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Knupp J, Chen YJ, Wang E, Arvan P, Tsai B. Sigma-1 receptor recruits LC3 mRNA to ER-associated omegasomes to promote localized LC3 translation enabling functional autophagy. Cell Rep 2024; 43:114619. [PMID: 39128005 DOI: 10.1016/j.celrep.2024.114619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 05/14/2024] [Accepted: 07/25/2024] [Indexed: 08/13/2024] Open
Abstract
Autophagosome formation initiated on the endoplasmic reticulum (ER)-associated omegasome requires LC3. Translational regulation of LC3 biosynthesis is unexplored. Here we demonstrate that LC3 mRNA is recruited to omegasomes by directly binding to the ER transmembrane Sigma-1 receptor (S1R). Cell-based and in vitro reconstitution experiments show that S1R interacts with the 3' UTR of LC3 mRNA and ribosomes to promote LC3 translation. Strikingly, the 3' UTR of LC3 is also required for LC3 protein lipidation, thereby linking the mRNA-3' UTR to LC3 function. An autophagy-defective S1R mutant responsible for amyotrophic lateral sclerosis cannot bind LC3 mRNA or induce LC3 translation. We propose a model wherein S1R de-represses LC3 mRNA via its 3' UTR at the ER, enabling LC3 biosynthesis and lipidation. Because several other LC3-related proteins use the same mechanism, our data reveal a conserved pathway for localized translation essential for autophagosome biogenesis with insights illuminating the molecular basis of a neurodegenerative disease.
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Affiliation(s)
- Jeffrey Knupp
- Department of Cell & Developmental Biology, University of Michigan Medical School, 109 Zina Pitcher Place, BSRB 3043, Ann Arbor, MI 48109, USA; Cellular and Molecular Biology Program, University of Michigan Medical School, 1135 Catherine Street, Ann Arbor, MI 48109 USA
| | - Yu-Jie Chen
- Department of Cell & Developmental Biology, University of Michigan Medical School, 109 Zina Pitcher Place, BSRB 3043, Ann Arbor, MI 48109, USA
| | - Emily Wang
- Department of Cell & Developmental Biology, University of Michigan Medical School, 109 Zina Pitcher Place, BSRB 3043, Ann Arbor, MI 48109, USA
| | - Peter Arvan
- Cellular and Molecular Biology Program, University of Michigan Medical School, 1135 Catherine Street, Ann Arbor, MI 48109 USA; Division of Metabolism Endocrinology & Diabetes, University of Michigan Medical School, 1000 Wall Street, Ann Arbor, MI 48105, USA.
| | - Billy Tsai
- Department of Cell & Developmental Biology, University of Michigan Medical School, 109 Zina Pitcher Place, BSRB 3043, Ann Arbor, MI 48109, USA; Cellular and Molecular Biology Program, University of Michigan Medical School, 1135 Catherine Street, Ann Arbor, MI 48109 USA.
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2
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Saxena S, Anand SK, Sharma A, Kakkar P. Involvement of Sirt1-FoxO3a-Bnip3 axis and autophagy mediated mitochondrial turnover in according protection to hyperglycemic NRK-52E cells by Berberine. Toxicol In Vitro 2024:105916. [PMID: 39127087 DOI: 10.1016/j.tiv.2024.105916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 07/25/2024] [Accepted: 08/07/2024] [Indexed: 08/12/2024]
Abstract
Aberrant accumulation of dysfunctional mitochondria in renal cells during hyperglycemia signifies perturbed autophagy and mitochondrial turnover. This study aims to focus on the underlying mechanism involved in autophagy and mitophagy inducing efficacy of Berberine (isoquinoline alkaloid) in hyperglycemic NRK-52E cells. Berberine mediated protection to hyperglycemic cells prevented alteration in mitochondrial structure and function. Treatment with SRT-1720 (Sirt1 activator) enhanced autophagy, decreased apoptosis, upregulated expression of downstream moieties (FoxO3a and Bnip3) and ameliorated mitochondria related anomalies while nicotinamide (Sirt1 inhibitor) treatment exhibited reversal of the same. GFP reporter assay ascertained enhanced transcriptional activity of FoxO in Berberine treated hyperglycemic cells, which was found to be correlated to increased expression of downstream protein Bnip3. Knocking down FoxO3a disrupted autophagy and stimulated apoptosis. N-acetyl-L-cysteine pre-treatment confirmed that generation of ROS intervened high glucose induced toxicity in NRK-52E cells. Berberine co-treatment resulted in differential expressions of key proteins involved in autophagy and mitophagy like LC3B, ATGs, Beclin1, Sirt1, Bnip3, FoxO3a and Parkin. Further, enhanced mitophagy in Berberine treated cells was confirmed by transmission electron microscopy. Thus, our findings give evidence that the protection accorded by Berberine against hyperglycemia in renal proximal tubular cells (NRK-52E) involves instigation of Sirt1-FoxO3a-Bnip3 axis and autophagy mediated mitophagy induction.
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Affiliation(s)
- Sugandh Saxena
- Herbal Research Laboratory, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan 31, Mahatma Gandhi Marg, Lucknow 226001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, Uttar Pradesh, India
| | - Sumit Kumar Anand
- Herbal Research Laboratory, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan 31, Mahatma Gandhi Marg, Lucknow 226001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, Uttar Pradesh, India
| | - Ankita Sharma
- Herbal Research Laboratory, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan 31, Mahatma Gandhi Marg, Lucknow 226001, India; Department of Biochemistry, University of Lucknow, Lucknow 226001, India
| | - Poonam Kakkar
- Herbal Research Laboratory, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan 31, Mahatma Gandhi Marg, Lucknow 226001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, Uttar Pradesh, India.
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3
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Ning F, Wei D, Yu H, Song T, Li Z, Ma H, Sun Y. Construction of a Multifunctional Upconversion Nanoplatform Based on Autophagy Inhibition and Photodynamic Therapy Combined with Chemotherapy for Antitumor Therapy. Mol Pharm 2024. [PMID: 39106330 DOI: 10.1021/acs.molpharmaceut.4c00203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/09/2024]
Abstract
Inhibition of autophagy increases the sensitivity of tumor cells to radiotherapy and chemotherapy and improves the therapeutic effect on tumors. Recently, photodynamic therapy (PDT) combined with chemotherapy has been proven to further improve the efficiency of cancer treatment. As such, combining autophagy inhibition with PDT and chemotherapy may represent a potentially effective new strategy for cancer treatment. However, currently widely studied autophagy inhibitors inevitably produce various toxic side effects due to their inherent pharmacological activity. To overcome this constraint, in this study, we designed an ideal multifunctional upconversion nanoplatform, UCNP-Ce6-EPI@mPPA + NIR (MUCEN). Control, UCNP-EPI@mPPA (MUE), UCNP-EPI@mPPA + NIR (MUEN), Ce6-EPI@mPPA (MCE), Ce6-EPI@mPPA + NIR (MCEN), and UCNP-Ce6-EPI@mPPA (MUCE) groups were set up separately as controls. Based on a combination of autophagy inhibition and PDT, the average particle size of MUCEN was 197 nm, which can simultaneously achieve the double encapsulation of chlorine e6 (Ce6) and epirubicin (EPI). In vitro tests revealed that MUCE was efficiently endocytosed by 4T1 cells under near-infrared light irradiation. Further, in vivo tests revealed that MUCE dramatically inhibited tumor growth. Immunohistochemistry results indicated that MUCE efficiently increased the expression of autophagy inhibitors p62 and LC3 in tumor tissues. The synergistic effect of autophagy inhibition and PDT with MUCE exhibited superior tumor suppression, providing an innovative approach to cancer treatment.
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Affiliation(s)
- Fang Ning
- Department of Pharmaceutics, School of Pharmacy, Qingdao University, Qingdao 266071, China
| | - Dengshuai Wei
- Department of Pharmaceutics, School of Pharmacy, Qingdao University, Qingdao 266071, China
| | - Hongli Yu
- Department of Pharmaceutics, School of Pharmacy, Qingdao University, Qingdao 266071, China
| | - Tingting Song
- Department of Pharmaceutics, School of Pharmacy, Qingdao University, Qingdao 266071, China
| | - Zhipeng Li
- Department of Pharmaceutics, School of Pharmacy, Qingdao University, Qingdao 266071, China
| | - Hongmei Ma
- Department of Gynecology, Qingdao Municipal Hospital, Qingdao 266000, China
| | - Yong Sun
- Department of Pharmaceutics, School of Pharmacy, Qingdao University, Qingdao 266071, China
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4
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Ewees MGED, Mostafa-Hadeab G, Saber S, El-Meguid EAA, Sree HTA, Abdel Rahman FEZS, Mahmoud NI. Linagliptin mitigates cisplatin-induced kidney impairment via mitophagy regulation in rats, with emphasis on SIRT-3/PGC-1α, PINK-1 and Parkin-2. Toxicol Appl Pharmacol 2024:117048. [PMID: 39102946 DOI: 10.1016/j.taap.2024.117048] [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: 02/03/2024] [Revised: 07/23/2024] [Accepted: 08/01/2024] [Indexed: 08/07/2024]
Abstract
Cisplatin (CDDP) often leads to kidney impairment, limiting its effectiveness in cancer treatment. The lack of mitophagy in proximal tubules exacerbates this issue. Hence, targeting SIRT-3 and PGC1-α shows promise in mitigating CDDP-induced kidney damage. The potential renoprotective effects of linagliptin, however, remain poorly understood. This study represents the first exploration of linagliptin's impact on CDDP-induced kidney impairment in rats, emphasizing its potential role in mitophagic pathways. The experiment involved four rat groups: Group (I) received saline only, Group (II) received a single intraperitoneal injection of CDDP at 6 mg/kg. Groups (III) and (IV) received linagliptin at 6 and 10 mg/kg p.o., respectively, seven days before CDDP administration, continuing for an additional four days. Various parameters, including renal function tests, oxidative stress, TNF-α, IL-1β, IL-6, PGC-1α, FOXO-3a, p-ERK1, and the gene expression of SIRT-3 and P62 in renal tissue, were assessed. Linagliptin improved renal function, increased antioxidant enzyme activity, and decreased IL-1β, TNF-α, and IL-6 expression. Additionally, linagliptin significantly upregulated PGC-1α and PINK-1/Parkin-2 expression while downregulating P62 expression. Moreover, linagliptin activated FOXO-3a and SIRT-3, suggesting a potential enhancement of mitophagy. Linagliptin demonstrated a positive impact on various factors related to kidney health in the context of CDDP-induced impairment. These findings suggest a potential role for linagliptin in improving cancer treatment outcomes. Clinical trials are warranted to further investigate and validate its efficacy in a clinical setting.
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Affiliation(s)
- Mohamed Gamal El-Din Ewees
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Nahda University, Beni-Suef 11787, Egypt.
| | - Gomaa Mostafa-Hadeab
- Department of Pharmacology, Medical College, Jouf University, Sakaka 11564, Saudi Arabia; Department of Pharmacology, Faculty of Medicine, Beni-Suef University, Beni-Suef 62521, Egypt.
| | - Sameh Saber
- Department of Pharmacology, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa 11152, Egypt.
| | - Eman Ali Abd El-Meguid
- Department of Anatomy and Embryology, Faculty of Medicine, Fayoum University, Fayoum 63511, Egypt.
| | - Haidy Tamer Abo Sree
- Department of Basic Sciences, Biochemistry, Faculty of Oral and Dental Medicine, Nahda University, Beni-Suef 11787, Egypt.
| | | | - Nesreen Ishak Mahmoud
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Nahda University, Beni-Suef 11787, Egypt
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5
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Zhao F, Huang Y, Ji J, Liu X, Li X, Zou L, Wu K, Liu XD, Zeng S, Wang X, Hu W, Song Y, Lu Z, Zhou B, Li P, Wang W, Zhao M, Chen J, Yi L, Fan S. IDO1 promotes CSFV replication by mediating tryptophan metabolism to inhibit NF-κB signaling. J Virol 2024; 98:e0045824. [PMID: 38814067 PMCID: PMC11265401 DOI: 10.1128/jvi.00458-24] [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: 03/14/2024] [Accepted: 03/29/2024] [Indexed: 05/31/2024] Open
Abstract
Tryptophan metabolism plays a crucial role in facilitating various cellular processes essential for maintaining normal cellular function. Indoleamine 2,3-dioxygenase 1 (IDO1) catalyzes the conversion of tryptophan (Trp) into kynurenine (Kyn), thereby initiating the degradation of Trp. The resulting Kyn metabolites have been implicated in the modulation of immune responses. Currently, the role of IDO1-mediated tryptophan metabolism in the process of viral infection remains relatively unknown. In this study, we discovered that classical swine fever virus (CSFV) infection of PK-15 cells can induce the expression of IDO1, thereby promoting tryptophan metabolism. IDO1 can negatively regulate the NF-κB signaling by mediating tryptophan metabolism, thereby facilitating CSFV replication. We found that silencing the IDO1 gene enhances the expression of IFN-α, IFN-β, and IL-6 by activating the NF-κB signaling pathway. Furthermore, our observations indicate that both silencing the IDO1 gene and administering exogenous tryptophan can inhibit CSFV replication by counteracting the cellular autophagy induced by Rapamycin. This study reveals a novel mechanism of IDO1-mediated tryptophan metabolism in CSFV infection, providing new insights and a theoretical basis for the treatment and control of CSFV.IMPORTANCEIt is well known that due to the widespread use of vaccines, the prevalence of classical swine fever (CSF) is shifting towards atypical and invisible infections. CSF can disrupt host metabolism, leading to persistent immune suppression in the host and causing significant harm when co-infected with other diseases. Changes in the host's metabolic profiles, such as increased catabolic metabolism of amino acids and the production of immunoregulatory metabolites and their derivatives, can also influence virus replication. Mammals utilize various pathways to modulate immune responses through amino acid utilization, including increased catabolic metabolism of amino acids and the production of immunoregulatory metabolites and their derivatives, thereby limiting viral replication. Therefore, this study proposes that targeting the modulation of tryptophan metabolism may represent an effective approach to control the progression of CSF.
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Affiliation(s)
- Feifan Zhao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Yaoyao Huang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Junzhi Ji
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Xueyi Liu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Xiaowen Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Linke Zou
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Keke Wu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Xiao di Liu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Sen Zeng
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Xinyan Wang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Wenshuo Hu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Yiwan Song
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Zhimin Lu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Bolun Zhou
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Peng Li
- Wen's Foodstuffs Group Co., Ltd., Xinxing, China, Yunfu, China
| | - Weijun Wang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Mingqiu Zhao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Jinding Chen
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Lin Yi
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Shuangqi Fan
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
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6
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L’Abbate S, Kusmic C. The Protective Effect of Flavonoids in the Diet on Autophagy-Related Cardiac Impairment. Nutrients 2024; 16:2207. [PMID: 39064651 PMCID: PMC11279826 DOI: 10.3390/nu16142207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2024] [Revised: 07/07/2024] [Accepted: 07/09/2024] [Indexed: 07/28/2024] Open
Abstract
The compounds known as flavonoids, commonly found in fruits, vegetables, legumes, medicinal herbs, chocolate, and coffee and tea beverages, have been extensively researched for their impact on cardiovascular health. Flavonoids, with their demonstrated potential, have shown promising effects in regulating blood vessel function and apoptotic processes, as well as in improving lipid profiles. While their powerful antioxidant properties were initially thought to be the main reason behind these effects, recent studies have uncovered new insights into the positive effects of flavonoids on cardiovascular health, and researchers have now identified several signaling pathways and mechanisms that also play a role. Of particular interest are the studies that have highlighted the role of autophagy in maintaining the physiological functions of cardiomyocytes and protecting them from harm. Recent publications have linked the dysregulation of autophagic processes with the development of cardiomyopathies, heart failure, and other cardiovascular diseases. This review aims to present the latest, novel findings from preclinical research regarding the potential beneficial effects of flavonoids on various heart conditions associated with altered autophagy processes.
