscience Initiative, Sanford-Burnham-Prebys Medical Discovery Institute, La Jolla, California 92037, United States
| | - Joel Yancey
- Neuroscience Initiative, Sanford-Burnham-Prebys Medical Discovery Institute, La Jolla, California 92037, United States
| | - Hong Luo
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, Medical College of Xiamen University, Xiamen, Fujian 361102, China
| | - Yun-wu Zhang
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, Medical College of Xiamen University, Xiamen, Fujian 361102, China
| |
Collapse
|
14
|
Feng F, Jiang Y, Lu H, Lu X, Wang S, Wang L, Wei M, Lu W, Du Z, Ye Z, Yang G, Yuan F, Ma Y, Lei X, Lu Z. Rab27A mediated by NF-κB promotes the stemness of colon cancer cells via up-regulation of cytokine secretion. Oncotarget 2018; 7:63342-63351. [PMID: 27556511 PMCID: PMC5325368 DOI: 10.18632/oncotarget.11454] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Accepted: 08/11/2016] [Indexed: 12/21/2022] Open
Abstract
Recent evidences have unveiled critical roles of cancer stem cells (CSCs) in tumorigenicity, but how interactions between CSC and tumor environments help maintain CSC initiation remains obscure. The small GTPases Rab27A regulates autocrine and paracrine cytokines by monitoring exocytosis of extracellular vesicles, and is reported to promote certain tumor progression. We observe that overexpression of Rab27A increased sphere formation efficiency (SFE) by increasing the proportion of CD44+ and PKH26high cells in HT29 cell lines, and accelerating the growth of colosphere with higher percentage of cells at S phase. Mechanism study revealed that the supernatant derived from HT29 sphere after Rab27A overexpression was able to expand sphere numbers with elevated secretion of VEGF and TGF-β. In tumor implanting nude mice model, tumor initiation rates and tumor sizes were enhanced by Rab27A with obvious angiogenesis. As a contrast, knocking down Rab27A impaired the above effects. More importantly, the correlation between higher p65 level and Rab27A in colon sphere was detected, p65 was sufficient to induce up-regulation of Rab27A and a functional NF-κB binding site in the Rab27A promoter was demonstrated. Altogether, our findings reveal a unique mechanism that tumor environment related NF-κB signaling promotes various colon cancer stem cells (cCSCs) properties via an amplified paracrine mechanism regulated by higher Rab27A level.
Collapse
Affiliation(s)
- Feixue Feng
- The State Key Laboratory of Cancer Biology, Department of Pharmacogenomics, Fourth Military Medical University, Xi'an, China.,Department of Clinical Laboratory, the Affiliated Hospital of Shaanxi University of Chinese Medicine, Xianyang, China
| | - Yinghao Jiang
- The State Key Laboratory of Cancer Biology, Department of Pharmacogenomics, Fourth Military Medical University, Xi'an, China
| | - Huanyu Lu
- Department of Occupational and Environmental Health, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, China
| | - Xiaozhao Lu
- The State Key Laboratory of Cancer Biology, Department of Pharmacogenomics, Fourth Military Medical University, Xi'an, China
| | - Shan Wang
- The State Key Laboratory of Cancer Biology, Department of Pharmacogenomics, Fourth Military Medical University, Xi'an, China
| | - Lifeng Wang
- The State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, China
| | - Mengying Wei
- The State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, China
| | - Wei Lu
- The State Key Laboratory of Cancer Biology, Department of Pharmacogenomics, Fourth Military Medical University, Xi'an, China
| | - Zhichao Du
- The State Key Laboratory of Cancer Biology, Department of Pharmacogenomics, Fourth Military Medical University, Xi'an, China
| | - Zichen Ye
- The State Key Laboratory of Cancer Biology, Department of Pharmacogenomics, Fourth Military Medical University, Xi'an, China
| | - Guodong Yang
- The State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, China
| | - Fang Yuan
- Department of Clinical Laboratory, the Affiliated Hospital of Shaanxi University of Chinese Medicine, Xianyang, China
| | - Yanxia Ma
- Department of Clinical Laboratory, the Affiliated Hospital of Shaanxi University of Chinese Medicine, Xianyang, China
| | - Xiaoying Lei
- The State Key Laboratory of Cancer Biology, Department of Pharmacogenomics, Fourth Military Medical University, Xi'an, China
| | - Zifan Lu
- The State Key Laboratory of Cancer Biology, Department of Pharmacogenomics, Fourth Military Medical University, Xi'an, China
| |
Collapse
|
15
|
Bruinsma S, James DJ, Quintana Serrano M, Esquibel J, Woo SS, Kielar-Grevstad E, Crummy E, Qurashi R, Kowalchyk JA, Martin TFJ. Small molecules that inhibit the late stage of Munc13-4-dependent secretory granule exocytosis in mast cells. J Biol Chem 2018; 293:8217-8229. [PMID: 29615494 PMCID: PMC5971468 DOI: 10.1074/jbc.ra117.001547] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 03/30/2018] [Indexed: 01/05/2023] Open
Abstract
Ca2+-dependent secretory granule fusion with the plasma membrane is the final step for the exocytic release of inflammatory mediators, neuropeptides, and peptide hormones. Secretory cells use a similar protein machinery at late steps in the regulated secretory pathway, employing protein isoforms from the Rab, Sec1/Munc18, Munc13/CAPS, SNARE, and synaptotagmin protein families. However, no small-molecule inhibitors of secretory granule exocytosis that target these proteins are currently available but could have clinical utility. Here we utilized a high-throughput screen of a 25,000-compound library that identified 129 small-molecule inhibitors of Ca2+-triggered secretory granule exocytosis in RBL-2H3 mast cells. These inhibitors broadly fell into six different chemical classes, and follow-up permeable cell and liposome fusion assays identified the target for one class of these inhibitors. A family of 2-aminobenzothiazoles (termed benzothiazole exocytosis inhibitors or bexins) was found to inhibit mast cell secretory granule fusion by acting on a Ca2+-dependent, C2 domain–containing priming factor, Munc13-4. Our findings further indicated that bexins interfere with Munc13-4–membrane interactions and thereby inhibit Munc13-4–dependent membrane fusion. We conclude that bexins represent a class of specific secretory pathway inhibitors with potential as therapeutic agents.
