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Pradel B, Cantaloube G, Villares M, Deffieu MS, Robert-Hebmann V, Lucansky V, Faure M, Chazal N, Gaudin R, Espert L. LC3B conjugation machinery promotes autophagy-independent HIV-1 entry in CD4 + T lymphocytes. Autophagy 2024; 20:1825-1836. [PMID: 38566318 PMCID: PMC11262235 DOI: 10.1080/15548627.2024.2338573] [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: 08/21/2023] [Accepted: 03/29/2024] [Indexed: 04/04/2024] Open
Abstract
HIV-1 entry into CD4+ T lymphocytes relies on the viral and cellular membranes' fusion, leading to viral capsid delivery in the target cell cytoplasm. Atg8/LC3B conjugation to lipids, process named Atg8ylation mainly studied in the context of macroautophagy/autophagy, occurs transiently in the early stages of HIV-1 replication in CD4+ T lymphocytes. Despite numerous studies investigating the HIV-1-autophagy interplays, the Atg8ylation impact in these early stages of infection remains unknown. Here we found that HIV-1 exposure leads to the rapid LC3B enrichment toward the target cell plasma membrane, in close proximity with the incoming viral particles. Furthermore, we demonstrated that Atg8ylation is a key event facilitating HIV-1 entry in target CD4+ T cells. Interestingly, this effect is independent of canonical autophagy as ATG13 silencing does not prevent HIV-1 entry. Together, our results provide an unconventional role of LC3B conjugation subverted by HIV-1 to achieve a critical step of its replication cycle.Abbreviations: BafA1: bafilomycin A1; BlaM: beta-lactamase; CD4+ TL: CD4+ T lymphocytes; PtdIns3K-BECN1 complex: BECN1-containing class III phosphatidylinositol 3-kinase complex; Env: HIV-1 envelope glycoproteins; HIV-1: type 1 human immunodeficiency virus; PM: plasma membrane; PtdIns3P: phosphatidylinositol-3-phosphate; VLP: virus-like particle.
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Affiliation(s)
- Baptiste Pradel
- University of Montpellier, CNRS, Institut de Recherche en Infectiologie de Montpellier (IRIM), Montpellier, France
| | - Guilhem Cantaloube
- University of Montpellier, CNRS, Institut de Recherche en Infectiologie de Montpellier (IRIM), Montpellier, France
| | - Marie Villares
- University of Montpellier, CNRS, Institut de Recherche en Infectiologie de Montpellier (IRIM), Montpellier, France
| | - Maïka S. Deffieu
- University of Montpellier, CNRS, Institut de Recherche en Infectiologie de Montpellier (IRIM), Montpellier, France
| | - Véronique Robert-Hebmann
- University of Montpellier, CNRS, Institut de Recherche en Infectiologie de Montpellier (IRIM), Montpellier, France
| | - Vincent Lucansky
- University of Montpellier, CNRS, Institut de Recherche en Infectiologie de Montpellier (IRIM), Montpellier, France
- Jessenius Faculty of Medicine in Martin (JFMED CU), Department of Pathophysiology, Comenius University in Bratislava, Martin, Slovakia
| | - Mathias Faure
- CIRI, University of Lyon, Inserm U1111, Claude Bernard University Lyon 1, CNRS, UMR5308, ENS de Lyon, Lyon, France
| | - Nathalie Chazal
- University of Montpellier, CNRS, Institut de Recherche en Infectiologie de Montpellier (IRIM), Montpellier, France
| | - Raphaël Gaudin
- University of Montpellier, CNRS, Institut de Recherche en Infectiologie de Montpellier (IRIM), Montpellier, France
| | - Lucile Espert
- University of Montpellier, CNRS, Institut de Recherche en Infectiologie de Montpellier (IRIM), Montpellier, France
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2
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Amin A, Perera ND, Tomas D, Cuic B, Radwan M, Hatters DM, Turner BJ, Shabanpoor F. Systemic administration of a novel Beclin 1-derived peptide significantly upregulates autophagy in the spinal motor neurons of autophagy reporter mice. Int J Pharm 2024; 659:124198. [PMID: 38816263 DOI: 10.1016/j.ijpharm.2024.124198] [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: 02/27/2024] [Revised: 04/09/2024] [Accepted: 05/01/2024] [Indexed: 06/01/2024]
Abstract
