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Hu Y, Jiang L, Wang G, Song Y, Shan Z, Wang X, Deng G, Shi J, Tian G, Zeng X, Liu L, Chen H, Li C. M6PR interacts with the HA2 subunit of influenza A virus to facilitate the fusion of viral and endosomal membranes. Sci China Life Sci 2024; 67:579-595. [PMID: 38038885 DOI: 10.1007/s11427-023-2471-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 10/18/2023] [Indexed: 12/02/2023]
Abstract
Influenza A virus (IAV) commandeers numerous host cellular factors for successful replication. However, very few host factors have been revealed to be involved in the fusion of viral envelope and late endosomal membranes. In this study, we identified cation-dependent mannose-6-phosphate receptor (M6PR) as a crucial host factor for the replication of IAV. We found that siRNA knockdown of M6PR expression significantly reduced the growth titers of different subtypes of IAV, and that the inhibitory effect of M6PR siRNA treatment on IAV growth was overcome by the complement of exogenously expressed M6PR. When A549 cells were treated with siRNA targeting M6PR, the nuclear accumulation of viral nucleoprotein (NP) was dramatically inhibited at early timepoints post-infection, indicating that M6PR engages in the early stage of the IAV replication cycle. By investigating the role of M6PR in the individual entry and post-entry steps of IAV replication, we found that the downregulation of M6PR expression had no effect on attachment, internalization, early endosome trafficking, or late endosome acidification. However, we found that M6PR expression was critical for the fusion of viral envelope and late endosomal membranes. Of note, M6PR interacted with the hemagglutinin (HA) protein of IAV, and further studies showed that the lumenal domain of M6PR and the ectodomain of HA2 mediated the interaction and directly promoted the fusion of the viral and late endosomal membranes, thereby facilitating IAV replication. Together, our findings highlight the importance of the M6PR-HA interaction in the fusion of viral and late endosomal membranes during IAV replication.
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Affiliation(s)
- Yuzhen Hu
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Li Jiang
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Guangwen Wang
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Yangming Song
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Zhibo Shan
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Xuyuan Wang
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Guohua Deng
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Jianzhong Shi
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Guobin Tian
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Xianying Zeng
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Liling Liu
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Hualan Chen
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China.
| | - Chengjun Li
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China.
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Liu Q, Wang W, Xu L, Zhang Q, Wang H. The host mannose-6-phosphate pathway and viral infection. Front Cell Infect Microbiol 2024; 14:1349221. [PMID: 38357444 PMCID: PMC10865371 DOI: 10.3389/fcimb.2024.1349221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 01/11/2024] [Indexed: 02/16/2024] Open
Abstract
Viruses, despite their simple structural composition, engage in intricate and complex interactions with their hosts due to their parasitic nature. A notable demonstration of viral behavior lies in their exploitation of lysosomes, specialized organelles responsible for the breakdown of biomolecules and clearance of foreign substances, to bolster their own replication. The man-nose-6-phosphate (M6P) pathway, crucial for facilitating the proper transport of hydrolases into lysosomes and promoting lysosome maturation, is frequently exploited for viral manipulation in support of replication. Recently, the discovery of lysosomal enzyme trafficking factor (LYSET) as a pivotal regulator within the lysosomal M6P pathway has introduced a fresh perspective on the intricate interplay between viral entry and host factors. This groundbreaking revelation illuminates unexplored dimensions of these interactions. In this review, we endeavor to provide a thorough overview of the M6P pathway and its intricate interplay with viral factors during infection. By consolidating the current understanding in this field, our objective is to establish a valuable reference for the development of antiviral drugs that selectively target the M6P pathway.