Collapse
Affiliation(s)
- Stephen Bruinsma
- Department of Biochemistry, University of Wisconsin, Madison Wisconsin 53706
| | - Declan J James
- Department of Biochemistry, University of Wisconsin, Madison Wisconsin 53706
| | | | - Joseph Esquibel
- Department of Biochemistry, University of Wisconsin, Madison Wisconsin 53706
| | - Sang Su Woo
- Department of Biochemistry, University of Wisconsin, Madison Wisconsin 53706
| | | | - Ellen Crummy
- Department of Biochemistry, University of Wisconsin, Madison Wisconsin 53706
| | - Rehan Qurashi
- Department of Biochemistry, University of Wisconsin, Madison Wisconsin 53706
| | - Judy A Kowalchyk
- Department of Biochemistry, University of Wisconsin, Madison Wisconsin 53706
| | - Thomas F J Martin
- Department of Biochemistry, University of Wisconsin, Madison Wisconsin 53706.
| |
Collapse
|
16
|
Raza S, Alvisi G, Shahin F, Husain U, Rabbani M, Yaqub T, Anjum AA, Sheikh AA, Nawaz M, Ali MA. Role of Rab GTPases in HSV-1 infection: Molecular understanding of viral maturation and egress. Microb Pathog 2018; 118:146-153. [PMID: 29551438 DOI: 10.1016/j.micpath.2018.03.028] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 03/14/2018] [Accepted: 03/15/2018] [Indexed: 12/17/2022]
Abstract
Most enveloped viruses exploit complex cellular pathways for assembly and egress from the host cell, and the large DNA virus Herpes simplex virus 1 (HSV-1) makes no exception, hijacking several cellular transport pathways for its glycoprotein trafficking and maturation, as well as for viral morphogenesis and egress according to the envelopment, de-envelopment and re-envelopment model. Importantly Rab GTPases, widely distributed master regulators of intracellular membrane trafficking pathways, have recently being tightly implicated in such process. Indeed, siRNA-mediated genetic ablation of specific Rab proteins differently affected HSV-1 production, suggesting a complex role of different Rab proteins in HSV-1 life cycle. In this review, we discuss how different Rabs can regulate HSV-1 assembly/egress and the potential therapeutic applications of such findings for the management of HSV-1 infections.
Collapse
Affiliation(s)
- Sohail Raza
- Department of Microbiology, University of Veterinary and Animal Sciences Lahore 54000, Pakistan.
| | - Gualtiero Alvisi
- Department of Molecular Medicine, University of Padua, 35121, Italy
| | - Farzana Shahin
- The State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
| | - Urooj Husain
- Postgraduate Medical Institute Lahore 54000, Pakistan
| | - Masood Rabbani
- Department of Microbiology, University of Veterinary and Animal Sciences Lahore 54000, Pakistan
| | - Tahir Yaqub
- Department of Microbiology, University of Veterinary and Animal Sciences Lahore 54000, Pakistan
| | - Aftab Ahmad Anjum
- Department of Microbiology, University of Veterinary and Animal Sciences Lahore 54000, Pakistan
| | - Ali Ahmad Sheikh
- Department of Microbiology, University of Veterinary and Animal Sciences Lahore 54000, Pakistan
| | - Muhammad Nawaz
- Department of Microbiology, University of Veterinary and Animal Sciences Lahore 54000, Pakistan
| | - Muhammad Asad Ali
- Department of Microbiology, University of Veterinary and Animal Sciences Lahore 54000, Pakistan
| |
Collapse
|
17
|
Bustos MA, Lucchesi O, Ruete MC, Tomes CN. Membrane-permeable Rab27A is a regulator of the acrosome reaction: Role of geranylgeranylation and guanine nucleotides. Cell Signal 2018; 44:72-81. [PMID: 29337043 DOI: 10.1016/j.cellsig.2018.01.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 12/18/2017] [Accepted: 01/09/2018] [Indexed: 12/11/2022]
Abstract