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Affiliation(s)
| | - Claudia Kusmic
- Istituto di Fisiologia Clinica, Consiglio Nazionale delle Ricerche (CNR), 56124 Pisa, Italy;
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7
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Mandic M, Paunovic V, Vucicevic L, Kosic M, Mijatovic S, Trajkovic V, Harhaji-Trajkovic L. No energy, no autophagy-Mechanisms and therapeutic implications of autophagic response energy requirements. J Cell Physiol 2024:e31366. [PMID: 38958520 DOI: 10.1002/jcp.31366] [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: 02/01/2024] [Revised: 05/29/2024] [Accepted: 06/20/2024] [Indexed: 07/04/2024]
Abstract
Autophagy is a lysosome-mediated self-degradation process of central importance for cellular quality control. It also provides macromolecule building blocks and substrates for energy metabolism during nutrient or energy deficiency, which are the main stimuli for autophagy induction. However, like most biological processes, autophagy itself requires ATP, and there is an energy threshold for its initiation and execution. We here present the first comprehensive review of this often-overlooked aspect of autophagy research. The studies in which ATP deficiency suppressed autophagy in vitro and in vivo were classified according to the energy pathway involved (oxidative phosphorylation or glycolysis). A mechanistic insight was provided by pinpointing the critical ATP-consuming autophagic events, including transcription/translation/interaction of autophagy-related molecules, autophagosome formation/elongation, autophagosome fusion with the lysosome, and lysosome acidification. The significance of energy-dependent fine-tuning of autophagic response for preserving the cell homeostasis, and potential implications for the therapy of cancer, autoimmunity, metabolic disorders, and neurodegeneration are discussed.
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Affiliation(s)
- Milos Mandic
- Institute of Microbiology and Immunology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Verica Paunovic
- Institute of Microbiology and Immunology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Ljubica Vucicevic
- Department of Neurophysiology, Institute for Biological Research "Sinisa Stankovic", National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Milica Kosic
- Institute of Microbiology and Immunology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Srdjan Mijatovic
- Clinic for Emergency Surgery, University Clinical Centre of Serbia, Belgrade, Serbia
| | - Vladimir Trajkovic
- Institute of Microbiology and Immunology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Ljubica Harhaji-Trajkovic
- Department of Neurophysiology, Institute for Biological Research "Sinisa Stankovic", National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
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8
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Zou J, Mitra K, Anees P, Oettinger D, Ramirez JR, Veetil AT, Gupta PD, Rao R, Smith JJ, Kratsios P, Krishnan Y. A DNA nanodevice for mapping sodium at single-organelle resolution. Nat Biotechnol 2024; 42:1075-1083. [PMID: 37735265 PMCID: PMC11004682 DOI: 10.1038/s41587-023-01950-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Accepted: 08/15/2023] [Indexed: 09/23/2023]
Abstract
Cellular sodium ion (Na+) homeostasis is integral to organism physiology. Our current understanding of Na+ homeostasis is largely limited to Na+ transport at the plasma membrane. Organelles may also contribute to Na+ homeostasis; however, the direction of Na+ flow across organelle membranes is unknown because organellar Na+ cannot be imaged. Here we report a pH-independent, organelle-targetable, ratiometric probe that reports lumenal Na+. It is a DNA nanodevice containing a Na+-sensitive fluorophore, a reference dye and an organelle-targeting domain. By measuring Na+ at single endosome resolution in mammalian cells and Caenorhabditis elegans, we discovered that lumenal Na+ levels in each stage of the endolysosomal pathway exceed cytosolic levels and decrease as endosomes mature. Further, we find that lysosomal Na+ levels in nematodes are modulated by the Na+/H+ exchanger NHX-5 in response to salt stress. The ability to image subcellular Na+ will unveil mechanisms of Na+ homeostasis at an increased level of cellular detail.
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Affiliation(s)
- Junyi Zou
- Department of Chemistry, The University of Chicago, Chicago, IL, USA
- Neuroscience Institute, The University of Chicago, Chicago, IL, USA
| | - Koushambi Mitra
- Department of Chemistry, The University of Chicago, Chicago, IL, USA
- Neuroscience Institute, The University of Chicago, Chicago, IL, USA
- Institute for Biophysical Dynamics, The University of Chicago, Chicago, IL, USA
| | - Palapuravan Anees
- Department of Chemistry, The University of Chicago, Chicago, IL, USA
- Neuroscience Institute, The University of Chicago, Chicago, IL, USA
- Institute for Biophysical Dynamics, The University of Chicago, Chicago, IL, USA
| | - Daphne Oettinger
- Department of Chemistry, The University of Chicago, Chicago, IL, USA
- Neuroscience Institute, The University of Chicago, Chicago, IL, USA
| | - Joseph R Ramirez
- Department of Chemistry, The University of Chicago, Chicago, IL, USA
- Neuroscience Institute, The University of Chicago, Chicago, IL, USA
| | - Aneesh Tazhe Veetil
- Department of Chemistry, The University of Chicago, Chicago, IL, USA
- Neuroscience Institute, The University of Chicago, Chicago, IL, USA
| | - Priyanka Dutta Gupta
- Department of Chemistry, The University of Chicago, Chicago, IL, USA
- Neuroscience Institute, The University of Chicago, Chicago, IL, USA
| | - Rajini Rao
- Department of Physiology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Jayson J Smith
- Neuroscience Institute, The University of Chicago, Chicago, IL, USA
- Department of Neurobiology, The University of Chicago, Chicago, IL, USA
| | - Paschalis Kratsios
- Neuroscience Institute, The University of Chicago, Chicago, IL, USA
- Department of Neurobiology, The University of Chicago, Chicago, IL, USA
| | - Yamuna Krishnan
- Department of Chemistry, The University of Chicago, Chicago, IL, USA.
- Neuroscience Institute, The University of Chicago, Chicago, IL, USA.
- Institute for Biophysical Dynamics, The University of Chicago, Chicago, IL, USA.
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9
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Mokarram P, Ghavami S. Autophagy unveiled: New horizons in health and disease. Biochim Biophys Acta Mol Basis Dis 2024:167289. [PMID: 38871032 DOI: 10.1016/j.bbadis.2024.167289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2024]
Affiliation(s)
- Pooneh Mokarram
- Autophagy Research Center, Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Saeid Ghavami
- Faculty of Medicine in Zabrze, University of Technology in Katowice, Zabrze, Poland; Research Institute of Oncology and Hematology, Cancer Care Manitoba-University of Manitoba, Winnipeg, Canada; Children Hospital Research Institute of Manitoba, University of Manitoba, Winnipeg, Canada; Department of Human Anatomy and Cell Science, College of Medicine, University of Manitoba, Winnipeg, Canada.
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10
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Liu Y, Wang Y, Zhang J, Peng Q, Wang X, Xiao X, Shi K. Nanotherapeutics targeting autophagy regulation for improved cancer therapy. Acta Pharm Sin B 2024; 14:2447-2474. [PMID: 38828133 PMCID: PMC11143539 DOI: 10.1016/j.apsb.2024.03.019] [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: 11/15/2023] [Revised: 12/29/2023] [Accepted: 01/29/2024] [Indexed: 06/05/2024] Open
Abstract
The clinical efficacy of current cancer therapies falls short, and there is a pressing demand to integrate new targets with conventional therapies. Autophagy, a highly conserved self-degradation process, has received considerable attention as an emerging therapeutic target for cancer. With the rapid development of nanomedicine, nanomaterials have been widely utilized in cancer therapy due to their unrivaled delivery performance. Hence, considering the potential benefits of integrating autophagy and nanotechnology in cancer therapy, we outline the latest advances in autophagy-based nanotherapeutics. Based on a brief background related to autophagy and nanotherapeutics and their impact on tumor progression, the feasibility of autophagy-based nanotherapeutics for cancer treatment is demonstrated. Further, emerging nanotherapeutics developed to modulate autophagy are reviewed from the perspective of cell signaling pathways, including modulation of the mammalian target of rapamycin (mTOR) pathway, autophagy-related (ATG) and its complex expression, reactive oxygen species (ROS) and mitophagy, interference with autophagosome-lysosome fusion, and inhibition of hypoxia-mediated autophagy. In addition, combination therapies in which nano-autophagy modulation is combined with chemotherapy, phototherapy, and immunotherapy are also described. Finally, the prospects and challenges of autophagy-based nanotherapeutics for efficient cancer treatment are envisioned.
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Affiliation(s)
- Yunmeng Liu
- College of Pharmacy, Nankai University, Tianjin 300350, China
| | - Yaxin Wang
- College of Pharmacy, Nankai University, Tianjin 300350, China
| | - Jincheng Zhang
- College of Pharmacy, Nankai University, Tianjin 300350, China
| | - Qikai Peng
- College of Pharmacy, Nankai University, Tianjin 300350, China
| | - Xingdong Wang
- College of Pharmacy, Nankai University, Tianjin 300350, China
| | - Xiyue Xiao
- College of Pharmacy, Nankai University, Tianjin 300350, China
| | - Kai Shi
- College of Pharmacy, Nankai University, Tianjin 300350, China
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Cao R, Sun R, Ye Y, Tian P, Huang B, Ye H, Dai L, Lan Z, Liu J, Li L. Low shear stress-induced blockage of autophagic flux impairs endothelial barrier and facilitates atherosclerosis in mice. Exp Cell Res 2024; 439:114071. [PMID: 38729336 DOI: 10.1016/j.yexcr.2024.114071] [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: 12/12/2023] [Revised: 04/25/2024] [Accepted: 04/30/2024] [Indexed: 05/12/2024]
Abstract
Atherosclerosis preferentially occurs in areas with low shear stress (LSS) and oscillatory flow. LSS has been demonstrated to correlate with the development of atherosclerosis. The sphingosine 1-phosphate receptor 1 (S1PR1), involving intravascular blood flow sensing, regulates vascular development and vascular barrier function. However, whether LSS affects atherosclerosis via regulating S1PR1 remains incompletely clear. In this study, immunostaining results of F-actin, β-catenin, and VE-cadherin indicated that LSS impaired endothelial barrier function in human umbilical vein endothelial cells (HUVECs). Western blot analysis showed that LSS resulted in blockage of autophagic flux in HUVECs. In addition, autophagy agonist Rapamycin (Rapa) antagonized LSS-induced endothelial barrier dysfunction, whereas autophagic flux inhibitor Bafilomycin A1 (BafA1) exacerbated it, indicating that LSS promoted endothelial barrier dysfunction by triggering autophagic flux blockage. Notably, gene expression analysis revealed that LSS downregulated S1PR1 expression, which was antagonized by Rapa. Selective S1PR1 antagonist W146 impaired endothelial barrier function of HUVECs under high shear stress (HSS) conditions. Moreover, our data showed that expression of GAPARAPL2, a member of autophagy-related gene 8 (Atg8) proteins, was decreased in HUVECs under LSS conditions. Autophagic flux blockage induced by GAPARAPL2 knockdown inhibited S1PR1, aggravated endothelial barrier dysfunction of HUVECs in vitro, and promoted aortic atherosclerosis in ApoE-/- mice in vivo. Our study demonstrates that autophagic flux blockage induced by LSS downregulates S1PR1 expression and impairs endothelial barrier function. GABARAPL2 inhibition is involved in LSS-induced autophagic flux blockage, which impairs endothelial barrier function via downregulation of S1PR1.
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Affiliation(s)
- Ruhao Cao
- Department of Cardiology, Guangzhou Red Cross Hospital, Jinan University, Guangzhou, 510220, China
| | - Ruxian Sun
- Department of Cardiology, Guangzhou Red Cross Hospital, Jinan University, Guangzhou, 510220, China
| | - Yuanzhi Ye
- Department of Cardiology, Laboratory of Heart Center, Zhujiang Hospital, Southern Medical University, Guangdong Provincial Key Laboratory of Cardiac Function and Microcirculation, Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Disease, Guangzhou, 510280, China
| | - Pingge Tian
- Department of Cardiology, Guangzhou Red Cross Hospital, Jinan University, Guangzhou, 510220, China
| | - Bin Huang
- Department of Cardiology, Guangzhou Red Cross Hospital, Jinan University, Guangzhou, 510220, China
| | - Haowen Ye
- Department of Cardiology, Guangzhou Red Cross Hospital, Jinan University, Guangzhou, 510220, China
| | - Libing Dai
- Guangzhou Institute of Traumatic Surgery, Guangzhou Red Cross Hospital, Jinan University, Guangzhou, 510220, China
| | - Zirong Lan
- Department of Cardiology, Laboratory of Heart Center, Zhujiang Hospital, Southern Medical University, Guangdong Provincial Key Laboratory of Cardiac Function and Microcirculation, Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Disease, Guangzhou, 510280, China
| | - Jia Liu
- VIP Medical Service Center, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510630, China.
| | - Li Li
- Department of Cardiology, Guangzhou Red Cross Hospital, Jinan University, Guangzhou, 510220, China.
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12
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Saramet V, Stan MS, Ripszky Totan A, Țâncu AMC, Voicu-Balasea B, Enasescu DS, Rus-Hrincu F, Imre M. Analysis of Gingival Fibroblasts Behaviour in the Presence of 3D-Printed versus Milled Methacrylate-Based Dental Resins-Do We Have a Winner? J Funct Biomater 2024; 15:147. [PMID: 38921521 PMCID: PMC11204847 DOI: 10.3390/jfb15060147] [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: 04/22/2024] [Revised: 05/23/2024] [Accepted: 05/24/2024] [Indexed: 06/27/2024] Open
Abstract
Computer-aided design and computer-aided manufacturing (CAD/CAM) techniques are based on either subtractive (milling prefabricated blocks) or additive (3D printing) methods, and both are used for obtaining dentistry materials. Our in vitro study aimed to investigate the behavior of human gingival fibroblasts exposed to methacrylate (MA)-based CAD/CAM milled samples in comparison with that of MA-based 3D-printed samples to better elucidate the mechanisms of cell adaptability and survival. The proliferation of human gingival fibroblasts was measured after 2 and 24 h of incubation in the presence of these samples using a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay, and the membrane integrity was assessed through the lactate dehydrogenase release. The level of reactive oxygen species, expression of autophagy-related protein LC3B-I, and detection of GSH and caspase 3/7 were evaluated by fluorescence staining. The MMP-2 levels were measured using a Milliplex MAP kit. The incubation with MA-based 3D-printed samples significantly reduced the viability, by 16% and 28% from control after 2 and 24 h, respectively. There was a 25% and 55% decrease in the GSH level from control after 24 h of incubation with the CAD/CAM milled and 3D-printed samples, respectively. In addition, higher levels of LC3B-I and MMP-2 were obtained after 24 h of incubation with the MA-based 3D samples compared to the CAD/CAM milled ones. Therefore, our results outline that the MA-CAD/CAM milled samples displayed good biocompatibility during 24-h exposure, while MA-3D resins are proper for short-term utilization (less than 24 h).
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Affiliation(s)
- Veaceslav Saramet
- Department of Complete Denture, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (V.S.); (M.I.)
| | - Miruna S. Stan
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, 91–95 Splaiul Independentei, 050095 Bucharest, Romania
| | - Alexandra Ripszky Totan
- Department of Biochemistry, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (A.R.T.); (D.S.E.); (F.R.-H.)