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Affiliation(s)
- Qincheng Liu
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, China
- Key Laboratory for Cell Homeostasis and Cancer Research of Guangdong Higher Education Institutes, Guangzhou, China
| | - Weiqi Wang
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, China
- Key Laboratory for Cell Homeostasis and Cancer Research of Guangdong Higher Education Institutes, Guangzhou, China
| | - Liwei Xu
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, China
- Key Laboratory for Cell Homeostasis and Cancer Research of Guangdong Higher Education Institutes, Guangzhou, China
| | - Qisheng Zhang
- Shanghai Sino Organoid Lifesciences Co., Ltd., Shanghai, China
| | - Hongna Wang
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, China
- Key Laboratory for Cell Homeostasis and Cancer Research of Guangdong Higher Education Institutes, Guangzhou, China
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Yan D, Cui D, Zhu Y, Chan CKW, Choi CHJ, Liu T, Lee NP, Law S, Tsao SW, Ma S, Cheung ALM. M6PR- and EphB4-Rich Exosomes Secreted by Serglycin-Overexpressing Esophageal Cancer Cells Promote Cancer Progression. Int J Biol Sci 2023; 19:625-640. [PMID: 36632458 PMCID: PMC9830512 DOI: 10.7150/ijbs.79875] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 12/13/2022] [Indexed: 01/04/2023] Open
Abstract
Accumulating evidence shows that exosomes participate in cancer progression. However, the functions of cancer cell exosome-transmitted proteins are rarely studied. Previously, we reported that serglycin (SRGN) overexpression promotes invasion and metastasis of esophageal squamous cell carcinoma (ESCC) cells. Here, we investigated the paracrine effects of exosomes from SRGN-overexpressing ESCC cells (SRGN Exo) on ESCC cell invasion and tumor angiogenesis, and used mass spectrometry to identify exosomal proteins involved. Cation-dependent mannose-6-phosphate receptor (M6PR) and ephrin type-B receptor 4 (EphB4) were pronouncedly upregulated in SRGN Exo. Upregulated exosomal M6PR mediated the pro-angiogenic effects of SRGN Exo both in vitro and in vivo, while augmented exosomal EphB4 mediated the pro-invasive effect of SRGN Exo on ESCC cells in vitro. In addition, in vitro studies showed that manipulation of M6PR expression affected the viability and migration of ESCC cells. Both M6PR and EphB4 expression levels were positively correlated with that of SRGN in the serum of patients with ESCC. High level of serum M6PR was associated with poor overall survival rates. Taken together, this study presents the first proof that exosomal M6PR and EphB4 play essential roles in tumor angiogenesis and malignancy, and that serum M6PR is a novel prognostic marker for ESCC patients.
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Affiliation(s)
- Dongdong Yan
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong SAR, China
| | - Di Cui
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong SAR, China
| | - Yun Zhu
- Center for Clinical Big Data and Analytics, the Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Cecilia Ka Wing Chan
- Department of Biomedical Engineering, The Chinese University of Hong Kong, Hong Kong SAR, China
| | | | - Tengfei Liu
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong SAR, China
| | - Nikki P.Y. Lee
- Department of Surgery, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong SAR, China
| | - Simon Law
- Department of Surgery, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong SAR, China
| | - Sai Wah Tsao
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong SAR, China
| | - Stephanie Ma
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong SAR, China.,The University of Hong Kong - Shenzhen Hospital, Shenzhen, China
| | - Annie Lai Man Cheung
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong SAR, China.,✉ Corresponding author: Annie L.M. Cheung, School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, University of Hong Kong, 21 Sassoon Road, Hong Kong SAR, China. Phone: 852-3917-9293; Fax: 852-2817-0857; E-mail:
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Dai P, Ruan P, Mao Y, Tang Z, Qiu X, Bajinka O, Tan Y. Gimap5 promoted RSV degradation through interaction with M6PR. J Med Virol 2023; 95:e28390. [PMID: 36484389 DOI: 10.1002/jmv.28390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 11/11/2022] [Accepted: 12/05/2022] [Indexed: 12/13/2022]
Abstract
Respiratory syncytial virus (RSV) is one of the main pathogens of viral pneumonia and bronchiolitis in infants and young children and life-threatening diseases among infants and young children. GTPases of the immune-associated protein family (GIMAP) are new family members of immune-associated GTPases. In recent years, much attention has been paid to the function of the GIMAP family in coping with infection and stress. Gimap5 is a member of the GIMAP family, which may be correlated with anti-infectious immunity. RT-qPCR, Western blot, and indirect immunofluorescence (IFA) were used to detect the expression of Gimap5, M6PR and IGF1R(the major RSV receptor). Transmission electron microscopy (TEM) was used to detect the degradation of RSV in Gimap5-overexpressed or -silent cell lines. Computer virtual screening was used to screen small molecule compounds targeting Gimap5 and the anti-RSV effects were explored through in vivo and in vitro experiments. GIMAP5 and M6PR were significantly downregulated after RSV infection. Gimap5 accelerated RSV degradation in lysosomes by interacting with M6PR, and further prevented RSV invasion by downregulating the expression of RSV surface receptor IGF1R. Three small molecule compounds targeting Gimap5 were confirmed to be the agonists of Gimap5. The three compounds effectively inhibited RSV infection and RSV-induced complications. Gimap5 promotes the degradation of RSV and its receptor through interacting with M6PR. Gimap5 agonists can effectively reduce RSV infection and RSV-induced complication in vivo and in vitro, which provides a new choice for the treatment of RSV.