The acrosome reaction is the regulated exocytosis of mammalian sperm's single secretory granule, essential for fertilization. It relies on small GTPases, the cAMP binding protein Epac, and the SNARE complex, among other components. Here, we describe a novel tool to investigate Rab27-related signaling pathways: a hybrid recombinant protein consisting of human Rab27A fused to TAT, a cell penetrating peptide. With this tool, we aimed to unravel the connection between Rab3, Rab27 and Rap1 in sperm exocytosis and to deepen our understanding about how isoprenylation and guanine nucleotides influence the behaviour of Rab27 in exocytosis. Our results show that TAT-Rab27A-GTP-γ-S permeated into live sperm and triggered acrosomal exocytosis per se when geraylgeranylated but inhibited it when not lipid-modified. Likewise, an impermeant version of Rab27A elicited exocytosis in streptolysin O-permeabilized - but not in non-permeabilized - cells when geranylgeranylated and active. When GDP-β-S substituted for GTP-γ-S, isoprenylated TAT-Rab27A inhibited the acrosome reaction triggered by progesterone and an Epac-selective cAMP analogue, whereas the non-isoprenylated protein did not. Geranylgeranylated TAT-Rab27A-GTP-γ-S promoted the exchange of GDP for GTP on Rab3 and Rap1 detected by far-immunofluorescence with Rab3-GTP and Rap1-GTP binding cassettes. In contrast, TAT-Rab27A lacking isoprenylation or loaded with GDP-β-S prevented the activation of Rab3 and Rap1 elicited by progesterone. Challenging streptolysin O-permeabilized human sperm with calcium increased the population of sperm with Rap1-GTP, Rab3-GTP and Rab27-GTP in the acrosomal region; pretreatment with anti-Rab27 antibodies prevented the activation of all three. The novel findings reported here include: the description of membrane permeant TAT-Rab27A as a trustworthy tool to unveil the regulation of the human sperm acrosome reaction by Rab27 under physiological conditions; that the activation of endogenous Rab27 is required for that of Rab3 and Rap1; and the connection between Epac and Rab27 and between Rab27 and the configuration of the SNARE complex. Moreover, we present direct evidence that Rab27A's lipid modification, and activation/inactivation status correlate with its stimulatory or inhibitory roles in exocytosis.
Collapse
Affiliation(s)
- Matías A Bustos
- Instituto de Histologia y Embriologia de Mendoza (IHEM) Dr. Mario H. Burgos-CONICET, Universidad Nacional de Cuyo, casilla de correo 56, 5500 Mendoza, Argentina
| | - Ornella Lucchesi
- Instituto de Histologia y Embriologia de Mendoza (IHEM) Dr. Mario H. Burgos-CONICET, Universidad Nacional de Cuyo, casilla de correo 56, 5500 Mendoza, Argentina
| | - María C Ruete
- Instituto de Histologia y Embriologia de Mendoza (IHEM) Dr. Mario H. Burgos-CONICET, Universidad Nacional de Cuyo, casilla de correo 56, 5500 Mendoza, Argentina
| | - Claudia N Tomes
- Instituto de Histologia y Embriologia de Mendoza (IHEM) Dr. Mario H. Burgos-CONICET, Universidad Nacional de Cuyo, casilla de correo 56, 5500 Mendoza, Argentina.
| |
Collapse
|
18
|
Effects of Rab27A and Rab27B on Invasion, Proliferation, Apoptosis, and Chemoresistance in Human Pancreatic Cancer Cells. Pancreas 2017; 46:1173-1179. [PMID: 28902788 DOI: 10.1097/mpa.0000000000000910] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
OBJECTIVES Rab family members are key regulatory factors that function as molecular switches in multiple phases of vesicular trafficking. Our previous study demonstrated that Rab27A and Rab27B overexpression may predict a poor outcome of pancreatic ductal adenocarcinoma. The purpose of this study was to investigate the role of Rab27A and Rab27B in the progression of pancreatic cancer. METHODS We down-regulated Rab27A and Rab27B expression in pancreatic cancer cell lines. The regulatory effects of knockdown Rab27A and Rab27B on pancreatic cancer cell were measured by cisplatin assay, invasion assay, proliferation assay, and Western blot assay. RESULTS Rab27A and Rab27B down-regulation enhances sensitivity to cisplatin and induces apoptosis in ASPC-1 and PANC-1 cells. In addition, down-regulation of Rab27A reduced the invasive and proliferative ability of ASPC-1 cells, and Rab27B knockdown significantly prevented cancer invasion and proliferation in PANC-1 cells. CONCLUSIONS Our findings provide evidence that Rab27A and Rab27B play significant roles in cell invasion, proliferation, and apoptosis, as well as in chemotherapy resistance.