- The Interdisciplinary Center for Dental Research and Development, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 17–23 Plevnei Street, 020021 Bucharest, Romania;
| | - Ana Maria Cristina Țâncu
- Department of Complete Denture, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (V.S.); (M.I.)
| | - Bianca Voicu-Balasea
- The Interdisciplinary Center for Dental Research and Development, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 17–23 Plevnei Street, 020021 Bucharest, Romania;
| | - Dan Sebastian Enasescu
- Department of Biochemistry, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (A.R.T.); (D.S.E.); (F.R.-H.)
| | - Florentina Rus-Hrincu
- Department of Biochemistry, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (A.R.T.); (D.S.E.); (F.R.-H.)
| | - Marina Imre
- Department of Complete Denture, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (V.S.); (M.I.)
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13
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Zhang R, Zheng Y, Zhu Q, Gu X, Xiang B, Gu X, Xie T, Sui X. β-Elemene Reverses Gefitinib Resistance in NSCLC Cells by Inhibiting lncRNA H19-Mediated Autophagy. Pharmaceuticals (Basel) 2024; 17:626. [PMID: 38794196 PMCID: PMC11124058 DOI: 10.3390/ph17050626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Revised: 05/06/2024] [Accepted: 05/07/2024] [Indexed: 05/26/2024] Open
Abstract
Lung cancer is a leading cause of mortality worldwide, especially among Asian patients with non-small cell lung cancer (NSCLC) who have epidermal growth factor receptor (EGFR) mutations. Initially, first-generation EGFR tyrosine kinase inhibitors (TKIs) are commonly administered as the primary treatment option; however, encountering resistance to these medications poses a significant obstacle. Hence, it has become crucial to address initial resistance and ensure continued effectiveness. Recent research has focused on the role of long noncoding RNAs (lncRNAs) in tumor drug resistance, especially lncRNA H19. β-elemene, derived from Curcuma aromatic Salisb., has shown strong anti-tumor effects. However, the relationship between β-elemene, lncRNA H19, and gefitinib resistance in NSCLC is unclear. This study aims to investigate whether β-elemene can enhance the sensitivity of gefitinib-resistant NSCLC cells to gefitinib and to elucidate its mechanism of action. The impact of gefitinib and β-elemene on cell viability was evaluated using the cell counting kit-8 (CCK8) assay. Furthermore, western blotting and qRT-PCR analysis were employed to determine the expression levels of autophagy-related proteins and genes, respectively. The influence on cellular proliferation was gauged through a colony-formation assay, and apoptosis induction was quantified via flow cytometry. Additionally, the tumorigenic potential in vivo was assessed using a xenograft model in nude mice. The expression levels of LC3B, EGFR, and Rab7 proteins were examined through immunofluorescence. Our findings elucidate that the resistance to gefitinib is intricately linked with the dysregulation of autophagy and the overexpression of lncRNA H19. The synergistic administration of β-elemene and gefitinib markedly attenuated the proliferative capacity of resistant cells, expedited apoptotic processes, and inhibited the in vivo proliferation of lung cancer. Notably, β-elemene profoundly diminished the expression of lncRNA H19 and curtailed autophagic activity in resistant cells, thereby bolstering their responsiveness to gefitinib. Moreover, β-elemene disrupted the Rab7-facilitated degradation pathway of EGFR, facilitating its repositioning to the plasma membrane. β-elemene emerges as a promising auxiliary therapeutic for circumventing gefitinib resistance in NSCLC, potentially through the regulation of lncRNA H19-mediated autophagy. The participation of Rab7 in this dynamic unveils novel insights into the resistance mechanisms operative in lung cancer, paving the way for future therapeutic innovations.
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Affiliation(s)
- Ruonan Zhang
- Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute and School of Basic Medical Sciences, Central South University, Changsha 410008, China; (R.Z.); (B.X.)
- School of Pharmacy, Hangzhou Normal University, Hangzhou 311121, China; (Y.Z.); (Q.Z.); (X.G.); (T.X.)
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
| | - Yintao Zheng
- School of Pharmacy, Hangzhou Normal University, Hangzhou 311121, China; (Y.Z.); (Q.Z.); (X.G.); (T.X.)
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 311402, China
| | - Qianru Zhu
- School of Pharmacy, Hangzhou Normal University, Hangzhou 311121, China; (Y.Z.); (Q.Z.); (X.G.); (T.X.)
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
| | - Xiaoqing Gu
- School of Pharmacy, Hangzhou Normal University, Hangzhou 311121, China; (Y.Z.); (Q.Z.); (X.G.); (T.X.)
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
| | - Bo Xiang
- Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute and School of Basic Medical Sciences, Central South University, Changsha 410008, China; (R.Z.); (B.X.)
| | - Xidong Gu
- Department of Breast Surgery, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou 310002, China
| | - Tian Xie
- School of Pharmacy, Hangzhou Normal University, Hangzhou 311121, China; (Y.Z.); (Q.Z.); (X.G.); (T.X.)
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
| | - Xinbing Sui
- School of Pharmacy, Hangzhou Normal University, Hangzhou 311121, China; (Y.Z.); (Q.Z.); (X.G.); (T.X.)
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
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14
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Ho AN, Kiesel VA, Gates CE, Brosnan BH, Connelly SP, Glenny EM, Cozzo AJ, Hursting SD, Coleman MF. Exogenous Metabolic Modulators Improve Response to Carboplatin in Triple-Negative Breast Cancer. Cells 2024; 13:806. [PMID: 38786030 PMCID: PMC11119195 DOI: 10.3390/cells13100806] [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: 03/22/2024] [Revised: 05/06/2024] [Accepted: 05/07/2024] [Indexed: 05/25/2024] Open
Abstract
Triple-negative breast cancer (TNBC) lacks targeted therapies, leaving cytotoxic chemotherapy as the current standard treatment. However, chemotherapy resistance remains a major clinical challenge. Increased insulin-like growth factor 1 signaling can potently blunt chemotherapy response, and lysosomal processes including the nutrient scavenging pathway autophagy can enable cancer cells to evade chemotherapy-mediated cell death. Thus, we tested whether inhibition of insulin receptor/insulin-like growth factor 1 receptor with the drug BMS-754807 and/or lysosomal disruption with hydroxychloroquine (HCQ) could sensitize TNBC cells to the chemotherapy drug carboplatin. Using in vitro studies in multiple TNBC cell lines, in concert with in vivo studies employing a murine syngeneic orthotopic transplant model of TNBC, we show that BMS-754807 and HCQ each sensitized TNBC cells and tumors to carboplatin and reveal that exogenous metabolic modulators may work synergistically with carboplatin as indicated by Bliss analysis. Additionally, we demonstrate the lack of overt in vivo toxicity with our combination regimens and, therefore, propose that metabolic targeting of TNBC may be a safe and effective strategy to increase sensitivity to chemotherapy. Thus, we conclude that the use of exogenous metabolic modulators, such as BMS-754807 or HCQ, in combination with chemotherapy warrants additional study as a strategy to improve therapeutic responses in women with TNBC.
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Affiliation(s)
- Alyssa N. Ho
- Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Violet A. Kiesel
- Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Claire E. Gates
- Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
- Department of Pharmacology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Bennett H. Brosnan
- Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Scott P. Connelly
- Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Elaine M. Glenny
- Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Alyssa J. Cozzo
- Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Stephen D. Hursting
- Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
- Nutrition Research Institute, University of North Carolina at Chapel Hill, Kannapolis, NC 28081, USA
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Michael Francis Coleman
- Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
- Nutrition Research Institute, University of North Carolina at Chapel Hill, Kannapolis, NC 28081, USA
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15
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Saukko-Paavola AJ, Klemm RW. Remodelling of mitochondrial function by import of specific lipids at multiple membrane-contact sites. FEBS Lett 2024; 598:1274-1291. [PMID: 38311340 DOI: 10.1002/1873-3468.14813] [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: 11/29/2023] [Revised: 12/14/2023] [Accepted: 12/28/2023] [Indexed: 02/08/2024]
Abstract
Organelles form physical and functional contact between each other to exchange information, metabolic intermediates, and signaling molecules. Tethering factors and contact site complexes bring partnering organelles into close spatial proximity to establish membrane contact sites (MCSs), which specialize in unique functions like lipid transport or Ca2+ signaling. Here, we discuss how MCSs form dynamic platforms that are important for lipid metabolism. We provide a perspective on how import of specific lipids from the ER and other organelles may contribute to remodeling of mitochondria during nutrient starvation. We speculate that mitochondrial adaptation is achieved by connecting several compartments into a highly dynamic organelle network. The lipid droplet appears to be a central hub in coordinating the function of these organelle neighborhoods.
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Affiliation(s)
| | - Robin W Klemm
- Department of Physiology, Anatomy and Genetics, University of Oxford, UK
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16
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Obaseki E, Adebayo D, Bandyopadhyay S, Hariri H. Lipid droplets and fatty acid-induced lipotoxicity: in a nutshell. FEBS Lett 2024; 598:1207-1214. [PMID: 38281809 PMCID: PMC11126361 DOI: 10.1002/1873-3468.14808] [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: 10/09/2023] [Revised: 12/02/2023] [Accepted: 01/04/2024] [Indexed: 01/30/2024]
Abstract
Lipid droplets (LDs) are fat storage organelles that are conserved from bacteria to humans. LDs are broken down to supply cells with fatty acids (FAs) that can be used as an energy source or membrane synthesis. An overload of FAs disrupts cellular functions and causes lipotoxicity. Thus, by acting as hubs for storing excess fat, LDs prevent lipotoxicity and preserve cellular homeostasis. LD synthesis and turnover have to be precisely regulated to maintain a balanced lipid distribution and allow for cellular adaptation during stress. Here, we discuss how prolonged exposure to excess lipids affects cellular functions, and the roles of LDs in buffering cellular stress focusing on lipotoxicity.
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Affiliation(s)
- Eseiwi Obaseki
- Department of Biological Sciences, Wayne State University, Detroit, MI, 48202 USA
| | - Daniel Adebayo
- Department of Biological Sciences, Wayne State University, Detroit, MI, 48202 USA
| | - Sumit Bandyopadhyay
- Department of Biological Sciences, Wayne State University, Detroit, MI, 48202 USA
| | - Hanaa Hariri
- Department of Biological Sciences, Wayne State University, Detroit, MI, 48202 USA
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17
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Xia Q, Zhao Y, Dong H, Mao Q, Zhu L, Xia J, Weng Z, Liao W, Hu Z, Yi J, Feng S, Jiang Y, Xin Z. Progress in the study of molecular mechanisms of intervertebral disc degeneration. Biomed Pharmacother 2024; 174:116593. [PMID: 38626521 DOI: 10.1016/j.biopha.2024.116593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Revised: 04/01/2024] [Accepted: 04/10/2024] [Indexed: 04/18/2024] Open
Abstract
Degenerative intervertebral disc disease (IVDD) is one of the main spinal surgery, conditions, which markedly increases the incidence of low back pain and deteriorates the patient's quality of life, and it imposes significant social and economic burdens. The molecular pathology of IVDD is highly complex and multilateral however still not ompletely understood. New findings indicate that IVDD is closely associated with inflammation, oxidative stress, cell injury and extracellular matrix metabolismdysregulation. Symptomatic management is the main therapeutic approach adopted for IVDD, but it fails to address the basic pathological changes and the causes of the disease. However, research is still focusing on molecular aspects in terms of gene expression, growth factors and cell signaling pathways in an attempt to identify specific molecular targets for IVDD treatment. The paper summarizes the most recent achievements in molecularunderstanding of the pathogenesis of IVDD and gives evidence-based recommendations for clinical practice.
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Affiliation(s)
- Qiuqiu Xia
- Department of Orthopedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi Guizhou 563000, China; First School of Clinical Medicine, Zun yi Medical University, Zunyi 563000, China
| | - Yan Zhao
- Department of Orthopedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi Guizhou 563000, China; First School of Clinical Medicine, Zun yi Medical University, Zunyi 563000, China
| | - Huaize Dong
- Department of Orthopedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi Guizhou 563000, China; First School of Clinical Medicine, Zun yi Medical University, Zunyi 563000, China
| | - Qiming Mao
- Department of Orthopedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi Guizhou 563000, China; First School of Clinical Medicine, Zun yi Medical University, Zunyi 563000, China
| | - Lu Zhu
- Department of Orthopedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi Guizhou 563000, China; First School of Clinical Medicine, Zun yi Medical University, Zunyi 563000, China
| | - Jiyue Xia
- Department of Orthopedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi Guizhou 563000, China; First School of Clinical Medicine, Zun yi Medical University, Zunyi 563000, China
| | - Zijing Weng
- Department of Orthopedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi Guizhou 563000, China; First School of Clinical Medicine, Zun yi Medical University, Zunyi 563000, China
| | - Wenbo Liao
- Department of Orthopedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi Guizhou 563000, China
| | - Zongyue Hu
- Department of Pain Rehabilitation, Affiliated Sinopharm Gezhouba Central Hospital, Third Clinical Medical College of Three Gorges University, Yichang, Hubei Province 443003, China
| | - Jiangbi Yi
- Department of Orthopedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi Guizhou 563000, China; First School of Clinical Medicine, Zun yi Medical University, Zunyi 563000, China
| | - Shuai Feng
- Department of Orthopedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi Guizhou 563000, China; First School of Clinical Medicine, Zun yi Medical University, Zunyi 563000, China
| | - Youhong Jiang
- Department of Orthopedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi Guizhou 563000, China; First School of Clinical Medicine, Zun yi Medical University, Zunyi 563000, China
| | - Zhijun Xin
- Department of Orthopedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi Guizhou 563000, China; Institut Curie, PSL Research University, CNRS UMR3244, Dynamics of Genetic Information, Sorbonne Université, Paris 75005, France.
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18
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Liu Z, Yang L, Wu W, Chen Z, Xie Z, Shi D, Cai N, Zhuo S. Prognosis and therapeutic significance of IGF-1R-related signaling pathway gene signature in glioma. Front Cell Dev Biol 2024; 12:1375030. [PMID: 38665430 PMCID: PMC11043541 DOI: 10.3389/fcell.2024.1375030] [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: 01/23/2024] [Accepted: 03/28/2024] [Indexed: 04/28/2024] Open
Abstract
Background Glioma is the most common cancer of the central nervous system with poor therapeutic response and clinical prognosis. Insulin-like growth factor 1 receptor (IGF-1R) signaling is implicated in tumor development and progression and induces apoptosis of cancer cells following functional inhibition. However, the relationship between the IGF-1R-related signaling pathway genes and glioma prognosis or immunotherapy/chemotherapy is poorly understood. Methods LASSO-Cox regression was employed to develop a 16-gene risk signature in the TCGA-GBMLGG cohort, and all patients with glioma were divided into low-risk and high-risk subgroups. The relationships between the risk signature and the tumor immune microenvironment (TIME), immunotherapy response, and chemotherapy response were then analyzed. Immunohistochemistry was used to evaluate the HSP90B1 level in clinical glioma tissue. Results The gene risk signature yielded superior predictive efficacy in prognosis (5-year area under the curve: 0.875) and can therefore serve as an independent prognostic indicator in patients with glioma. The high-risk subgroup exhibited abundant immune infltration and elevated immune checkpoint gene expression within the TIME. Subsequent analysis revealed that patients in the high-risk subgroup benefited more from chemotherapy. Immunohistochemical analysis confirmed that HSP90B1 was overexpressed in glioma, with significantly higher levels observed in glioblastoma than in astrocytoma or oligodendrocytoma. Conclusion The newly identified 16-gene risk signature demonstrates a robust predictive capacity for glioma prognosis and plays a pivotal role in the TIME, thereby offering valuable insights for the exploration of novel biomarkers and targeted therapeutics.
