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Martinez-Canton M, Galvan-Alvarez V, Gallego-Selles A, Gelabert-Rebato M, Garcia-Gonzalez E, Gonzalez-Henriquez JJ, Martin-Rincon M, Calbet JAL. Activation of macroautophagy and chaperone-mediated autophagy in human skeletal muscle by high-intensity exercise in normoxia and hypoxia and after recovery with or without post-exercise ischemia. Free Radic Biol Med 2024; 222:607-624. [PMID: 39009244 DOI: 10.1016/j.freeradbiomed.2024.07.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2024] [Revised: 06/25/2024] [Accepted: 07/11/2024] [Indexed: 07/17/2024]
Abstract
Autophagy is essential for the adaptive response to exercise and physiological skeletal muscle functionality. However, the mechanisms leading to the activation of macroautophagy and chaperone-mediated autophagy in human skeletal muscle in response to high-intensity exercise remain elusive. Our findings demonstrate that macroautophagy and chaperone-mediated autophagy are stimulated by high-intensity exercise in normoxia (PIO2: 143 mmHg) and severe acute hypoxia (PIO2: 73 mmHg) in healthy humans. High-intensity exercise induces macroautophagy initiation through AMPKα phosphorylation, which phosphorylates and activates ULK1. ULK1 phosphorylates BECN1 at Ser15, eliciting the dissociation of BECN1-BCL2 crucial for phagophore formation. Besides, high-intensity exercise elevates the LC3B-II:LC3B-I ratio, reduces total SQSTM1/p62 levels, and induces p-Ser349 SQSTM1/p62 phosphorylation, suggesting heightened autophagosome degradation. PHAF1/MYTHO, a novel macroautophagy biomarker, is highly upregulated in response to high-intensity exercise. The latter is accompanied by elevated LAMP2A expression, indicating chaperone-mediated autophagy activation regardless of post-exercise HSPA8/HSC70 downregulation. Despite increased glycolytic metabolism, severe acute hypoxia does not exacerbate the autophagy signaling response. Signaling changes revert within 1 min of recovery with free circulation, while the application of immediate post-exercise ischemia impedes recovery. Our study concludes that macroautophagy and chaperone-mediated autophagy pathways are strongly activated by high-intensity exercise, regardless of PO2, and that oxygenation is necessary to revert these signals to pre-exercise values. PHAF1/MYTHO emerges as a pivotal exercise-responsive autophagy marker positively associated with the LC3B-II:LC3B-I ratio.
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Affiliation(s)
- Miriam Martinez-Canton
- Department of Physical Education, University of Las Palmas de Gran Canaria, Campus Universitario de Tafira s/n, Las Palmas de Gran Canaria, 35017, Spain; Research Institute of Biomedical and Health Sciences (IUIBS), University of Las Palmas de Gran Canaria, Canary Islands, Spain
| | - Victor Galvan-Alvarez
- Department of Physical Education, University of Las Palmas de Gran Canaria, Campus Universitario de Tafira s/n, Las Palmas de Gran Canaria, 35017, Spain; Research Institute of Biomedical and Health Sciences (IUIBS), University of Las Palmas de Gran Canaria, Canary Islands, Spain
| | - Angel Gallego-Selles
- Department of Physical Education, University of Las Palmas de Gran Canaria, Campus Universitario de Tafira s/n, Las Palmas de Gran Canaria, 35017, Spain; Research Institute of Biomedical and Health Sciences (IUIBS), University of Las Palmas de Gran Canaria, Canary Islands, Spain
| | - Miriam Gelabert-Rebato
- Department of Physical Education, University of Las Palmas de Gran Canaria, Campus Universitario de Tafira s/n, Las Palmas de Gran Canaria, 35017, Spain; Research Institute of Biomedical and Health Sciences (IUIBS), University of Las Palmas de Gran Canaria, Canary Islands, Spain
| | - Eduardo Garcia-Gonzalez
- Department of Physical Education, University of Las Palmas de Gran Canaria, Campus Universitario de Tafira s/n, Las Palmas de Gran Canaria, 35017, Spain; Research Institute of Biomedical and Health Sciences (IUIBS), University of Las Palmas de Gran Canaria, Canary Islands, Spain
| | - Juan Jose Gonzalez-Henriquez
- Research Institute of Biomedical and Health Sciences (IUIBS), University of Las Palmas de Gran Canaria, Canary Islands, Spain; Department of Mathematics, University of Las Palmas de Gran Canaria, Campus Universitario de Tafira s/n, Las Palmas de Gran Canaria, 35017, Spain
| | - Marcos Martin-Rincon
- Department of Physical Education, University of Las Palmas de Gran Canaria, Campus Universitario de Tafira s/n, Las Palmas de Gran Canaria, 35017, Spain; Research Institute of Biomedical and Health Sciences (IUIBS), University of Las Palmas de Gran Canaria, Canary Islands, Spain
| | - Jose A L Calbet
- Department of Physical Education, University of Las Palmas de Gran Canaria, Campus Universitario de Tafira s/n, Las Palmas de Gran Canaria, 35017, Spain; Research Institute of Biomedical and Health Sciences (IUIBS), University of Las Palmas de Gran Canaria, Canary Islands, Spain; Department of Physical Performance, Norwegian School of Sport Sciences, Oslo, Norway.
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Guo D, Xiong H, Yang Z, Zhang R, Shi P, Yao Y, Liu M, Xu C, Wang QK. Lysosomal membrane protein TMEM106B modulates hematopoietic stem and progenitor cell proliferation and differentiation by regulating LAMP2A stability. FASEB J 2024; 38:e23870. [PMID: 39120151 DOI: 10.1096/fj.202400727r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 07/04/2024] [Accepted: 07/26/2024] [Indexed: 08/10/2024]
Abstract
Hematopoietic stem and progenitor cells (HSPCs) are successfully employed for hematological transplantations, and impaired HSPC function causes hematological diseases and aging. HSPCs maintain the lifelong homeostasis of blood and immune cells through continuous self-renewal and maintenance of the multilineage differentiation potential. TMEM106B is a transmembrane protein localized on lysosomal membranes and associated with neurodegenerative and cardiovascular diseases; however, its roles in HSPCs and hematopoiesis are unknown. Here, we established tmem106bb-/- knockout (KO) zebrafish and showed that tmem106bb KO reduced the proliferation of HSPCs during definitive hematopoiesis. The differentiation potential of HSPCs to lymphoid lineage was reduced, whereas the myeloid and erythroid differentiation potentials of HPSCs were increased in tmem106bb-/- zebrafish. Similar results were obtained with morpholino knockdown of tmem106bb. Mechanistically, TMEM106B interacted with LAMP2A, the lysosomal associated membrane protein 2A, impaired LAMP2A-Cathepsin A interaction, and enhanced LAMP2A stability; tmem106bb KO or TMEM106B knockdown caused LAMP2A degradation and impairment of chaperone-mediated autophagy (CMA). Knockdown of lamp2a caused similar phenotypes to that in tmem106bb-/- zebrafish, and overexpression of lamp2a rescued the impaired phenotypes of HSPCs in tmem106bb-/- embryos. These results uncover a novel molecular mechanism for the maintenance of HSPC proliferation and differentiation through stabilizing LAMP2A via TMEM106B-LAMP2A interaction.
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Affiliation(s)
- Di Guo
- Center for Human Genome Research, Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Maternal and Child Health Hospital of Hubei Province, Women and Children's Hospital of Hubei Province, Huazhong University of Science and Technology, Wuhan, Hubei, P. R. China
| | - Hongbo Xiong
- Center for Human Genome Research, Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Maternal and Child Health Hospital of Hubei Province, Women and Children's Hospital of Hubei Province, Huazhong University of Science and Technology, Wuhan, Hubei, P. R. China
- Department of Cardiology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, P. R. China
| | - Zhongcheng Yang
- Center for Human Genome Research, Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Maternal and Child Health Hospital of Hubei Province, Women and Children's Hospital of Hubei Province, Huazhong University of Science and Technology, Wuhan, Hubei, P. R. China
| | - Rui Zhang
- Center for Human Genome Research, Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Maternal and Child Health Hospital of Hubei Province, Women and Children's Hospital of Hubei Province, Huazhong University of Science and Technology, Wuhan, Hubei, P. R. China
| | - Pengcheng Shi
- Center for Human Genome Research, Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Maternal and Child Health Hospital of Hubei Province, Women and Children's Hospital of Hubei Province, Huazhong University of Science and Technology, Wuhan, Hubei, P. R. China
| | - Yufeng Yao
- Center for Human Genome Research, Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Maternal and Child Health Hospital of Hubei Province, Women and Children's Hospital of Hubei Province, Huazhong University of Science and Technology, Wuhan, Hubei, P. R. China
| | - Mugen Liu
- Center for Human Genome Research, Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Maternal and Child Health Hospital of Hubei Province, Women and Children's Hospital of Hubei Province, Huazhong University of Science and Technology, Wuhan, Hubei, P. R. China
| | - Chengqi Xu
- Center for Human Genome Research, Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Maternal and Child Health Hospital of Hubei Province, Women and Children's Hospital of Hubei Province, Huazhong University of Science and Technology, Wuhan, Hubei, P. R. China
- Institute of Medical Genomics and School of Biomedical Sciences, Shandong First Medical University, Shandong Academy of Medical Sciences, Jinan, Shandong, P. R. China
| | - Qing K Wang
- Center for Human Genome Research, Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Maternal and Child Health Hospital of Hubei Province, Women and Children's Hospital of Hubei Province, Huazhong University of Science and Technology, Wuhan, Hubei, P. R. China
- Institute of Medical Genomics and School of Biomedical Sciences, Shandong First Medical University, Shandong Academy of Medical Sciences, Jinan, Shandong, P. R. China
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Fote GM, Eapen VV, Lim RG, Yu C, Salazar L, McClure NR, McKnight J, Nguyen TB, Heath MC, Lau AL, Villamil MA, Miramontes R, Kratter IH, Finkbeiner S, Reidling JC, Paulo JA, Kaiser P, Huang L, Housman DE, Thompson LM, Steffan JS. Huntingtin contains an ubiquitin-binding domain and regulates lysosomal targeting of mitochondrial and RNA-binding proteins. Proc Natl Acad Sci U S A 2024; 121:e2319091121. [PMID: 39074279 PMCID: PMC11317567 DOI: 10.1073/pnas.2319091121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 06/20/2024] [Indexed: 07/31/2024] Open
Abstract
Understanding the normal function of the Huntingtin (HTT) protein is of significance in the design and implementation of therapeutic strategies for Huntington's disease (HD). Expansion of the CAG repeat in the HTT gene, encoding an expanded polyglutamine (polyQ) repeat within the HTT protein, causes HD and may compromise HTT's normal activity contributing to HD pathology. Here, we investigated the previously defined role of HTT in autophagy specifically through studying HTT's association with ubiquitin. We find that HTT interacts directly with ubiquitin in vitro. Tandem affinity purification was used to identify ubiquitinated and ubiquitin-associated proteins that copurify with a HTT N-terminal fragment under basal conditions. Copurification is enhanced by HTT polyQ expansion and reduced by mimicking HTT serine 421 phosphorylation. The identified HTT-interacting proteins include RNA-binding proteins (RBPs) involved in mRNA translation, proteins enriched in stress granules, the nuclear proteome, the defective ribosomal products (DRiPs) proteome and the brain-derived autophagosomal proteome. To determine whether the proteins interacting with HTT are autophagic targets, HTT knockout (KO) cells and immunoprecipitation of lysosomes were used to investigate autophagy in the absence of HTT. HTT KO was associated with reduced abundance of mitochondrial proteins in the lysosome, indicating a potential compromise in basal mitophagy, and increased lysosomal abundance of RBPs which may result from compensatory up-regulation of starvation-induced macroautophagy. We suggest HTT is critical for appropriate basal clearance of mitochondrial proteins and RBPs, hence reduced HTT proteostatic function with mutation may contribute to the neuropathology of HD.
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Affiliation(s)
- Gianna M. Fote
- Department of Biological Chemistry, UC Irvine School of Medicine, Irvine, CA92697
- Department of Neurological Surgery, UC Irvine School of Medicine, Orange, CA92868
| | - Vinay V. Eapen
- Department of Cell Biology, Harvard Medical School, Boston, MA02115
- Casma Therapeutics, Cambridge, MA02139
| | - Ryan G. Lim
- The University of California Irvine Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA92697
| | - Clinton Yu
- Department of Physiology and Biophysics, University of California, Irvine, CA92697
| | - Lisa Salazar
- Department of Psychiatry and Human Behavior, UC Irvine School of Medicine, Orange, CA92868
| | - Nicolette R. McClure
- Department of Neurobiology and Behavior, University of California, Irvine, CA92697
| | - Jharrayne McKnight
- Department of Neurobiology and Behavior, University of California, Irvine, CA92697
| | - Thai B. Nguyen
- Department of Neurobiology and Behavior, University of California, Irvine, CA92697
| | - Marie C. Heath
- Department of Neurobiology and Behavior, University of California, Irvine, CA92697
| | - Alice L. Lau
- Department of Psychiatry and Human Behavior, UC Irvine School of Medicine, Orange, CA92868
| | - Mark A. Villamil
- Department of Biological Chemistry, UC Irvine School of Medicine, Irvine, CA92697
| | - Ricardo Miramontes
- Department of Psychiatry and Human Behavior, UC Irvine School of Medicine, Orange, CA92868
| | - Ian H. Kratter
- Center for Systems and Therapeutics, Gladstone Institutes, San Francisco, CA94158
- Stanford Brain Stimulation Lab, Stanford, CA94304
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA94304
| | - Steven Finkbeiner
- Center for Systems and Therapeutics, Gladstone Institutes, San Francisco, CA94158
- Department of Physiology, University of California, San Francisco, CA94158
- Department of Neurology, University of California, San Francisco, CA94158
| | - Jack C. Reidling
- The University of California Irvine Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA92697
| | - Joao A. Paulo
- Department of Cell Biology, Harvard Medical School, Boston, MA02115
| | - Peter Kaiser
- Department of Biological Chemistry, UC Irvine School of Medicine, Irvine, CA92697
| | - Lan Huang
- Department of Physiology and Biophysics, University of California, Irvine, CA92697
| | - David E. Housman
- Koch Institute for Integrative Cancer Research, The Massachusetts Institute of Technology, Cambridge, MA02139
| | - Leslie M. Thompson
- Department of Biological Chemistry, UC Irvine School of Medicine, Irvine, CA92697
- The University of California Irvine Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA92697
- Department of Psychiatry and Human Behavior, UC Irvine School of Medicine, Orange, CA92868
- Department of Neurobiology and Behavior, University of California, Irvine, CA92697
- Center for Epigenetics and Metabolism, University of California, Irvine School of Medicine, University of California, Irvine, CA92697
| | - Joan S. Steffan
- The University of California Irvine Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA92697
- Department of Psychiatry and Human Behavior, UC Irvine School of Medicine, Orange, CA92868
- Center for Epigenetics and Metabolism, University of California, Irvine School of Medicine, University of California, Irvine, CA92697
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4
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Ma C, Liu Y, Fu Z. Implications of endoplasmic reticulum stress and autophagy in aging and cardiovascular diseases. Front Pharmacol 2024; 15:1413853. [PMID: 39119608 PMCID: PMC11306071 DOI: 10.3389/fphar.2024.1413853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Accepted: 06/24/2024] [Indexed: 08/10/2024] Open
Abstract
The average lifespan of humans has been increasing, resulting in a rapidly rising percentage of older individuals and high morbidity of aging-associated diseases, especially cardiovascular diseases (CVDs). Diverse intracellular and extracellular factors that interrupt homeostatic functions in the endoplasmic reticulum (ER) induce ER stress. Cells employ a dynamic signaling pathway of unfolded protein response (UPR) to buffer ER stress. Recent studies have demonstrated that ER stress triggers various cellular processes associated with aging and many aging-associated diseases, including CVDs. Autophagy is a conserved process involving lysosomal degradation and recycling of cytoplasmic components, proteins, organelles, and pathogens that invade the cytoplasm. Autophagy is vital for combating the adverse influence of aging on the heart. The present report summarizes recent studies on the mechanism of ER stress and autophagy and their overlap in aging and on CVD pathogenesis in the context of aging. It also discusses possible therapeutic interventions targeting ER stress and autophagy that might delay aging and prevent or treat CVDs.
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Affiliation(s)
- Chenguang Ma
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yang Liu
- 32295 Troops of P.L.A, Liaoyang, China
| | - Zhiling Fu
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang, China
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5
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Fu C, Yang N, Chuang JZ, Nakajima N, Iraha S, Roy N, Wu Z, Jiang Z, Otsu W, Radu RA, Yang HH, Lee MP, Worgall TS, Xiong WC, Sung CH. Mutant mice with rod-specific VPS35 deletion exhibit retinal α-synuclein pathology-associated degeneration. Nat Commun 2024; 15:5970. [PMID: 39043666 PMCID: PMC11266608 DOI: 10.1038/s41467-024-50189-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 06/28/2024] [Indexed: 07/25/2024] Open
Abstract
Vacuolar protein sorting 35 (VPS35), the core component of the retromer complex which regulates endosomal trafficking, is genetically linked with Parkinson's disease (PD). Impaired vision is a common non-motor manifestation of PD. Here, we show mouse retinas with VPS35-deficient rods exhibit synapse loss and visual deficit, followed by progressive degeneration concomitant with the emergence of Lewy body-like inclusions and phospho-α-synuclein (P-αSyn) aggregation. Ultrastructural analyses reveal VPS35-deficient rods accumulate aggregates in late endosomes, deposited as lipofuscins bound to P-αSyn. Mechanistically, we uncover a protein network of VPS35 and its interaction with HSC70. VPS35 deficiency promotes sequestration of HSC70 and P-αSyn aggregation in late endosomes. Microglia which engulf lipofuscins and P-αSyn aggregates are activated, displaying autofluorescence, observed as bright dots in fundus imaging of live animals, coinciding with pathology onset and progression. The Rod∆Vps35 mouse line is a valuable tool for further mechanistic investigation of αSyn lesions and retinal degenerative diseases.