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Affiliation(s)
- Pei Dai
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha, China.,Second Department of laboratory, Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University), Changsha, China
| | - Pinglang Ruan
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Yu Mao
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Zhongxiang Tang
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Xiangjie Qiu
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Ousman Bajinka
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha, China.,China-Africa Research Centre of Infectious Diseases, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Yurong Tan
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha, China.,China-Africa Research Centre of Infectious Diseases, School of Basic Medical Sciences, Central South University, Changsha, China
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5
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Dai P, Tang Z, Ruan P, Bajinka O, Liu D, Tan Y. Gimap5 Inhibits Lung Cancer Growth by Interacting With M6PR. Front Oncol 2021; 11:699847. [PMID: 34604035 PMCID: PMC8479171 DOI: 10.3389/fonc.2021.699847] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Accepted: 08/26/2021] [Indexed: 12/14/2022] Open
Abstract
Objective Several studies have demonstrated the impacts of GTPases of immunity-associated proteins (GIMAPs) on malignant cells. However, the mechanisms through which Gimap5 regulates lung cancer cells are yet to be thoroughly investigated in the literature. Our study aimed to investigate the function of Gimap5 in the development of lung cancer. Methods The expression levels of the GIMAP family were analyzed in lung cancer patients of various cancer databases and lung cancer cell lines. After the survival rates of the cells were analyzed, we constructed Gimap5 over-expressed lung cancer cell lines and assessed the effects of Gimap5 on cell migration, cell invasion, cell proliferation and the epithelial-mesenchymal transition (EMT). We later screened the interacting proteins of Gimap5 using Co-IP combined with mass spectrometry and then analyzed the expression and distribution of M6PR, including its impacts on protein-arginine deiminase type-4 (PADI4). Results Findings indicated that GIMAP family expression decreased significantly in lung cancer cell lines. We also noticed that the downregulation of the GIMAP family was related to the poor prognosis of lung cancer patients. Our experimental results showed that Gimap5 could inhibit the migration, invasion, proliferation and EMT of lung cancer cell lines. Moreover, we found that Gimap5 promoted the transport of M6PR from the cytoplasm to the cell membrane, thereby inhibiting the enhancement of EMT-related PADI4. Conclusion Our research suggested that Gimap5 could inhibit the growth of lung cancer by interacting with M6PR and that it could be a potential biomarker for the diagnosis and prognosis of lung cancer.