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Affiliation(s)
- Zhen Liu
- Department of Neurosurgery, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Liangwang Yang
- Department of Neurosurgery, First Affiliated Hospital of Hainan Medical University, Haikou, Hainan, China
| | - Wenqi Wu
- Department of Neurology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Zejun Chen
- Department of Neurosurgery, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Zhengxing Xie
- Department of Neurosurgery, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Daoming Shi
- Department of General Surgery, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Ning Cai
- Department of Neurosurgery, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Shenghua Zhuo
- Department of Neurosurgery, First Affiliated Hospital of Hainan Medical University, Haikou, Hainan, China
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19
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Song C, Hu P, Peng R, Li F, Fang Z, Xu Y. Bioenergetic dysfunction in the pathogenesis of intervertebral disc degeneration. Pharmacol Res 2024; 202:107119. [PMID: 38417775 DOI: 10.1016/j.phrs.2024.107119] [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: 01/04/2024] [Revised: 02/16/2024] [Accepted: 02/24/2024] [Indexed: 03/01/2024]
Abstract
Intervertebral disc (IVD) degeneration is a frequent cause of low back pain and is the most common cause of disability. Treatments for symptomatic IVD degeneration, including conservative treatments such as analgesics, physical therapy, anti-inflammatories and surgeries, are aimed at alleviating neurological symptoms. However, there are no effective treatments to prevent or delay IVD degeneration. Previous studies have identified risk factors for IVD degeneration such as aging, inflammation, genetic factors, mechanical overload, nutrient deprivation and smoking, but metabolic dysfunction has not been highlighted. IVDs are the largest avascular structures in the human body and determine the hypoxic and glycolytic features of nucleus pulposus (NP) cells. Accumulating evidence has demonstrated that intracellular metabolic dysfunction is associated with IVD degeneration, but a comprehensive review is lacking. Here, by reviewing the physiological features of IVDs, pathological processes and metabolic changes associated with IVD degeneration and the functions of metabolic genes in IVDs, we highlight that glycolytic pathway and intact mitochondrial function are essential for IVD homeostasis. In degenerated NPs, glycolysis and mitochondrial function are downregulated. Boosting glycolysis such as HIF1α overexpression protects against IVD degeneration. Moreover, the correlations between metabolic diseases such as diabetes, obesity and IVD degeneration and their underlying molecular mechanisms are discussed. Hyperglycemia in diabetic diseases leads to cell senescence, the senescence-associated phenotype (SASP), apoptosis and catabolism of extracellualr matrix in IVDs. Correcting the global metabolic disorders such as insulin or GLP-1 receptor agonist administration is beneficial for diabetes associated IVD degeneration. Overall, we summarized the recent progress of investigations on metabolic contributions to IVD degeneration and provide a new perspective that correcting metabolic dysfunction may be beneficial for treating IVD degeneration.
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Affiliation(s)
- Chao Song
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, China
| | - Peixuan Hu
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, China
| | - Renpeng Peng
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, China
| | - Feng Li
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, China.
| | - Zhong Fang
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, China.
| | - Yong Xu
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, China.
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20
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Pan Y, Liu J, Wang D, Zhou P, Chen T, Tang Y, Ji C. DADS Inhibits the Proliferation of MDCC-MSB-1 Cells by Inducing Autophagy via the MEK/ERK Signalling Pathway. Cell Biochem Biophys 2024; 82:271-278. [PMID: 38214811 DOI: 10.1007/s12013-023-01214-4] [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: 07/18/2023] [Accepted: 12/26/2023] [Indexed: 01/13/2024]
Abstract
Diallyl disulfide (DADS) is effective at suppressing tumour cell growth and proliferation. This study verified the morphology and growth activity of MDCC-MSB-1 cells by using an MTT assay to detect the effect of DADS on the proliferation of MDCC-MSB-1 cells and a CCK8 assay to detect the effect of DADS on the viability and proliferation of MDCC-MSB-1 cells. We found that the viability and proliferation of MDCC-MSB-1 cells decreased with increasing DADS concentrations. MDC staining and Western blotting were used to analyse autophagy, the associated protein LC3 and the MEK/ERK pathway proteins MEK and ERK and to investigate changes in cellular autophagy based on cell morphology and molecular biology. With increasing concentrations of DADS, MDCC-MSB-1 cell autophagy increased in a gradient manner. Additionally, the conversion of the autophagy marker protein LC3-I increased with increasing drug concentrations, and the relative expression of LC3-II steadily increased, as did the expression of key protein components of the MEK/ERK signalling pathway, including P-MEK1/2 and P-ERK1/2. These results suggest that DADS induces autophagy through the MEK/ERK pathway, thereby inhibiting the proliferation of MDCC-MSB-1 cells.
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Affiliation(s)
- Yanying Pan
- College of Veterinary Medicine, Hunan Agricultural University, Changsha, 410128, China
- Hunan Engineering Technology Research Center of Veterinary Drugs, Hunan Agricultural University, Changsha, 410128, China
| | - Jianying Liu
- College of Veterinary Medicine, Hunan Agricultural University, Changsha, 410128, China
- Hunan Engineering Technology Research Center of Veterinary Drugs, Hunan Agricultural University, Changsha, 410128, China
| | - Dongliang Wang
- College of Veterinary Medicine, Hunan Agricultural University, Changsha, 410128, China
- Hunan Engineering Technology Research Center of Veterinary Drugs, Hunan Agricultural University, Changsha, 410128, China
| | - Pengfei Zhou
- College of Veterinary Medicine, Hunan Agricultural University, Changsha, 410128, China
- Hunan Engineering Technology Research Center of Veterinary Drugs, Hunan Agricultural University, Changsha, 410128, China
| | - Tao Chen
- College of Veterinary Medicine, Hunan Agricultural University, Changsha, 410128, China
- Hunan Engineering Technology Research Center of Veterinary Drugs, Hunan Agricultural University, Changsha, 410128, China
| | - Yulong Tang
- Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan, Changsha, 410125, China
| | - Chunxiao Ji
- College of Veterinary Medicine, Hunan Agricultural University, Changsha, 410128, China.
- Hunan Engineering Technology Research Center of Veterinary Drugs, Hunan Agricultural University, Changsha, 410128, China.
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21
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Ren Q, Sun Q, Fu J. Dysfunction of autophagy in high-fat diet-induced non-alcoholic fatty liver disease. Autophagy 2024; 20:221-241. [PMID: 37700498 PMCID: PMC10813589 DOI: 10.1080/15548627.2023.2254191] [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: 05/01/2023] [Accepted: 08/24/2023] [Indexed: 09/14/2023] Open
Abstract
ABBREVIATIONS ACOX1: acyl-CoA oxidase 1; ADH5: alcohol dehydrogenase 5 (class III), chi polypeptide; ADIPOQ: adiponectin, C1Q and collagen domain containing; ATG: autophagy related; BECN1: beclin 1; CRTC2: CREB regulated transcription coactivator 2; ER: endoplasmic reticulum; F2RL1: F2R like trypsin receptor 1; FA: fatty acid; FOXO1: forkhead box O1; GLP1R: glucagon like peptide 1 receptor; GRK2: G protein-coupled receptor kinase 2; GTPase: guanosine triphosphatase; HFD: high-fat diet; HSCs: hepatic stellate cells; HTRA2: HtrA serine peptidase 2; IRGM: immunity related GTPase M; KD: knockdown; KDM6B: lysine demethylase 6B; KO: knockout; LAMP2: lysosomal associated membrane protein 2; LAP: LC3-associated phagocytosis; LDs: lipid droplets; Li KO: liver-specific knockout; LSECs: liver sinusoidal endothelial cells; MAP1LC3/LC3: microtubule associated protein 1 light chain 3; MAP3K5: mitogen-activated protein kinase kinase kinase 5; MED1: mediator complex subunit 1; MTOR: mechanistic target of rapamycin kinase; MTORC1: mechanistic target of rapamycin complex 1; NAFLD: non-alcoholic fatty liver disease; NASH: non-alcoholic steatohepatitis; NFE2L2: NFE2 like bZIP transcription factor 2; NOS3: nitric oxide synthase 3; NR1H3: nuclear receptor subfamily 1 group H member 3; OA: oleic acid; OE: overexpression; OSBPL8: oxysterol binding protein like 8; PA: palmitic acid; RUBCNL: rubicon like autophagy enhancer; PLIN2: perilipin 2; PLIN3: perilipin 3; PPARA: peroxisome proliferator activated receptor alpha; PRKAA2/AMPK: protein kinase AMP-activated catalytic subunit alpha 2; RAB: member RAS oncogene family; RPTOR: regulatory associated protein of MTOR complex 1; SCD: stearoyl-CoA desaturase; SIRT1: sirtuin 1; SIRT3: sirtuin 3; SNARE: soluble N-ethylmaleimide-sensitive factor attachment protein receptor; SQSTM1/p62: sequestosome 1; SREBF1: sterol regulatory element binding transcription factor 1;SREBF2: sterol regulatory element binding transcription factor 2; STING1: stimulator of interferon response cGAMP interactor 1; STX17: syntaxin 17; TAGs: triacylglycerols; TFEB: transcription factor EB; TP53/p53: tumor protein p53; ULK1: unc-51 like autophagy activating kinase 1; VMP1: vacuole membrane protein 1.
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Affiliation(s)
- Qiannan Ren
- Department of Endocrinology, Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
| | - Qiming Sun
- International Institutes of Medicine, The Fourth Affiliated Hospital of Zhejiang University School of Medicine, Yiwu, Zhejiang, China
- Department of Biochemistry, and Department of Cardiology of Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Junfen Fu
- Department of Endocrinology, Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
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22
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Ida-Yonemochi H, Otsu K, Irié T, Ohazama A, Harada H, Ohshima H. Loss of Autophagy Disrupts Stemness of Ameloblast-Lineage Cells in Aging. J Dent Res 2024; 103:156-166. [PMID: 38058147 DOI: 10.1177/00220345231209931] [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: 12/08/2023] Open
Abstract
Autophagy is one of the intracellular degradation pathways and maintains cellular homeostasis, regulating the stress response, cell proliferation, and signal transduction. To elucidate the role of autophagy in the maintenance of dental epithelial stem cells and the subsequent enamel formation, we analyzed autophagy-deficient mice in epithelial cells (Atg7f/f;KRT14-Cre mice), focusing on the influence of aging and stress environments. We also performed in vitro cell and organ culture experiments with an autophagy inhibitor. In young Atg7f/f;KRT14-Cre mice, morphological change was not obvious in maxillary incisors, except for the remarkable cell death in the stratum intermedium of the transitional stage. However, under stress conditions of hyperglycemia, the incisor color changed to white in diabetes Atg7f/f;KRT14-Cre mice. Regarding dental epithelial stem cells, the shape of the apical bud region of the incisor became irregular with age, and odontoma was formed in aged Atg7f/f;KRT14-Cre mice. In addition, the shape of apical bud culture cells of Atg7f/f;KRT14-Cre mice became irregular and enlarged atypically, with epigenetic changes during culture, suggesting that autophagy deficiency may induce tumorigenesis in dental epithelial cells. The epigenetic change and upregulation of p21 expression were induced by autophagy inhibition in vivo and in vitro. These findings suggest that autophagy is important for the regulation of stem cell maintenance, proliferation, and differentiation of ameloblast-lineage cells, and an autophagy disorder may induce tumorigenesis in odontogenic epithelial cells.
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Affiliation(s)
- H Ida-Yonemochi
- Division of Anatomy and Cell Biology of the Hard Tissue, Department of Tissue Regeneration and Reconstruction, Niigata University Graduate School of Medical and Dental Sciences, Chuo-ku, Niigata, Japan
| | - K Otsu
- Division of Developmental Biology & Regenerative Medicine, Department of Anatomy, Iwate Medical University, Yahaba-cho, Shiwa-gun, Iwate, Japan
| | - T Irié
- Division of Anatomical and Cellular Pathology, Department of Pathology, Iwate Medical University, Yahaba-cho, Shiwa-gun, Iwate, Japan
| | - A Ohazama
- Division of Oral Anatomy, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Chuo-ku, Niigata, Japan
| | - H Harada
- Division of Developmental Biology & Regenerative Medicine, Department of Anatomy, Iwate Medical University, Yahaba-cho, Shiwa-gun, Iwate, Japan
| | - H Ohshima
- Division of Anatomy and Cell Biology of the Hard Tissue, Department of Tissue Regeneration and Reconstruction, Niigata University Graduate School of Medical and Dental Sciences, Chuo-ku, Niigata, Japan
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23
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Pangarkar M, Wagh U, Pathak A. Autophagy indicators in oral squamous cell carcinoma. Pathology 2024; 56:59-64. [PMID: 37981514 DOI: 10.1016/j.pathol.2023.08.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 06/26/2023] [Accepted: 08/25/2023] [Indexed: 11/21/2023]
Abstract
Autophagy plays an important role in maintaining cellular homeostasis. Dysregulation of autophagy has been linked to a number of diseases, including cancer. We retrospectively evaluated immunohistochemical expression of the autophagy markers LC3B and p62 and the autophagy regulator mTOR as an indicator of autophagy in 100 surgically resected primary oral squamous cell carcinoma (OSCC) samples and sought associations with various clinicopathological factors. The expression of all three proteins was significantly higher in malignant squamous cells than in benign squamous cells in the free mucosal margin adjacent to the OSCC. Male sex, higher tumour (T) stage, node (N) stage and tumour, node, metastasis (TNM) stage were significantly associated with high marker expression; age and histological grade showed no significant association. LC3B, p62 and mTOR expression were positively correlated with one another in OSCCs, and the correlation was significant for LC3B and mTOR as well as for LC3B and p62. Disease-free survival showed an inverse correlation with high mTOR expression. Our data suggest that autophagy inhibitors and mTOR inhibitors may have a therapeutic role in the treatment of OSCCs.
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Affiliation(s)
| | - Uttara Wagh
- National Cancer Institute, Nagpur, Maharashtra, India
| | - Anand Pathak
- National Cancer Institute, Nagpur, Maharashtra, India
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24
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Bottillo I, Laino L, Azzarà A, Lintas C, Cassano I, Di Lazzaro V, Ursini F, Motolese F, Bargiacchi S, Formicola D, Grammatico P, Gurrieri F. A pathogenic variant in the FLCN gene presenting with pure dementia: is autophagy at the intersection between neurodegeneration and cancer? Front Neurosci 2024; 17:1304080. [PMID: 38249578 PMCID: PMC10796570 DOI: 10.3389/fnins.2023.1304080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 12/08/2023] [Indexed: 01/23/2024] Open
Abstract
Introduction Folliculin, encoded by FLCN gene, plays a role in the mTORC1 autophagy cascade and its alterations are responsible for the Birt-Hogg-Dubé (BHD) syndrome, characterized by follicle hamartomas, kidney tumors and pneumothorax. Patient and results We report a 74-years-old woman diagnosed with dementia and carrying a FLCN alteration in absence of any sign of BHD. She also carried an alteration of MAT1A gene, which is also implicated in the regulation of mTORC1. Discussion The MAT1A variant could have prevented the development of a FLCN-related oncological phenotype. Conversely, our patient presented with dementia that, to date, has yet to be documented in BHD. Folliculin belongs to the DENN family proteins, which includes C9orf72 whose alteration has been associated to neurodegeneration. The folliculin perturbation could affect the C9orf72 activity and our patient could represent the first human model of a relationship between FLCN and C9orf72 across the path of autophagy.