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Affiliation(s)
- Cheng Fu
- Department of Ophthalmology, Margaret M. Dyson Vision Research Institute, Weill Cornell Medicine, 1300 York Avenue, New York, NY, 10065, USA
| | - Nan Yang
- Department of Ophthalmology, Margaret M. Dyson Vision Research Institute, Weill Cornell Medicine, 1300 York Avenue, New York, NY, 10065, USA
| | - Jen-Zen Chuang
- Department of Ophthalmology, Margaret M. Dyson Vision Research Institute, Weill Cornell Medicine, 1300 York Avenue, New York, NY, 10065, USA
| | - Nobuyuki Nakajima
- Department of Ophthalmology, Margaret M. Dyson Vision Research Institute, Weill Cornell Medicine, 1300 York Avenue, New York, NY, 10065, USA
- Department of Urology, Tokai University School of Medicipne, Tokyo, Japan
| | - Satoshi Iraha
- Department of Ophthalmology, Margaret M. Dyson Vision Research Institute, Weill Cornell Medicine, 1300 York Avenue, New York, NY, 10065, USA
- Department of Ophthalmology, Faculty of Life Sciences, Kumamoto University; Department of Ophthalmology, National Sanatorium Kikuchi Keifuen, Kumamoto, Japan
| | - Neeta Roy
- Department of Ophthalmology, Margaret M. Dyson Vision Research Institute, Weill Cornell Medicine, 1300 York Avenue, New York, NY, 10065, USA
| | - Zhenquan Wu
- Department of Ophthalmology, Margaret M. Dyson Vision Research Institute, Weill Cornell Medicine, 1300 York Avenue, New York, NY, 10065, USA
| | - Zhichun Jiang
- UCLA Stein Eye Institute, and Department of Ophthalmology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Wataru Otsu
- Department of Ophthalmology, Margaret M. Dyson Vision Research Institute, Weill Cornell Medicine, 1300 York Avenue, New York, NY, 10065, USA
- Department of Biomedical Research Laboratory, Gifu Pharmaceutical University, Gifu, Japan
| | - Roxana A Radu
- UCLA Stein Eye Institute, and Department of Ophthalmology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Howard Hua Yang
- The Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Maxwell Ping Lee
- The Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Tilla S Worgall
- Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY, USA
| | - Wen-Cheng Xiong
- Department of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, OH, USA
| | - Ching-Hwa Sung
- Department of Ophthalmology, Margaret M. Dyson Vision Research Institute, Weill Cornell Medicine, 1300 York Avenue, New York, NY, 10065, USA.
- Department of Cell and Developmental Biology, Weill Cornell Medicine, 1300 York Avenue, New York, NY, 10065, USA.
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Jafari M, Macho-González A, Diaz A, Lindenau K, Santiago-Fernández O, Zeng M, Massey AC, de Cabo R, Kaushik S, Cuervo AM. Calorie restriction and calorie-restriction mimetics activate chaperone-mediated autophagy. Proc Natl Acad Sci U S A 2024; 121:e2317945121. [PMID: 38889154 PMCID: PMC11214046 DOI: 10.1073/pnas.2317945121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 05/20/2024] [Indexed: 06/20/2024] Open
Abstract
Chaperone-mediated autophagy (CMA) is part of the mammalian cellular proteostasis network that ensures protein quality control, maintenance of proteome homeostasis, and proteome changes required for the adaptation to stress. Loss of proteostasis is one of the hallmarks of aging. CMA decreases with age in multiple rodent tissues and human cell types. A decrease in lysosomal levels of the lysosome-associated membrane protein type 2A (LAMP2A), the CMA receptor, has been identified as a main reason for declined CMA in aging. Here, we report constitutive activation of CMA with calorie restriction (CR), an intervention that extends healthspan, in old rodent livers and in an in vitro model of CR with cultured fibroblasts. We found that CR-mediated upregulation of CMA is due to improved stability of LAMP2A at the lysosome membrane. We also explore the translational value of our observations using calorie-restriction mimetics (CRMs), pharmacologically active substances that reproduce the biochemical and functional effects of CR. We show that acute treatment of old mice with CRMs also robustly activates CMA in several tissues and that this activation is required for the higher resistance to lipid dietary challenges conferred by treatment with CRMs. We conclude that part of the beneficial effects associated with CR/CRMs could be a consequence of the constitutive activation of CMA mediated by these interventions.
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Affiliation(s)
- Maryam Jafari
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, BronxNY10461
- Institute for Aging Research, Albert Einstein College of Medicine, Bronx, NY10461
| | - Adrián Macho-González
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, BronxNY10461
- Institute for Aging Research, Albert Einstein College of Medicine, Bronx, NY10461
| | - Antonio Diaz
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, BronxNY10461
- Institute for Aging Research, Albert Einstein College of Medicine, Bronx, NY10461
| | - Kristen Lindenau
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, BronxNY10461
- Institute for Aging Research, Albert Einstein College of Medicine, Bronx, NY10461
| | - Olaya Santiago-Fernández
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, BronxNY10461
- Institute for Aging Research, Albert Einstein College of Medicine, Bronx, NY10461
| | - Mei Zeng
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, BronxNY10461
- Institute for Aging Research, Albert Einstein College of Medicine, Bronx, NY10461
| | - Ashish C. Massey
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, BronxNY10461
- Institute for Aging Research, Albert Einstein College of Medicine, Bronx, NY10461
| | - Rafael de Cabo
- Translational Gerontology Branch, National Institute on Aging, Baltimore, MD21224
| | - Susmita Kaushik
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, BronxNY10461
- Institute for Aging Research, Albert Einstein College of Medicine, Bronx, NY10461
| | - Ana Maria Cuervo
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, BronxNY10461
- Institute for Aging Research, Albert Einstein College of Medicine, Bronx, NY10461
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY10461
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7
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Jia Q, Li J, Guo X, Li Y, Wu Y, Peng Y, Fang Z, Zhang X. Neuroprotective effects of chaperone-mediated autophagy in neurodegenerative diseases. Neural Regen Res 2024; 19:1291-1298. [PMID: 37905878 DOI: 10.4103/1673-5374.385848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 07/17/2023] [Indexed: 11/02/2023] Open
Abstract
ABSTRACT Chaperone-mediated autophagy is one of three types of autophagy and is characterized by the selective degradation of proteins. Chaperone-mediated autophagy contributes to energy balance and helps maintain cellular homeostasis, while providing nutrients and support for cell survival. Chaperone-mediated autophagy activity can be detected in almost all cells, including neurons. Owing to the extreme sensitivity of neurons to their environmental changes, maintaining neuronal homeostasis is critical for neuronal growth and survival. Chaperone-mediated autophagy dysfunction is closely related to central nervous system diseases. It has been shown that neuronal damage and cell death are accompanied by chaperone-mediated autophagy dysfunction. Under certain conditions, regulation of chaperone-mediated autophagy activity attenuates neurotoxicity. In this paper, we review the changes in chaperone-mediated autophagy in neurodegenerative diseases, brain injury, glioma, and autoimmune diseases. We also summarize the most recent research progress on chaperone-mediated autophagy regulation and discuss the potential of chaperone-mediated autophagy as a therapeutic target for central nervous system diseases.
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Affiliation(s)
- Qi Jia
- Department of Anesthesiology and Perioperative Medicine and Department of Intensive Care Unit, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - Jin Li
- Department of Anesthesiology and Perioperative Medicine and Department of Intensive Care Unit, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi Province, China
- Department of Critical Care Medicine, Air Force Medical Center, Beijing, China
| | - Xiaofeng Guo
- Department of Anesthesiology and Perioperative Medicine and Department of Intensive Care Unit, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - Yi Li
- Department of Anesthesiology and Perioperative Medicine and Department of Intensive Care Unit, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - You Wu
- Department of Anesthesiology and Perioperative Medicine and Department of Intensive Care Unit, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - Yuliang Peng
- Department of Anesthesiology and Perioperative Medicine and Department of Intensive Care Unit, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - Zongping Fang
- Department of Anesthesiology and Perioperative Medicine and Department of Intensive Care Unit, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi Province, China
- Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Xijing Zhang
- Department of Anesthesiology and Perioperative Medicine and Department of Intensive Care Unit, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi Province, China
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8
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Yamashima T, Mochly-Rosen D, Wakatsuki S, Mizukoshi E, Seike T, Larus IM, Chen CH, Takemura M, Saito H, Ohashi A. Cleavage of Hsp70.1 causes lysosomal cell death under stress conditions. Front Mol Biosci 2024; 11:1378656. [PMID: 38859931 PMCID: PMC11163108 DOI: 10.3389/fmolb.2024.1378656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 05/03/2024] [Indexed: 06/12/2024] Open
Abstract
Autophagy mediates the degradation of intracellular macromolecules and organelles within lysosomes. There are three types of autophagy: macroautophagy, microautophagy, and chaperone-mediated autophagy. Heat shock protein 70.1 (Hsp70.1) exhibits dual functions as a chaperone protein and a lysosomal membrane stabilizer. Since chaperone-mediated autophagy participates in the recycling of ∼30% cytosolic proteins, its disorder causes cell susceptibility to stress conditions. Cargo proteins destined for degradation such as amyloid precursor protein and tau protein are trafficked by Hsp70.1 from the cytosol into lysosomes. Hsp70.1 is composed of an N-terminal nucleotide-binding domain (NBD) and a C-terminal domain that binds to cargo proteins, termed the substrate-binding domain (SBD). The NBD and SBD are connected by the interdomain linker LL1, which modulates the allosteric structure of Hsp70.1 in response to ADP/ATP binding. After the passage of the Hsp70.1-cargo complex through the lysosomal limiting membrane, high-affinity binding of the positive-charged SBD with negative-charged bis(monoacylglycero)phosphate (BMP) at the internal vesicular membranes activates acid sphingomyelinase to generate ceramide for stabilizing lysosomal membranes. As the integrity of the lysosomal limiting membrane is critical to ensure cargo protein degradation within the acidic lumen, the disintegration of the lysosomal limiting membrane is lethal to cells. After the intake of high-fat diets, however, β-oxidation of fatty acids in the mitochondria generates reactive oxygen species, which enhance the oxidation of membrane linoleic acids to produce 4-hydroxy-2-nonenal (4-HNE). In addition, 4-HNE is produced during the heating of linoleic acid-rich vegetable oils and incorporated into the body via deep-fried foods. This endogenous and exogenous 4-HNE synergically causes an increase in its serum and organ levels to induce carbonylation of Hsp70.1 at Arg469, which facilitates its conformational change and access of activated μ-calpain to LL1. Therefore, the cleavage of Hsp70.1 occurs prior to its influx into the lysosomal lumen, which leads to lysosomal membrane permeabilization/rupture. The resultant leakage of cathepsins is responsible for lysosomal cell death, which would be one of the causative factors of lifestyle-related diseases.
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Affiliation(s)
- Tetsumori Yamashima
- Department of Psychiatry and Behavioral Science, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Daria Mochly-Rosen
- Department of Chemical and Systems Biology, Stanford University School of Medicine, Stanford, CA, United States
| | - Soichi Wakatsuki
- Department of Structural Biology, Stanford University School of Medicine, Stanford, CA, United States
| | - Eishiro Mizukoshi
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Takuya Seike
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
- Department of Chemical and Systems Biology, Stanford University School of Medicine, Stanford, CA, United States
| | - Isabel Maria Larus
- Department of Structural Biology, Stanford University School of Medicine, Stanford, CA, United States
| | - Che-Hong Chen
- Department of Chemical and Systems Biology, Stanford University School of Medicine, Stanford, CA, United States
| | - Miho Takemura
- Laboratory of Gene Function, Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, Nonoichi, Japan
| | - Hisashi Saito
- Division of Collaborative Research and Development, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Kashiwa, Japan
| | - Akihiro Ohashi
- Division of Collaborative Research and Development, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Kashiwa, Japan
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9
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Vélez EJ, Schnebert S, Goguet M, Balbuena-Pecino S, Dias K, Beauclair L, Fontagné-Dicharry S, Véron V, Depincé A, Beaumatin F, Herpin A, Seiliez I. Chaperone-mediated autophagy protects against hyperglycemic stress. Autophagy 2024; 20:752-768. [PMID: 37798944 PMCID: PMC11062381 DOI: 10.1080/15548627.2023.2267415] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 10/02/2023] [Indexed: 10/07/2023] Open
Abstract
Chaperone-mediated autophagy (CMA) is a major pathway of lysosomal proteolysis critical for cellular homeostasis and metabolism, and whose defects have been associated with several human pathologies. While CMA has been well described in mammals, functional evidence has only recently been documented in fish, opening up new perspectives to tackle this function under a novel angle. Now we propose to explore CMA functions in the rainbow trout (RT, Oncorhynchus mykiss), a fish species recognized as a model organism of glucose intolerance and characterized by the presence of two paralogs of the CMA-limiting factor Lamp2A (lysosomal associated membrane protein 2A). To this end, we validated a fluorescent reporter (KFERQ-PA-mCherry1) previously used to track functional CMA in mammalian cells, in an RT hepatoma-derived cell line (RTH-149). We found that incubation of cells with high-glucose levels (HG, 25 mM) induced translocation of the CMA reporter to lysosomes and/or late endosomes in a KFERQ- and Lamp2A-dependent manner, as well as reduced its half-life compared to the control (5 mM), thus demonstrating increased CMA flux. Furthermore, we observed that activation of CMA upon HG exposure was mediated by generation of mitochondrial reactive oxygen species, and involving the antioxidant transcription factor Nfe2l2/Nrf2 (nfe2 like bZIP transcription factor 2). Finally, we demonstrated that CMA plays an important protective role against HG-induced stress, primarily mediated by one of the two RT Lamp2As. Together, our results provide unequivocal evidence for CMA activity existence in RT and highlight both the role and regulation of CMA during glucose-related metabolic disorders.Abbreviations: AREs: antioxidant response elements; CHC: α-cyano -4-hydroxycinnamic acid; Chr: chromosome; CMA: chaperone-mediated autophagy; CT: control; DMF: dimethyl fumarate; Emi: endosomal microautophagy; HG: high-glucose; HMOX1: heme oxygenase 1; H2O2: hydrogen peroxide; KFERQ: lysine-phenylalanine-glutamate-arginine-glutamine; LAMP1: lysosomal associated membrane protein 1; LAMP2A: lysosomal associated membrane protein 2A; MCC: Manders' correlation coefficient; Manders' correlation coefficient Mo: morpholino oligonucleotide; NAC: N-acetyl cysteine; NFE2L2/NRF2: NFE2 like bZIP transcription factor 2; PA-mCherry: photoactivable mCherry; PCC: Pearson's correlation coefficient; ROS: reactive oxygen species; RT: rainbow trout; siRNAs: small interfering RNAs; SOD: superoxide dismutase; Tsg101: tumor susceptibility 101; TTFA: 2-thenoyltrifluoroacetone; WGD: whole-genome duplication.