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Affiliation(s)
- Pei Dai
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Zhongxiang Tang
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Pinglang Ruan
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Ousman Bajinka
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha, China.,China-Africa Research Centre of Infectious Diseases, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Dan Liu
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Yurong Tan
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha, China.,China-Africa Research Centre of Infectious Diseases, School of Basic Medical Sciences, Central South University, Changsha, China
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Broqueza J, Prabaharan CB, Andrahennadi S, Allen KJH, Dickinson R, MacDonald-Dickinson V, Dadachova E, Uppalapati M. Novel Human Antibodies to Insulin Growth Factor 2 Receptor (IGF2R) for Radioimmunoimaging and Therapy of Canine and Human Osteosarcoma. Cancers (Basel) 2021; 13:2208. [PMID: 34064450 DOI: 10.3390/cancers13092208] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Revised: 04/28/2021] [Accepted: 04/29/2021] [Indexed: 11/16/2022] Open
Abstract
Simple Summary Osteosarcoma (OS) is the most common type of bone cancer and mainly affects children, teens and young adults. The overall survival rate is ~67%, but patients with distant metastases have poor prognosis. Insulin growth factor 2 receptor (IGF2R) is a protein that has been shown to be expressed widely in human patient-derived OS cells and is a suitable for target for monoclonal antibody-based therapies. Given the similarities between canine and human OS, IGF2R is also overexpressed in canine OS. Towards the goal of one-health approach, we generated human antibodies that bind with similar affinities to IGF2R expressed in human, murine and canine tissues. We demonstrate tumor accumulation of radiolabeled antibodies in mice bearing human and canine patients derived tumors. Therefore, these antibodies show promise for development into the agents for radioimmunoimaging and radioimmunotherapy of OS in human and canine patients. Abstract Etiological and genetic drivers of osteosarcoma (OS) are not well studied and vary from one tumor to another; making it challenging to pursue conventional targeted therapy. Recent studies have shown that cation independent mannose-6-phosphate/insulin-like growth factor-2 receptor (IGF2R) is consistently overexpressed in almost all of standard and patient-derived OS cell lines, making it an ideal therapeutic target for development of antibody-based drugs. Monoclonal antibodies, targeting IGF2R, can be conjugated with alpha- or beta-emitter radionuclides to deliver cytocidal doses of radiation to target IGF2R expression in OS. This approach known as radioimmunotherapy (RIT) can therefore be developed as a novel treatment for OS. In addition, OS is one of the common cancers in companion dogs and very closely resembles human OS in clinical presentation and molecular aberrations. In this study, we have developed human antibodies that cross-react with similar affinities to IGF2R proteins of human, canine and murine origin. We used naïve and synthetic antibody Fab-format phage display libraries to develop antibodies to a conserved region on IGF2R. The generated antibodies were radiolabeled and characterized in vitro and in vivo using human and canine OS patient-derived tumors in SCID mouse models. We demonstrate specific binding to IGF2R and tumor uptake in these models, as well as binding to tumor tissue of canine OS patients, making these antibodies suitable for further development of RIT for OS
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Karpathiou G, Dridi M, Krebs-Drouot L, Vassal F, Jouanneau E, Jacquesson T, Barrey C, Prades JM, Dumollard JM, Meyronet D, Boutonnat J, Péoc’h M. Autophagic Markers in Chordomas: Immunohistochemical Analysis and Comparison with the Immune Microenvironment of Chordoma Tissues. Cancers (Basel) 2021; 13:cancers13092169. [PMID: 33946484 PMCID: PMC8124629 DOI: 10.3390/cancers13092169] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 04/24/2021] [Accepted: 04/26/2021] [Indexed: 12/12/2022] Open
Abstract
Simple Summary In contrast to normal notochords, autophagic factors are often present in chordomas. Furthermore, PD-L1+ immune cells also express LC3B, suggesting the need for further investigations between autophagy and the immune microenvironment. Abstract Chordomas are notably resistant to chemotherapy. One of the cytoprotective mechanisms implicated in chemoresistance is autophagy. There are indirect data that autophagy could be implicated in chordomas, but its presence has not been studied in chordoma tissues. Sixty-one (61) chordomas were immunohistochemically studied for autophagic markers and their expression was compared with the expression in notochords, clinicopathological data, as well as the tumor immune microenvironment. All chordomas strongly and diffusely expressed cytoplasmic p62 (sequestosome 1, SQSTM1/p62), whereas 16 (26.2%) tumors also showed nuclear p62 expression. LC3B (Microtubule-associated protein 1A/1B-light chain 3B) tumor cell expression was found in 44 (72.1%) tumors. Autophagy-related 16‑like 1 (ATG16L1) was also expressed by most tumors. All tumors expressed mannose-6-phosphate/insulin-like growth factor 2 receptor (M6PR/IGF2R). LC3B tumor cell expression was negatively associated with tumor size, while no other parameters, such as age, sex, localization, or survival, were associated with the immunohistochemical factors studied. LC3B immune cell expression showed a significant positive association with programmed death-ligand 1 (PD-L1)+ immune cells and with a higher vascular density. ATG16L1 expression was also positively associated with higher vascular density. Notochords (n = 5) showed different immunostaining with a very weak LC3B and M6PR expression, and no p62 expression. In contrast to normal notochords, autophagic factors such as LC3B and ATG16L1 are often present in chordomas, associated with a strong and diffuse expression of p62, suggesting a blocked autophagic flow. Furthermore, PD-L1+ immune cells also express LC3B, suggesting the need for further investigations between autophagy and the immune microenvironment.