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Affiliation(s)
- Irene Bottillo
- Division of Medical Genetics, Department of Experimental Medicine, San Camillo-Forlanini Hospital, Sapienza University, Rome, Italy
| | - Luigi Laino
- Division of Medical Genetics, Department of Experimental Medicine, San Camillo-Forlanini Hospital, Sapienza University, Rome, Italy
| | - Alessia Azzarà
- Research Unit of Medical Genetics, Department of Medicine and Surgery, Università Campus Bio-Medico di Roma, Rome, Italy
| | - Carla Lintas
- Research Unit of Medical Genetics, Department of Medicine and Surgery, Università Campus Bio-Medico di Roma, Rome, Italy
| | - Ilaria Cassano
- Research Unit of Medical Genetics, Department of Medicine and Surgery, Università Campus Bio-Medico di Roma, Rome, Italy
| | - Vincenzo Di Lazzaro
- Department of Medicine and Surgery, Unit of Neurology, Neurophysiology, Neurobiology and Psychiatry, Università Campus Bio-Medico di Roma, Rome, Italy
- Unit of Neurology, Fondazione Policlinico Universitario Campus Bio-Medico, Rome, Italy
| | - Francesca Ursini
- Unit of Neurology, Fondazione Policlinico Universitario Campus Bio-Medico, Rome, Italy
| | - Francesco Motolese
- Department of Medicine and Surgery, Unit of Neurology, Neurophysiology, Neurobiology and Psychiatry, Università Campus Bio-Medico di Roma, Rome, Italy
- Unit of Neurology, Fondazione Policlinico Universitario Campus Bio-Medico, Rome, Italy
| | - Simone Bargiacchi
- Division of Medical Genetics, Department of Experimental Medicine, San Camillo-Forlanini Hospital, Sapienza University, Rome, Italy
| | - Daniela Formicola
- Division of Medical Genetics, Department of Experimental Medicine, San Camillo-Forlanini Hospital, Sapienza University, Rome, Italy
| | - Paola Grammatico
- Division of Medical Genetics, Department of Experimental Medicine, San Camillo-Forlanini Hospital, Sapienza University, Rome, Italy
| | - Fiorella Gurrieri
- Research Unit of Medical Genetics, Department of Medicine and Surgery, Università Campus Bio-Medico di Roma, Rome, Italy
- Operative Research Unit of Medical Genetics, Fondazione Policlinico Universitario Campus Bio-Medico, Rome, Italy
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25
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Dai S, Feng Y, Lu C, Zhang H, Ma W, Xie W, Wu X, Luo P, Zhang L, Fei F, Fei Z, Li X. Impairment of Autophagic Flux After Hypobaric Hypoxia Potentiates Oxidative Stress and Cognitive Function Disturbances in Mice. Neurosci Bull 2024; 40:35-49. [PMID: 37608137 PMCID: PMC10774493 DOI: 10.1007/s12264-023-01099-6] [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: 11/20/2022] [Accepted: 06/01/2023] [Indexed: 08/24/2023] Open
Abstract
Acute hypobaric hypoxic brain damage is a potentially fatal high-altitude sickness. Autophagy plays a critical role in ischemic brain injury, but its role in hypobaric hypoxia (HH) remains unknown. Here we used an HH chamber to demonstrate that acute HH exposure impairs autophagic activity in both the early and late stages of the mouse brain, and is partially responsible for HH-induced oxidative stress, neuronal loss, and brain damage. The autophagic agonist rapamycin only promotes the initiation of autophagy. By proteome analysis, a screen showed that protein dynamin2 (DNM2) potentially regulates autophagic flux. Overexpression of DNM2 significantly increased the formation of autolysosomes, thus maintaining autophagic flux in combination with rapamycin. Furthermore, the enhancement of autophagic activity attenuated oxidative stress and neurological deficits after HH exposure. These results contribute to evidence supporting the conclusion that DNM2-mediated autophagic flux represents a new therapeutic target in HH-induced brain damage.
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Affiliation(s)
- Shuhui Dai
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710000, China
- National Translational Science Center for Molecular Medicine and Department of Cell Biology, Fourth Military Medical University, Xi'an, 710000, China
| | - Yuan Feng
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710000, China
| | - Chuanhao Lu
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710000, China
| | - Hongchen Zhang
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710000, China
| | - Wenke Ma
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710000, China
- Department of Neurosurgery, The Central Hospital of Baoji, Baoji, 721000, China
| | - Wenyu Xie
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710000, China
| | - Xiuquan Wu
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710000, China
| | - Peng Luo
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710000, China
| | - Lei Zhang
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710000, China
| | - Fei Fei
- Department of Ophthalmology, Xijing Hospital, Fourth Military Medical University, Xi'an, 710000, China
| | - Zhou Fei
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710000, China.
| | - Xia Li
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710000, China.
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26
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Cheng X, Xia T, Sun X, Liang G, Liu X, Liang G. Atg4B and Cathepsin B-Triggered in Situ Luciferin Formation for Precise Cancer Autophagy Bioluminescence Imaging. ACS CENTRAL SCIENCE 2023; 9:2251-2256. [PMID: 38161373 PMCID: PMC10755845 DOI: 10.1021/acscentsci.3c00696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 09/10/2023] [Accepted: 10/23/2023] [Indexed: 01/03/2024]
Abstract
Autophagy plays a crucial role in tumorigenesis and progression, but current approaches to visualize it in vivo show limited precision due to their single-analyte-responsive mode. Hence, by simultaneously employing dual autophagy enzymes Atg4B and cathepsin B to trigger the in situ formation of luciferin, we herein propose a strategy for precise autophagy bioluminescence imaging. An Atg4B-responsive peptide Ac-Thr-Phe-Gly-d-Cys (TFGC) and a cathepsin B-activatable compound Ac-Lys-Gly-Arg-Arg-CBT (KGRR-CBT) were rationally designed. During tumor autophagy, these two compounds were uptaken by cancer cells and cleaved by their corresponding enzymes to yield d-cysteine and 2-cyano-6-aminobenzothiazole, respectively, which underwent a CBT-Cys click reaction to yield d-aminoluciferin, turning the bioluminescence "on". The responsiveness of these two compounds toward the two enzymes was tested in vitro, and the ability to turn bioluminescence "on" was validated in living cancer cells and in vivo. We anticipate that our precise autophagy imaging strategy could be further applied for the diagnosis of autophagy-related diseases in the near future.
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Affiliation(s)
| | | | - Xianbao Sun
- State Key Laboratory of Digital Medical
Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Guowei Liang
- State Key Laboratory of Digital Medical
Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Xiaoyang Liu
- State Key Laboratory of Digital Medical
Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Gaolin Liang
- State Key Laboratory of Digital Medical
Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
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27
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Knupp J, Pletan ML, Arvan P, Tsai B. Autophagy of the ER: the secretome finds the lysosome. FEBS J 2023; 290:5656-5673. [PMID: 37920925 PMCID: PMC11044768 DOI: 10.1111/febs.16986] [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: 08/03/2023] [Revised: 09/20/2023] [Accepted: 10/23/2023] [Indexed: 11/04/2023]
Abstract
Lysosomal degradation of the endoplasmic reticulum (ER) and its components through the autophagy pathway has emerged as a major regulator of ER proteostasis. Commonly referred to as ER-phagy and ER-to-lysosome-associated degradation (ERLAD), how the ER is targeted to the lysosome has been recently clarified by a growing number of studies. Here, we summarize the discoveries of the molecular components required for lysosomal degradation of the ER and their proposed mechanisms of action. Additionally, we discuss how cells employ these machineries to create the different routes of ER-lysosome-associated degradation. Further, we review the role of ER-phagy in viral infection pathways, as well as the implication of ER-phagy in human disease. In sum, we provide a comprehensive overview of the current field of ER-phagy.
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Affiliation(s)
- Jeffrey Knupp
- Department of Cell and Developmental Biology, University of Michigan Medical School, Ann Arbor, MI, USA
- Cellular and Molecular Biology Program, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Madison L Pletan
- Department of Cell and Developmental Biology, University of Michigan Medical School, Ann Arbor, MI, USA
- Cellular and Molecular Biology Program, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Peter Arvan
- Division of Metabolism, Endocrinology & Diabetes, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Billy Tsai
- Department of Cell and Developmental Biology, University of Michigan Medical School, Ann Arbor, MI, USA
- Cellular and Molecular Biology Program, University of Michigan Medical School, Ann Arbor, MI, USA
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28
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Cerrato G, Alvarez-Lucena C, Sauvat A, Hu Y, Forveille S, Chen G, Durand S, Aprahamian F, Leduc M, Motiño O, Boscá L, Xu Q, Kepp O, Kroemer G. 3,4-dimethoxychalcone induces autophagy and reduces neointimal hyperplasia and aortic lesions in mouse models of atherosclerosis. Cell Death Dis 2023; 14:758. [PMID: 37989732 PMCID: PMC10663525 DOI: 10.1038/s41419-023-06305-x] [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: 07/20/2023] [Revised: 10/30/2023] [Accepted: 11/13/2023] [Indexed: 11/23/2023]
Abstract
Autophagy inducers can prevent cardiovascular aging and age-associated diseases including atherosclerosis. Therefore, we hypothesized that autophagy-inducing compounds that act on atherosclerosis-relevant cells might have a protective role in the development of atherosclerosis. Here we identified 3,4-dimethoxychalcone (3,4-DC) as an inducer of autophagy in several cell lines from endothelial, myocardial and myeloid/macrophagic origin, as demonstrated by the aggregation of the autophagosome marker GFP-LC3 in the cytoplasm of cells, as well as the downregulation of its nuclear pool indicative of autophagic flux. In this respect, 3,4-DC showed a broader autophagy-inducing activity than another chalcone (4,4- dimethoxychalcone), spermidine and triethylene tetramine. Thus, we characterized the potential antiatherogenic activity of 3,4-DC in two different mouse models, namely, (i) neointima formation with smooth muscle expansion of vein segments grafted to the carotid artery and (ii) genetically predisposed ApoE-/- mice fed an atherogenic diet. In the vein graft model, local application of 3,4-DC was able to maintain the lumen of vessels and to reduce neointima lesions. In the diet-induced model, intraperitoneal injections of 3,4-DC significantly reduced the number of atherosclerotic lesions in the aorta. In conclusion, 3,4-DC stands out as an autophagy inducer with potent antiatherogenic activity.
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Affiliation(s)
- Giulia Cerrato
- Metabolomics and Cell Biology Platforms, Gustave Roussy Comprehensive Cancer Institute, Villejuif, France
- Equipe 11 labellisée Ligue contre le Cancer, Centre de Recherche des Cordeliers, INSERM U1138, Paris, France
| | - Carlota Alvarez-Lucena
- Instituto de Investigaciones Biomédicas "Alberto Sols" (CSIC-UAM) and Centro de Investigación en Red en Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Allan Sauvat
- Metabolomics and Cell Biology Platforms, Gustave Roussy Comprehensive Cancer Institute, Villejuif, France
- Equipe 11 labellisée Ligue contre le Cancer, Centre de Recherche des Cordeliers, INSERM U1138, Paris, France
| | - Yanhua Hu
- The Center of Clinical Pharmacology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Sabrina Forveille
- Metabolomics and Cell Biology Platforms, Gustave Roussy Comprehensive Cancer Institute, Villejuif, France
- Equipe 11 labellisée Ligue contre le Cancer, Centre de Recherche des Cordeliers, INSERM U1138, Paris, France
| | - Guo Chen
- Metabolomics and Cell Biology Platforms, Gustave Roussy Comprehensive Cancer Institute, Villejuif, France
- Equipe 11 labellisée Ligue contre le Cancer, Centre de Recherche des Cordeliers, INSERM U1138, Paris, France
- State Key Laboratory of Medicinal Chemical Biology, Frontiers Science Center for Cell Responses, Tianjin Key Laboratory of Protein Science, Haihe Laboratory of Cell Ecosystem, College of Life Sciences, Nankai University, Tianjin, China
| | - Sylvère Durand
- Metabolomics and Cell Biology Platforms, Gustave Roussy Comprehensive Cancer Institute, Villejuif, France
- Equipe 11 labellisée Ligue contre le Cancer, Centre de Recherche des Cordeliers, INSERM U1138, Paris, France
| | - Fanny Aprahamian
- Metabolomics and Cell Biology Platforms, Gustave Roussy Comprehensive Cancer Institute, Villejuif, France
- Equipe 11 labellisée Ligue contre le Cancer, Centre de Recherche des Cordeliers, INSERM U1138, Paris, France
| | - Marion Leduc
- Metabolomics and Cell Biology Platforms, Gustave Roussy Comprehensive Cancer Institute, Villejuif, France
- Equipe 11 labellisée Ligue contre le Cancer, Centre de Recherche des Cordeliers, INSERM U1138, Paris, France
| | - Omar Motiño
- Metabolomics and Cell Biology Platforms, Gustave Roussy Comprehensive Cancer Institute, Villejuif, France
- Equipe 11 labellisée Ligue contre le Cancer, Centre de Recherche des Cordeliers, INSERM U1138, Paris, France
| | - Lisardo Boscá
- Instituto de Investigaciones Biomédicas "Alberto Sols" (CSIC-UAM) and Centro de Investigación en Red en Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Qingbo Xu
- The Center of Clinical Pharmacology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Oliver Kepp
- Metabolomics and Cell Biology Platforms, Gustave Roussy Comprehensive Cancer Institute, Villejuif, France.
- Equipe 11 labellisée Ligue contre le Cancer, Centre de Recherche des Cordeliers, INSERM U1138, Paris, France.
| | - Guido Kroemer
- Metabolomics and Cell Biology Platforms, Gustave Roussy Comprehensive Cancer Institute, Villejuif, France.
- Equipe 11 labellisée Ligue contre le Cancer, Centre de Recherche des Cordeliers, INSERM U1138, Paris, France.
- Institut du Cancer Paris CARPEM, Department of Biology, Hôpital Européen Georges Pompidou, AP-HP, Paris, France.
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Deng B, Kong W, Suo H, Shen X, Newton MA, Burkett WC, Zhao Z, John C, Sun W, Zhang X, Fan Y, Hao T, Zhou C, Bae-Jump VL. Oleic Acid Exhibits Anti-Proliferative and Anti-Invasive Activities via the PTEN/AKT/mTOR Pathway in Endometrial Cancer. Cancers (Basel) 2023; 15:5407. [PMID: 38001668 PMCID: PMC10670880 DOI: 10.3390/cancers15225407] [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: 10/09/2023] [Revised: 11/08/2023] [Accepted: 11/11/2023] [Indexed: 11/26/2023] Open
Abstract
Reprogramming of fatty acid metabolism promotes cell growth and metastasis through a variety of processes that stimulate signaling molecules, energy storage, and membrane biosynthesis in endometrial cancer. Oleic acid is one of the most important monounsaturated fatty acids in the human body, which appears to have both pro- and anti-tumorigenic activities in various pre-clinical models. In this study, we evaluated the potential anti-tumor effects of oleic acid in endometrial cancer cells and the LKB1fl/flp53fl/fl mouse model of endometrial cancer. Oleic acid increased lipogenesis, inhibited cell proliferation, caused cell cycle G1 arrest, induced cellular stress and apoptosis, and suppressed invasion in endometrial cancer cells. Targeting of diacylglycerol acyltransferases 1 and 2 effectively increased the cytotoxicity of oleic acid. Moreover, oleic acid significantly increased the expression of wild-type PTEN, and knockdown of PTEN by shRNA partially reversed the anti-proliferative and anti-invasive effects of oleic acid. Inhibition of the AKT/mTOR pathway by ipatasertib effectively increased the anti-tumor activity of oleic acid in endometrial cancer cells. Oleic acid treatment (10 mg/kg, daily, oral) for four weeks significantly inhibited tumor growth by 52.1% in the LKB1fl/flp53fl/fl mice. Our findings demonstrated that oleic acid exhibited anti-tumorigenic activities, dependent on the PTEN/AKT/mTOR signaling pathway, in endometrial cancer.