Collapse
|
19
|
Woo SS, James DJ, Martin TFJ. Munc13-4 functions as a Ca 2+ sensor for homotypic secretory granule fusion to generate endosomal exocytic vacuoles. Mol Biol Cell 2017; 28:792-808. [PMID: 28100639 PMCID: PMC5349786 DOI: 10.1091/mbc.e16-08-0617] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 01/06/2017] [Accepted: 01/11/2017] [Indexed: 12/22/2022] Open
Abstract
Munc13-4 is a Ca2+-dependent SNARE (soluble N-ethylmaleimide-sensitive factor attachment protein receptor)- and phospholipid-binding protein that localizes to and primes secretory granules (SGs) for Ca2+-evoked secretion in various secretory cells. Studies in mast cell-like RBL-2H3 cells provide direct evidence that Munc13-4 with its two Ca2+-binding C2 domains functions as a Ca2+ sensor for SG exocytosis. Unexpectedly, Ca2+ stimulation also generated large (>2.4 μm in diameter) Munc13-4+/Rab7+/Rab11+ endosomal vacuoles. Vacuole generation involved the homotypic fusion of Munc13-4+/Rab7+ SGs, followed by a merge with Rab11+ endosomes, and depended on Ca2+ binding to Munc13-4. Munc13-4 promoted the Ca2+-stimulated fusion of VAMP8-containing liposomes with liposomes containing exocytic or endosomal Q-SNAREs and directly interacted with late endosomal SNARE complexes. Thus Munc13-4 is a tethering/priming factor and Ca2+ sensor for both heterotypic SG-plasma membrane and homotypic SG-SG fusion. Total internal reflection fluorescence microscopy imaging revealed that vacuoles were exocytic and mediated secretion of β-hexosaminidase and cytokines accompanied by Munc13-4 diffusion onto the plasma membrane. The results provide new molecular insights into the mechanism of multigranular compound exocytosis commonly observed in various secretory cells.
Collapse
Affiliation(s)
- Sang Su Woo
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706
| | - Declan J James
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706
| | - Thomas F J Martin
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706
| |
Collapse
|
20
|
Smith VL, Cheng Y, Bryant BR, Schorey JS. Exosomes function in antigen presentation during an in vivo Mycobacterium tuberculosis infection. Sci Rep 2017; 7:43578. [PMID: 28262829 PMCID: PMC5338015 DOI: 10.1038/srep43578] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Accepted: 01/25/2017] [Indexed: 01/03/2023] Open
Abstract
Mycobacterium tuberculosis-infected macrophages and dendritic cells are limited in their ability to present antigen to CD4+ T cells suggesting that other mechanism of antigen presentation are driving the robust T cell response observed during an M. tuberculosis infection. These mechanisms could include antigens present in apoptotic bodies, necrotic debris, exosomes or even release of non-vesicular antigen from infected cells. However, there is limited data to support any of these mechanisms as important in driving T cell activation in vivo. In the present study we use Rab27a-deficient mice which show diminished trafficking of mycobacterial components to exosomes as well as M. tuberculosis strains that express recombinant proteins which traffic or fail to traffic to exosomes. We observed that exosomes released during a mouse M. tuberculosis infection contribute significantly to its T cell response. These finding imply that exosomes function to promote T cell immunity during a bacterial infection and are an important source of extracellular antigen.
Collapse
Affiliation(s)
- Victoria L Smith
- Department of Biological Sciences, Eck Institute for Global Health, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - Yong Cheng
- Department of Biological Sciences, Eck Institute for Global Health, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - Barry R Bryant
- Department of Biological Sciences, Eck Institute for Global Health, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - Jeffrey S Schorey
- Department of Biological Sciences, Eck Institute for Global Health, University of Notre Dame, Notre Dame, Indiana 46556, USA
| |
Collapse
|
21
|
Worst TS, Meyer Y, Gottschalt M, Weis CA, von Hardenberg J, Frank C, Steidler A, Michel MS, Erben P. RAB27A, RAB27B and VPS36 are downregulated in advanced prostate cancer and show functional relevance in prostate cancer cells. Int J Oncol 2017; 50:920-932. [PMID: 28197629 DOI: 10.3892/ijo.2017.3872] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Accepted: 12/05/2016] [Indexed: 11/06/2022] Open
Abstract
Paracrine and long-range signaling via extracellular vesicles, such as exosomes and microvesicles, is deemed crucial for tumorigenesis, invasion and spread of solid tumors. The ESCRT machinery (endosomal sorting complexes required for transport) and Rab-proteins act as key players in vesicular trafficking and secretion. Yet, their role in prostate cancer (PCa) is unknown. Therefore, this study aimed to elucidate the relevance of these components in PCa. In silico reanalysis of genes with known involvement in vesicular trafficking and secretion in an existing microarray dataset revealed low expression of RAB27A, RAB27B and VPS36 to be predictive for reduced BCR-free survival in patients with localized PCa (p=0.033, 0.025 and 0.005). In the same microarray dataset underexpression of RAB27A, RAB27B and VPS36 was seen in distant metastases (p<0.001; p=0.003; p<0.001). This was consistent in two further microarray datasets. qRT-PCR-validation in two independent cohorts of PCa specimens (n=90) showed low expression of VPS36 in PCa tissue (p=0.023), especially in castration-resistant tumors (p=0.002). In all five datasets there were significant correlations between the expression of at least two of the candidates. Upon knockdown of VPS36 an increase of RAB27A and RAB27B expression, but not vice versa, was observed in both prostate and breast cancer cells (PC3, MDA-MB‑231). In PC3 cell knockdown of RAB27B and VPS36 dramatically reduced colony formation (-52.2%, p<0.001; -71.1%, p<0.001) and, controversial to reports in other tumor entities, increased the release of extracellular particles (+25.3%, p=0.014; +45.6%, p<0.001). Taken together RAB27A, RAB27B and VPS36 are frequently underexpressed in advanced PCa and are inversely correlated with PCa outcome. There seems to be a close relationship in the expression of RAB27A, RAB27B and VPS36, with RAB27A and RAB27B being dependent on VPS36. Changes in colony formation and particle release upon RNAi indicate an involvement in paracrine cell-cell communication.