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Affiliation(s)
- Georgia Karpathiou
- Pathology Department, University Hospital of Saint-Etienne, 42055 Saint-Etienne, France; (M.D.); (J.M.D.); (M.P.)
- Correspondence:
| | - Maroa Dridi
- Pathology Department, University Hospital of Saint-Etienne, 42055 Saint-Etienne, France; (M.D.); (J.M.D.); (M.P.)
| | - Lila Krebs-Drouot
- Pathology Department, University Hospital of Grenoble, 38700 Grenoble, France; (L.K.-D.); (J.B.)
| | - François Vassal
- Neurosurgery Department, University Hospital of Saint-Etienne, 42055 Saint-Etienne, France;
| | - Emmanuel Jouanneau
- Department of Neurosurgery B, Neurological Hospital Pierre Wertheimer, 69500 Lyon, France; (E.J.); (T.J.)
- Inserm U1052, CNRS UMR5286, «Signaling, Metabolism and Tumor Progression» The Cancer Research Center of Lyon, 69373 Lyon, France
- Claude Bernard University, Lyon 1, 69100 Lyon, France; (C.B.); (D.M.)
| | - Timothée Jacquesson
- Department of Neurosurgery B, Neurological Hospital Pierre Wertheimer, 69500 Lyon, France; (E.J.); (T.J.)
- Department of Anatomy, Faculté de Médecine Lyon-Est, Université de Lyon, Université Claude Bernard Lyon 1, 69100 Lyon, France
| | - Cédric Barrey
- Claude Bernard University, Lyon 1, 69100 Lyon, France; (C.B.); (D.M.)
- Department of Spine and Spinal Cord Surgery, Neurological Hospital Pierre Wertheimer, 69500 Lyon, France
| | - Jean Michel Prades
- Head and Neck Surgery Department, University Hospital of Saint-Etienne, 42055 Saint-Etienne, France;
| | - Jean Marc Dumollard
- Pathology Department, University Hospital of Saint-Etienne, 42055 Saint-Etienne, France; (M.D.); (J.M.D.); (M.P.)
| | - David Meyronet
- Claude Bernard University, Lyon 1, 69100 Lyon, France; (C.B.); (D.M.)
- East Pathology Institute, Hospices Civils de Lyon, 69677 Lyon, France
- Cancer Research Center of Lyon, Cancer Cell Plasticity Department, 69373 Lyon, France
| | - Jean Boutonnat
- Pathology Department, University Hospital of Grenoble, 38700 Grenoble, France; (L.K.-D.); (J.B.)
| | - Michel Péoc’h
- Pathology Department, University Hospital of Saint-Etienne, 42055 Saint-Etienne, France; (M.D.); (J.M.D.); (M.P.)
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Liang XH, Nichols JG, Hsu CW, Crooke ST. Hsc70 Facilitates Mannose-6-Phosphate Receptor-Mediated Intracellular Trafficking and Enhances Endosomal Release of Phosphorothioate-Modified Antisense Oligonucleotides. Nucleic Acid Ther 2021; 31:284-297. [PMID: 33567234 DOI: 10.1089/nat.2020.0920] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Phosphorothioate-modified antisense oligonucleotide (PS-ASO) drugs are commonly used to modulate gene expression through RNase H1-mediated cleavage of target RNAs. Upon internalization through endocytic pathways into cells, PS-ASOs must be released from membraned endosomal organelles to act on target RNAs, a limiting step of PS-ASO activity. Here we report that Hsc70 protein mediates productive release of PS-ASOs from endosomes. Hsc70 protein was enriched in endosome fractions shortly after PS-ASO incubation with cells. Reduction of Hsc70 significantly decreased the activities of PS-ASOs in reducing target RNAs. PS-ASO uptake and transport from early endosomes to late endosomes (LEs) were not affected upon Hsc70 reduction; however, endosomal release of PS-ASOs was impaired. Reduction of Hsc70 led to more scattered mannose-6-phosphate receptor (M6PR) localization at LEs in the cytoplasm, in contrast to the perinuclear localization at trans-Golgi network (TGN) in control cells, suggesting that retrograde transport of M6PR from LEs to TGN was affected. Consistently, reduction of Hsc70 increased colocalization of M6PR and PS-ASOs at LEs, and also delayed M6PR antibody transport from LE to TGN. Together, these results suggest that Hsc70 protein is involved in M6PR vesicle escape from LEs and may thus enhance PS-ASO release from LEs.