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Affiliation(s)
- Boer Deng
- Department of Gynecology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing 100006, China; (B.D.); (H.S.); (X.S.); (Z.Z.); (X.Z.); (Y.F.)
- Division of Gynecologic Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA; (W.K.); (M.A.N.); (W.C.B.); (C.J.); (W.S.); (T.H.)
| | - Weimin Kong
- Division of Gynecologic Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA; (W.K.); (M.A.N.); (W.C.B.); (C.J.); (W.S.); (T.H.)
| | - Hongyan Suo
- Department of Gynecology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing 100006, China; (B.D.); (H.S.); (X.S.); (Z.Z.); (X.Z.); (Y.F.)
- Division of Gynecologic Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA; (W.K.); (M.A.N.); (W.C.B.); (C.J.); (W.S.); (T.H.)
| | - Xiaochang Shen
- Department of Gynecology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing 100006, China; (B.D.); (H.S.); (X.S.); (Z.Z.); (X.Z.); (Y.F.)
- Division of Gynecologic Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA; (W.K.); (M.A.N.); (W.C.B.); (C.J.); (W.S.); (T.H.)
| | - Meredith A. Newton
- Division of Gynecologic Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA; (W.K.); (M.A.N.); (W.C.B.); (C.J.); (W.S.); (T.H.)
| | - Wesley C. Burkett
- Division of Gynecologic Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA; (W.K.); (M.A.N.); (W.C.B.); (C.J.); (W.S.); (T.H.)
| | - Ziyi Zhao
- Department of Gynecology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing 100006, China; (B.D.); (H.S.); (X.S.); (Z.Z.); (X.Z.); (Y.F.)
- Division of Gynecologic Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA; (W.K.); (M.A.N.); (W.C.B.); (C.J.); (W.S.); (T.H.)
| | - Catherine John
- Division of Gynecologic Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA; (W.K.); (M.A.N.); (W.C.B.); (C.J.); (W.S.); (T.H.)
| | - Wenchuan Sun
- Division of Gynecologic Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA; (W.K.); (M.A.N.); (W.C.B.); (C.J.); (W.S.); (T.H.)
| | - Xin Zhang
- Department of Gynecology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing 100006, China; (B.D.); (H.S.); (X.S.); (Z.Z.); (X.Z.); (Y.F.)
- Division of Gynecologic Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA; (W.K.); (M.A.N.); (W.C.B.); (C.J.); (W.S.); (T.H.)
| | - Yali Fan
- Department of Gynecology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing 100006, China; (B.D.); (H.S.); (X.S.); (Z.Z.); (X.Z.); (Y.F.)
- Division of Gynecologic Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA; (W.K.); (M.A.N.); (W.C.B.); (C.J.); (W.S.); (T.H.)
| | - Tianran Hao
- Division of Gynecologic Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA; (W.K.); (M.A.N.); (W.C.B.); (C.J.); (W.S.); (T.H.)
| | - Chunxiao Zhou
- Division of Gynecologic Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA; (W.K.); (M.A.N.); (W.C.B.); (C.J.); (W.S.); (T.H.)
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Victoria L. Bae-Jump
- Division of Gynecologic Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA; (W.K.); (M.A.N.); (W.C.B.); (C.J.); (W.S.); (T.H.)
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
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Wang Y, Li X, Gao H, Lu Q. Trehalose delays postmenopausal osteoporosis by enhancing AKT/TFEB pathway‑dependent autophagy flow in rats. Exp Ther Med 2023; 26:538. [PMID: 37869632 PMCID: PMC10587861 DOI: 10.3892/etm.2023.12237] [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: 11/09/2022] [Accepted: 07/27/2023] [Indexed: 10/24/2023] Open
Abstract
Osteoporosis is a systemic bone metabolic disorder that plagues the health and quality of life of the elderly. Autophagy plays an important role in bone formation while maintaining the homeostasis of the body. Trehalose is a mTOR-independent autophagy inducer, but to the best of our knowledge, there is no rat model of postmenopausal osteoporosis. The present study found that trehalose can delay postmenopausal osteoporosis in rats, which may be achieved by inducing and enhancing AKT/transcription factor EB pathway-dependent autophagy flow. The specific mechanism of its occurrence needs to be further studied. Trehalose-containing drugs are promising for delaying postmenopausal osteoporosis. Hematoxylin and eosin (H&E) staining, western blotting, micro computerized tomography (CT) scanning and Transmission electron microscopy were used to investigate the role of trehalose in postmenopausal osteoporosis rat model at protein, cell and histology aspects. According to the H&E staining results, the bone trabecular histological structure of the trehalose group was superior to that of the model group. The Micro CT scanning indicated the imaging structure of bone trabeculae in the trehalose group was superior to than that in the model group. Western blotting indicated the activation of autophagic flow in trehalose group, the autophagy degree of the trehalose group is greater than that of the model group; Transmission electron microscopy indicated the autophagy degree of the Trehalose group was greater than that of the model group under electron microscopy. Trehalose can delay postmenopausal osteoporosis in rats, which may be achieved by inducing and enhancing Akt/TFEB pathway-dependent autophagy flow.
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Affiliation(s)
- Yongli Wang
- Department of Orthopedics, Huzhou Central Hospital, Huzhou Basic and Clinical Translation of Orthopedics Key Laboratory, Huzhou, Zhejiang 313300, P.R. China
| | - Xingcun Li
- Public Health Section, Huzhou Central Hospital, Huzhou Basic and Clinical Translation of Orthopedics Key Laboratory, Huzhou, Zhejiang 313300, P.R. China
| | - Hongliang Gao
- Department of Orthopedics, Huzhou Central Hospital, Huzhou Basic and Clinical Translation of Orthopedics Key Laboratory, Huzhou, Zhejiang 313300, P.R. China
| | - Qian Lu
- Department of Orthopedics, Huzhou Central Hospital, Huzhou Basic and Clinical Translation of Orthopedics Key Laboratory, Huzhou, Zhejiang 313300, P.R. China
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Akhtar MS, Alavudeen SS, Raza A, Imam MT, Almalki ZS, Tabassum F, Iqbal MJ. Current understanding of structural and molecular changes in diabetic cardiomyopathy. Life Sci 2023; 332:122087. [PMID: 37714373 DOI: 10.1016/j.lfs.2023.122087] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 09/11/2023] [Accepted: 09/12/2023] [Indexed: 09/17/2023]
Abstract
Diabetic Mellitus has been characterized as the most prevalent disease throughout the globe associated with the serious morbidity and mortality of vital organs. Cardiomyopathy is the major leading complication of diabetes and within this, myocardial dysfunction or failure is the leading cause of the emergency hospital admission. The review is aimed to comprehend the perspectives associated with diabetes-induced cardiovascular complications. The data was collected from several electronic databases such as Google Scholar, Science Direct, ACS publication, PubMed, Springer, etc. using the keywords such as diabetes and its associated complication, the prevalence of diabetes, the anatomical and physiological mechanism of diabetes-induced cardiomyopathy, the molecular mechanism of diabetes-induced cardiomyopathy, oxidative stress, and inflammatory stress, etc. The collected scientific data was screened by different experts based on the inclusion and exclusion criteria of the study. This review findings revealed that diabetes is associated with inefficient substrate utilization, inability to increase glucose metabolism and advanced glycation end products within the diabetic heart resulting in mitochondrial uncoupling, glucotoxicity, lipotoxicity, and initially subclinical cardiac dysfunction and finally in overt heart failure. Furthermore, several factors such as hypertension, overexpression of renin angiotensin system, hypertrophic obesity, etc. have been seen as majorly associated with cardiomyopathy. The molecular examination showed biochemical disability and generation of the varieties of free radicals and inflammatory cytokines and becomes are the substantial causes of cardiomyopathy. This review provides a better understanding of the involved pathophysiology and offers an open platform for discussing and targeting therapy in alleviating diabetes-induced early heart failure or cardiomyopathy.
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Affiliation(s)
- Md Sayeed Akhtar
- Department of Clinical Pharmacy, College of Pharmacy, King Khalid University, Al-Fara, Abha 62223, Saudi Arabia.
| | - Sirajudeen S Alavudeen
- Department of Clinical Pharmacy, College of Pharmacy, King Khalid University, Al-Fara, Abha 62223, Saudi Arabia
| | - Asif Raza
- Department of Pharmacology, Penn State Cancer Institute, CH72, Penn State College of Medicine, Penn State Milton S. Hershey Medical Center, 500 University Drive, Hershey, PA 17033, USA
| | - Mohammad Tarique Imam
- Department of Clinical Pharmacy, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj 16273, Saudi Arabia
| | - Ziad Saeed Almalki
- Department of Clinical Pharmacy, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj 16273, Saudi Arabia
| | - Fauzia Tabassum
- Department of Pharmacology, College of Dentistry and Pharmacy, Buraydah Private College, Al Qassim 51418, Saudi Arabia; Department of Pharmacology, Vision College, Ishbilia, Riyadh 13226-3830, Saudi Arabia
| | - Mir Javid Iqbal
- Department of Pharmaceutical Sciences, Northeastern University, Boston, MA 02115, USA
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Torres-López L, Dobrovinskaya O. Dissecting the Role of Autophagy-Related Proteins in Cancer Metabolism and Plasticity. Cells 2023; 12:2486. [PMID: 37887330 PMCID: PMC10605719 DOI: 10.3390/cells12202486] [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: 09/22/2023] [Revised: 10/11/2023] [Accepted: 10/16/2023] [Indexed: 10/28/2023] Open
Abstract
Modulation of autophagy as an anticancer strategy has been widely studied and evaluated in several cell models. However, little attention has been paid to the metabolic changes that occur in a cancer cell when autophagy is inhibited or induced. In this review, we describe how the expression and regulation of various autophagy-related (ATGs) genes and proteins are associated with cancer progression and cancer plasticity. We present a comprehensive review of how deregulation of ATGs affects cancer cell metabolism, where inhibition of autophagy is mainly reflected in the enhancement of the Warburg effect. The importance of metabolic changes, which largely depend on the cancer type and form part of a cancer cell's escape strategy after autophagy modulation, is emphasized. Consequently, pharmacological strategies based on a dual inhibition of metabolic and autophagy pathways emerged and are reviewed critically here.
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Affiliation(s)
- Liliana Torres-López
- Laboratory of Immunology and Ionic Transport Regulation, Biomedical Research Centre, University of Colima, Av. 25 de Julio #965, Villas de San Sebastián, Colima 28045, Mexico;
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Jusović M, Starič P, Jarc Jovičić E, Petan T. The Combined Inhibition of Autophagy and Diacylglycerol Acyltransferase-Mediated Lipid Droplet Biogenesis Induces Cancer Cell Death during Acute Amino Acid Starvation. Cancers (Basel) 2023; 15:4857. [PMID: 37835551 PMCID: PMC10571868 DOI: 10.3390/cancers15194857] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 09/25/2023] [Accepted: 09/27/2023] [Indexed: 10/15/2023] Open
Abstract
Lipid droplets (LDs) are dynamic organelles involved in the management of fatty acid trafficking and metabolism. Recent studies suggest that autophagy and LDs serve complementary roles in the protection against nutrient stress, but the autophagy-LD interplay in cancer cells is not well understood. Here, we examined the relationship between autophagy and LDs in starving HeLa cervical cancer- and MDA-MB-231 breast cancer cells. We found that acute amino acid depletion induces autophagy and promotes diacylglycerol acyltransferase 1 (DGAT1)-mediated LD accumulation in HeLa cells. Inhibition of autophagy via late-stage autophagy inhibitors, or by knocking down autophagy-related 5 (ATG5), reduced LD accumulation in amino acid-starved cancer cells, suggesting that autophagy contributes to LD biogenesis. On the contrary, knockdown of adipose triglyceride lipase (ATGL) increased LD accumulation, suggesting that LD breakdown is mediated by lipolysis under these conditions. Concurrent inhibition of autophagy by silencing ATG5 and of LD biogenesis using DGAT inhibitors was effective in killing starving HeLa cells, whereas cell survival was not compromised by suppression of ATGL-mediated lipolysis. Autophagy-dependent LD biogenesis was also observed in the aggressive triple-negative MDA-MB-231 breast cancer cells deprived of amino acids, but these cells were not sensitized to starvation by the combined inhibition of LD biogenesis and autophagy. These findings reveal that while targeting autophagy-driven and DGAT-mediated LD biogenesis reduces the resilience of HeLa cervical cancer cells to amino acid deprivation, this strategy may not be successful in other cancer cell types.
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Affiliation(s)
- Maida Jusović
- Department of Molecular and Biomedical Sciences, Jožef Stefan Institute, SI-1000 Ljubljana, Slovenia; (M.J.); (P.S.); (E.J.J.)
- Jožef Stefan International Postgraduate School, SI-1000 Ljubljana, Slovenia
| | - Pia Starič
- Department of Molecular and Biomedical Sciences, Jožef Stefan Institute, SI-1000 Ljubljana, Slovenia; (M.J.); (P.S.); (E.J.J.)
| | - Eva Jarc Jovičić
- Department of Molecular and Biomedical Sciences, Jožef Stefan Institute, SI-1000 Ljubljana, Slovenia; (M.J.); (P.S.); (E.J.J.)
- Jožef Stefan International Postgraduate School, SI-1000 Ljubljana, Slovenia
| | - Toni Petan
- Department of Molecular and Biomedical Sciences, Jožef Stefan Institute, SI-1000 Ljubljana, Slovenia; (M.J.); (P.S.); (E.J.J.)
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Hong BV, Rhodes CH, Agus JK, Tang X, Zhu C, Zheng JJ, Zivkovic AM. A single 36-h water-only fast vastly remodels the plasma lipidome. Front Cardiovasc Med 2023; 10:1251122. [PMID: 37745091 PMCID: PMC10513913 DOI: 10.3389/fcvm.2023.1251122] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 08/21/2023] [Indexed: 09/26/2023] Open
Abstract
Background Prolonged fasting, characterized by restricting caloric intake for 24 h or more, has garnered attention as a nutritional approach to improve lifespan and support healthy aging. Previous research from our group showed that a single bout of 36-h water-only fasting in humans resulted in a distinct metabolomic signature in plasma and increased levels of bioactive metabolites, which improved macrophage function and lifespan in C. elegans. Objective This secondary outcome analysis aimed to investigate changes in the plasma lipidome associated with prolonged fasting and explore any potential links with markers of cardiometabolic health and aging. Method We conducted a controlled pilot study with 20 male and female participants (mean age, 27.5 ± 4.4 years; mean BMI, 24.3 ± 3.1 kg/m2) in four metabolic states: (1) overnight fasted (baseline), (2) 2-h postprandial fed state (fed), (3) 36-h fasted state (fasted), and (4) 2-h postprandial refed state 12 h after the 36-h fast (refed). Plasma lipidomic profiles were analyzed using liquid chromatography and electrospray ionization mass spectrometry. Results Several lipid classes, including lysophosphatidylcholine (LPC), lysophosphatidylethanolamine (LPE), phosphatidylethanolamine, and triacylglycerol were significantly reduced in the 36-h fasted state, while free fatty acids, ceramides, and sphingomyelin were significantly increased compared to overnight fast and fed states (P < 0.05). After correction for multiple testing, 245 out of 832 lipid species were significantly altered in the fasted state compared to baseline (P < 0.05). Random forest models revealed that several lipid species, such as LPE(18:1), LPC(18:2), and FFA(20:1) were important features in discriminating the fasted state from both the overnight fasted and postprandial state. Conclusion Our findings indicate that prolonged fasting vastly remodels the plasma lipidome and markedly alters the concentrations of several lipid species, which may be sensitive biomarkers of prolonged fasting. These changes in lipid metabolism during prolonged fasting have important implications for the management of cardiometabolic health and healthy aging, and warrant further exploration and validation in larger cohorts and different population groups.