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Affiliation(s)
- Emilio J. Vélez
- Université de Pau et des Pays de l‘Adour, E2S UPPA, INRAE, UMR1419 Nutrition Métabolisme et Aquaculture, Saint-Pée-sur-Nivelle, France
| | - Simon Schnebert
- Université de Pau et des Pays de l‘Adour, E2S UPPA, INRAE, UMR1419 Nutrition Métabolisme et Aquaculture, Saint-Pée-sur-Nivelle, France
| | - Maxime Goguet
- Université de Pau et des Pays de l‘Adour, E2S UPPA, INRAE, UMR1419 Nutrition Métabolisme et Aquaculture, Saint-Pée-sur-Nivelle, France
| | - Sara Balbuena-Pecino
- Université de Pau et des Pays de l‘Adour, E2S UPPA, INRAE, UMR1419 Nutrition Métabolisme et Aquaculture, Saint-Pée-sur-Nivelle, France
| | - Karine Dias
- Université de Pau et des Pays de l‘Adour, E2S UPPA, INRAE, UMR1419 Nutrition Métabolisme et Aquaculture, Saint-Pée-sur-Nivelle, France
| | - Linda Beauclair
- Université de Pau et des Pays de l‘Adour, E2S UPPA, INRAE, UMR1419 Nutrition Métabolisme et Aquaculture, Saint-Pée-sur-Nivelle, France
| | - Stéphanie Fontagné-Dicharry
- Université de Pau et des Pays de l‘Adour, E2S UPPA, INRAE, UMR1419 Nutrition Métabolisme et Aquaculture, Saint-Pée-sur-Nivelle, France
| | - Vincent Véron
- Université de Pau et des Pays de l‘Adour, E2S UPPA, INRAE, UMR1419 Nutrition Métabolisme et Aquaculture, Saint-Pée-sur-Nivelle, France
| | - Alexandra Depincé
- INRAE, UR1037 Laboratory of Fish Physiology and Genomics, Campus de Beaulieu, Rennes, France
| | - Florian Beaumatin
- Université de Pau et des Pays de l‘Adour, E2S UPPA, INRAE, UMR1419 Nutrition Métabolisme et Aquaculture, Saint-Pée-sur-Nivelle, France
| | - Amaury Herpin
- INRAE, UR1037 Laboratory of Fish Physiology and Genomics, Campus de Beaulieu, Rennes, France
| | - Iban Seiliez
- Université de Pau et des Pays de l‘Adour, E2S UPPA, INRAE, UMR1419 Nutrition Métabolisme et Aquaculture, Saint-Pée-sur-Nivelle, France
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10
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Liu Y, Li M, Lin M, Liu X, Guo H, Tan J, Hu L, Li J, Zhou Q. ALKBH1 promotes HIF-1α-mediated glycolysis by inhibiting N-glycosylation of LAMP2A. Cell Mol Life Sci 2024; 81:130. [PMID: 38472355 DOI: 10.1007/s00018-024-05152-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 01/25/2024] [Accepted: 02/01/2024] [Indexed: 03/14/2024]
Abstract
ALKBH1 is a typical demethylase of nucleic acids, which is correlated with multiple types of biological processes and human diseases. Recent studies are focused on the demethylation of ALKBH1, but little is known about its non-demethylase function. Here, we demonstrate that ALKBH1 regulates the glycolysis process through HIF-1α signaling in a demethylase-independent manner. We observed that depletion of ALKBH1 inhibits glycolysis flux and extracellular acidification, which is attributable to reduced HIF-1α protein levels, and it can be rescued by reintroducing HIF-1α. Mechanistically, ALKBH1 knockdown enhances chaperone-mediated autophagy (CMA)-mediated HIF-1α degradation by facilitating the interaction between HIF-1α and LAMP2A. Furthermore, we identify that ALKBH1 competitively binds to the OST48, resulting in compromised structural integrity of oligosaccharyltransferase (OST) complex and subsequent defective N-glycosylation of LAMPs, particularly LAMP2A. Abnormal glycosylation of LAMP2A disrupts lysosomal homeostasis and hinders the efficient degradation of HIF-1α through CMA. Moreover, NGI-1, a small-molecule inhibitor that selectively targets the OST complex, could inhibit the glycosylation of LAMPs caused by ALKBH1 silencing, leading to impaired CMA activity and disruption of lysosomal homeostasis. In conclusion, we have revealed a non-demethylation role of ALKBH1 in regulating N-glycosylation of LAMPs by interacting with OST subunits and CMA-mediated degradation of HIF-1α.
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Affiliation(s)
- Yanyan Liu
- Key Laboratory of Regenerative Medicine of Ministry of Education, The First Affiliated Hospital, Jinan University, Guangzhou, 510632, Guangdong, China
- The College of Life Science and Technology, Jinan University, Guangzhou, 510632, Guangdong, China
- The Biomedical Translational Research Institute, Health Science Center (School of Medicine), Jinan University, Guangzhou, 510632, Guangdong, China
| | - Mengmeng Li
- The College of Life Science and Technology, Jinan University, Guangzhou, 510632, Guangdong, China
- The Biomedical Translational Research Institute, Health Science Center (School of Medicine), Jinan University, Guangzhou, 510632, Guangdong, China
| | - Miao Lin
- Key Laboratory of Regenerative Medicine of Ministry of Education, The First Affiliated Hospital, Jinan University, Guangzhou, 510632, Guangdong, China
- The Biomedical Translational Research Institute, Health Science Center (School of Medicine), Jinan University, Guangzhou, 510632, Guangdong, China
| | - Xinjie Liu
- The College of Life Science and Technology, Jinan University, Guangzhou, 510632, Guangdong, China
- The Biomedical Translational Research Institute, Health Science Center (School of Medicine), Jinan University, Guangzhou, 510632, Guangdong, China
| | - Haolin Guo
- The College of Life Science and Technology, Jinan University, Guangzhou, 510632, Guangdong, China
- The Biomedical Translational Research Institute, Health Science Center (School of Medicine), Jinan University, Guangzhou, 510632, Guangdong, China
| | - Junyang Tan
- Key Laboratory of Regenerative Medicine of Ministry of Education, The First Affiliated Hospital, Jinan University, Guangzhou, 510632, Guangdong, China
- The Biomedical Translational Research Institute, Health Science Center (School of Medicine), Jinan University, Guangzhou, 510632, Guangdong, China
| | - Liubing Hu
- Key Laboratory of Regenerative Medicine of Ministry of Education, The First Affiliated Hospital, Jinan University, Guangzhou, 510632, Guangdong, China
- The Biomedical Translational Research Institute, Health Science Center (School of Medicine), Jinan University, Guangzhou, 510632, Guangdong, China
| | - Jianshuang Li
- The College of Life Science and Technology, Jinan University, Guangzhou, 510632, Guangdong, China.
- The Biomedical Translational Research Institute, Health Science Center (School of Medicine), Jinan University, Guangzhou, 510632, Guangdong, China.
| | - Qinghua Zhou
- Key Laboratory of Regenerative Medicine of Ministry of Education, The First Affiliated Hospital, Jinan University, Guangzhou, 510632, Guangdong, China.
- The College of Life Science and Technology, Jinan University, Guangzhou, 510632, Guangdong, China.
- The Biomedical Translational Research Institute, Health Science Center (School of Medicine), Jinan University, Guangzhou, 510632, Guangdong, China.
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11
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Hendrixson JA, James A, Akel NS, Laster DJ, Crawford JA, Berryhill SB, Onal M. Loss of chaperone-mediated autophagy does not alter age-related bone loss in male mice. FASEB Bioadv 2024; 6:73-84. [PMID: 38463697 PMCID: PMC10918985 DOI: 10.1096/fba.2023-00133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 01/18/2024] [Accepted: 02/06/2024] [Indexed: 03/12/2024] Open
Abstract
Chaperone-mediated autophagy (CMA) is a lysosome-dependent degradation pathway that eliminates proteins that are damaged, partially unfolded, or targeted for selective proteome remodeling. CMA contributes to several cellular processes, including stress response and proteostasis. Age-associated increase in cellular stressors and decrease in CMA contribute to pathologies associated with aging in various tissues. CMA contributes to bone homeostasis in young mice. An age-associated reduction in CMA was reported in osteoblast lineage cells; however, whether declining CMA contributes to skeletal aging is unknown. Herein we show that cellular stressors stimulate CMA in UAMS-32 osteoblastic cells. Moreover, the knockdown of an essential component of the CMA pathway, LAMP2A, sensitizes osteoblasts to cell death caused by DNA damage, ER stress, and oxidative stress. As elevations in these stressors are thought to contribute to age-related bone loss, we hypothesized that declining CMA contributes to the age-associated decline in bone formation by sensitizing osteoblast lineage cells to elevated stressors. To test this, we aged male CMA-deficient mice and controls up to 24 months of age and examined age-associated changes in bone mass and architecture. We showed that lack of CMA did not alter age-associated decline in bone mineral density as measured by dual x-ray absorptiometry (DXA). Moreover, microCT analysis performed at 24 months of age showed that vertebral cancellous bone volume, cortical thickness, and porosity of CMA-deficient and control mice were similar. Taken together, these results suggest that reduction of CMA does not contribute to age-related bone loss.
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Affiliation(s)
- James A Hendrixson
- Department of Physiology and Cell Biology University of Arkansas for Medical Sciences Little Rock Arkansas USA
| | - Alicen James
- Department of Physiology and Cell Biology University of Arkansas for Medical Sciences Little Rock Arkansas USA
| | - Nisreen S Akel
- Department of Physiology and Cell Biology University of Arkansas for Medical Sciences Little Rock Arkansas USA
| | - Dominique J Laster
- Department of Physiology and Cell Biology University of Arkansas for Medical Sciences Little Rock Arkansas USA
| | - Julie A Crawford
- Center for Musculoskeletal Disease Research (CMDR) University of Arkansas for Medical Sciences Little Rock Arkansas USA
- Division of Endocrinology University of Arkansas for Medical Sciences Little Rock Arkansas USA
| | - Stuart B Berryhill
- Center for Musculoskeletal Disease Research (CMDR) University of Arkansas for Medical Sciences Little Rock Arkansas USA
- Division of Endocrinology University of Arkansas for Medical Sciences Little Rock Arkansas USA
| | - Melda Onal
- Department of Physiology and Cell Biology University of Arkansas for Medical Sciences Little Rock Arkansas USA
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12
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Klip A, De Bock K, Bilan PJ, Richter EA. Transcellular Barriers to Glucose Delivery in the Body. Annu Rev Physiol 2024; 86:149-173. [PMID: 38345907 DOI: 10.1146/annurev-physiol-042022-031657] [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] [Indexed: 02/15/2024]
Abstract
Glucose is the universal fuel of most mammalian cells, and it is largely replenished through dietary intake. Glucose availability to tissues is paramount for the maintenance of homeostatic energetics and, hence, supply should match demand by the consuming organs. In its journey through the body, glucose encounters cellular barriers for transit at the levels of the absorbing intestinal epithelial wall, the renal epithelium mediating glucose reabsorption, and the tight capillary endothelia (especially in the brain). Glucose transiting through these cellular barriers must escape degradation to ensure optimal glucose delivery to the bloodstream or tissues. The liver, which stores glycogen and generates glucose de novo, must similarly be able to release it intact to the circulation. We present the most up-to-date knowledge on glucose handling by the gut, liver, brain endothelium, and kidney, and discuss underlying molecular mechanisms and open questions. Diseases associated with defects in glucose delivery and homeostasis are also briefly addressed. We propose that the universal problem of sparing glucose from catabolism in favor of translocation across the barriers posed by epithelia and endothelia is resolved through common mechanisms involving glucose transfer to the endoplasmic reticulum, from where glucose exits the cells via unconventional cellular mechanisms.
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Affiliation(s)
- Amira Klip
- Cell Biology Program, The Hospital for Sick Children, Toronto, Ontario, Canada;
| | - Katrien De Bock
- Laboratory of Exercise and Health, Department of Health Sciences and Technology, Swiss Federal Institute of Technology (ETH), Zürich, Switzerland
| | - Philip J Bilan
- Cell Biology Program, The Hospital for Sick Children, Toronto, Ontario, Canada;
| | - Erik A Richter
- The August Krogh Section for Molecular Physiology, Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
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13
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Maestri A, Garagnani P, Pedrelli M, Hagberg CE, Parini P, Ehrenborg E. Lipid droplets, autophagy, and ageing: A cell-specific tale. Ageing Res Rev 2024; 94:102194. [PMID: 38218464 DOI: 10.1016/j.arr.2024.102194] [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: 10/14/2023] [Revised: 12/22/2023] [Accepted: 01/08/2024] [Indexed: 01/15/2024]
Abstract
Lipid droplets are the essential organelle for storing lipids in a cell. Within the variety of the human body, different cells store, utilize and release lipids in different ways, depending on their intrinsic function. However, these differences are not well characterized and, especially in the context of ageing, represent a key factor for cardiometabolic diseases. Whole body lipid homeostasis is a central interest in the field of cardiometabolic diseases. In this review we characterize lipid droplets and their utilization via autophagy and describe their diverse fate in three cells types central in cardiometabolic dysfunctions: adipocytes, hepatocytes, and macrophages.
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Affiliation(s)
- Alice Maestri
- Division of Cardiovascular Medicine, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden; Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Paolo Garagnani
- Department of Medical and Surgical Sciences (DIMEC), University of Bologna, Bologna, Italy; IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Matteo Pedrelli
- Cardio Metabolic Unit, Department of Laboratory Medicine, and Department of Medicine (Huddinge), Karolinska Institutet, Stockholm, Sweden; Medicine Unit of Endocrinology, Theme Inflammation and Ageing, Karolinska University Hospital, Stockholm, Sweden
| | - Carolina E Hagberg
- Division of Cardiovascular Medicine, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden; Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Paolo Parini
- Cardio Metabolic Unit, Department of Laboratory Medicine, and Department of Medicine (Huddinge), Karolinska Institutet, Stockholm, Sweden; Medicine Unit of Endocrinology, Theme Inflammation and Ageing, Karolinska University Hospital, Stockholm, Sweden
| | - Ewa Ehrenborg
- Division of Cardiovascular Medicine, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden; Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden.
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14
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Skeyni A, Pradignac A, Matz RL, Terrand J, Boucher P. Cholesterol trafficking, lysosomal function, and atherosclerosis. Am J Physiol Cell Physiol 2024; 326:C473-C486. [PMID: 38145298 DOI: 10.1152/ajpcell.00415.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 12/17/2023] [Accepted: 12/18/2023] [Indexed: 12/26/2023]
Abstract
Despite years of study and major research advances over the past 50 years, atherosclerotic diseases continue to rank as the leading global cause of death. Accumulation of cholesterol within the vascular wall remains the main problem and represents one of the early steps in the development of atherosclerotic lesions. There is a complex relationship between vesicular cholesterol transport and atherosclerosis, and abnormalities in cholesterol trafficking can contribute to the development and progression of the lesions. The dysregulation of vesicular cholesterol transport and lysosomal function fosters the buildup of cholesterol within various intracytoplasmic compartments, including lysosomes and lipid droplets. This, in turn, promotes the hallmark formation of foam cells, a defining feature of early atherosclerosis. Multiple cellular processes, encompassing endocytosis, exocytosis, intracellular trafficking, and autophagy, play crucial roles in influencing foam cell formation and atherosclerotic plaque stability. In this review, we highlight recent advances in the understanding of the intricate mechanisms of vesicular cholesterol transport and its relationship with atherosclerosis and discuss the importance of understanding these mechanisms in developing strategies to prevent or treat this prevalent cardiovascular disease.
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Affiliation(s)
- Alaa Skeyni
- UMR-S INSERM 1109, University of Strasbourg, Strasbourg, France
| | - Alain Pradignac
- UMR-S INSERM 1109, University of Strasbourg, Strasbourg, France
| | - Rachel L Matz
- UMR-S INSERM 1109, University of Strasbourg, Strasbourg, France
| | - Jérôme Terrand
- UMR-S INSERM 1109, University of Strasbourg, Strasbourg, France
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15
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Valdor R, Martinez-Vicente M. The Role of Chaperone-Mediated Autophagy in Tissue Homeostasis and Disease Pathogenesis. Biomedicines 2024; 12:257. [PMID: 38397859 PMCID: PMC10887052 DOI: 10.3390/biomedicines12020257] [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: 12/07/2023] [Revised: 01/17/2024] [Accepted: 01/18/2024] [Indexed: 02/25/2024] Open
Abstract
Chaperone-mediated autophagy (CMA) is a selective proteolytic pathway in the lysosomes. Proteins are recognized one by one through the detection of a KFERQ motif or, at least, a KFERQ-like motif, by a heat shock cognate protein 70 (Hsc70), a molecular chaperone. CMA substrates are recognized and delivered to a lysosomal CMA receptor, lysosome-associated membrane protein 2A (LAMP-2A), the only limiting component of this pathway, and transported to the lysosomal lumen with the help of another resident chaperone HSp90. Since approximately 75% of proteins are reported to have canonical, phosphorylation-generated, or acetylation-generated KFERQ motifs, CMA maintains intracellular protein homeostasis and regulates specific functions in the cells in different tissues. CMA also regulates physiologic functions in different organs, and is then implicated in disease pathogenesis related to aging, cancer, and the central nervous and immune systems. In this minireview, we have summarized the most important findings on the role of CMA in tissue homeostasis and disease pathogenesis, updating the recent advances for this Special Issue.
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Affiliation(s)
- Rut Valdor
- Immunology-Cell Therapy and Hematopoietic Transplant Group, Department of Biochemistry and Molecular Biology B, University of Murcia (UMU), 30100 Murcia, Spain
- Unit of Autophagy, Immune Response and Tolerance in Pathologic Processes, Biomedical Research Institute of Murcia-Pascual Parrilla (IMIB), 30120 Murcia, Spain
| | - Marta Martinez-Vicente
- Autophagy and Lysosomal Dysfunction Lab, Neurodegenerative Diseases Research Group, Vall d’Hebron Research Institute—CIBERNED, 08035 Barcelona, Spain
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16
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Nguyen TTP, Nguyen PL, Park SH, Jung CH, Jeon TI. Hydrogen Sulfide and Liver Health: Insights into Liver Diseases. Antioxid Redox Signal 2024; 40:122-144. [PMID: 37917113 DOI: 10.1089/ars.2023.0404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
Significance: Hydrogen sulfide (H2S) is a recently recognized gasotransmitter involved in physiological and pathological conditions in mammals. It protects organs from oxidative stress, inflammation, hypertension, and cell death. With abundant expression of H2S-production enzymes, the liver is closely linked to H2S signaling. Recent Advances: Hepatic H2S comes from various sources, including gut microbiota, exogenous sulfur salts, and endogenous production. Recent studies highlight the importance of hepatic H2S in liver diseases such as nonalcoholic fatty liver disease (NAFLD), liver injury, and cancer, particularly at advanced stages. Endogenous H2S production deficiency is associated with severe liver disease, while exogenous H2S donors protect against liver dysfunction. Critical Issues: However, the roles of H2S in NAFLD, liver injury, and liver cancer are still debated, and its effects depend on donor type, dosage, treatment duration, and cell type, suggesting a multifaceted role. This review aimed to critically evaluate H2S production, metabolism, mode of action, and roles in liver function and disease. Future Direction: Understanding H2S's precise roles and mechanisms in liver health will advance potential therapeutic applications in preclinical and clinical research. Targeting H2S-producing enzymes and exogenous H2S sources, alone or in combination with other drugs, could be explored. Quantifying endogenous H2S levels may aid in diagnosing and managing liver diseases. Antioxid. Redox Signal. 40, 122-144.