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Affiliation(s)
- Xue-Hai Liang
- Department of Core Antisense Research, Ionis Pharmaceuticals, Inc., Carlsbad, California, USA
| | - Joshua G Nichols
- Department of Core Antisense Research, Ionis Pharmaceuticals, Inc., Carlsbad, California, USA
| | - Chih-Wei Hsu
- Department of Core Antisense Research, Ionis Pharmaceuticals, Inc., Carlsbad, California, USA
| | - Stanley T Crooke
- Department of Core Antisense Research, Ionis Pharmaceuticals, Inc., Carlsbad, California, USA
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Faris R, Merling M, Andersen SE, Dooley CA, Hackstadt T, Weber MM. Chlamydia trachomatis CT229 Subverts Rab GTPase-Dependent CCV Trafficking Pathways to Promote Chlamydial Infection. Cell Rep 2020; 26:3380-3390.e5. [PMID: 30893609 DOI: 10.1016/j.celrep.2019.02.079] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 11/28/2018] [Accepted: 02/20/2019] [Indexed: 01/25/2023] Open
Abstract
Chlamydial infection requires the formation of a membrane-bound vacuole, termed the inclusion, that undergoes extensive interactions with select host organelles. The importance of the Inc protein CT229 in the formation and maintenance of the chlamydial inclusion was recently highlighted by studies demonstrating that its absence during infection results in reduced bacterial replication, premature inclusion lysis, and host cell death. Previous reports have indicated that CT229 binds Rab GTPases; however, the physiological implications of this interaction are unknown. Here, we show that CT229 regulates host multivesicular trafficking by recruiting multiple Rab GTPases and their cognate effectors to the inclusion. We demonstrate that CT229 specifically modulates clathrin-coated vesicle trafficking and regulates the trafficking of transferrin and the mannose-6-phosphate receptor, both of which are crucial for proper chlamydial development. This study highlights CT229 as a master regulator of multiple host vesicular trafficking pathways essential for chlamydial infection.
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Affiliation(s)
- Robert Faris
- Department of Microbiology and Immunology, University of Iowa Carver College of Medicine, Iowa City, IA 52242, USA
| | - Marlena Merling
- Department of Microbiology and Immunology, University of Iowa Carver College of Medicine, Iowa City, IA 52242, USA; Department of Biology, University of Dayton, Dayton, OH 45469, USA
| | - Shelby E Andersen
- Department of Microbiology and Immunology, University of Iowa Carver College of Medicine, Iowa City, IA 52242, USA
| | - Cheryl A Dooley
- Host Parasite Interactions Section, Laboratory of Bacteriology, Rocky Mountain Laboratories, National Institutes of Allergy and Infectious Disease, NIH, Hamilton, MT 59840, USA
| | - Ted Hackstadt
- Host Parasite Interactions Section, Laboratory of Bacteriology, Rocky Mountain Laboratories, National Institutes of Allergy and Infectious Disease, NIH, Hamilton, MT 59840, USA
| | - Mary M Weber
- Department of Microbiology and Immunology, University of Iowa Carver College of Medicine, Iowa City, IA 52242, USA.