Collapse
Affiliation(s)
- Thomas Stefan Worst
- Department of Urology, Mannheim Medical Center, University of Heidelberg, D-68167 Mannheim, Germany
| | - Yannic Meyer
- Department of Urology, Mannheim Medical Center, University of Heidelberg, D-68167 Mannheim, Germany
| | - Maria Gottschalt
- Institute of Pathology, Mannheim Medical Center, University of Heidelberg, D-68167 Mannheim, Germany
| | - Cleo-Aron Weis
- Institute of Pathology, Mannheim Medical Center, University of Heidelberg, D-68167 Mannheim, Germany
| | - Jost von Hardenberg
- Department of Urology, Mannheim Medical Center, University of Heidelberg, D-68167 Mannheim, Germany
| | - Christine Frank
- Department of Urology, Mannheim Medical Center, University of Heidelberg, D-68167 Mannheim, Germany
| | - Annette Steidler
- Department of Urology, Mannheim Medical Center, University of Heidelberg, D-68167 Mannheim, Germany
| | - Maurice Stephan Michel
- Department of Urology, Mannheim Medical Center, University of Heidelberg, D-68167 Mannheim, Germany
| | - Philipp Erben
- Department of Urology, Mannheim Medical Center, University of Heidelberg, D-68167 Mannheim, Germany
| |
Collapse
|
22
|
Kurz ARM, Pruenster M, Rohwedder I, Ramadass M, Schäfer K, Harrison U, Gouveia G, Nussbaum C, Immler R, Wiessner JR, Margraf A, Lim DS, Walzog B, Dietzel S, Moser M, Klein C, Vestweber D, Haas R, Catz SD, Sperandio M. MST1-dependent vesicle trafficking regulates neutrophil transmigration through the vascular basement membrane. J Clin Invest 2016; 126:4125-4139. [PMID: 27701149 DOI: 10.1172/jci87043] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 08/25/2016] [Indexed: 12/20/2022] Open
Abstract
Neutrophils need to penetrate the perivascular basement membrane for successful extravasation into inflamed tissue, but this process is incompletely understood. Recent findings have associated mammalian sterile 20-like kinase 1 (MST1) loss of function with a human primary immunodeficiency disorder, suggesting that MST1 may be involved in immune cell migration. Here, we have shown that MST1 is a critical regulator of neutrophil extravasation during inflammation. Mst1-deficient (Mst1-/-) neutrophils were unable to migrate into inflamed murine cremaster muscle venules, instead persisting between the endothelium and the basement membrane. Mst1-/- neutrophils also failed to extravasate from gastric submucosal vessels in a murine model of Helicobacter pylori infection. Mechanistically, we observed defective translocation of VLA-3, VLA-6, and neutrophil elastase from intracellular vesicles to the surface of Mst1-/- neutrophils, indicating that MST1 is required for this crucial step in neutrophil transmigration. Furthermore, we found that MST1 associates with the Rab27 effector protein synaptotagmin-like protein 1 (JFC1, encoded by Sytl1 in mice), but not Munc13-4, thereby regulating the trafficking of Rab27-positive vesicles to the cellular membrane. Together, these findings highlight a role for MST1 in vesicle trafficking and extravasation in neutrophils, providing an additional mechanistic explanation for the severe immune defect observed in patients with MST1 deficiency.
Collapse
|
23
|
Taylor PR, Roy S, Meszaros EC, Sun Y, Howell SJ, Malemud CJ, Pearlman E. JAK/STAT regulation of Aspergillus fumigatus corneal infections and IL-6/23-stimulated neutrophil, IL-17, elastase, and MMP9 activity. J Leukoc Biol 2016; 100:213-22. [PMID: 27034404 DOI: 10.1189/jlb.4a1015-483r] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Accepted: 03/07/2016] [Indexed: 12/15/2022] Open
Abstract
IL-6 and IL-23 (IL-6/23) induce IL-17A (IL-17) production by a subpopulation of murine and human neutrophils, resulting in autocrine IL-17 activation, enhanced production of reactive oxygen species, and increased fungal killing. As IL-6 and IL-23 receptors trigger JAK1, -3/STAT3 and JAK2/STAT3 phosphorylation, respectively, we examined the role of this pathway in a murine model of fungal keratitis and also examined neutrophil elastase and gelatinase (matrix metalloproteinase 9) activity by IL-6/23-stimulated human neutrophils in vitro. We found that STAT3 phosphorylation of neutrophils in Aspergillus fumigatus-infected corne as was inhibited by the JAK/STAT inhibitor Ruxolitinib, resulting in impaired fungal killing and decreased matrix metalloproteinase 9 activity. In vitro, we showed that fungal killing by IL-6/23-stimulated human peripheral blood neutrophils was impaired by JAK/STAT inhibitors Ruxolitinib and Stattic, and by the retinoic acid receptor-related orphan receptor γt inhibitor SR1001. This was also associated with decreased reactive oxygen species, IL-17A production, and retinoic acid receptor-related orphan receptor γt translocation to the nucleus. We also demonstrate that IL-6/23-activated neutrophils exhibit increased elastase and gelatinase (matrix metalloproteinase 9) activity, which is inhibited by Ruxolitinib and Stattic but not by SR1001. Taken together, these observations indicate that the regulation of activity of IL-17-producing neutrophils by JAK/STAT inhibitors impairs reactive oxygen species production and fungal killing activity but also blocks elastase and gelatinase activity that can cause tissue damage.