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Affiliation(s)
- Thuy T P Nguyen
- Department of Animal Science, College of Agriculture and Life Science, Chonnam National University, Gwangju, Republic of Korea
- Division of Radiation and Genome Stability, Department of Radiation Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts, USA
| | - Phuc L Nguyen
- Department of Animal Science, College of Agriculture and Life Science, Chonnam National University, Gwangju, Republic of Korea
| | - So-Hyun Park
- Aging and Metabolism Research Group, Korea Food Research Institute, Wanju-gun, Republic of Korea
| | - Chang Hwa Jung
- Aging and Metabolism Research Group, Korea Food Research Institute, Wanju-gun, Republic of Korea
| | - Tae-Il Jeon
- Department of Animal Science, College of Agriculture and Life Science, Chonnam National University, Gwangju, Republic of Korea
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17
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Burns CM, Miller RA, Endicott SJ. Histodenz Separation of Lysosomal Subpopulations for Analysis of Chaperone-mediated Autophagy. Curr Protoc 2024; 4:e950. [PMID: 38197533 PMCID: PMC10874119 DOI: 10.1002/cpz1.950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2024]
Abstract
Chaperone-mediated autophagy (CMA) is the most selective form of lysosomal proteolysis, in which proteins are individually selected for lysosomal degradation. CMA degradation targets bear a pentapeptide consensus motif that is recognized by the cytosolic chaperone HSPA8 (Hsc70), which participates in the trafficking of the target to the lysosomal surface. From there, it is translocated into the lysosomal lumen, independent of vesicle fusion, in a process dependent upon the lysosomal transmembrane protein LAMP2A. There are limited tools for studying CMA in whole cells and tissues, and many of the best techniques for studying CMA rely on the preparation of lysosome enriched fractions. Such experiments include (1) the in vitro evaluation of CMA substrate uptake activity, (2) the characterization of changes to lysosomal resident and CMA regulatory proteins, and (3) lysosomal targetomics, i.e., the use of quantitative proteomics to characterize lysosomal degradation targets. Previous studies using discontinuous metrizamide gradients have shown that a subpopulation of liver lysosomes is responsible for the majority of CMA activity ("CMA+ "). These CMA+ lysosomes are low density and have higher levels of MTORC2 relative to the "CMA- " lysosomes, which are high density and have higher levels of MTORC1. Because of safety concerns surrounding metrizamide, however, this compound is difficult to obtain, and it is impractically expensive. Here, we have provided protocols for isolation of lysosomal subpopulations for CMA-related analyses from mouse liver using Histodenz, a safe and affordable alternative to metrizamide. Supplementary protocols show how to perform CMA activity assays with appropriate statistical analysis, and how to analyze for lysosomal breakage/membrane integrity. © 2024 The Authors. Current Protocols published by Wiley Periodicals LLC. Basic Protocol: Isolation of lysosomal subpopulations from mouse liver using discontinuous Histodenz gradients Alternate Protocol: Isolation of lysosomes from cultured cells using discontinuous Histodenz gradients Support Protocol 1: Verifying enrichment of lysosomal markers in lysosome-enriched fractions Support Protocol 2: Measuring in vitro uptake of CMA substrates Support Protocol 3: Measuring lysosomal membrane integrity by hexosaminidase assay.
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Affiliation(s)
- Calvin M. Burns
- Department of Pathology, University of Michigan, Ann Arbor, MI
| | - Richard A. Miller
- Department of Pathology, University of Michigan, Ann Arbor, MI
- Geriatrics Center, University of Michigan, Ann Arbor, MI
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18
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Krause GJ, Kirchner P, Stiller B, Morozova K, Diaz A, Chen KH, Krogan NJ, Agullo-Pascual E, Clement CC, Lindenau K, Swaney DL, Dilipkumar S, Bravo-Cordero JJ, Santambrogio L, Cuervo AM. Molecular determinants of the crosstalk between endosomal microautophagy and chaperone-mediated autophagy. Cell Rep 2023; 42:113529. [PMID: 38060380 PMCID: PMC10807933 DOI: 10.1016/j.celrep.2023.113529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 09/12/2023] [Accepted: 11/17/2023] [Indexed: 12/30/2023] Open
Abstract
Chaperone-mediated autophagy (CMA) and endosomal microautophagy (eMI) are pathways for selective degradation of cytosolic proteins in lysosomes and late endosomes, respectively. These autophagic processes share as a first step the recognition of the same five-amino-acid motif in substrate proteins by the Hsc70 chaperone, raising the possibility of coordinated activity of both pathways. In this work, we show the existence of a compensatory relationship between CMA and eMI and identify a role for the chaperone protein Bag6 in triage and internalization of eMI substrates into late endosomes. Association and dynamics of Bag6 at the late endosome membrane change during starvation, a stressor that, contrary to other autophagic pathways, causes a decline in eMI activity. Collectively, these results show a coordinated function of eMI with CMA, identify the interchangeable subproteome degraded by these pathways, and start to elucidate the molecular mechanisms that facilitate the switch between them.
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Affiliation(s)
- Gregory J Krause
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Philipp Kirchner
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Barbara Stiller
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Kateryna Morozova
- Department of Radiation Oncology, Weill Cornell School of Medicine, New York, NY 10021, USA
| | - Antonio Diaz
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Kuei-Ho Chen
- Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA; The J. David Gladstone Institutes, San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA
| | - Nevan J Krogan
- Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA; The J. David Gladstone Institutes, San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA
| | | | - Cristina C Clement
- Department of Radiation Oncology, Weill Cornell School of Medicine, New York, NY 10021, USA
| | - Kristen Lindenau
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Danielle L Swaney
- Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA; The J. David Gladstone Institutes, San Francisco, CA 94158, USA; Quantitative Biosciences Institute (QBI), University of California, San Francisco, San Francisco, CA 94158, USA
| | - Shilpa Dilipkumar
- Microscopy CoRE, Dean's CoREs, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Jose Javier Bravo-Cordero
- Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Laura Santambrogio
- Department of Radiation Oncology, Weill Cornell School of Medicine, New York, NY 10021, USA.
| | - Ana Maria Cuervo
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY 10461, USA.
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19
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Bopape M, Tiloke C, Ntsapi C. Moringa oleifera and Autophagy: Evidence from In Vitro Studies on Chaperone-Mediated Autophagy in HepG 2 Cancer Cells. Nutr Cancer 2023; 75:1822-1847. [PMID: 37850743 DOI: 10.1080/01635581.2023.2270215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 08/23/2023] [Indexed: 10/19/2023]
Abstract
Hepatocellular carcinoma (HCC) is the most prevalent primary liver cancer in Sub-Saharan African countries, including South Africa (SA). Given the limitations in current HCC therapeutics, there is an increasing need for alternative adjuvant therapeutic options. As such, several cell survival mechanisms, such as autophagy, have been identified as potential adjuvant therapeutic targets in HCC treatment. Of the three most established autophagic pathways, the upregulation of chaperone-mediated autophagy (CMA) has been extensively described in various cancer cells, including HCC cells. CMA promotes tumor growth and chemotherapeutic drug resistance, thus contributing to HCC tumorigenesis. Therefore, the modulation of CMA serves as a promising adjuvant target for current HCC therapeutic strategies. Phytochemical extracts found in the medicinal plant, Moringa oleifera (MO), have been shown to induce apoptosis in numerous cancer cells, including HCC. MO leaves have the greatest abundance of phytochemicals displaying anticancer potential. However, the potential interaction between the pro-apoptotic effects of MO aqueous leaf extract and the survival-promoting role of CMA in an in vitro model of HCC remains unclear. This review aims to summarize the latest findings on the role of CMA, and MO in the progression of HCC.
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Affiliation(s)
- Matlola Bopape
- Department of Basic Medical Sciences, University of the Free State, Bloemfontein, South Africa
| | - Charlette Tiloke
- Department of Basic Medical Sciences, University of the Free State, Bloemfontein, South Africa
| | - Claudia Ntsapi
- Department of Basic Medical Sciences, University of the Free State, Bloemfontein, South Africa
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20
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Mastoridou EM, Goussia AC, Kanavaros P, Charchanti AV. Involvement of Lipophagy and Chaperone-Mediated Autophagy in the Pathogenesis of Non-Alcoholic Fatty Liver Disease by Regulation of Lipid Droplets. Int J Mol Sci 2023; 24:15891. [PMID: 37958873 PMCID: PMC10649352 DOI: 10.3390/ijms242115891] [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: 10/09/2023] [Revised: 10/30/2023] [Accepted: 10/30/2023] [Indexed: 11/15/2023] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is defined as the accumulation of lipids in the form of lipid droplets in more than 5% of hepatocytes. It is regarded as a range of diverse pathologies, including simple steatosis and steatohepatitis. The structural characteristics of lipid droplets, along with their protein composition, mainly including perilipins, have been implicated in the etiology of the disease. These proteins have garnered increasing attention as a pivotal regulator since their levels and distinct expression appear to be associated with the progression from simple steatosis to steatohepatitis. Perilipins are target proteins of chaperone-mediated autophagy, and their degradation is a prerequisite for lipolysis and lipophagy to access the lipid core. Both lipophagy and chaperone-mediated autophagy have significant implications on the development of the disease, as evidenced by their upregulation during the initial phases of simple steatosis and their subsequent downregulation once steatosis is established. On the contrary, during steatohepatitis, the process of chaperone-mediated autophagy is enhanced, although lipophagy remains suppressed. Evidently, the reduced levels of autophagic pathways observed in simple steatosis serve as a defensive mechanism against lipotoxicity. Conversely, in steatohepatitis, chaperone-mediated autophagy fails to compensate for the continuous generation of small lipid droplets and thus cannot protect hepatocytes from lipotoxicity.
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Affiliation(s)
- Eleftheria M. Mastoridou
- Department of Anatomy-Histology-Embryology, Faculty of Medicine, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece; (E.M.M.); (P.K.)
| | - Anna C. Goussia
- Department of Pathology, Faculty of Medicine, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece;
| | - Panagiotis Kanavaros
- Department of Anatomy-Histology-Embryology, Faculty of Medicine, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece; (E.M.M.); (P.K.)
| | - Antonia V. Charchanti
- Department of Anatomy-Histology-Embryology, Faculty of Medicine, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece; (E.M.M.); (P.K.)
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21
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Qiao L, Hu J, Qiu X, Wang C, Peng J, Zhang C, Zhang M, Lu H, Chen W. LAMP2A, LAMP2B and LAMP2C: similar structures, divergent roles. Autophagy 2023; 19:2837-2852. [PMID: 37469132 PMCID: PMC10549195 DOI: 10.1080/15548627.2023.2235196] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 06/29/2023] [Accepted: 07/06/2023] [Indexed: 07/21/2023] Open
Abstract
LAMP2 (lysosomal associated membrane protein 2) is one of the major protein components of the lysosomal membrane. There currently exist three LAMP2 isoforms, LAMP2A, LAMP2B and LAMP2C, and they vary in distribution and function. LAMP2A serves as a receptor and channel for transporting cytosolic proteins in a process called chaperone-mediated autophagy (CMA). LAMP2B is required for autophagosome-lysosome fusion in cardiomyocytes and is one of the components of exosome membranes. LAMP2C is primarily implicated in a novel type of autophagy in which nucleic acids are taken up into lysosomes for degradation. In this review, the current evidence for the function of each LAMP2 isoform in various pathophysiological processes and human diseases, as well as their possible mechanisms, are comprehensively summarized. We discuss the evolutionary patterns of the three isoforms in vertebrates and provide technical guidance on investigating these isoforms. We are also concerned with the newly arising questions in this particular research area that remain unanswered. Advances in the functions of the three LAMP2 isoforms will uncover new links between lysosomal dysfunction, autophagy and human diseases.Abbreviation: ACSL4: acyl-CoA synthetase long-chain family member 4; AD: Alzheimer disease; Ag: antigens; APP: amyloid beta precursor protein; ATG14: autophagy related 14; AVSF: autophagic vacuoles with unique sarcolemmal features; BBC3/PUMA: BCL2 binding component 3; CCD: C-terminal coiled coil domain; CMA: chaperone-mediated autophagy; CVDs: cardiovascular diseases; DDIT4/REDD1: DNA damage inducible transcript 4; ECs: endothelial cells; ER: endoplasmic reticulum; ESCs: embryonic stem cells; GAPDH: glyceraldehyde-3-phosphate dehydrogenase; GBA/β-glucocerebrosidase: glucosylceramidase beta; GSCs: glioblastoma stem cells; HCC: hepatocellular carcinoma; HD: Huntington disease; HSCs: hematopoietic stem cells; HSPA8/HSC70: heat shock protein family A (Hsp70) member 8; IL3: interleukin 3; IR: ischemia-reperfusion; LAMP2: lysosomal associated membrane protein 2; LDs: lipid droplets; LRRK2: leucine rich repeat kinase 2; MA: macroautophagy; MHC: major histocompatibility complex; MST1: macrophage stimulating 1; NAFLD: nonalcoholic fatty liver disease; NFE2L2/NRF2: NFE2 like bZIP transcription factor 2; NLRP3: NLR family pyrin domain containing 3; PARK7: Parkinsonism associated deglycase; PD: Parkinson disease; PEA15/PED: proliferation and apoptosis adaptor protein 15; PKM/PKM2: pyruvate kinase M1/2; RA: rheumatoid arthritis; RARA: retinoic acid receptor alpha; RCAN1: regulator of calcineurin 1; RCC: renal cell carcinoma; RDA: RNautophagy and DNautophagy; RNAi: RNA interference; RND3: Rho Family GTPase 3; SG-NOS3/eNOS: deleterious glutathionylated NOS3; SLE: systemic lupus erythematosus; TAMs: tumor-associated macrophages; TME: tumor microenvironment; UCHL1: ubiquitin C-terminal hydrolase L1; VAMP8: vesicle associated membrane protein 8.
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Affiliation(s)
- Lei Qiao
- National Key Laboratory for Innovation and Transformation of Luobing Theory; the Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences; Department of Cardiology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Jiayi Hu
- National Key Laboratory for Innovation and Transformation of Luobing Theory; the Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences; Department of Cardiology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Xiaohan Qiu
- National Key Laboratory for Innovation and Transformation of Luobing Theory; the Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences; Department of Cardiology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Chunlin Wang
- National Key Laboratory for Innovation and Transformation of Luobing Theory; the Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences; Department of Cardiology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Jieqiong Peng
- Department of Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Cheng Zhang
- National Key Laboratory for Innovation and Transformation of Luobing Theory; the Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences; Department of Cardiology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Meng Zhang
- National Key Laboratory for Innovation and Transformation of Luobing Theory; the Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences; Department of Cardiology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Huixia Lu
- National Key Laboratory for Innovation and Transformation of Luobing Theory; the Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences; Department of Cardiology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Wenqiang Chen
- National Key Laboratory for Innovation and Transformation of Luobing Theory; the Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences; Department of Cardiology, Qilu Hospital of Shandong University, Jinan, Shandong, China
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22
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Choi YJ, Yun SH, Yu J, Mun Y, Lee W, Park CJ, Han BW, Lee BH. Chaperone-mediated autophagy dysregulation during aging impairs hepatic fatty acid oxidation via accumulation of NCoR1. Mol Metab 2023; 76:101784. [PMID: 37524243 PMCID: PMC10448198 DOI: 10.1016/j.molmet.2023.101784] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 07/21/2023] [Accepted: 07/27/2023] [Indexed: 08/02/2023] Open
Abstract
OBJECTIVE Alterations in lipid metabolism are associated with aging and age-related diseases. Chaperone-mediated autophagy (CMA) is a lysosome-dependent process involved in specific protein degradation. Heat shock cognate 71 kDa protein (Hsc70) recognizes cytosolic proteins with KFERQ motif and allows them to enter the lysosome via lysosome-associated membrane glycoprotein 2 isoform A (LAMP2A). CMA deficiency is associated with dysregulated lipid metabolism in the liver. In this study, we examined the effect of CMA on lipid metabolism in the aged liver. METHODS 12-week-old and 88-week-old mice were employed to assess the effect of aging on hepatic CMA activity. We generated CMA-deficient mouse primary hepatocytes using siRNA for Lamp2a and liver-specific LAMP2A knockdown mice via adeno-associated viruses expressing short hairpin RNAs to investigate the influence of CMA on lipid metabolism. RESULTS We noted aging-induced progression toward fatty liver and a decrease in LAMP2A levels in total protein and lysosomes. The expression of genes associated with fatty acid oxidation was markedly downregulated in the aged liver, as verified in CMA-deficient mouse primary hepatocytes. In addition, the aged liver accumulated nuclear receptor corepressor 1 (NCoR1), a negative regulator of peroxisome proliferator-activated receptor α (PPARα). We found that Hsc70 binds to NCoR1 via the KFERQ motif. Lamp2a siRNA treatment accumulated NCoR1 and decreased the fatty acid oxidation rate. Pharmacological activation of CMA by AR7 treatment increased LAMP2A expression, leading to NCoR1 degradation. A liver-specific LAMP2A knockdown via adeno-associated viruses expressing short hairpin RNAs caused NCoR1 accumulation, inactivated PPARα, downregulated the expression of fatty acid oxidation-related genes and significantly increased liver triglyceride levels. CONCLUSIONS Our results elucidated a novel PPARα regulatory mechanism involving CMA-mediated NCoR1 degradation during aging. These findings demonstrate that CMA dysregulation is crucial for the progression of aging-related fatty liver diseases.