Autophagy, an intracellular degradation system, plays a vital role in protecting cells by clearing damaged organelles, pathogens, and protein aggregates. Autophagy upregulation through pharmacological interventions has gained significant attention as a potential therapeutic avenue for proteinopathies. Here, we report the development of an autophagy-inducing peptide (BCN4) derived from the Beclin 1 protein, the master regulator of autophagy. To deliver the BCN4 into cells and the central nervous system (CNS), it was conjugated to our previously developed cell and blood-brain barrier-penetrating peptide (CPP). CPP-BCN4 significantly upregulated autophagy and reduced protein aggregates in motor neuron (MN)-like cells. Moreover, its systemic administration in a reporter mouse model of autophagy resulted in a significant increase in autophagy activity in the spinal MNs. Therefore, this novel autophagy-inducing peptide with a demonstrated ability to upregulate autophagy in the CNS has significant potential for the treatment of various neurodegenerative diseases with protein aggregates as a characteristic feature.
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Affiliation(s)
- Azin Amin
- The Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville 3010, VIC, Australia
| | - Nirma D Perera
- The Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville 3010, VIC, Australia
| | - Doris Tomas
- The Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville 3010, VIC, Australia
| | - Brittany Cuic
- The Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville 3010, VIC, Australia
| | - Mona Radwan
- Walter and Eliza Hall Institute of Medical Research, University of Melbourne, Parkville 3010, VIC, Australia
| | - Danny M Hatters
- Department of Biochemistry and Pharmacology and Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville 3010, VIC, Australia
| | - Bradley J Turner
- The Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville 3010, VIC, Australia
| | - Fazel Shabanpoor
- The Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville 3010, VIC, Australia; School of Chemistry, University of Melbourne, VIC 3010, Australia.
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3
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Ji X, Jin P, Yu P, Wang P. Autophagy ameliorates Pseudomonas aeruginosa-infected diabetic wounds by regulating the toll-like receptor 4/myeloid differentiation factor 88 pathway. Wound Repair Regen 2023; 31:305-320. [PMID: 36879445 DOI: 10.1111/wrr.13074] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 02/11/2023] [Accepted: 02/18/2023] [Indexed: 03/08/2023]
Abstract
Diabetic foot ulcers (DFUs) are among the most common complications in patients with diabetes and a leading cause of lower extremity amputation. DFUs are exacerbated by prolonged bacterial infection; therefore, there is an urgent need for effective treatments to alleviate the burden associated with this condition. Although autophagy plays a unique role in pathogen phagocytosis and inflammation, its role in diabetic foot infections (DFIs) remains unclear. Pseudomonas aeruginosa (PA) is the most frequently isolated gram-negative bacterium from DFUs. Here, we evaluated the role of autophagy in ameliorating PA infection in wounds in a diabetic rat model and a bone marrow-derived macrophage (BMDM) hyperglycemia model. Both models were pretreated with or without rapamycin (RAPA) and then infected with or without PA. Pretreatment of rats with RAPA significantly enhanced PA phagocytosis, suppressed wound inflammation, reduced the M1:M2 macrophage ratio, and improved wound healing. In vitro investigation of the underlying mechanisms revealed that enhanced autophagy resulted in decreased macrophage secretion of inflammatory factors such as TNF-α, IL-6, and IL-1β but increased that of IL-10 in response to PA infection. Additionally, RAPA treatment significantly enhanced autophagy in macrophages by increasing LC3 and beclin-1 levels, which led to altered macrophage function. Furthermore, RAPA blocked the PA-induced TLR4/MyD88 pathway to regulate macrophage polarisation and inflammatory cytokine production, which was validated by RNA interference and use of the autophagy inhibitor 3-methyladenine (3-MA). These findings suggest enhancing autophagy as a novel therapeutic strategy against PA infection to ultimately improve diabetic wound healing.