Collapse
Affiliation(s)
- Patricia R Taylor
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, Cleveland, Ohio, USA; and
| | - Sanhita Roy
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, Cleveland, Ohio, USA; and
| | - Evan C Meszaros
- School of Medicine, Division of Rheumatology, Case Western Reserve University, Cleveland, Ohio, USA
| | - Yan Sun
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, Cleveland, Ohio, USA; and
| | - Scott J Howell
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, Cleveland, Ohio, USA; and
| | - Charles J Malemud
- School of Medicine, Division of Rheumatology, Case Western Reserve University, Cleveland, Ohio, USA
| | - Eric Pearlman
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, Cleveland, Ohio, USA; and
| |
Collapse
|
24
|
He J, Johnson JL, Monfregola J, Ramadass M, Pestonjamasp K, Napolitano G, Zhang J, Catz SD. Munc13-4 interacts with syntaxin 7 and regulates late endosomal maturation, endosomal signaling, and TLR9-initiated cellular responses. Mol Biol Cell 2015; 27:572-87. [PMID: 26680738 PMCID: PMC4751605 DOI: 10.1091/mbc.e15-05-0283] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Accepted: 12/08/2015] [Indexed: 12/23/2022] Open
Abstract
The molecular mechanisms that regulate late endosomal maturation and function are not completely elucidated, and direct evidence of a calcium sensor is lacking. Here we identify a novel mechanism of late endosomal maturation that involves a new molecular interaction between the tethering factor Munc13-4, syntaxin 7, and VAMP8. Munc13-4 binding to syntaxin 7 was significantly increased by calcium. Colocalization of Munc13-4 and syntaxin 7 at late endosomes was demonstrated by high-resolution and live-cell microscopy. Munc13-4-deficient cells show increased numbers of significantly enlarged late endosomes, a phenotype that was mimicked by the fusion inhibitor chloroquine in wild-type cells and rescued by expression of Munc13-4 but not by a syntaxin 7-binding-deficient mutant. Late endosomes from Munc13-4-KO neutrophils show decreased degradative capacity. Munc13-4-knockout neutrophils show impaired endosomal-initiated, TLR9-dependent signaling and deficient TLR9-specific CD11b up-regulation. Thus we present a novel mechanism of late endosomal maturation and propose that Munc13-4 regulates the late endocytic machinery and late endosomal-associated innate immune cellular functions.
Collapse
Affiliation(s)
- Jing He
- Department of Molecular and Experimental Medicine, Scripps Research Institute, La Jolla, CA 92037
| | - Jennifer L Johnson
- Department of Molecular and Experimental Medicine, Scripps Research Institute, La Jolla, CA 92037
| | - Jlenia Monfregola
- Department of Molecular and Experimental Medicine, Scripps Research Institute, La Jolla, CA 92037
| | - Mahalakshmi Ramadass
- Department of Molecular and Experimental Medicine, Scripps Research Institute, La Jolla, CA 92037
| | - Kersi Pestonjamasp
- Cancer Center Microscopy Shared Resource, University of California, San Diego, La Jolla, CA 92093
| | - Gennaro Napolitano
- Department of Molecular and Experimental Medicine, Scripps Research Institute, La Jolla, CA 92037
| | - Jinzhong Zhang
- Department of Molecular and Experimental Medicine, Scripps Research Institute, La Jolla, CA 92037
| | - Sergio D Catz
- Department of Molecular and Experimental Medicine, Scripps Research Institute, La Jolla, CA 92037
| |
Collapse
|
25
|
Johnson JL, He J, Ramadass M, Pestonjamasp K, Kiosses WB, Zhang J, Catz SD. Munc13-4 Is a Rab11-binding Protein That Regulates Rab11-positive Vesicle Trafficking and Docking at the Plasma Membrane. J Biol Chem 2015; 291:3423-38. [PMID: 26637356 DOI: 10.1074/jbc.m115.705871] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Indexed: 11/06/2022] Open
Abstract
The small GTPase Rab11 and its effectors control trafficking of recycling endosomes, receptor replenishment and the up-regulation of adhesion and adaptor molecules at the plasma membrane. Despite recent advances in the understanding of Rab11-regulated mechanisms, the final steps mediating docking and fusion of Rab11-positive vesicles at the plasma membrane are not fully understood. Munc13-4 is a docking factor proposed to regulate fusion through interactions with SNAREs. In hematopoietic cells, including neutrophils, Munc13-4 regulates exocytosis in a Rab27a-dependent manner, but its possible regulation of other GTPases has not been explored in detail. Here, we show that Munc13-4 binds to Rab11 and regulates the trafficking of Rab11-containing vesicles. Using a novel Time-resolved Fluorescence Resonance Energy Transfer (TR-FRET) assay, we demonstrate that Munc13-4 binds to Rab11a but not to dominant negative Rab11a. Immunoprecipitation analysis confirmed the specificity of the interaction between Munc13-4 and Rab11, and super-resolution microscopy studies support the interaction of endogenous Munc13-4 with Rab11 at the single molecule level in neutrophils. Vesicular dynamic analysis shows the common spatio-temporal distribution of Munc13-4 and Rab11, while expression of a calcium binding-deficient mutant of Munc13-4 significantly affected Rab11 trafficking. Munc13-4-deficient neutrophils showed normal endocytosis, but the trafficking, up-regulation, and retention of Rab11-positive vesicles at the plasma membrane was significantly impaired. This correlated with deficient NADPH oxidase activation at the plasma membrane in response to Rab11 interference. Our data demonstrate that Munc13-4 is a Rab11-binding partner that regulates the final steps of Rab11-positive vesicle docking at the plasma membrane.