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Affiliation(s)
- You-Jin Choi
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Sung Ho Yun
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Jihyeon Yu
- Division of Life Science, Korea Polar Research Institute, Incheon 21990, Republic of Korea
| | - Yewon Mun
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Wonseok Lee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Cheon Jun Park
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Byung Woo Han
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Byung-Hoon Lee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 08826, Republic of Korea.
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23
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Yao R, Shen J. Chaperone-mediated autophagy: Molecular mechanisms, biological functions, and diseases. MedComm (Beijing) 2023; 4:e347. [PMID: 37655052 PMCID: PMC10466100 DOI: 10.1002/mco2.347] [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: 12/15/2022] [Revised: 07/23/2023] [Accepted: 07/27/2023] [Indexed: 09/02/2023] Open
Abstract
Chaperone-mediated autophagy (CMA) is a lysosomal degradation pathway that eliminates substrate proteins through heat-shock cognate protein 70 recognition and lysosome-associated membrane protein type 2A-assisted translocation. It is distinct from macroautophagy and microautophagy. In recent years, the regulatory mechanisms of CMA have been gradually enriched, including the newly discovered NRF2 and p38-TFEB signaling, as positive and negative regulatory pathways of CMA, respectively. Normal CMA activity is involved in the regulation of metabolism, aging, immunity, cell cycle, and other physiological processes, while CMA dysfunction may be involved in the occurrence of neurodegenerative disorders, tumors, intestinal disorders, atherosclerosis, and so on, which provides potential targets for the treatment and prediction of related diseases. This article describes the general process of CMA and its role in physiological activities and summarizes the connection between CMA and macroautophagy. In addition, human diseases that concern the dysfunction or protective role of CMA are discussed. Our review deepens the understanding of the mechanisms and physiological functions of CMA and provides a summary of past CMA research and a vision of future directions.
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Affiliation(s)
- Ruchen Yao
- Division of Gastroenterology and HepatologyKey Laboratory of Gastroenterology and HepatologyMinistry of Health, Inflammatory Bowel Disease Research CenterShanghaiChina
- Renji Hospital, School of MedicineShanghai Jiao Tong UniversityShanghaiChina
- Shanghai Institute of Digestive DiseaseShanghaiChina
| | - Jun Shen
- Division of Gastroenterology and HepatologyKey Laboratory of Gastroenterology and HepatologyMinistry of Health, Inflammatory Bowel Disease Research CenterShanghaiChina
- Renji Hospital, School of MedicineShanghai Jiao Tong UniversityShanghaiChina
- Shanghai Institute of Digestive DiseaseShanghaiChina
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24
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Sharma R, Diwan B. Lipids and the hallmarks of ageing: From pathology to interventions. Mech Ageing Dev 2023; 215:111858. [PMID: 37652278 DOI: 10.1016/j.mad.2023.111858] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 08/21/2023] [Accepted: 08/28/2023] [Indexed: 09/02/2023]
Abstract
Lipids are critical structural and functional architects of cellular homeostasis. Change in systemic lipid profile is a clinical indicator of underlying metabolic pathologies, and emerging evidence is now defining novel roles of lipids in modulating organismal ageing. Characteristic alterations in lipid metabolism correlate with age, and impaired systemic lipid profile can also accelerate the development of ageing phenotype. The present work provides a comprehensive review of the extent of lipids as regulators of the modern hallmarks of ageing viz., cellular senescence, chronic inflammation, gut dysbiosis, telomere attrition, genome instability, proteostasis and autophagy, epigenetic alterations, and stem cells dysfunctions. Current evidence on the modulation of each of these hallmarks has been discussed with emphasis on inherent age-dependent deficiencies in lipid metabolism as well as exogenous lipid changes. There appears to be sufficient evidence to consider impaired lipid metabolism as key driver of the ageing process although much of knowledge is yet fragmented. Considering dietary lipids, the type and quantity of lipids in the diet is a significant, but often overlooked determinant that governs the effects of lipids on ageing. Further research using integrative approaches amidst the known aging hallmarks is highly desirable for understanding the therapeutics of lipids associated with ageing.
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Affiliation(s)
- Rohit Sharma
- Nutrigerontology Laboratory, Faculty of Applied Sciences & Biotechnology, Shoolini University, Solan 173229, India.
| | - Bhawna Diwan
- Nutrigerontology Laboratory, Faculty of Applied Sciences & Biotechnology, Shoolini University, Solan 173229, India
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25
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Watanabe Y, Taguchi K, Tanaka M. Roles of Stress Response in Autophagy Processes and Aging-Related Diseases. Int J Mol Sci 2023; 24:13804. [PMID: 37762105 PMCID: PMC10531041 DOI: 10.3390/ijms241813804] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 09/02/2023] [Accepted: 09/04/2023] [Indexed: 09/29/2023] Open
Abstract
The heat shock factor 1 (HSF1)-mediated stress response pathway and autophagy processes play important roles in the maintenance of proteostasis. Autophagy processes are subdivided into three subtypes: macroautophagy, chaperone-mediated autophagy (CMA), and microautophagy. Recently, molecular chaperones and co-factors were shown to be involved in the selective degradation of substrates by these three autophagy processes. This evidence suggests that autophagy processes are regulated in a coordinated manner by the HSF1-mediated stress response pathway. Recently, various studies have demonstrated that proteostasis pathways including HSF1 and autophagy are implicated in longevity. Furthermore, they serve as therapeutic targets for aging-related diseases such as cancer and neurodegenerative diseases. In the future, these studies will underpin the development of therapies against various diseases.
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Affiliation(s)
- Yoshihisa Watanabe
- Department of Basic Geriatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamikyo-ku, Kyoto 602-8566, Japan
| | - Katsutoshi Taguchi
- Department of Anatomy and Neurobiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 601-0841, Japan; (K.T.); (M.T.)
| | - Masaki Tanaka
- Department of Anatomy and Neurobiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 601-0841, Japan; (K.T.); (M.T.)
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26
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Zhang KK, Burns CM, Skinner ME, Lombard DB, Miller RA, Endicott SJ. PTEN is both an activator and a substrate of chaperone-mediated autophagy. J Cell Biol 2023; 222:e202208150. [PMID: 37418003 PMCID: PMC10327811 DOI: 10.1083/jcb.202208150] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 04/17/2023] [Accepted: 05/26/2023] [Indexed: 07/08/2023] Open
Abstract
PTEN is a crucial negative regulator of the INS/PI3K/AKT pathway and is one of the most commonly mutated tumor suppressors in cancer. Global overexpression (OE) of PTEN in mice shifts metabolism to favor oxidative phosphorylation over glycolysis, reduces fat mass, and extends the lifespan of both sexes. We demonstrate that PTEN regulates chaperone-mediated autophagy (CMA). Using cultured cells and mouse models, we show that PTEN OE enhances CMA, dependent upon PTEN's lipid phosphatase activity and AKT inactivation. Reciprocally, PTEN knockdown reduces CMA, which can be rescued by inhibiting class I PI3K or AKT. Both PTEN and CMA are negative regulators of glycolysis and lipid droplet formation. We show that suppression of glycolysis and lipid droplet formation downstream of PTEN OE depends on CMA activity. Finally, we show that PTEN protein levels are sensitive to CMA and that PTEN accumulates in lysosomes with elevated CMA. Collectively, these data suggest that CMA is both an effector and a regulator of PTEN.
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Affiliation(s)
- Katherine K. Zhang
- College of Literature, Arts, and the Sciences, University of Michigan, Ann Arbor, Ann Arbor, MI, USA
| | - Calvin M. Burns
- Department of Pathology, University of Michigan, Ann Arbor, Ann Arbor, MI, USA
| | - Mary E. Skinner
- Department of Neurology, University of Michigan, Ann Arbor, Ann Arbor, MI, USA
| | - David B. Lombard
- Department of Pathology and Laboratory Medicine, and Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Richard A. Miller
- Department of Pathology, University of Michigan, Ann Arbor, Ann Arbor, MI, USA
- Geriatrics Center, University of Michigan, Ann Arbor, Ann Arbor, MI, USA
| | - S. Joseph Endicott
- Department of Pathology, University of Michigan, Ann Arbor, Ann Arbor, MI, USA
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Binder MJ, Pedley AM. The roles of molecular chaperones in regulating cell metabolism. FEBS Lett 2023; 597:1681-1701. [PMID: 37287189 PMCID: PMC10984649 DOI: 10.1002/1873-3468.14682] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 05/22/2023] [Accepted: 05/29/2023] [Indexed: 06/09/2023]
Abstract
Fluctuations in nutrient and biomass availability, often as a result of disease, impart metabolic challenges that must be overcome in order to sustain cell survival and promote proliferation. Cells adapt to these environmental changes and stresses by adjusting their metabolic networks through a series of regulatory mechanisms. Our understanding of these rewiring events has largely been focused on those genetic transformations that alter protein expression and the biochemical mechanisms that change protein behavior, such as post-translational modifications and metabolite-based allosteric modulators. Mounting evidence suggests that a class of proteome surveillance proteins called molecular chaperones also can influence metabolic processes. Here, we summarize several ways the Hsp90 and Hsp70 chaperone families act on human metabolic enzymes and their supramolecular assemblies to change enzymatic activities and metabolite flux. We further highlight how these chaperones can assist in the translocation and degradation of metabolic enzymes. Collectively, these studies provide a new view for how metabolic processes are regulated to meet cellular demand and inspire new avenues for therapeutic intervention.
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Maragkakis M, Malla S, Hatzoglou M, Trifunovic A, Glick AB, Finkel T, Longo VD, Kaushik S, Muñoz-Cánoves P, Lithgow GJ, Naidoo N, Booth LN, Payea MJ, Herman AB, de Cabo R, Wilson DM, Ferrucci L, Gorospe M. Biology of Stress Responses in Aging. AGING BIOLOGY 2023; 1:20230002. [PMID: 38500537 PMCID: PMC10947073 DOI: 10.59368/agingbio.20230001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
On April 28th, 2022, a group of scientific leaders gathered virtually to discuss molecular and cellular mechanisms of responses to stress. Conditions of acute, high-intensity stress are well documented to induce a series of adaptive responses that aim to promote survival until the stress has dissipated and then guide recovery. However, high-intensity or persistent stress that goes beyond the cell's compensatory capacity are countered with resilience strategies that are not completely understood. These adaptative strategies, which are an essential component of the study of aging biology, were the theme of the meeting. Specific topics discussed included mechanisms of proteostasis, such as the unfolded protein response (UPR) and the integrated stress response (ISR), as well as mitochondrial stress and lysosomal stress responses. Attention was also given to regulatory mechanisms and associated biological processes linked to age-related conditions, such as muscle loss and regeneration, cancer, senescence, sleep quality, and degenerative disease, with a general focus on the relevance of stress responses to frailty. We summarize the concepts and potential future directions that emerged from the discussion and highlight their relevance to the study of aging and age-related chronic diseases.
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Affiliation(s)
- Manolis Maragkakis
- National Institute on Aging Intramural Research Program, National Institutes of Health, Baltimore, Maryland, USA
- Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium
| | - Sulochan Malla
- National Institute on Aging Intramural Research Program, National Institutes of Health, Baltimore, Maryland, USA
- Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium
| | - Maria Hatzoglou
- National Institute on Aging Intramural Research Program, National Institutes of Health, Baltimore, Maryland, USA
- Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium
| | - Aleksandra Trifunovic
- National Institute on Aging Intramural Research Program, National Institutes of Health, Baltimore, Maryland, USA
- Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium
| | - Adam B Glick
- National Institute on Aging Intramural Research Program, National Institutes of Health, Baltimore, Maryland, USA
- Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium
| | - Toren Finkel
- National Institute on Aging Intramural Research Program, National Institutes of Health, Baltimore, Maryland, USA
- Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium
| | - Valter D Longo
- National Institute on Aging Intramural Research Program, National Institutes of Health, Baltimore, Maryland, USA
- Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium
| | - Susmita Kaushik
- National Institute on Aging Intramural Research Program, National Institutes of Health, Baltimore, Maryland, USA
- Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium
| | - Pura Muñoz-Cánoves
- National Institute on Aging Intramural Research Program, National Institutes of Health, Baltimore, Maryland, USA
- Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium
| | - Gordon J Lithgow
- National Institute on Aging Intramural Research Program, National Institutes of Health, Baltimore, Maryland, USA
- Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium
| | - Nirinjini Naidoo
- National Institute on Aging Intramural Research Program, National Institutes of Health, Baltimore, Maryland, USA
- Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium
| | - Lauren N Booth
- National Institute on Aging Intramural Research Program, National Institutes of Health, Baltimore, Maryland, USA
- Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium
| | - Matthew J Payea
- National Institute on Aging Intramural Research Program, National Institutes of Health, Baltimore, Maryland, USA
- Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium
| | - Allison B Herman
- National Institute on Aging Intramural Research Program, National Institutes of Health, Baltimore, Maryland, USA
- Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium
| | - Rafael de Cabo
- National Institute on Aging Intramural Research Program, National Institutes of Health, Baltimore, Maryland, USA
- Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium
| | - David M Wilson
- National Institute on Aging Intramural Research Program, National Institutes of Health, Baltimore, Maryland, USA
- Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium
| | - Luigi Ferrucci
- National Institute on Aging Intramural Research Program, National Institutes of Health, Baltimore, Maryland, USA
- Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium
| | - Myriam Gorospe
- National Institute on Aging Intramural Research Program, National Institutes of Health, Baltimore, Maryland, USA
- Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium
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Zhang KK, Zhang P, Kodur A, Erturk I, Burns CM, Kenyon C, Miller RA, Endicott SJ. LAMP2A, and other chaperone-mediated autophagy related proteins, do not decline with age in genetically heterogeneous UM-HET3 mice. Aging (Albany NY) 2023; 15:204796. [PMID: 37315291 DOI: 10.18632/aging.204796] [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: 04/21/2023] [Accepted: 05/30/2023] [Indexed: 06/16/2023]
Abstract
Chaperone-mediated autophagy (CMA) selectively degrades proteins that are crucial for glycolysis, fatty acid metabolism, and the progression of several age-associated diseases. Several previous studies, each of which evaluated males of a single inbred mouse or rat strain, have reported that CMA declines with age in many tissues, attributed to an age-related loss of LAMP2A, the primary and indispensable component of the CMA translocation complex. This has led to a paradigm in the field of CMA research, stating that the age-associated decline in LAMP2A in turn decreases CMA, contributing to the pathogenesis of late-life disease. We assessed LAMP2A levels and CMA substrate uptake in both sexes of the genetically heterogeneous UM-HET3 mouse stock, which is the current global standard for the evaluation of anti-aging interventions. We found no evidence for age-related changes in LAMP2A levels, CMA substrate uptake, or whole liver levels of CMA degradation targets, despite identifying sex differences in CMA.
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Affiliation(s)
- Katherine K Zhang
- University of Michigan, College of Literature, Science, and The Arts, Ann Arbor, MI 48109, USA
| | - Peichuan Zhang
- Calico Life Sciences, South San Francisco, CA 94080, USA
- Current Affiliation: WuXi AppTec, Shanghai, China
| | - Anagha Kodur
- University of Michigan, College of Literature, Science, and The Arts, Ann Arbor, MI 48109, USA
| | - Ilkim Erturk
- University of Michigan, Department of Pathology, Ann Arbor, MI 48109, USA
| | - Calvin M Burns
- University of Michigan, Department of Pathology, Ann Arbor, MI 48109, USA
| | - Cynthia Kenyon
- Calico Life Sciences, South San Francisco, CA 94080, USA
| | - Richard A Miller
- University of Michigan, Department of Pathology, Ann Arbor, MI 48109, USA
- University of Michigan Geriatrics Center, Ann Arbor, MI 48109, USA
| | - S Joseph Endicott
- University of Michigan, Department of Pathology, Ann Arbor, MI 48109, USA
- University of Michigan Geriatrics Center, Ann Arbor, MI 48109, USA
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Wang L, O'Kane AM, Zhang Y, Ren J. Maternal obesity and offspring health: Adapting metabolic changes through autophagy and mitophagy. Obes Rev 2023:e13567. [PMID: 37055041 DOI: 10.1111/obr.13567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 08/08/2022] [Accepted: 03/25/2023] [Indexed: 04/15/2023]
Abstract
Maternal obesity leads to obstetric complications and a high prevalence of metabolic anomalies in the offspring. Among various contributing factors for maternal obesity-evoked health sequelae, developmental programming is considered as one of the leading culprit factors for maternal obesity-associated chronic comorbidities. Although a unified theory is still lacking to systematically address multiple unfavorable postnatal health sequelae, a cadre of etiological machineries have been put forward, including lipotoxicity, inflammation, oxidative stress, autophagy/mitophagy defect, and cell death. Hereinto, autophagy and mitophagy play an essential housekeeping role in the clearance of long-lived, damaged, and unnecessary cell components to maintain and restore cellular homeostasis. Defective autophagy/mitophagy has been reported in maternal obesity and negatively impacts fetal development and postnatal health. This review will provide an update on metabolic disorders in fetal development and postnatal health issues evoked by maternal obesity and/or intrauterine overnutrition and discuss the possible contribution of autophagy/mitophagy in metabolic diseases. Moreover, relevant mechanisms and potential therapeutic strategies will be discussed in an effort to target autophagy/mitophagy and metabolic disturbances in maternal obesity.