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Affiliation(s)
- Xiaoyan Ji
- NHC Key Laboratory of Hormones and Development, Tianjin Key Laboratory of Metabolic Diseases, Chu Hsien-I Memorial Hospital &Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, China.,Department of Emergency Ward, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China
| | - Peng Jin
- Department of Gastric Surgery, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin, China.,Key Laboratory of Cancer Prevention and Therapy, Tianjin, China.,Tianjin's Clinical Research Center for Cancer, Tianjin, China
| | - Pei Yu
- NHC Key Laboratory of Hormones and Development, Tianjin Key Laboratory of Metabolic Diseases, Chu Hsien-I Memorial Hospital &Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, China
| | - Penghua Wang
- NHC Key Laboratory of Hormones and Development, Tianjin Key Laboratory of Metabolic Diseases, Chu Hsien-I Memorial Hospital &Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, China
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4
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He Y, Lu H, Zhao Y. Development of an autophagy activator from Class III PI3K complexes, Tat-BECN1 peptide: Mechanisms and applications. Front Cell Dev Biol 2022; 10:851166. [PMID: 36172279 PMCID: PMC9511052 DOI: 10.3389/fcell.2022.851166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Accepted: 08/22/2022] [Indexed: 11/13/2022] Open
Abstract
Impairment or dysregulation of autophagy has been implicated in many human pathologies ranging from neurodegenerative diseases, infectious diseases, cardiovascular diseases, metabolic diseases, to malignancies. Efforts have been made to explore the therapeutic potential of pharmacological autophagy activators, as beneficial health effects from caloric restriction or physical exercise are linked to autophagy activation. However, the lack of specificity remains the major challenge to the development and clinical use of autophagy activators. One candidate of specific autophagy activators is Tat-BECN1 peptide, derived from Beclin 1 subunit of Class III PI3K complexes. Here, we summarize the molecular mechanisms by which Tat-BECN1 peptide activates autophagy, the strategies for optimization and development, and the applications of Tat-BECN1 peptide in cellular and organismal models of physiology and pathology.
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Kaur S, Changotra H. The beclin 1 interactome: Modification and roles in the pathology of autophagy-related disorders. Biochimie 2020; 175:34-49. [PMID: 32428566 DOI: 10.1016/j.biochi.2020.04.025] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 04/18/2020] [Accepted: 04/28/2020] [Indexed: 12/15/2022]
Abstract
Beclin 1 a yeast Atg6/VPS30 orthologue has a significant role in autophagy process (Macroautophagy) and protein sorting. The function of beclin 1 depends on the interaction with several autophagy-related genes (Atgs) and other proteins during the autophagy process. The role mediated by beclin 1 is controlled by various conditions and factors. Beclin 1 is regulated at the gene and protein levels by different factors. These regulations could subsequently alter the beclin 1 induced autophagy process. Therefore, it is important to study the components of beclin 1 interactome and factors affecting its expression. Expression of this gene is differentially regulated under different conditions in different cells or tissues. So, the regulation part is important to study as beclin 1 is one of the candidate genes involved in diseases related to autophagy dysfunction. This review focuses on the functions of beclin 1, its interacting partners, regulations at gene and protein level, and the role of beclin 1 interactome in relation to various diseases along with the recent developments in the field.
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Affiliation(s)
- Sargeet Kaur
- Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Solan, 173 234, Himachal Pradesh, India
| | - Harish Changotra
- Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Solan, 173 234, Himachal Pradesh, India.