Collapse
Affiliation(s)
| | - Jing He
- From the Department of Molecular and Experimental Medicine and
| | | | - Kersi Pestonjamasp
- Cancer Center Microscopy Shared Resource, University of California San Diego, La Jolla, California 92093
| | - William B Kiosses
- Light Microscopy Core Facility, The Scripps Research Institute, La Jolla, California 92037 and
| | - Jinzhong Zhang
- From the Department of Molecular and Experimental Medicine and
| | - Sergio D Catz
- From the Department of Molecular and Experimental Medicine and
| |
Collapse
|
26
|
Catz SD. The role of Rab27a in the regulation of neutrophil function. Cell Microbiol 2014; 16:1301-10. [PMID: 24964030 DOI: 10.1111/cmi.12328] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Revised: 06/19/2014] [Accepted: 06/20/2014] [Indexed: 12/17/2022]
Abstract
Neutrophils are central regulators of the innate immune response and help shape the adaptive immune response. Malfunction and unregulated neutrophil activation leads to disease and inflammation. During the host response to infection, neutrophils display several mechanisms of defense mediated by their arsenal of granular proteins. Regulation of granular trafficking, docking and fusion is at the core of the neutrophil defense response to pathogens. The small GTPase Rab27a has emerged as a central regulator of the neutrophil response through its tight control of vesicular trafficking and degranulation. This review focuses on the latest research that has led to the characterization of Rab27a as an essential regulator of neutrophil function.
Collapse
Affiliation(s)
- Sergio D Catz
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| |
Collapse
|
27
|
A neutrophil intrinsic impairment affecting Rab27a and degranulation in cystic fibrosis is corrected by CFTR potentiator therapy. Blood 2014; 124:999-1009. [PMID: 24934256 DOI: 10.1182/blood-2014-02-555268] [Citation(s) in RCA: 126] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Studies have endeavored to reconcile whether dysfunction of neutrophils in people with cystic fibrosis (CF) is a result of the genetic defect or is secondary due to infection and inflammation. In this study, we illustrate that disrupted function of the CF transmembrane conductance regulator (CFTR), such as that which occurs in patients with ∆F508 and/or G551D mutations, correlates with impaired degranulation of antimicrobial proteins. We demonstrate that CF blood neutrophils release less secondary and tertiary granule components compared with control cells and that activation of the low-molecular-mass GTP-binding protein Rab27a, involved in the regulation of granule trafficking, is defective. The mechanism leading to impaired degranulation involves altered ion homeostasis caused by defective CFTR function with increased cytosolic levels of chloride and sodium, yet decreased magnesium measured in CF neutrophils. Decreased magnesium concentration in vivo and in vitro resulted in significantly decreased levels of GTP-bound Rab27a. Treatment of G551D patients with the ion channel potentiator ivacaftor resulted in normalized neutrophil cytosolic ion levels and activation of Rab27a, thereby leading to increased degranulation and bacterial killing. Our results confirm that intrinsic alterations of circulating neutrophils from patients with CF are corrected by ivacaftor, thus illustrating additional clinical benefits for CFTR modulator therapy.
Collapse
|
28
|
Villarroya-Beltri C, Baixauli F, Gutiérrez-Vázquez C, Sánchez-Madrid F, Mittelbrunn M. Sorting it out: regulation of exosome loading. Semin Cancer Biol 2014; 28:3-13. [PMID: 24769058 DOI: 10.1016/j.semcancer.2014.04.009] [Citation(s) in RCA: 545] [Impact Index Per Article: 54.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Accepted: 04/16/2014] [Indexed: 12/21/2022]
Abstract
Extracellular vesicles (EVs), a term that includes both exosomes of endocytic origin and vesicles derived from plasma membranes, are continuously secreted by cells to the extracellular environment, and represent a novel vehicle for cell-cell communication. Exosomes contain specific repertoires of proteins and RNAs, indicating the existence of mechanisms that control the sorting of molecules into them. Although the molecular mechanisms that regulate the loading of proteins into exosomes have been studied for years, the sorting of RNA has been elusive until recently. Here we review the molecular mechanisms that control the sorting of molecules into exosomes, with special attention to the sorting of RNA. We also discuss how the cellular context affects the composition of exosomes, and thus the outcome of the communication between the exosome-producer and recipient cells, with particular focus on the communication between tumor cells and with cells of the tumor microenvironment.