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Scalia P, Giordano A, Williams SJ. The IGF-II-Insulin Receptor Isoform-A Autocrine Signal in Cancer: Actionable Perspectives. Cancers (Basel) 2020; 12:E366. [PMID: 32033443 DOI: 10.3390/cancers12020366] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 01/31/2020] [Accepted: 02/02/2020] [Indexed: 12/18/2022] Open
Abstract
Insulin receptor overexpression is a common event in human cancer. Its overexpression is associated with a relative increase in the expression of its isoform A (IRA), a shorter variant lacking 11 aa in the extracellular domain, conferring high affinity for the binding of IGF-II along with added intracellular signaling specificity for this ligand. Since IGF-II is secreted by the vast majority of malignant solid cancers, where it establishes autocrine stimuli, the co-expression of IGF-II and IRA in cancer provides specific advantages such as apoptosis escape, growth, and proliferation to those cancers bearing such a co-expression pattern. However, little is known about the exact role of this autocrine ligand–receptor system in sustaining cancer malignant features such as angiogenesis, invasion, and metastasis. The recent finding that the overexpression of angiogenic receptor kinase EphB4 along with VEGF-A is tightly dependent on the IGF-II/IRA autocrine system independently of IGFIR provided new perspectives for all malignant IGF2omas (those aggressive solid cancers secreting IGF-II). The present review provides an updated view of the IGF system in cancer, focusing on the biology of the autocrine IGF-II/IRA ligand–receptor axis and supporting its underscored role as a malignant-switch checkpoint target.
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Farrokhi Z, Alizadeh H, Alizadeh H. Developmental patterns of enzyme activity, gene expression, and sugar content in sucrose metabolism of two broomrape species. Plant Physiol Biochem 2019; 142:8-14. [PMID: 31247445 DOI: 10.1016/j.plaphy.2019.06.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 06/12/2019] [Accepted: 06/12/2019] [Indexed: 06/09/2023]
Abstract
A better understanding of broomrape physiological features opens up new perspectives for developing specific management strategies. For this purpose, activities of key enzymes involved in osmoregulation (SAI1, CWI, M6PR, and SUS1) were considered at developmental stages of two important broomrape species (Egyptian and branched broomrape) on tomato. While Egyptian broomrape tubercles had high activities of invertases, branched broomrape shoots revealed high activities of M6PR and SUS1 during both pre- and post-emergence stages except for M6PR at post-emergence stages of P. aegyptiaca. Interestingly, the main accumulation of total reducing sugars was detected in tubercle during pre- and in shoot during post-emergence. Unlike low levels of genes expression (except for CWI) before parasite emergence, significantly higher expression levels of SAI1, SUS1 and M6PR were detected after parasite emergence. Matching the expression levels of SAI1 and SUS1 genes with their corresponding enzymes activities makes them as the suitable candidates for gene silencing strategies.
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Affiliation(s)
- Zahra Farrokhi
- Department of Agronomy & Plant Breeding, College of Agriculture & Natural Resources, University of Tehran, Karaj, Iran
| | - Hassan Alizadeh
- Department of Agronomy & Plant Breeding, College of Agriculture & Natural Resources, University of Tehran, Karaj, Iran.
| | - Houshang Alizadeh
- Department of Agronomy & Plant Breeding, College of Agriculture & Natural Resources, University of Tehran, Karaj, Iran
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Ahmed KA, Xiang J. mTORC1 regulates mannose-6-phosphate receptor transport and T-cell vulnerability to regulatory T cells by controlling kinesin KIF13A. Cell Discov 2017; 3:17011. [PMID: 28496990 PMCID: PMC5404257 DOI: 10.1038/celldisc.2017.11] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 03/05/2017] [Indexed: 12/15/2022] Open
Abstract
Mannose-6-phosphate receptor (M6PR) that facilitates cellular uptake of M6P-bearing proteins, including serine-protease granzyme-B (Gzm-B) has an important role in T-cell activation, migration and contraction. However, molecular mechanisms controlling M6PR expression in T cells remain poorly understood. Here, we show that M6PR expression on T cells is distinctively controlled by two common γ-chain cytokines interleukin-2 (IL-2) and IL-7, and the differential M6PR expression is not caused by an altered synthesis of M6PR protein, but is a result of distinct regulation of kinesin-3 motor-protein KIF13A that transport M6PR onto cell surfaces. Using signaling pathway-specific inhibitors, we determine that IL-2 and IL-7 distinctly regulate KIF13A and β1-adaptin and cell-surface M6PR by controlling a kinase mammalian target of rapamycin complex-1 (mTORC1). Inflammatory cytokine IL-2 and prosurvival cytokine IL-7 induce strong and weak activation of mTORC1, leading to up- and downregulation of motor-protein KIF13A and KIF13A-motorized M6PR on T cells, and formation of IL-2 and IL-7 effectors with M6PRhigh and M6PRlow cell-surface expression, respectively. Inhibition of mTORC1 by rapamycin reduces T-cell expression of KIF13A and cell-surface M6PR, and increases T-cell survival in Listeria monocytogenes-infected mice. Using regulatory T (Treg)-cell-enriched mouse tumor model, we determine that M6PRhigh IL-2 effectors but not M6PRlow IL-7 effectors adoptively transferred into tumors are vulnerable to Treg Gzm-B-mediated cell apoptosis. Inhibition of mTORC1 or small interfering RNA-mediated knockdown of KIF13A or M6PR renders IL-2 effectors refractory to Treg Gzm-B lethal hit. Overall, our data offer novel mechanistic insights into T-cell M6PR regulation, and Treg-resistant/Treg-susceptible phenomenon. Furthermore, regulation of T-cell fate vis-à-vis Treg suppression via the mTORC1-KIF13A-M6PR axis provides a proof of concept for therapeutic strategies to target cancer, infectious and autoimmune diseases.