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Affiliation(s)
| | | | | | | | | | | | - Angela M. Zivkovic
- Department of Nutrition, University of California, Davis, Davis, CA, United States
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Xie Y, Zhou Y, Wang J, Du L, Ren Y, Liu F. Ferroptosis, autophagy, tumor and immunity. Heliyon 2023; 9:e19799. [PMID: 37810047 PMCID: PMC10559173 DOI: 10.1016/j.heliyon.2023.e19799] [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: 04/07/2023] [Revised: 08/20/2023] [Accepted: 09/01/2023] [Indexed: 10/10/2023] Open
Abstract
Ferroptosis was first proposed in 2012, a new form of cell death. Autophagy plays a crucial role in cell clearance and maintaining homeostasis. Autophagy is involved in the initial step of ferroptosis under the action of histone elements such as NCOA4, RAB7A, and BECN1. Ferroptosis and autophagy are involved in tumor progression, treatment, and drug resistance in the tumor microenvironment. In this review, we described the mechanisms of ferroptosis, autophagy, and tumor and immunotherapy, respectively, and emphasized the relationship between autophagy-related ferroptosis and tumor.
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Affiliation(s)
| | | | - Jiale Wang
- Department of Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, 150081, China
| | - Lijuan Du
- Department of Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, 150081, China
| | - Yuanyuan Ren
- Department of Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, 150081, China
| | - Fang Liu
- Department of Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, 150081, China
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Hao W, Cha R, Wang M, Li J, Guo H, Du R, Zhou F, Jiang X. Ligand-Modified Gold Nanoparticles as Mitochondrial Modulators: Regulation of Intestinal Barrier and Therapy for Constipation. ACS NANO 2023; 17:13377-13392. [PMID: 37449942 DOI: 10.1021/acsnano.3c01656] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
Intestinal metabolism-related diseases, such as constipation, inflammatory bowel disease, irritable bowel syndrome, and colorectal cancer, could be associated with the dysfunction of intestinal mitochondria. The mitochondria of intestinal epithelial cells are of great significance for promoting intestinal motility and maintaining intestinal metabolism. It is necessary for the prophylaxis and therapy of intestinal metabolism-related diseases to improve mitochondrial function. We investigated the effect of 4,6-diamino-2-pyrimidinethiol-modified gold nanoparticles (D-Au NPs) on intestinal mitochondria and studied the regulatory role of D-Au NPs on mitochondria metabolism-related disease. D-Au NPs improved the antioxidation capability of mitochondria, regulated the mitochondrial metabolism, and maintained intestinal cellular homeostasis via the activation of AMPK and regulation of PGC-1α with its downstream signaling (UCP2 and DRP1), enhancing the intestinal mechanical barrier. D-Au NPs improved the intestinal mitochondrial function to intervene in the emergence of constipation, which could help develop drugs to treat and prevent mitochondrial metabolism-related diseases. Our findings provided an in-depth understanding of the mitochondrial effects of Au NPs for improving human intestinal barriers.
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Affiliation(s)
- Wenshuai Hao
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, P. R. China
- Laboratory of Theoretical and Computational Nanoscience, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, P.R. China
| | - Ruitao Cha
- Laboratory of Theoretical and Computational Nanoscience, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, P.R. China
| | - Mingzheng Wang
- Laboratory of Theoretical and Computational Nanoscience, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, P.R. China
| | - Juanjuan Li
- Laboratory of Theoretical and Computational Nanoscience, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, P.R. China
| | - Hongbo Guo
- Laboratory of Theoretical and Computational Nanoscience, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, P.R. China
| | - Ran Du
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Shenzhen Key Laboratory of Agricultural Synthetic Biology, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518124, China
| | - Fengshan Zhou
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, P. R. China
| | - Xingyu Jiang
- Guangdong Provincial Key Laboratory of Advanced Biomaterials, Shenzhen Key Laboratory of Smart Healthcare Engineering, Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, P. R. China
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Crewe C. Energetic Stress-Induced Metabolic Regulation by Extracellular Vesicles. Compr Physiol 2023; 13:5051-5068. [PMID: 37358503 PMCID: PMC10414774 DOI: 10.1002/cphy.c230001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/27/2023]
Abstract
Recent studies have demonstrated that extracellular vesicles (EVs) serve powerful and complex functions in metabolic regulation and metabolic-associated disease, although this field of research is still in its infancy. EVs are released into the extracellular space from all cells and carry a wide range of cargo including miRNAs, mRNA, DNA, proteins, and metabolites that have robust signaling effects in receiving cells. EV production is stimulated by all major stress pathways and, as such, has a role in both restoring homeostasis during stress and perpetuating disease. In metabolic regulation, the dominant stress signal is a lack of energy due to either nutrient deficits or damaged mitochondria from nutrient excess. This stress signal is termed "energetic stress," which triggers a robust and evolutionarily conserved response that engages major cellular stress pathways, the ER unfolded protein response, the hypoxia response, the antioxidant response, and autophagy. This article proposes the model that energetic stress is the dominant stimulator of EV release with a focus on metabolically important cells such as hepatocytes, adipocytes, myocytes, and pancreatic β-cells. Furthermore, this article will discuss how the cargo in stress-stimulated EVs regulates metabolism in receiving cells in both beneficial and detrimental ways. © 2023 American Physiological Society. Compr Physiol 13:5051-5068, 2023.
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Affiliation(s)
- Clair Crewe
- Department of Cell Biology and Physiology, Washington University School of Medicine, St. Louis, Missouri, USA
- Department of Internal Medicine, Division of Endocrinology, Metabolism and Lipid Research, Washington University School of Medicine, St. Louis, Missouri, USA
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Jin C, Wang T, Yang Y, Zhou P, Li J, Wu W, Lv X, Ma G, Wang A. Rational targeting of autophagy in colorectal cancer therapy: From molecular interactions to pharmacological compounds. ENVIRONMENTAL RESEARCH 2023; 227:115721. [PMID: 36965788 DOI: 10.1016/j.envres.2023.115721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 03/13/2023] [Accepted: 03/18/2023] [Indexed: 05/08/2023]
Abstract
The abnormal progression of tumors has been a problem for treatment of cancer and therapeutic should be directed towards targeting main mechanisms involved in tumorigenesis in tumors. The genomic mutations can result in changes in biological mechanisms in human cancers. Colorectal cancer is one of the most malignant tumors of gastrointestinal tract and its treatment has been faced some difficulties due to development of resistance in tumor cells and also, their malignant behavior. Hence, new therapeutic modalities for colorectal cancer are being investigated. Autophagy is a "self-digestion" mechanism that is responsible for homeostasis preserving in cells and its aberrant activation/inhibition can lead to tumorigenesis. The current review focuses on the role of autophagy mechanism in colorectal cancer. Autophagy may be associated with increase/decrease in progression of colorectal cancer due to mutual function of this molecular mechanism. Pro-survival autophagy inhibits apoptosis to increase proliferation and survival rate of colorectal tumor cells and it is also involved in cancer metastasis maybe due to EMT induction. In contrast, pro-death autophagy decreases growth and invasion of colorectal tumor cells. The status of autophagy (upregulation and down-regulation) is a determining factor for therapy response in colorectal tumor cells. Therefore, targeting autophagy can increase sensitivity of colorectal tumor cells to chemotherapy and radiotherapy. Interestingly, nanoparticles can be employed for targeting autophagy in cancer therapy and they can both induce/suppress autophagy in tumor cells. Furthermore, autophagy modulators can be embedded in nanostructures in improving tumor suppression and providing cancer immunotherapy.
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Affiliation(s)
- Canhui Jin
- Department of Gastrointestinal Surgery, South China Hospital, Health Science Center, Shenzhen University, Shenzhen, 518116, PR China
| | - Tianbao Wang
- Department of Gastrointestinal Surgery, South China Hospital, Health Science Center, Shenzhen University, Shenzhen, 518116, PR China
| | - Yanhui Yang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Henan University of Science and Technology, Luoyang, 471003, China
| | - Pin Zhou
- Department of Gastrointestinal Surgery, South China Hospital, Health Science Center, Shenzhen University, Shenzhen, 518116, PR China
| | - Juncheng Li
- Department of Gastrointestinal Surgery, South China Hospital, Health Science Center, Shenzhen University, Shenzhen, 518116, PR China
| | - Wenhao Wu
- Department of Gastrointestinal Surgery, South China Hospital, Health Science Center, Shenzhen University, Shenzhen, 518116, PR China
| | - Xin Lv
- Department of Gastrointestinal Surgery, South China Hospital, Health Science Center, Shenzhen University, Shenzhen, 518116, PR China
| | - Guoqing Ma
- Department of Gastrointestinal Surgery, South China Hospital, Health Science Center, Shenzhen University, Shenzhen, 518116, PR China
| | - Aihong Wang
- Department of Gastrointestinal Surgery, South China Hospital, Health Science Center, Shenzhen University, Shenzhen, 518116, PR China.
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39
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Miyano T, Suzuki A, Sakamoto N. Actin cytoskeletal reorganization is involved in hyperosmotic stress-induced autophagy in tubular epithelial cells. Biochem Biophys Res Commun 2023; 663:1-7. [PMID: 37116392 DOI: 10.1016/j.bbrc.2023.04.070] [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: 04/06/2023] [Revised: 04/14/2023] [Accepted: 04/20/2023] [Indexed: 04/30/2023]
Abstract
Tubular epithelial cells are routinely exposed to severe changes in osmolarity. Although the autophagic activity of cells is an indispensable process to maintain cellular homeostasis and respond to stressors, the effect of hyperosmotic stress on autophagic activity in tubular epithelial cells remains unknown. The aim of this study was to determine the effect of hyperosmotic stress on autophagy in rat kidney tubular epithelial cells focusing on the role of actin and microtubule cytoskeletons. Normal rat kidney (NRK)-52E cells exposed to mannitol-induced hyperosmotic stress. As a result, NRK-52E cells showed elevated protein levels of the autophagosome marker LC3-II, indicating enhancement of the autophagic flux. Hyperosmotic stress also transiently decreased cell volume and caused the reorganization of actin and microtubule cytoskeletal structures in NRK-52E cells. The inhibition of the actin cytoskeleton reorganization by cytochalasin D impaired the increase in the levels of LC3-II; however, disassembly of the microtubules following treatment with nocodazole did not affect the increase. These results indicate that hyperosmotic stress can induce autophagy mediated by the reorganization of the actin cytoskeleton in tubular epithelial cells.
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Affiliation(s)
- Takashi Miyano
- Department of Mechanical Systems Engineering, Graduate School of Systems Design, Tokyo Metropolitan University, Tokyo, Japan.
| | - Atsushi Suzuki
- Department of Mechanical Systems Engineering, Graduate School of Systems Design, Tokyo Metropolitan University, Tokyo, Japan
| | - Naoya Sakamoto
- Department of Mechanical Systems Engineering, Graduate School of Systems Design, Tokyo Metropolitan University, Tokyo, Japan.
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40
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Du YX, Mamun AA, Lyu AP, Zhang HJ. Natural Compounds Targeting the Autophagy Pathway in the Treatment of Colorectal Cancer. Int J Mol Sci 2023; 24:ijms24087310. [PMID: 37108476 PMCID: PMC10138367 DOI: 10.3390/ijms24087310] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 04/03/2023] [Accepted: 04/12/2023] [Indexed: 04/29/2023] Open
Abstract
Autophagy is a highly conserved intracellular degradation pathway by which misfolded proteins or damaged organelles are delivered in a double-membrane vacuolar vesicle and finally degraded by lysosomes. The risk of colorectal cancer (CRC) is high, and there is growing evidence that autophagy plays a critical role in regulating the initiation and metastasis of CRC; however, whether autophagy promotes or suppresses tumor progression is still controversial. Many natural compounds have been reported to exert anticancer effects or enhance current clinical therapies by modulating autophagy. Here, we discuss recent advancements in the molecular mechanisms of autophagy in regulating CRC. We also highlight the research on natural compounds that are particularly promising autophagy modulators for CRC treatment with clinical evidence. Overall, this review illustrates the importance of autophagy in CRC and provides perspectives for these natural autophagy regulators as new therapeutic candidates for CRC drug development.
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Affiliation(s)
- Yin-Xiao Du
- School of Chinese Medicine, Hong Kong Baptist University, 7 Baptist University Road, Kowloon Tong, Kowloon, Hong Kong SAR, China
| | - Abdullah Al Mamun
- School of Chinese Medicine, Hong Kong Baptist University, 7 Baptist University Road, Kowloon Tong, Kowloon, Hong Kong SAR, China
| | - Ai-Ping Lyu
- School of Chinese Medicine, Hong Kong Baptist University, 7 Baptist University Road, Kowloon Tong, Kowloon, Hong Kong SAR, China
| | - Hong-Jie Zhang
- School of Chinese Medicine, Hong Kong Baptist University, 7 Baptist University Road, Kowloon Tong, Kowloon, Hong Kong SAR, China
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41
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Sepúlveda C, Rodríguez JM, Monsalves-Álvarez M, Donoso-Barraza C, Pino-de la Fuente F, Matías I, Leste-Lasserre T, Zizzari P, Morselli E, Cota D, Llanos M, Troncoso R. The CB1 cannabinoid receptor regulates autophagy in the tibialis anterior skeletal muscle in mice. Biol Res 2023; 56:14. [PMID: 36964619 PMCID: PMC10039507 DOI: 10.1186/s40659-023-00426-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 03/15/2023] [Indexed: 03/26/2023] Open
Abstract
The endocannabinoid system (ECS) regulates energy metabolism, has been implicated in the pathogenesis of metabolic diseases and exerts its actions mainly through the type 1 cannabinoid receptor (CB1). Likewise, autophagy is involved in several cellular processes. It is required for the normal development of muscle mass and metabolism, and its deregulation is associated with diseases. It is known that the CB1 regulates signaling pathways that control autophagy, however, it is currently unknown whether the ECS could regulate autophagy in the skeletal muscle of obese mice. This study aimed to investigate the role of the CB1 in regulating autophagy in skeletal muscle. We found concomitant deregulation in the ECS and autophagy markers in high-fat diet-induced obesity. In obese CB1-KO mice, the autophagy-associated protein LC3 II does not accumulate when mTOR and AMPK phosphorylation levels do not change. Acute inhibition of the CB1 with JD-5037 decreased LC3 II protein accumulation and autophagic flux. Our results suggest that the CB1 regulates autophagy in the tibialis anterior skeletal muscle in both lean and obese mice.