Collapse
Affiliation(s)
- Carolina Villarroya-Beltri
- Vascular Biology and Inflammation, Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain; Servicio de Inmunología, Hospital de la Princesa, Madrid, Spain
| | - Francesc Baixauli
- Vascular Biology and Inflammation, Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain; Servicio de Inmunología, Hospital de la Princesa, Madrid, Spain
| | - Cristina Gutiérrez-Vázquez
- Vascular Biology and Inflammation, Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain; Servicio de Inmunología, Hospital de la Princesa, Madrid, Spain
| | - Francisco Sánchez-Madrid
- Vascular Biology and Inflammation, Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain; Servicio de Inmunología, Hospital de la Princesa, Madrid, Spain.
| | - María Mittelbrunn
- Vascular Biology and Inflammation, Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain
| |
Collapse
|
29
|
Kawakami T, He J, Morita H, Yokoyama K, Kaji H, Tanaka C, Suemori SI, Tohyama K, Tohyama Y. Rab27a is essential for the formation of neutrophil extracellular traps (NETs) in neutrophil-like differentiated HL60 cells. PLoS One 2014; 9:e84704. [PMID: 24404184 PMCID: PMC3880328 DOI: 10.1371/journal.pone.0084704] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Accepted: 11/18/2013] [Indexed: 01/26/2023] Open
Abstract
Neutrophils play a crucial role in host defence. In response to a variety of inflammatory stimulation, they form neutrophil extracellular traps (NETs). NETs are extracellular structures composed of chromatin fibers decorated with antimicrobial proteins and developing studies indicate that NETs contribute to extracellular microbial killing. While the intracellular signaling pathways that regulate NET formation remain largely unknown, there is growing evidence that generation of reactive oxygen species (ROS) is a key event for NET formation. The Rab family small GTPase Rab27a is an important component of the secretory machinery of azurophilic granules in neutrophils. However, the precise mechanism of NET formation and whether or not Rab27a contributes to this process are unknown. Using neutrophil-like differentiated HL60 cells, we show here that Rab27a plays an essential role in both phorbol myristate acetate (PMA)- and Candida albicans-induced NET formation by regulating ROS production. Rab27a-knockdown inhibited ROS-positive phagosome formation during complement-mediated phagocytosis. To investigate the role of Rab27a in neutrophil function in detail, both primary human neutrophils and neutrophil-like differentiated HL60 cells were treated with PMA, and NET formation process was assessed by measurement of release of histone H3 into the medium, citrullination of the arginine in position 3 of histone H4 and chase of the nuclear change of the living cells in the co-existence of both cell-permeable and -impermeable nuclear indicators. PMA-induced NET formation occured sequentially in both neutrophil-like differentiated HL60 cells and primary neutrophils, and Rab27a-knockdown clearly inhibited NET formation in association with reduced ROS production. We also found that serum-treated Candida albicans triggers NET formation in a ROS-dependent manner, and that Rab27a-knockdown inhibits this process as well. Our findings demonstrate that Rab27a plays an important role in NET formation induced by both Candida albicans infection and PMA treatment by regulating ROS production.
Collapse
Affiliation(s)
- Tatsumi Kawakami
- Division of Biochemistry, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, Himeji, Japan
| | - Jinsong He
- Division of Biochemistry, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, Himeji, Japan
| | - Hiroyuki Morita
- Division of Biochemistry, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, Himeji, Japan
| | - Kunio Yokoyama
- Division of Biochemistry, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, Himeji, Japan
- Division of Gastroenterological Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Hiroaki Kaji
- Division of Biochemistry, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, Himeji, Japan
| | - Chisato Tanaka
- Division of Biochemistry, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, Himeji, Japan
| | - Shin-ichiro Suemori
- Department of Laboratory Medicine, Kawasaki Medical School, Kurashiki, Japan
| | - Kaoru Tohyama
- Department of Laboratory Medicine, Kawasaki Medical School, Kurashiki, Japan
| | - Yumi Tohyama
- Division of Biochemistry, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, Himeji, Japan
- * E-mail:
| |
Collapse
|
30
|
Hendrix A, De Wever O. Rab27 GTPases distribute extracellular nanomaps for invasive growth and metastasis: implications for prognosis and treatment. Int J Mol Sci 2013; 14:9883-92. [PMID: 23665896 PMCID: PMC3676819 DOI: 10.3390/ijms14059883] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2013] [Revised: 04/19/2013] [Accepted: 05/03/2013] [Indexed: 12/27/2022] Open
Abstract
The Rab27 family of small GTPases regulates exocytosis of distinct vesicle types including multivesicular endosomes, which results in the release of exosomes. Exosomes are nanometer-sized membrane vesicles that enclose soluble factors such as proteins and nucleic acids within a lipid bilayer and can travel toward distant tissues to influence multiple aspects of cell behavior. In our view that tumors are endocrine organs producing exosomes, Rab27 GTPases and their effector proteins are critical determinants for invasive growth and metastasis. Rab27 proteins and their effectors may serve as prognostic biomarkers or as targets for patient-tailored therapy.
Collapse
Affiliation(s)
- An Hendrix
- Laboratory of Experimental Cancer Research, Department of Radiation Oncology and Experimental Cancer Research, Ghent University Hospital, De Pintelaan 185, 9000 Ghent, Belgium.
| | | |
Collapse
|