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Affiliation(s)
- Khawaja Ashfaque Ahmed
- Cancer Research, Saskatchewan Cancer Agency, Saskatoon, Saskatchewan, Canada.,Department of Oncology, College of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Jim Xiang
- Cancer Research, Saskatchewan Cancer Agency, Saskatoon, Saskatchewan, Canada.,Department of Oncology, College of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
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Hughes SM, Hope KM, Xu JB, Mitchell NL, Palmer DN. Inhibition of storage pathology in prenatal CLN5-deficient sheep neural cultures by lentiviral gene therapy. Neurobiol Dis 2014; 62:543-50. [PMID: 24269732 DOI: 10.1016/j.nbd.2013.11.011] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Revised: 11/01/2013] [Accepted: 11/12/2013] [Indexed: 12/12/2022] Open
Abstract
The neuronal ceroid lipofuscinoses (NCLs, Batten disease) are inherited neurodegenerative lysosomal storage diseases caused by mutations in several different genes. Mutations in CLN5 cause a variant late-infantile human disease and some cases of juvenile and adult clinical disease. NCLs also occur in animals, and a flock of New Zealand Borderdale sheep with a CLN5 splice-site mutation has been developed for model studies. Dissociated mixed neural cells from CLN5-deficient foetal sheep brains contained no obvious storage bodies at plating but these accumulated rapidly in culture, mainly in microglial cells and also in neurons and astrocytes. Accumulation was very obvious after a week, as monitored by fluorescent microscopy and immunostaining for subunit c of mitochondrial ATP synthase. Photography at intervals revealed the dynamic nature of the cultures and a flow of storage bodies between cells, specifically the phagocytosis of storage-body containing cells by microglia and incorporation of the storage bodies into the host cells. No storage was observed in cultured control cells. Transduction of cell cultures with a lentiviral vector expressing a C-terminal Myc tagged CLN5 resulted in secretion of post-translationally glycosylated and processed CLN5. Transduction of CLN5-deficient cultures with this construct rapidly reversed storage body accumulation, to less than half in only six days. These results show that storage body accumulation is reversible with enzyme correction and support the use of these cultures for testing of therapeutics prior to whole animal studies.
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Affiliation(s)
- Stephanie M Hughes
- Department of Biochemistry, Otago School of Medical Sciences, University of Otago, PO Box 54, Dunedin 9054, New Zealand; Brain Health Research Centre, University of Otago, PO Box 54, Dunedin 9054, New Zealand.
| | - Katie M Hope
- Department of Biochemistry, Otago School of Medical Sciences, University of Otago, PO Box 54, Dunedin 9054, New Zealand.
| | - Janet Boyu Xu
- Faculty of Agriculture and Life Sciences, PO Box 85084, Lincoln University, Lincoln 7647, New Zealand.
| | - Nadia L Mitchell
- Faculty of Agriculture and Life Sciences, PO Box 85084, Lincoln University, Lincoln 7647, New Zealand.
| | - David N Palmer
- Faculty of Agriculture and Life Sciences, PO Box 85084, Lincoln University, Lincoln 7647, New Zealand.
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