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Affiliation(s)
- Litao Wang
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
- National Clinical Research Center for Interventional Medicine, Shanghai, 200032, China
| | - Aislinn M O'Kane
- Department of Clinical Pharmacology, Indiana University School of Medicine, Indianapolis, Indiana, 46202, USA
| | - Yingmei Zhang
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
- National Clinical Research Center for Interventional Medicine, Shanghai, 200032, China
| | - Jun Ren
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
- National Clinical Research Center for Interventional Medicine, Shanghai, 200032, China
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31
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Autophagy, a relevant process for metabolic health and type-2 diabetes. NUTR HOSP 2023; 40:457-464. [PMID: 36927007 DOI: 10.20960/nh.04555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023] Open
Abstract
Autophagy is a very active process that plays an important role in cell and organ differentiation and remodelling, being a crucial system to guarantee health. This physiological process is activated in starvation and inhibited in the presence of nutrients. This short review comments on the three types of autophagy: macroautophagy, microautophagy, and chaperone-mediated autophagy, as well as different aspects that control autophagy and its relationship with health and degenerative diseases. As autophagy is highly dependent on functional autophagy (ATG) proteins integrating the phagophore, the role of some key ATG genes and epigenes are briefly commented on. The manuscript deepens discussing some central aspects of type-2 diabetes mellitus and their relationship with the cell cleaning process and mitochondria homeostasis maintenance, as well as the mechanisms through which antidiabetic drugs affect autophagy. Well-designed studies are needed to elucidate whether autophagy plays a casual or causal role in T2DM.
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A Perspective on the Link between Mitochondria-Associated Membranes (MAMs) and Lipid Droplets Metabolism in Neurodegenerative Diseases. BIOLOGY 2023; 12:biology12030414. [PMID: 36979106 PMCID: PMC10045954 DOI: 10.3390/biology12030414] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/03/2023] [Accepted: 03/06/2023] [Indexed: 03/11/2023]
Abstract
Mitochondria interact with the endoplasmic reticulum (ER) through contacts called mitochondria-associated membranes (MAMs), which control several processes, such as the ER stress response, mitochondrial and ER dynamics, inflammation, apoptosis, and autophagy. MAMs represent an important platform for transport of non-vesicular phospholipids and cholesterol. Therefore, this region is highly enriched in proteins involved in lipid metabolism, including the enzymes that catalyze esterification of cholesterol into cholesteryl esters (CE) and synthesis of triacylglycerols (TAG) from fatty acids (FAs), which are then stored in lipid droplets (LDs). LDs, through contact with other organelles, prevent the toxic consequences of accumulation of unesterified (free) lipids, including lipotoxicity and oxidative stress, and serve as lipid reservoirs that can be used under multiple metabolic and physiological conditions. The LDs break down by autophagy releases of stored lipids for energy production and synthesis of membrane components and other macromolecules. Pathological lipid deposition and autophagy disruption have both been reported to occur in several neurodegenerative diseases, supporting that lipid metabolism alterations are major players in neurodegeneration. In this review, we discuss the current understanding of MAMs structure and function, focusing on their roles in lipid metabolism and the importance of autophagy in LDs metabolism, as well as the changes that occur in neurogenerative diseases.
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Nikesitch N, Beraldi E, Zhang F, Adomat H, Bell R, Suzuki K, Fazli L, Hy Kung S, Wells C, Pinette N, Saxena N, Wang Y, Gleave M. Chaperone-mediated autophagy promotes PCa survival during ARPI through selective proteome remodeling. Oncogene 2023; 42:748-758. [PMID: 36611121 DOI: 10.1038/s41388-022-02573-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 12/05/2022] [Accepted: 12/07/2022] [Indexed: 01/09/2023]
Abstract
The androgen receptor (AR) plays an important role in PCa metabolism, with androgen receptor pathway inhibition (ARPI) subjecting PCa cells to acute metabolic stress caused by reduced biosynthesis and energy production. Defining acute stress response mechanisms that alleviate ARPI stress and therefore mediate prostate cancer (PCa) treatment resistance will help improve therapeutic outcomes of patients treated with ARPI. We identified the up-regulation of chaperone-mediated autophagy (CMA) in response to acute ARPI stress, which persisted in castration-resistant PCa (CRPC); previously undefined in PCa. CMA is a selective protein degradation pathway and a key stress response mechanism up-regulated under several stress stimuli, including metabolic stress. Through selective protein degradation, CMA orchestrates the cellular stress response by regulating cellular pathways through selective proteome remodeling. Through broad-spectrum proteomic analysis, CMA coordinates metabolic reprogramming of PCa cells to sustain PCa growth and survival during ARPI; through the upregulation of mTORC1 signaling and pathways associated with PCa biosynthesis and energetics. This not only promoted PCa growth during ARPI, but also promoted the emergence of CRPC in-vivo. During CMA inhibition, PCa metabolism is compromised, leading to ATP depletion, resulting in a profound anti-proliferative effect on PCa cells, and is enhanced when combined with ARPI. Furthermore, CMA inhibition prevented in-vivo tumour formation, and also re-sensitized enzalutamide-resistant cell lines in-vitro. The profound anti-proliferative effect of CMA inhibition was attributed to cell cycle arrest mediated through p53 transcriptional repression of E2F target genes. In summary, CMA is an acute ARPI stress response mechanism, essential in alleviating ARPI induced metabolic stress, essential for ensuring PCa growth and survival. CMA plays a critical role in the development of ARPI resistance in PCa.
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Affiliation(s)
- Nicholas Nikesitch
- Vancouver Prostate Centre, University of British Columbia, Vancouver, BC, Canada
- Department of Urologic Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Eliana Beraldi
- Vancouver Prostate Centre, University of British Columbia, Vancouver, BC, Canada
- Department of Urologic Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Fan Zhang
- Vancouver Prostate Centre, University of British Columbia, Vancouver, BC, Canada
- Department of Urologic Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Hans Adomat
- Vancouver Prostate Centre, University of British Columbia, Vancouver, BC, Canada
| | - Robert Bell
- Vancouver Prostate Centre, University of British Columbia, Vancouver, BC, Canada
- Department of Urologic Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Kotaro Suzuki
- Vancouver Prostate Centre, University of British Columbia, Vancouver, BC, Canada
- Department of Urologic Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Ladan Fazli
- Vancouver Prostate Centre, University of British Columbia, Vancouver, BC, Canada
- Department of Urologic Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Sonia Hy Kung
- Vancouver Prostate Centre, University of British Columbia, Vancouver, BC, Canada
| | - Christopher Wells
- Vancouver Prostate Centre, University of British Columbia, Vancouver, BC, Canada
| | - Nicholas Pinette
- Vancouver Prostate Centre, University of British Columbia, Vancouver, BC, Canada
- Department of Urologic Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Neetu Saxena
- Vancouver Prostate Centre, University of British Columbia, Vancouver, BC, Canada
- Department of Urologic Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Yuzhuo Wang
- Vancouver Prostate Centre, University of British Columbia, Vancouver, BC, Canada
- Department of Urologic Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Martin Gleave
- Vancouver Prostate Centre, University of British Columbia, Vancouver, BC, Canada.
- Department of Urologic Sciences, University of British Columbia, Vancouver, BC, Canada.
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Pathogenic Aspects and Therapeutic Avenues of Autophagy in Parkinson's Disease. Cells 2023; 12:cells12040621. [PMID: 36831288 PMCID: PMC9954720 DOI: 10.3390/cells12040621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 02/07/2023] [Accepted: 02/11/2023] [Indexed: 02/17/2023] Open
Abstract
The progressive aging of the population and the fact that Parkinson's disease currently does not have any curative treatment turn out to be essential issues in the following years, where research has to play a critical role in developing therapy. Understanding this neurodegenerative disorder keeps advancing, proving the discovery of new pathogenesis-related genes through genome-wide association analysis. Furthermore, the understanding of its close link with the disruption of autophagy mechanisms in the last few years permits the elaboration of new animal models mimicking, through multiple pathways, different aspects of autophagic dysregulation, with the presence of pathological hallmarks, in brain regions affected by Parkinson's disease. The synergic advances in these fields permit the elaboration of multiple therapeutic strategies for restoring autophagy activity. This review discusses the features of Parkinson's disease, the autophagy mechanisms and their involvement in pathogenesis, and the current methods to correct this cellular pathway, from the development of animal models to the potentially curative treatments in the preclinical and clinical phase studies, which are the hope for patients who do not currently have any curative treatment.
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Qian H, Chao X, Wang S, Li Y, Jiang X, Sun Z, Rülicke T, Zatloukal K, Ni HM, Ding WX. Loss of SQSTM1/p62 Induces Obesity and Exacerbates Alcohol-Induced Liver Injury in Aged Mice. Cell Mol Gastroenterol Hepatol 2023; 15:1027-1049. [PMID: 36754207 PMCID: PMC10036741 DOI: 10.1016/j.jcmgh.2023.01.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 01/31/2023] [Accepted: 01/31/2023] [Indexed: 02/10/2023]
Abstract
BACKGROUND Alcohol-associated liver disease (ALD) is a worldwide health problem, of which the effective treatment is still lacking. Both detrimental and protective roles of adipose tissue have been implicated in ALD. Although alcohol increases adipose tissue lipolysis to promote alcohol-induced liver injury, alcohol also activates brown adipose tissue (BAT) thermogenesis as an adaptive response in protecting against alcohol-induced liver injury. Moreover, aging and obesity are also risk factors for ALD. In the present study, we investigated the effects of autophagy receptor protein SQSTM1/p62 on adipose tissue and obesity in alcohol-induced liver injury in both young and aged mice. METHODS Young and aged whole-body SQSTM1/p62 knockout (KO) and their age-matched wild-type (WT) mice were subjected to chronic plus binge (Gao-binge) alcohol feeding. Blood, adipose and liver tissues were collected for biochemical and histologic analysis. RESULTS Aged but not young SQSTM1/p62 KO mice had significantly increased body weight and fat mass compared with the matched WT mice. Gao-binge alcohol feeding induced white adipose atrophy and decreased levels of SQSTM1/p62 levels in adipose tissue in aged WT mice. SQSTM1/p62 KO aged mice were resistant to Gao-binge alcohol-induced white adipose atrophy. Alcohol feeding increased the expression of thermogenic genes in WT mouse BAT, which was significantly blunted in SQSTM1/p62 KO aged mice. Alcohol-fed aged SQSTM1/p62 KO mice showed significantly higher levels of serum alanine aminotransferase, hepatic triglyceride, and inflammation compared with young and aged WT mice fed with alcohol. Alcohol-fed SQSTM1/p62 KO mice also increased secretion of proinflammatory and angiogenic adipokines that may promote alcohol-induced liver injury. CONCLUSIONS Loss of SQSTM1/p62 in aged mice leads to obesity and impairs alcohol-induced BAT adaptation, resulting in exacerbated alcohol-induced liver injury in mice.
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Affiliation(s)
- Hui Qian
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas
| | - Xiaojuan Chao
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas
| | - Shaogui Wang
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas
| | - Yuan Li
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas
| | - Xiaoxiao Jiang
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas
| | - Zhaoli Sun
- Department of Surgery, Johns Hopkins School of Medicine, Baltimore, Maryland
| | - Thomas Rülicke
- Department of Biomedical Sciences, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Kurt Zatloukal
- Institute of Pathology, Medical University of Graz, Graz, Austria
| | - Hong-Min Ni
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas
| | - Wen-Xing Ding
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas; Department of Internal Medicine, University of Kansas Medical Center, Kansas City, Kansas.
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36
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Desideri E, Castelli S, Dorard C, Toifl S, Grazi GL, Ciriolo MR, Baccarini M. Impaired degradation of YAP1 and IL6ST by chaperone-mediated autophagy promotes proliferation and migration of normal and hepatocellular carcinoma cells. Autophagy 2023; 19:152-162. [PMID: 35435804 PMCID: PMC9809932 DOI: 10.1080/15548627.2022.2063004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 04/02/2022] [Accepted: 04/04/2022] [Indexed: 01/07/2023] Open
Abstract
Impaired degradation of the transcriptional coactivator YAP1 and IL6ST (interleukin 6 cytokine family signal transducer), two proteins deregulated in liver cancer, has been shown to promote tumor growth. Here, we demonstrate that YAP1 and IL6ST are novel substrates of chaperone-mediated autophagy (CMA) in human hepatocellular carcinoma (HCC) and hepatocyte cell lines. Knockdown of the lysosomal CMA receptor LAMP2A increases protein levels of YAP1 and IL6ST, without changes in mRNA expression. Additionally, both proteins show KFERQ-dependent binding to the CMA chaperone HSPA8 and accumulate into isolated lysosomes after stimulation of CMA by prolonged starvation. We further show that LAMP2A downregulation promotes the proliferation and migration in HCC cells and a human hepatocyte cell line, and that it does so in a YAP1- and IL6ST-dependent manner. Finally, LAMP2A expression is downregulated, and YAP1 and IL6ST expression is upregulated, in human HCC biopsies. Taken together, our work reveals a novel mechanism that controls the turnover of two cancer-relevant proteins and suggests a tumor suppressor function of CMA in the liver, advocating for the exploitation of CMA activity for diagnostic and therapeutic purposes.Abbreviations: ACTB: actin beta; ATG5: autophagy related 5; ATG7: autophagy related 7; CMA: chaperone-mediated autophagy; eMI: endosomal microautophagy; HCC: hepatocellular carcinoma; HSPA8: heat shock protein family A (Hsp70) member 8; IL6ST: interleukin 6 cytokine family signal transducer; JAK: Janus kinase; LAMP1: lysosomal associated membrane protein 1; LAMP2A: lysosomal associated membrane protein 2A; MAPK8: mitogen-activated protein kinase 8; P6: pyridine 6; SQSTM1: sequestosome 1; TUBA: tubulin alpha; VDAC1: voltage dependent anion channel 1; VP: verteporfin; YAP1: Yes1 associated transcriptional regulator.
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Affiliation(s)
- Enrico Desideri
- Department of Biology, University of Rome “Tor Vergata”, Rome, Italy
- Department of Microbiology, Immunology and Genetics; Center of Molecular Biology, University of Vienna; Max Perutz Labs, Vienna, Austria
| | - Serena Castelli
- Department of Biology, University of Rome “Tor Vergata”, Rome, Italy
| | - Coralie Dorard
- Department of Microbiology, Immunology and Genetics; Center of Molecular Biology, University of Vienna; Max Perutz Labs, Vienna, Austria
| | - Stefanie Toifl
- Department of Microbiology, Immunology and Genetics; Center of Molecular Biology, University of Vienna; Max Perutz Labs, Vienna, Austria
| | - Gian Luca Grazi
- Surgery Unit, Department of Clinical and Experimental Oncology, IRCCS - Regina Elena National Cancer InstituteHepato-Pancreato-Biliary, Rome, Italy
| | - Maria Rosa Ciriolo
- Department of Biology, University of Rome “Tor Vergata”, Rome, Italy
- IRCCS San Raffaele Pisana, Rome, Italy
| | - Manuela Baccarini
- Department of Microbiology, Immunology and Genetics; Center of Molecular Biology, University of Vienna; Max Perutz Labs, Vienna, Austria
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37
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Li X, Zhu X, Wei Y. Autophagy in Atherosclerotic Plaque Cells: Targeting NLRP3 Inflammasome for Self-Rescue. Biomolecules 2022; 13:15. [PMID: 36671400 PMCID: PMC9855815 DOI: 10.3390/biom13010015] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 12/15/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022] Open
Abstract
Atherosclerosis (AS) is a lipid-driven disorder of the artery intima characterized by the equilibrium between inflammatory and regressive processes. A protein complex called NLRP3 inflammasome is involved in the release of mature interleukin-1β (IL-1β), which is connected to the initiation and progression of atherosclerosis. Autophagy, which includes macroautophagy, chaperone-mediated autophagy (CMA), and microautophagy, is generally recognized as the process by which cells transfer their constituents to lysosomes for digestion. Recent studies have suggested a connection between vascular inflammation and autophagy. This review summarizes the most recent studies and the underlying mechanisms associated with different autophagic pathways and NLRP3 inflammasomes in vascular inflammation, aiming to provide additional evidence for atherosclerosis research.
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Affiliation(s)
- Xuelian Li
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Xianjie Zhu
- Department of Orthopaedic Surgery, Qingdao Municipal Hospital, Qingdao 266011, China
| | - Yumiao Wei
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
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Kaushik S, Juste YR, Lindenau K, Dong S, Macho-González A, Santiago-Fernández O, McCabe M, Singh R, Gavathiotis E, Cuervo AM. Chaperone-mediated autophagy regulates adipocyte differentiation. SCIENCE ADVANCES 2022; 8:eabq2733. [PMID: 36383673 PMCID: PMC9668314 DOI: 10.1126/sciadv.abq2733] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 09/28/2022] [Indexed: 06/16/2023]
Abstract
Adipogenesis is a tightly orchestrated multistep process wherein preadipocytes differentiate into adipocytes. The most studied aspect of adipogenesis is its transcriptional regulation through timely expression and silencing of a vast number of genes. However, whether turnover of key regulatory proteins per se controls adipogenesis remains largely understudied. Chaperone-mediated autophagy (CMA) is a selective form of lysosomal protein degradation that, in response to diverse cues, remodels the proteome for regulatory purposes. We report here the activation of CMA during adipocyte differentiation and show that CMA regulates adipogenesis at different steps through timely degradation of key regulatory signaling proteins and transcription factors that dictate proliferation, energetic adaptation, and signaling changes required for adipogenesis.