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6
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Xu J, Feng Z, Wang X, Xiong Y, Wang L, Ye L, Zhang H. hUC-MSCs Exert a Neuroprotective Effect via Anti-apoptotic Mechanisms in a Neonatal HIE Rat Model. Cell Transplant 2019; 28:1552-1559. [PMID: 31512502 PMCID: PMC6923563 DOI: 10.1177/0963689719874769] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
In this study, we investigated how human umbilical cord mesenchymal stem cells exerted a
neuroprotective effect via antiapoptotic mechanisms in a neonatal hypoxic-ischemic
encephalopathy rat model. A total of 78 10-day old (P10) rats were used. After human
umbilical cord mesenchymal stem cells were collected from human umbilical cords and
amplified in culture, they were administered to rat subjects 1 h after induced
hypoxic-ischemic encephalopathy treatment. The short-term (48 h) and long-term (28 day)
outcomes were evaluated after human umbilical cord mesenchymal stem cells treatment using
neurobehavioral function assessment. Triphenyltetrazolium chloride monohydrate staining
was performed at 48 h. Beclin-2 and caspase-3 levels were evaluated with Western blot and
real time polymerase chain reaction at 48 h. Human umbilical cord mesenchymal stem cells
were collected and administrated to hypoxic-ischemic encephalopathy pups by
intracerebroventricular injection. Hypoxic-ischemic encephalopathy typically induced
significant delay in development and caused impairment in both cognitive and motor
functions in rat subjects. Human umbilical cord mesenchymal stem cells were shown to
ameliorate hypoxic-ischemic encephalopathy-induced damage and improve both cognitive and
motor functions. Although hypoxic-ischemic encephalopathy induced significant expression
of caspase-3 and Beclin-2, human umbilical cord mesenchymal stem cells decreased the
expression of both of them. Human umbilical cord mesenchymal stem cells may serve as a
potential treatment to ameliorate brain injury in hypoxic-ischemic encephalopathy
patients.
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Affiliation(s)
- Jianwei Xu
- Department of Cell Biology, Medical College of Soochow University, China.,Center for Tissue Engineering and Stem Cell Research, Guizhou Medical University, China.,Both the authors are co-first authors and contributed equally to this article
| | - Zhanhui Feng
- Neurological Department, Affiliated Hospital of Guizhou Medical University, China.,Both the authors are co-first authors and contributed equally to this article
| | - Xianyao Wang
- Center for Tissue Engineering and Stem Cell Research, Guizhou Medical University, China
| | - Ying Xiong
- School of Basic Medicine, Guizhou Medical University, China
| | - Lan Wang
- Neurological Department, Affiliated Hospital of Guizhou Medical University, China
| | - Lan Ye
- School of Basic Medicine, Guizhou Medical University, China
| | - Huanxiang Zhang
- Department of Cell Biology, Medical College of Soochow University, China
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7
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Ghiaccio V, Chappell M, Rivella S, Breda L. Gene Therapy for Beta-Hemoglobinopathies: Milestones, New Therapies and Challenges. Mol Diagn Ther 2019; 23:173-186. [PMID: 30701409 DOI: 10.1007/s40291-019-00383-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Inherited monogenic disorders such as beta-hemoglobinopathies (BH) are fitting candidates for treatment via gene therapy by gene transfer or gene editing. The reported safety and efficacy of lentiviral vectors in preclinical studies have led to the development of several clinical trials for the addition of a functional beta-globin gene. Across trials, dozens of transfusion-dependent patients with sickle cell disease (SCD) and transfusion-dependent beta-thalassemia (TDT) have been treated via gene therapy and have achieved reduced transfusion requirements. While overall results are encouraging, the outcomes appear to be strongly influenced by the level of lentiviral integration in transduced cells after engraftment, as well as the underlying genotype resulting in thalassemia. In addition, the method of procurement of hematopoietic stem cells can affect their quality and thus the outcome of gene therapy both in SCD and TDT. This suggests that new studies aimed at maximizing the number of corrected cells with long-term self-renewal potential are crucial to ensure successful treatment for every patient. Recent advancements in gene transfer and bone marrow transplantation have improved the success of this approach, and the results obtained by using these strategies demonstrated significant improvement of gene transfer outcome in patients. The advent of new gene-editing technologies has suggested additional therapeutic options. These are primarily focused on correcting the defective beta-globin gene or editing the expression of genes or genomic segments that regulate fetal hemoglobin synthesis. In this review, we aim to establish the potential benefits of gene therapy for BH, to summarize the status of the ongoing trials, and to discuss the possible improvement or direction for future treatments.
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Affiliation(s)
- Valentina Ghiaccio
- Hematology Division, Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
| | - Maxwell Chappell
- Hematology Division, Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
| | - Stefano Rivella
- Hematology Division, Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
| | - Laura Breda
- Hematology Division, Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA.
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8
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Khandia R, Dadar M, Munjal A, Dhama K, Karthik K, Tiwari R, Yatoo MI, Iqbal HMN, Singh KP, Joshi SK, Chaicumpa W. A Comprehensive Review of Autophagy and Its Various Roles in Infectious, Non-Infectious, and Lifestyle Diseases: Current Knowledge and Prospects for Disease Prevention, Novel Drug Design, and Therapy. Cells 2019; 8:cells8070674. [PMID: 31277291 PMCID: PMC6678135 DOI: 10.3390/cells8070674] [Citation(s) in RCA: 145] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 06/04/2019] [Accepted: 06/04/2019] [Indexed: 02/05/2023] Open
Abstract
Autophagy (self-eating) is a conserved cellular degradation process that plays important roles in maintaining homeostasis and preventing nutritional, metabolic, and infection-mediated stresses. Autophagy dysfunction can have various pathological consequences, including tumor progression, pathogen hyper-virulence, and neurodegeneration. This review describes the mechanisms of autophagy and its associations with other cell death mechanisms, including apoptosis, necrosis, necroptosis, and autosis. Autophagy has both positive and negative roles in infection, cancer, neural development, metabolism, cardiovascular health, immunity, and iron homeostasis. Genetic defects in autophagy can have pathological consequences, such as static childhood encephalopathy with neurodegeneration in adulthood, Crohn's disease, hereditary spastic paraparesis, Danon disease, X-linked myopathy with excessive autophagy, and sporadic inclusion body myositis. Further studies on the process of autophagy in different microbial infections could help to design and develop novel therapeutic strategies against important pathogenic microbes. This review on the progress and prospects of autophagy research describes various activators and suppressors, which could be used to design novel intervention strategies against numerous diseases and develop therapeutic drugs to protect human and animal health.
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Affiliation(s)
- Rekha Khandia
- Department of Genetics, Barkatullah University, Bhopal 462 026, Madhya Pradesh, India
| | - Maryam Dadar
- Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj 31975/148, Iran
| | - Ashok Munjal
- Department of Genetics, Barkatullah University, Bhopal 462 026, Madhya Pradesh, India.
| | - Kuldeep Dhama
- Division of Pathology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly 243 122, Uttar Pradesh, India.
| | - Kumaragurubaran Karthik
- Central University Laboratory, Tamil Nadu Veterinary and Animal Sciences University, Madhavaram Milk Colony, Chennai, Tamil Nadu 600051, India
| | - Ruchi Tiwari
- Department of Veterinary Microbiology and Immunology, College of Veterinary Sciences, UP Pandit Deen Dayal Upadhayay Pashu Chikitsa Vigyan Vishwavidyalay Evum Go-Anusandhan Sansthan (DUVASU), Mathura, Uttar Pradesh 281 001, India
| | - Mohd Iqbal Yatoo
- Sher-E-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar, Srinagar 190025, Jammu and Kashmir, India
| | - Hafiz M N Iqbal
- Tecnologico de Monterrey, School of Engineering and Sciences, Campus Monterrey, Ave. Eugenio Garza Sada 2501, Monterrey, N. L., CP 64849, Mexico
| | - Karam Pal Singh
- Division of Pathology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly 243 122, Uttar Pradesh, India
| | - Sunil K Joshi
- Department of Pediatrics, Division of Hematology, Oncology and Bone Marrow Transplantation, University of Miami School of Medicine, Miami, FL 33136, USA.
| | - Wanpen Chaicumpa
- Center of Research Excellence on Therapeutic Proteins and Antibody Engineering, Department of Parasitology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
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