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Affiliation(s)
- Susmita Kaushik
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY, USA
- Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Yves R. Juste
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY, USA
- Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Kristen Lindenau
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY, USA
- Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Shuxian Dong
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY, USA
- Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Adrián Macho-González
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY, USA
- Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Olaya Santiago-Fernández
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY, USA
- Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Mericka McCabe
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY, USA
- Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY, USA
- Department of Biochemistry, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Rajat Singh
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY, USA
- Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY, USA
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Evripidis Gavathiotis
- Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY, USA
- Department of Biochemistry, Albert Einstein College of Medicine, Bronx, NY, USA
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Ana Maria Cuervo
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY, USA
- Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY, USA
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY, USA
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Claude-Taupin A, Dupont N, Codogno P. Autophagy and the primary cilium in cell metabolism: What’s upstream? Front Cell Dev Biol 2022; 10:1046248. [PMID: 36438551 PMCID: PMC9682156 DOI: 10.3389/fcell.2022.1046248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 10/25/2022] [Indexed: 11/11/2022] Open
Abstract
The maintenance of cellular homeostasis in response to extracellular stimuli, i.e., nutrient and hormone signaling, hypoxia, or mechanical forces by autophagy, is vital for the health of various tissues. The primary cilium (PC) is a microtubule-based sensory organelle that regulates the integration of several extracellular stimuli. Over the past decade, an interconnection between autophagy and PC has begun to be revealed. Indeed, the PC regulates autophagy and in turn, a selective form of autophagy called ciliophagy contributes to the regulation of ciliogenesis. Moreover, the PC regulates both mitochondrial biogenesis and lipophagy to produce free fatty acids. These two pathways converge to activate oxidative phosphorylation and produce ATP, which is mandatory for cell metabolism and membrane transport. The autophagy-dependent production of energy is fully efficient when the PC senses shear stress induced by fluid flow. In this review, we discuss the cross-talk between autophagy, the PC and physical forces in the regulation of cell biology and physiology.
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Affiliation(s)
| | - Nicolas Dupont
- *Correspondence: Aurore Claude-Taupin, ; Nicolas Dupont, ; Patrice Codogno,
| | - Patrice Codogno
- *Correspondence: Aurore Claude-Taupin, ; Nicolas Dupont, ; Patrice Codogno,
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40
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Ghosh R, Gillaspie JJ, Campbell KS, Symons JD, Boudina S, Pattison JS. Chaperone-mediated autophagy protects cardiomyocytes against hypoxic-cell death. Am J Physiol Cell Physiol 2022; 323:C1555-C1575. [PMID: 35584327 PMCID: PMC9829466 DOI: 10.1152/ajpcell.00369.2021] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 05/02/2022] [Accepted: 05/16/2022] [Indexed: 01/22/2023]
Abstract
Chaperone-mediated autophagy (CMA) is a chaperone-dependent process of selective cytosolic protein turnover that targets specific proteins to lysosomes for degradation. Enhancing protein degradation mechanisms has been shown to be beneficial in multiple models of cardiac disease, including myocardial infarction (MI) and ischemia-reperfusion (I/R) injury. However, the causal role of CMA in cardiomyocyte injury and death is largely unknown. Hypoxia is an important contributor to both MI and I/R damage, which are major, precedent causes of heart failure. Upregulating CMA was hypothesized to protect against hypoxia-induced cardiomyocyte death. Lysosome-associated membrane protein 2a (Lamp2a) overexpression and knockdown were used to causally study CMA's role in hypoxically stressed cardiomyocytes. LAMP2a protein levels were used as both a primary indicator and driver of CMA function. Hypoxic stress was stimulated by CoCl2 treatment, which increased LAMP2a protein levels (+1.4-fold) and induced cardiomyocyte apoptosis (+3.2-4.0-fold). Lamp2a siRNA knockdown (-3.2-fold) of control cardiomyocytes increased apoptosis (+1.8-fold) suggesting that loss of CMA is detrimental for cardiomyocyte survival. However, there was neither an additive nor a synergistic effect on cell death when Lamp2a-silenced cells were treated with CoCl2. Conversely, Lamp2a overexpression (+3.0-fold) successfully reduced hypoxia-induced apoptosis by ∼50%. LAMP2a was also significantly increased (+1.7-fold) in ischemic heart failure patient samples, similar to hypoxically stressed cardiomyocytes. The failing ischemic hearts may have had insufficient CMA activation. To our knowledge, this study for the first time establishes a protective role for CMA (via Lamp2a overexpression) against hypoxia-induced cardiomyocyte loss and reveals the intriguing possibility that CMA activation may offer a cardioprotective treatment for ischemic heart disease.
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Affiliation(s)
- Rajeshwary Ghosh
- Division of Basic Biomedical Sciences, Sanford School of Medicine, University of South Dakota, Vermillion, South Dakota
- Department of Nutrition and Integrative Physiology Program in Molecular Medicine, University of Utah, Salt Lake City, Utah
| | - Jennifer Jason Gillaspie
- Division of Basic Biomedical Sciences, Sanford School of Medicine, University of South Dakota, Vermillion, South Dakota
| | - Kenneth S Campbell
- Department of Physiology, College of Medicine, University of Kentucky, Lexington, Kentucky
| | - J David Symons
- Department of Nutrition and Integrative Physiology Program in Molecular Medicine, University of Utah, Salt Lake City, Utah
| | - Sihem Boudina
- Department of Nutrition and Integrative Physiology Program in Molecular Medicine, University of Utah, Salt Lake City, Utah
| | - James Scott Pattison
- Division of Basic Biomedical Sciences, Sanford School of Medicine, University of South Dakota, Vermillion, South Dakota
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41
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Xu Y, Yang X. Autophagy and pluripotency: self-eating your way to eternal youth. Trends Cell Biol 2022; 32:868-882. [PMID: 35490141 PMCID: PMC10433133 DOI: 10.1016/j.tcb.2022.04.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 03/30/2022] [Accepted: 04/01/2022] [Indexed: 01/18/2023]
Abstract
Pluripotent stem cells (PSCs) can self-renew indefinitely in culture while retaining the potential to differentiate into virtually all normal cell types in the adult animal. Due to these remarkable properties, PSCs not only provide a superb system to investigate mammalian development and model diseases, but also hold promise for regenerative therapies. Autophagy is a self-digestive process that targets proteins, organelles, and other cellular contents for lysosomal degradation. Here, we review recent literature on the mechanistic role of different types of autophagy in embryonic development, embryonic stem cells (ESCs), and induced PSCs (iPSCs), focusing on their remodeling functions on protein, metabolism, and epigenetics. We present a perspective on unsolved issues and propose that autophagy is a promising target to modulate acquisition, maintenance, and directed differentiation of PSCs.
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Affiliation(s)
- Yi Xu
- Department of Cancer Biology and Abramson Family Cancer Research Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA; Shanghai Key Laboratory of Metabolic Remodeling and Health, Institute of Metabolism and Integrative Biology, Fudan University, Shanghai, China.
| | - Xiaolu Yang
- Department of Cancer Biology and Abramson Family Cancer Research Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA.
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42
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Rovira M, Sereda R, Pladevall‐Morera D, Ramponi V, Marin I, Maus M, Madrigal‐Matute J, Díaz A, García F, Muñoz J, Cuervo AM, Serrano M. The lysosomal proteome of senescent cells contributes to the senescence secretome. Aging Cell 2022; 21:e13707. [PMID: 36087066 PMCID: PMC9577959 DOI: 10.1111/acel.13707] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 08/01/2022] [Accepted: 08/13/2022] [Indexed: 01/31/2023] Open
Abstract
Senescent cells accumulate in tissues over time, favoring the onset and progression of multiple age-related diseases. Senescent cells present a remarkable increase in lysosomal mass and elevated autophagic activity. Here, we report that two main autophagic pathways macroautophagy (MA) and chaperone-mediated autophagy (CMA) are constitutively upregulated in senescent cells. Proteomic analyses of the subpopulations of lysosomes preferentially engaged in each of these types of autophagy revealed profound quantitative and qualitative changes in senescent cells, affecting both lysosomal resident proteins and cargo proteins delivered to lysosomes for degradation. These studies have led us to identify resident lysosomal proteins that are highly augmented in senescent cells and can be used as novel markers of senescence, such as arylsulfatase ARSA. The abundant secretome of senescent cells, known as SASP, is considered their main pathological mediator; however, little is known about the mechanisms of SASP secretion. Some secretory cells, including melanocytes, use the small GTPase RAB27A to perform lysosomal secretion. We found that this process is exacerbated in the case of senescent melanoma cells, as revealed by the exposure of lysosomal membrane integral proteins LAMP1 and LAMP2 in their plasma membrane. Interestingly, a subset of SASP components, including cytokines CCL2, CCL3, CXCL12, cathepsin CTSD, or the protease inhibitor SERPINE1, are secreted in a RAB27A-dependent manner in senescent melanoma cells. Finally, proteins previously identified as plasma biomarkers of aging are highly enriched in the lysosomes of senescent cells, including CTSD. We conclude that the lysosomal proteome of senescent cells is profoundly reconfigured, and that some senescent cells can be highly active in lysosomal exocytosis.
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Affiliation(s)
- Miguel Rovira
- Cellular Plasticity and Disease GroupInstitute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST)BarcelonaSpain
| | - Rebecca Sereda
- Department of Developmental and Molecular BiologyAlbert Einstein College of MedicineNew YorkNew YorkUSA
- Institute for Aging StudiesAlbert Einstein College of MedicineNew YorkNew YorkUSA
| | - David Pladevall‐Morera
- Department of Cellular and Molecular Medicine, Center for Chromosome Stability and Center for Healthy AgingUniversity of CopenhagenCopenhagenDenmark
| | - Valentina Ramponi
- Cellular Plasticity and Disease GroupInstitute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST)BarcelonaSpain
| | - Ines Marin
- Cellular Plasticity and Disease GroupInstitute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST)BarcelonaSpain
| | - Mate Maus
- Cellular Plasticity and Disease GroupInstitute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST)BarcelonaSpain
| | - Julio Madrigal‐Matute
- Department of Developmental and Molecular BiologyAlbert Einstein College of MedicineNew YorkNew YorkUSA
- Institute for Aging StudiesAlbert Einstein College of MedicineNew YorkNew YorkUSA
- Instituto Biomédico de Nutrición y SaludEldaSpain
| | - Antonio Díaz
- Department of Developmental and Molecular BiologyAlbert Einstein College of MedicineNew YorkNew YorkUSA
- Institute for Aging StudiesAlbert Einstein College of MedicineNew YorkNew YorkUSA
| | - Fernando García
- Proteomics UnitSpanish National Cancer Research Center (CNIO)MadridSpain
| | - Javier Muñoz
- Proteomics UnitSpanish National Cancer Research Center (CNIO)MadridSpain
- Biocruces Bizkaia Health Research InstituteBarakaldoSpain
- Ikerbasque, Basque Foundation for ScienceBilbaoSpain
| | - Ana María Cuervo
- Department of Developmental and Molecular BiologyAlbert Einstein College of MedicineNew YorkNew YorkUSA
- Institute for Aging StudiesAlbert Einstein College of MedicineNew YorkNew YorkUSA
| | - Manuel Serrano
- Cellular Plasticity and Disease GroupInstitute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST)BarcelonaSpain
- Catalan Institution for Research and Advanced Studies (ICREA)BarcelonaSpain
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43
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Yazdani S, Bilan PJ, Jaldin-Fincati JR, Pang J, Ceban F, Saran E, Brumell JH, Freeman SA, Klip A. Dynamic glucose uptake, storage, and release by human microvascular endothelial cells. Mol Biol Cell 2022; 33:ar106. [PMID: 35921166 DOI: 10.1091/mbc.e22-04-0146] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Endothelia determine blood-to-tissue solute delivery, yet glucose transit is poorly understood. To illuminate mechanisms, we tracked [3H]-2-deoxyglucose (2-DG) in human adipose-tissue microvascular endothelial cells. 2-DG uptake was largely facilitated by the glucose transporters GLUT1 and GLUT3. Once in the cytosol, >80% of 2-DG became phosphorylated and ∼20% incorporated into glycogen, suggesting that transported glucose is readily accessible to cytosolic enzymes. Interestingly, a fraction of intracellular 2-DG was released over time (15-20% over 30 min) with slower kinetics than for uptake, involving GLUT3. In contrast to intracellular 2-DG, the released 2-DG was largely unphosphorylated. Glucose release involved endoplasmic reticulum-resident translocases/phosphatases and was stimulated by adrenaline, consistent with participation of glycogenolysis and glucose dephosphorylation. Surprisingly, the fluorescent glucose derivative 2-NBD-glucose (2-NBDG) entered cells largely via fluid phase endocytosis and exited by recycling. 2-NBDG uptake was insensitive to GLUT1/GLUT3 inhibition, suggesting poor influx across membranes. 2-NBDG recycling, but not 2-DG efflux, was sensitive to N-ethyl maleimide. In sum, by utilizing radioactive and fluorescent glucose derivatives, we identified two parallel routes of entry: uptake into the cytosol through dedicated glucose transporters and endocytosis. This reveals the complex glucose handling by endothelial cells that may contribute to glucose delivery to tissues.
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Affiliation(s)
- Samaneh Yazdani
- Cell Biology Program, The Hospital for Sick Children, Toronto, ON, Canada, M5G 0A4
| | - Philip J Bilan
- Cell Biology Program, The Hospital for Sick Children, Toronto, ON, Canada, M5G 0A4
| | | | - Janice Pang
- Cell Biology Program, The Hospital for Sick Children, Toronto, ON, Canada, M5G 0A4
| | - Felicia Ceban
- Cell Biology Program, The Hospital for Sick Children, Toronto, ON, Canada, M5G 0A4
| | - Ekambir Saran
- Cell Biology Program, The Hospital for Sick Children, Toronto, ON, Canada, M5G 0A4
| | - John H Brumell
- Cell Biology Program, The Hospital for Sick Children, Toronto, ON, Canada, M5G 0A4.,Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada, M5S 1A1.,Institute of Medical Science, University of Toronto, Toronto, ON, Canada, M5S 1A1.,SickKids IBD Centre, Hospital for Sick Children, Toronto, ON, Canada, M5G 0A4
| | - Spencer A Freeman
- Cell Biology Program, The Hospital for Sick Children, Toronto, ON, Canada, M5G 0A4.,Department of Biochemistry, University of Toronto, Toronto, ON, Canada, M5S 1A1
| | - Amira Klip
- Cell Biology Program, The Hospital for Sick Children, Toronto, ON, Canada, M5G 0A4.,Department of Biochemistry, University of Toronto, Toronto, ON, Canada, M5S 1A1.,Department of Paediatrics, University of Toronto, Toronto, ON, Canada, M5S 1A1.,Department of Physiology, University of Toronto, Toronto, ON, Canada, M5S 1A1
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44
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Krause GJ, Diaz A, Jafari M, Khawaja RR, Agullo‐Pascual E, Santiago‐Fernández O, Richards AL, Chen K, Dmitriev P, Sun Y, See SK, Abdelmohsen K, Mazan‐Mamczarz K, Krogan NJ, Gorospe M, Swaney DL, Sidoli S, Bravo‐Cordero JJ, Kampmann M, Cuervo AM. Reduced endosomal microautophagy activity in aging associates with enhanced exocyst-mediated protein secretion. Aging Cell 2022; 21:e13713. [PMID: 36116133 PMCID: PMC9577956 DOI: 10.1111/acel.13713] [Citation(s) in RCA: 13] [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: 07/04/2022] [Revised: 08/23/2022] [Accepted: 08/24/2022] [Indexed: 01/31/2023] Open
Abstract
Autophagy is essential for protein quality control and regulation of the functional proteome. Failure of autophagy pathways with age contributes to loss of proteostasis in aged organisms and accelerates the progression of age-related diseases. In this work, we show that activity of endosomal microautophagy (eMI), a selective type of autophagy occurring in late endosomes, declines with age and identify the sub-proteome affected by this loss of function. Proteomics of late endosomes from old mice revealed an aberrant glycation signature for Hsc70, the chaperone responsible for substrate targeting to eMI. Age-related Hsc70 glycation reduces its stability in late endosomes by favoring its organization into high molecular weight protein complexes and promoting its internalization/degradation inside late endosomes. Reduction of eMI with age associates with an increase in protein secretion, as late endosomes can release protein-loaded exosomes upon plasma membrane fusion. Our search for molecular mediators of the eMI/secretion switch identified the exocyst-RalA complex, known for its role in exocytosis, as a novel physiological eMI inhibitor that interacts with Hsc70 and acts directly at the late endosome membrane. This inhibitory function along with the higher exocyst-RalA complex levels detected in late endosomes from old mice could explain, at least in part, reduced eMI activity with age. Interaction of Hsc70 with components of the exocyst-RalA complex places this chaperone in the switch from eMI to secretion. Reduced intracellular degradation in favor of extracellular release of undegraded material with age may be relevant to the spreading of proteotoxicity associated with aging and progression of proteinopathies.
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Affiliation(s)
- Gregory J. Krause
- Department of Developmental and Molecular BiologyAlbert Einstein College of MedicineBronxNew YorkUSA
- Institute for Aging Studies, Albert Einstein College of MedicineBronxNew YorkUSA
| | - Antonio Diaz
- Department of Developmental and Molecular BiologyAlbert Einstein College of MedicineBronxNew YorkUSA
- Institute for Aging Studies, Albert Einstein College of MedicineBronxNew YorkUSA
| | - Maryam Jafari
- Department of Developmental and Molecular BiologyAlbert Einstein College of MedicineBronxNew YorkUSA
- Institute for Aging Studies, Albert Einstein College of MedicineBronxNew YorkUSA
| | - Rabia R. Khawaja
- Department of Developmental and Molecular BiologyAlbert Einstein College of MedicineBronxNew YorkUSA
- Institute for Aging Studies, Albert Einstein College of MedicineBronxNew YorkUSA
| | - Esperanza Agullo‐Pascual
- Microscopy and Advanced Bioimaging Core, Icahn School of Medicine at Mount SinaiNew YorkNew YorkUSA
| | - Olaya Santiago‐Fernández
- Department of Developmental and Molecular BiologyAlbert Einstein College of MedicineBronxNew YorkUSA
- Institute for Aging Studies, Albert Einstein College of MedicineBronxNew YorkUSA
| | - Alicia L. Richards
- Department of Cellular Molecular PharmacologyUniversity of California San FranciscoSan FranciscoCaliforniaUSA
- The J. David Gladstone InstitutesSan FranciscoCaliforniaUSA
- Quantitative Biosciences Institute (QBI), University of California San FranciscoSan FranciscoCaliforniaUSA
| | - Kuei‐Ho Chen
- Department of Cellular Molecular PharmacologyUniversity of California San FranciscoSan FranciscoCaliforniaUSA
- The J. David Gladstone InstitutesSan FranciscoCaliforniaUSA
- Quantitative Biosciences Institute (QBI), University of California San FranciscoSan FranciscoCaliforniaUSA
| | - Phillip Dmitriev
- Department of Developmental and Molecular BiologyAlbert Einstein College of MedicineBronxNew YorkUSA
- Institute for Aging Studies, Albert Einstein College of MedicineBronxNew YorkUSA
| | - Yan Sun
- Department of BiochemistryAlbert Einstein College of MedicineBronxNew YorkUSA
| | - Stephanie K. See
- Department of Biochemistry and BiophysicsInstitute for Neurodegenerative Diseases, University of California, San FranciscoSan FranciscoCaliforniaUSA
| | - Kotb Abdelmohsen
- Laboratory of Genetics and Genomics, National Institute on Aging Intramural Research ProgramNational Institutes of HealthBaltimoreMarylandUSA
| | - Krystyna Mazan‐Mamczarz
- Laboratory of Genetics and Genomics, National Institute on Aging Intramural Research ProgramNational Institutes of HealthBaltimoreMarylandUSA
| | - Nevan J. Krogan
- Department of Cellular Molecular PharmacologyUniversity of California San FranciscoSan FranciscoCaliforniaUSA
- The J. David Gladstone InstitutesSan FranciscoCaliforniaUSA
- Quantitative Biosciences Institute (QBI), University of California San FranciscoSan FranciscoCaliforniaUSA
| | - Myriam Gorospe
- Laboratory of Genetics and Genomics, National Institute on Aging Intramural Research ProgramNational Institutes of HealthBaltimoreMarylandUSA
| | - Danielle L. Swaney
- Department of Cellular Molecular PharmacologyUniversity of California San FranciscoSan FranciscoCaliforniaUSA
- The J. David Gladstone InstitutesSan FranciscoCaliforniaUSA
- Quantitative Biosciences Institute (QBI), University of California San FranciscoSan FranciscoCaliforniaUSA
| | - Simone Sidoli
- Department of BiochemistryAlbert Einstein College of MedicineBronxNew YorkUSA
| | - Jose Javier Bravo‐Cordero
- Department of Medicine, Division of Hematology and Medical OncologyIcahn School of Medicine at Mount SinaiNew YorkNew YorkUSA
- The Tisch Cancer Institute, Icahn School of Medicine at Mount SinaiNew YorkNew YorkUSA
| | - Martin Kampmann
- Department of Biochemistry and BiophysicsInstitute for Neurodegenerative Diseases, University of California, San FranciscoSan FranciscoCaliforniaUSA
| | - Ana Maria Cuervo
- Department of Developmental and Molecular BiologyAlbert Einstein College of MedicineBronxNew YorkUSA
- Institute for Aging Studies, Albert Einstein College of MedicineBronxNew YorkUSA
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45
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Chaperone-mediated autophagy: mechanisms and physiological relevance. CURRENT OPINION IN PHYSIOLOGY 2022. [DOI: 10.1016/j.cophys.2022.100597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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46
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Gómez-Virgilio L, Silva-Lucero MDC, Flores-Morelos DS, Gallardo-Nieto J, Lopez-Toledo G, Abarca-Fernandez AM, Zacapala-Gómez AE, Luna-Muñoz J, Montiel-Sosa F, Soto-Rojas LO, Pacheco-Herrero M, Cardenas-Aguayo MDC. Autophagy: A Key Regulator of Homeostasis and Disease: An Overview of Molecular Mechanisms and Modulators. Cells 2022; 11:cells11152262. [PMID: 35892559 PMCID: PMC9329718 DOI: 10.3390/cells11152262] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 07/07/2022] [Accepted: 07/11/2022] [Indexed: 01/18/2023] Open
Abstract
Autophagy is a highly conserved lysosomal degradation pathway active at basal levels in all cells. However, under stress conditions, such as a lack of nutrients or trophic factors, it works as a survival mechanism that allows the generation of metabolic precursors for the proper functioning of the cells until the nutrients are available. Neurons, as post-mitotic cells, depend largely on autophagy to maintain cell homeostasis to get rid of damaged and/or old organelles and misfolded or aggregated proteins. Therefore, the dysfunction of this process contributes to the pathologies of many human diseases. Furthermore, autophagy is highly active during differentiation and development. In this review, we describe the current knowledge of the different pathways, molecular mechanisms, factors that induce it, and the regulation of mammalian autophagy. We also discuss its relevant role in development and disease. Finally, here we summarize several investigations demonstrating that autophagic abnormalities have been considered the underlying reasons for many human diseases, including liver disease, cardiovascular, cerebrovascular diseases, neurodegenerative diseases, neoplastic diseases, cancers, and, more recently, infectious diseases, such as SARS-CoV-2 caused COVID-19 disease.
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Affiliation(s)
- Laura Gómez-Virgilio
- Laboratory of Cellular Reprogramming, Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autonoma de Mexico, Mexico City 04510, Mexico; (L.G.-V.); (M.-d.-C.S.-L.); (D.-S.F.-M.); (J.G.-N.); (G.L.-T.); (A.-M.A.-F.)
| | - Maria-del-Carmen Silva-Lucero
- Laboratory of Cellular Reprogramming, Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autonoma de Mexico, Mexico City 04510, Mexico; (L.G.-V.); (M.-d.-C.S.-L.); (D.-S.F.-M.); (J.G.-N.); (G.L.-T.); (A.-M.A.-F.)
| | - Diego-Salvador Flores-Morelos
- Laboratory of Cellular Reprogramming, Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autonoma de Mexico, Mexico City 04510, Mexico; (L.G.-V.); (M.-d.-C.S.-L.); (D.-S.F.-M.); (J.G.-N.); (G.L.-T.); (A.-M.A.-F.)
- Laboratorio de Biomedicina Molecular, Facultad de Ciencias Químico-Biológicas, Universidad Autónoma de Guerrero, Chilpancingo de los Bravo 39070, Guerrero, Mexico;
| | - Jazmin Gallardo-Nieto
- Laboratory of Cellular Reprogramming, Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autonoma de Mexico, Mexico City 04510, Mexico; (L.G.-V.); (M.-d.-C.S.-L.); (D.-S.F.-M.); (J.G.-N.); (G.L.-T.); (A.-M.A.-F.)
- Biotechnology Engeniering, Universidad Politécnica de Quintana Roo, Cancún 77500, Quintana Roo, Mexico
| | - Gustavo Lopez-Toledo
- Laboratory of Cellular Reprogramming, Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autonoma de Mexico, Mexico City 04510, Mexico; (L.G.-V.); (M.-d.-C.S.-L.); (D.-S.F.-M.); (J.G.-N.); (G.L.-T.); (A.-M.A.-F.)
| | - Arminda-Mercedes Abarca-Fernandez
- Laboratory of Cellular Reprogramming, Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autonoma de Mexico, Mexico City 04510, Mexico; (L.G.-V.); (M.-d.-C.S.-L.); (D.-S.F.-M.); (J.G.-N.); (G.L.-T.); (A.-M.A.-F.)
- Biotechnology Engeniering, Universidad Politécnica de Quintana Roo, Cancún 77500, Quintana Roo, Mexico
| | - Ana-Elvira Zacapala-Gómez
- Laboratorio de Biomedicina Molecular, Facultad de Ciencias Químico-Biológicas, Universidad Autónoma de Guerrero, Chilpancingo de los Bravo 39070, Guerrero, Mexico;
| | - José Luna-Muñoz
- National Dementia BioBank, Ciencias Biológicas, Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México, Cuautitlan Izcalli 53150, Estado de México, Mexico; (J.L.-M.); (F.M.-S.)
- Banco Nacional de Cerebros-UNPHU, Universidad Nacional Pedro Henríquez Ureña, Santo Domingo 11805, Dominican Republic
| | - Francisco Montiel-Sosa
- National Dementia BioBank, Ciencias Biológicas, Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México, Cuautitlan Izcalli 53150, Estado de México, Mexico; (J.L.-M.); (F.M.-S.)
| | - Luis O. Soto-Rojas
- Laboratorio de Patogénesis Molecular, Laboratorio 4, Edificio A4, Carrera Médico Cirujano, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Tlalnepantla 54090, Estado de México, Mexico;
- Red MEDICI, Carrera Médico Cirujano, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Tlalnepantla 54090, Estado de México, Mexico
| | - Mar Pacheco-Herrero
- Neuroscience Research Laboratory, Faculty of Health Sciences, Pontificia Universidad Católica Madre y Maestra, Santiago de los Caballeros 51000, Dominican Republic;
| | - Maria-del-Carmen Cardenas-Aguayo
- Laboratory of Cellular Reprogramming, Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autonoma de Mexico, Mexico City 04510, Mexico; (L.G.-V.); (M.-d.-C.S.-L.); (D.-S.F.-M.); (J.G.-N.); (G.L.-T.); (A.-M.A.-F.)
- Correspondence: ; Tel.: +52-55-2907-0937
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47
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Gomez-Sintes R, Xin Q, Jimenez-Loygorri JI, McCabe M, Diaz A, Garner TP, Cotto-Rios XM, Wu Y, Dong S, Reynolds CA, Patel B, de la Villa P, Macian F, Boya P, Gavathiotis E, Cuervo AM. Targeting retinoic acid receptor alpha-corepressor interaction activates chaperone-mediated autophagy and protects against retinal degeneration. Nat Commun 2022; 13:4220. [PMID: 35864098 PMCID: PMC9304322 DOI: 10.1038/s41467-022-31869-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 06/30/2022] [Indexed: 11/09/2022] Open
Abstract
Chaperone-mediated autophagy activity, essential in the cellular defense against proteotoxicity, declines with age, and preventing this decline in experimental genetic models has proven beneficial. Here, we have identified the mechanism of action of selective chaperone-mediated autophagy activators previously developed by our group and have leveraged that information to generate orally bioavailable chaperone-mediated autophagy activators with favorable brain exposure. Chaperone-mediated autophagy activating molecules stabilize the interaction between retinoic acid receptor alpha - a known endogenous inhibitor of chaperone-mediated autophagy - and its co-repressor, nuclear receptor corepressor 1, resulting in changes of a discrete subset of the retinoic acid receptor alpha transcriptional program that leads to selective chaperone-mediated autophagy activation. Chaperone-mediated autophagy activators molecules activate this pathway in vivo and ameliorate retinal degeneration in a retinitis pigmentosa mouse model. Our findings reveal a mechanism for pharmacological targeting of chaperone-mediated autophagy activation and suggest a therapeutic strategy for retinal degeneration.
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Affiliation(s)
- Raquel Gomez-Sintes
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
- Institute for Aging Studies of the Department of Medicine of the Albert Einstein College of Medicine, Bronx, NY, 10461, USA
- Department of Cellular and Molecular Biology, Centro de Investigaciones Biológicas Margarita Salas, CSIC, Madrid, 28040, Spain
| | - Qisheng Xin
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
- Institute for Aging Studies of the Department of Medicine of the Albert Einstein College of Medicine, Bronx, NY, 10461, USA
- Department of Biochemistry, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
| | - Juan Ignacio Jimenez-Loygorri
- Department of Cellular and Molecular Biology, Centro de Investigaciones Biológicas Margarita Salas, CSIC, Madrid, 28040, Spain
| | - Mericka McCabe
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
- Institute for Aging Studies of the Department of Medicine of the Albert Einstein College of Medicine, Bronx, NY, 10461, USA
- Department of Biochemistry, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
| | - Antonio Diaz
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
- Institute for Aging Studies of the Department of Medicine of the Albert Einstein College of Medicine, Bronx, NY, 10461, USA
| | - Thomas P Garner
- Department of Biochemistry, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
| | - Xiomaris M Cotto-Rios
- Department of Biochemistry, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
| | - Yang Wu
- Department of Biochemistry, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
| | - Shuxian Dong
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
- Institute for Aging Studies of the Department of Medicine of the Albert Einstein College of Medicine, Bronx, NY, 10461, USA
| | - Cara A Reynolds
- Department of Pathology, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
| | - Bindi Patel
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
- Institute for Aging Studies of the Department of Medicine of the Albert Einstein College of Medicine, Bronx, NY, 10461, USA
| | - Pedro de la Villa
- Department; of System Biology, Universidad de Alcalá, Madrid, Spain and Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, 28801, Spain
| | - Fernando Macian
- Institute for Aging Studies of the Department of Medicine of the Albert Einstein College of Medicine, Bronx, NY, 10461, USA
- Department of Pathology, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
| | - Patricia Boya
- Department of Cellular and Molecular Biology, Centro de Investigaciones Biológicas Margarita Salas, CSIC, Madrid, 28040, Spain.
| | - Evripidis Gavathiotis
- Institute for Aging Studies of the Department of Medicine of the Albert Einstein College of Medicine, Bronx, NY, 10461, USA.
- Department of Biochemistry, Albert Einstein College of Medicine, Bronx, NY, 10461, USA.
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY, USA.
| | - Ana Maria Cuervo
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY, 10461, USA.
- Institute for Aging Studies of the Department of Medicine of the Albert Einstein College of Medicine, Bronx, NY, 10461, USA.
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY, USA.
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48
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Chaperone-Mediated Autophagy in Neurodegenerative Diseases: Molecular Mechanisms and Pharmacological Opportunities. Cells 2022; 11:cells11142250. [PMID: 35883693 PMCID: PMC9323300 DOI: 10.3390/cells11142250] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 07/12/2022] [Accepted: 07/15/2022] [Indexed: 11/23/2022] Open
Abstract
Chaperone-mediated autophagy (CMA) is a protein degradation mechanism through lysosomes. By targeting the KFERQ motif of the substrate, CMA is responsible for the degradation of about 30% of cytosolic proteins, including a series of proteins associated with neurodegenerative diseases (NDs). The fact that decreased activity of CMA is observed in NDs, and ND-associated mutant proteins, including alpha-synuclein and Tau, directly impair CMA activity reveals a possible vicious cycle of CMA impairment and pathogenic protein accumulation in ND development. Given the intrinsic connection between CMA dysfunction and ND, enhancement of CMA has been regarded as a strategy to counteract ND. Indeed, genetic and pharmacological approaches to modulate CMA have been shown to promote the degradation of ND-associated proteins and alleviate ND phenotypes in multiple ND models. This review summarizes the current knowledge on the mechanism of CMA with a focus on its relationship with NDs and discusses the therapeutic potential of CMA modulation for ND.
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49
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Cell Autophagy in NASH and NASH-Related Hepatocellular Carcinoma. Int J Mol Sci 2022; 23:ijms23147734. [PMID: 35887082 PMCID: PMC9322157 DOI: 10.3390/ijms23147734] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 07/10/2022] [Accepted: 07/11/2022] [Indexed: 12/21/2022] Open
Abstract
Autophagy, a cellular self-digestion process, involves the degradation of targeted cell components such as damaged organelles, unfolded proteins, and intracellular pathogens by lysosomes. It is a major quality control system of the cell and plays an important role in cell differentiation, survival, development, and homeostasis. Alterations in the cell autophagic machinery have been implicated in several disease conditions, including neurodegeneration, autoimmunity, cancer, infection, inflammatory diseases, and aging. In non-alcoholic fatty liver disease, including its inflammatory form, non-alcoholic steatohepatitis (NASH), a decrease in cell autophagic activity, has been implicated in the initial development and progression of steatosis to NASH and hepatocellular carcinoma (HCC). We present an overview of autophagy as it occurs in mammalian cells with an insight into the emerging understanding of the role of autophagy in NASH and NASH-related HCC.
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50
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Johnson CN, Jensen RS, Von Schulze AT, Geiger PC. Heat Therapy Can Improve Hepatic Mitochondrial Function and Glucose Control. Exerc Sport Sci Rev 2022; 50:162-170. [PMID: 35394967 DOI: 10.1249/jes.0000000000000296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review proposes the novel hypothesis that heat can be used as an alternative therapy to exercise to improve hepatic mitochondrial function and glucose regulation in patients with nonalcoholic fatty liver disease. Although exercise has proven benefits in treating nonalcoholic fatty liver disease, barriers to exercise in the majority of patients necessitate an alternative method of treatment.
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Affiliation(s)
- Chelsea N Johnson
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS
| | - Reilly S Jensen
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS
| | | | - Paige C Geiger
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS
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