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Affiliation(s)
- Carlos Sepúlveda
- Laboratorio de Investigación en Nutrición y Actividad Física (LABINAF), Instituto de Nutrición y Tecnología de los Alimentos (INTA), Universidad de Chile, Santiago, Chile.
- Laboratorio de Ciencias del Ejercicio, Clínica MEDS, Santiago, Chile.
| | - Juan Manuel Rodríguez
- Laboratorio de Investigación en Nutrición y Actividad Física (LABINAF), Instituto de Nutrición y Tecnología de los Alimentos (INTA), Universidad de Chile, Santiago, Chile
| | | | - Camila Donoso-Barraza
- Laboratorio de Investigación en Nutrición y Actividad Física (LABINAF), Instituto de Nutrición y Tecnología de los Alimentos (INTA), Universidad de Chile, Santiago, Chile
| | - Francisco Pino-de la Fuente
- Laboratorio de Investigación en Nutrición y Actividad Física (LABINAF), Instituto de Nutrición y Tecnología de los Alimentos (INTA), Universidad de Chile, Santiago, Chile
- Universidad de O'Higgins, Rancagua, Chile
| | - Isabelle Matías
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, 33000, Bordeaux, France
| | | | - Philippe Zizzari
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, 33000, Bordeaux, France
| | - Eugenia Morselli
- Department of Basic Sciences, Faculty of Medicine and Sciences, Universidad San Sebastián, Santiago de Chile, Chile
| | - Daniela Cota
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, 33000, Bordeaux, France
| | - Miguel Llanos
- Laboratorio de Investigación en Nutrición y Actividad Física (LABINAF), Instituto de Nutrición y Tecnología de los Alimentos (INTA), Universidad de Chile, Santiago, Chile
- Laboratorio de Hormonas y Regulación Metabólicas, Instituto de Nutrición y Tecnología de los Alimentos (INTA), Universidad de Chile, Santiago, Chile
| | - Rodrigo Troncoso
- Laboratorio de Investigación en Nutrición y Actividad Física (LABINAF), Instituto de Nutrición y Tecnología de los Alimentos (INTA), Universidad de Chile, Santiago, Chile.
- Advanced Center for Chronic Diseases (ACCDiS), Universidad de Chile, 8380492, Santiago, Chile.
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42
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Elsasser S, Elia LP, Morimoto RI, Powers ET, Finley D, Costa B, Budron M, Tokuno Z, Wang S, Iyer RG, Barth B, Mockler E, Finkbeiner S, Gestwicki JE, Richardson RAK, Stoeger T, Tan EP, Xiao Q, Cole CM, Massey LA, Garza D, Kelly JW, Rainbolt TK, Chou CC, Masto VB, Frydman J, Nixon RA. A Comprehensive Enumeration of the Human Proteostasis Network. 2. Components of the Autophagy-Lysosome Pathway. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.22.533675. [PMID: 36993380 PMCID: PMC10055369 DOI: 10.1101/2023.03.22.533675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
The condition of having a healthy, functional proteome is known as protein homeostasis, or proteostasis. Establishing and maintaining proteostasis is the province of the proteostasis network, approximately 2,700 components that regulate protein synthesis, folding, localization, and degradation. The proteostasis network is a fundamental entity in biology that is essential for cellular health and has direct relevance to many diseases of protein conformation. However, it is not well defined or annotated, which hinders its functional characterization in health and disease. In this series of manuscripts, we aim to operationally define the human proteostasis network by providing a comprehensive, annotated list of its components. We provided in a previous manuscript a list of chaperones and folding enzymes as well as the components that make up the machineries for protein synthesis, protein trafficking into and out of organelles, and organelle-specific degradation pathways. Here, we provide a curated list of 838 unique high-confidence components of the autophagy-lysosome pathway, one of the two major protein degradation systems in human cells.
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Affiliation(s)
- Suzanne Elsasser
- Department of Cell Biology, Harvard Medical School, Boston, MA, USA
| | - Lisa P Elia
- Center for Systems and Therapeutics and Taube/Koret Center for Neurodegenerative Disease Research, San Francisco, CA, USA
- The J. David Gladstone Institutes, San Francisco, CA, USA
| | - Richard I Morimoto
- Department of Molecular Biosciences, Rice Institute for Biomedical Research, Northwestern University, Evanston, IL, USA
| | - Evan T Powers
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA USA
| | - Daniel Finley
- Department of Cell Biology, Harvard Medical School, Boston, MA, USA
| | - Beatrice Costa
- Center for Systems and Therapeutics and Taube/Koret Center for Neurodegenerative Disease Research, San Francisco, CA, USA
- The J. David Gladstone Institutes, San Francisco, CA, USA
| | - Maher Budron
- Center for Systems and Therapeutics and Taube/Koret Center for Neurodegenerative Disease Research, San Francisco, CA, USA
- The J. David Gladstone Institutes, San Francisco, CA, USA
| | - Zachary Tokuno
- Center for Systems and Therapeutics and Taube/Koret Center for Neurodegenerative Disease Research, San Francisco, CA, USA
- The J. David Gladstone Institutes, San Francisco, CA, USA
| | - Shijie Wang
- Center for Systems and Therapeutics and Taube/Koret Center for Neurodegenerative Disease Research, San Francisco, CA, USA
- The J. David Gladstone Institutes, San Francisco, CA, USA
| | - Rajshri G Iyer
- Center for Systems and Therapeutics and Taube/Koret Center for Neurodegenerative Disease Research, San Francisco, CA, USA
- The J. David Gladstone Institutes, San Francisco, CA, USA
| | - Bianca Barth
- Center for Systems and Therapeutics and Taube/Koret Center for Neurodegenerative Disease Research, San Francisco, CA, USA
- The J. David Gladstone Institutes, San Francisco, CA, USA
| | - Eric Mockler
- Center for Systems and Therapeutics and Taube/Koret Center for Neurodegenerative Disease Research, San Francisco, CA, USA
- The J. David Gladstone Institutes, San Francisco, CA, USA
| | - Steve Finkbeiner
- Center for Systems and Therapeutics and Taube/Koret Center for Neurodegenerative Disease Research, San Francisco, CA, USA
- The J. David Gladstone Institutes, San Francisco, CA, USA
- Departments of Neurology and Physiology, UCSF, San Francisco, CA, USA
| | - Jason E Gestwicki
- Department of Pharmaceutical Chemistry, University of California San Francisco, San Francisco, CA, USA
- Institute for Neurodegenerative Disease, University of California San Francisco, San Francisco, CA, USA
| | - Reese A K Richardson
- Center for Genetic Medicine, Northwestern University, Chicago, IL, USA
- Northwestern Institute on Complex Systems (NICO), Northwestern University, Evanston, IL, USA
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, IL USA
| | - Thomas Stoeger
- Center for Genetic Medicine, Northwestern University, Chicago, IL, USA
- Northwestern Institute on Complex Systems (NICO), Northwestern University, Evanston, IL, USA
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, IL USA
| | - Ee Phie Tan
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA USA
| | - Qiang Xiao
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA USA
| | - Christian M Cole
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA USA
| | - Lynée A Massey
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA USA
| | - Dan Garza
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA USA
| | - Jeffery W Kelly
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA USA
- The Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, CA, USA
| | - T Kelly Rainbolt
- Department of Biology and Genetics, Stanford University, Stanford, CA, USA
| | - Ching-Chieh Chou
- Department of Biology and Genetics, Stanford University, Stanford, CA, USA
| | - Vincent B Masto
- Department of Biology and Genetics, Stanford University, Stanford, CA, USA
| | - Judith Frydman
- Department of Biology and Genetics, Stanford University, Stanford, CA, USA
| | - Ralph A Nixon
- Center for Dementia Research, Nathan S. Kline Institute, Orangeburg, NY, USA
- Department of Psychiatry, New York University Langone Health, New York, NY, USA
- Department of Cell Biology, New York University Langone Health, New York, NY, USA
- NYU Neuroscience Institute, New York University Langone Health, New York, NY, USA
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43
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Tan W, Zhang S, He Y, Wu Z, Wang M, Jia R, Zhu D, Liu M, Zhao X, Yang Q, Wu Y, Zhang S, Huang J, Mao S, Ou X, Gao Q, Sun D, Tian B, Chen S, Cheng A. Nonstructural proteins 2B and 4A of Tembusu virus induce complete autophagy to promote viral multiplication in vitro. Vet Res 2023; 54:23. [PMID: 36918952 PMCID: PMC10013240 DOI: 10.1186/s13567-023-01152-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 02/07/2023] [Indexed: 03/15/2023] Open
Abstract
Tembusu virus (TMUV) is an emerging flavivirus that has broken out in different regions of China. TMUV infection has been reported to induce autophagy in duck embryo fibroblast cells. However, the molecular mechanisms underlying this autophagy induction remain unclear. Here, we explored the interactions between autophagy and TMUV and the effects of the structural and nonstructural proteins of TMUV on autophagy in vitro. Among our results, TMUV infection enhanced autophagy to facilitate viral replication in HEK293T cells. After pharmacologically inducing autophagy with rapamycin (Rapa), the replication of TMUV increased by a maximum of 14-fold compared with the control group. To determine which TMUV protein primarily induced autophagy, cells were transfected with two structural proteins and seven nonstructural proteins of TMUV. Western blotting showed that nonstructural proteins 2B (NS2B) and 4 A (NS4A) of TMUV significantly induced the conversion of microtubule-associated protein 1 light chain 3 (LC3) from LC3-I to LC3-II in HEK293T cells. In addition, through immunofluorescence assays, we found that NS2B and NS4A significantly increased the punctate fluorescence of GFP-LC3-II. Furthermore, we found that both NS2B and NS4A interacted with polyubiquitin-binding protein sequestosome 1 (SQSTM1/p62) in a coimmunoprecipitation assay. Moreover, the autophagic degradation of p62 and LC3 mediated by NS2B or NS4A was inhibited by treatment with the autophagic flux inhibitor chloroquine (CQ). These results confirmed the vital effects of NS2B and NS4A in TMUV-induced complete autophagy and clarified the importance of complete autophagy for viral replication, providing novel insight into the relationship between TMUV and autophagy.
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Affiliation(s)
- Wangyang Tan
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Senzhao Zhang
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Yu He
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Zhen Wu
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Mingshu Wang
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.,Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Renyong Jia
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.,Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Dekang Zhu
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Mafeng Liu
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.,Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Xinxin Zhao
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.,Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Qiao Yang
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.,Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Ying Wu
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.,Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Shaqiu Zhang
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.,Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Juan Huang
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.,Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Sai Mao
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.,Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Xumin Ou
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.,Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Qun Gao
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.,Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Di Sun
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.,Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Bin Tian
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Shun Chen
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China. .,Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China. .,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.
| | - Anchun Cheng
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China. .,Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China. .,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.
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44
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Zhang K, Sowers ML, Cherryhomes EI, Singh VK, Mishra A, Restrepo BI, Khan A, Jagannath C. Sirtuin-dependent metabolic and epigenetic regulation of macrophages during tuberculosis. Front Immunol 2023; 14:1121495. [PMID: 36993975 PMCID: PMC10040548 DOI: 10.3389/fimmu.2023.1121495] [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: 12/11/2022] [Accepted: 02/01/2023] [Indexed: 03/14/2023] Open
Abstract
Macrophages are the preeminent phagocytic cells which control multiple infections. Tuberculosis a leading cause of death in mankind and the causative organism Mycobacterium tuberculosis (MTB) infects and persists in macrophages. Macrophages use reactive oxygen and nitrogen species (ROS/RNS) and autophagy to kill and degrade microbes including MTB. Glucose metabolism regulates the macrophage-mediated antimicrobial mechanisms. Whereas glucose is essential for the growth of cells in immune cells, glucose metabolism and its downsteam metabolic pathways generate key mediators which are essential co-substrates for post-translational modifications of histone proteins, which in turn, epigenetically regulate gene expression. Herein, we describe the role of sirtuins which are NAD+-dependent histone histone/protein deacetylases during the epigenetic regulation of autophagy, the production of ROS/RNS, acetyl-CoA, NAD+, and S-adenosine methionine (SAM), and illustrate the cross-talk between immunometabolism and epigenetics on macrophage activation. We highlight sirtuins as emerging therapeutic targets for modifying immunometabolism to alter macrophage phenotype and antimicrobial function.
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Affiliation(s)
- Kangling Zhang
- Department of Pharmacology and Toxicology, University of Texas Medical Branch, Galveston, TX, United States
| | - Mark L. Sowers
- Department of Pharmacology and Toxicology, University of Texas Medical Branch, Galveston, TX, United States
| | - Ellie I. Cherryhomes
- Department of Pharmacology and Toxicology, University of Texas Medical Branch, Galveston, TX, United States
| | - Vipul K. Singh
- Department of Pathology and Genomic Medicine, Houston Methodist Research Institute, Weill-Cornell Medicine, Houston, TX, United States
| | - Abhishek Mishra
- Department of Pathology and Genomic Medicine, Houston Methodist Research Institute, Weill-Cornell Medicine, Houston, TX, United States
| | - Blanca I. Restrepo
- University of Texas Health Houston, School of Public Health, Brownsville, TX, United States
| | - Arshad Khan
- Department of Pathology and Genomic Medicine, Houston Methodist Research Institute, Weill-Cornell Medicine, Houston, TX, United States
| | - Chinnaswamy Jagannath
- Department of Pathology and Genomic Medicine, Houston Methodist Research Institute, Weill-Cornell Medicine, Houston, TX, United States
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45
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Lai XL, Xiong WJ, Li LS, Lan MF, Zhang JX, Zhou YT, Niu D, Duan X. Zinc deficiency compromises the maturational competence of porcine oocyte by inducing mitophagy and apoptosis. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 252:114593. [PMID: 36724708 DOI: 10.1016/j.ecoenv.2023.114593] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 01/26/2023] [Accepted: 01/29/2023] [Indexed: 06/18/2023]
Abstract
Zinc, an essential trace mineral, plays a pivotal role in cell proliferation, maintenance of redox homeostasis, apoptosis, and aging. Serum zinc concentrations are reduced in patients with polycystic ovary syndrome (PCOS). However, the underlying mechanism of the effects of zinc deficiency on the female reproductive system, especially oocyte quality, has not been fully elucidated. Thus, we established an in vitro experimental model by adding N,N,N',N'-Tetrakis(2-pyridylmethyl) ethylenediamine (TPEN) into the culture medium, and to determine the potential regulatory function of zinc during porcine oocytes maturation. In the present study, we found that zinc deficiency caused aberrant meiotic progress, accompanied by the disrupted cytoskeleton structure in porcine oocytes. Zinc deficiency impaired mitochondrial function and dynamics, leading to the increase of reactive oxygen species (ROS) and acetylation level of the antioxidative enzyme superoxide dismutase 2 (SOD2), eventually induced the occurrence of oxidative stress and early apoptosis. Moreover, zinc deficiency perturbed cytosolic Ca2+ homeostasis, lipid droplets formation, demonstrating the aberrant mitochondrial function in porcine oocytes. Importantly, we found that zinc deficiency in porcine oocytes induced the occurrence of mitophagy by activating the PTEN-induced kinase 1/Parkin signaling pathway. Collectively, our findings demonstrated that zinc was a critical trace mineral for maintaining oocyte quality by regulating mitochondrial function and autophagy in porcine oocytes.
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Affiliation(s)
- Xin-Le Lai
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, College of Animal Science and Technology & College of Veterinary Medicine, Zhejiang A&F University, Hangzhou 311300, China
| | - Wen-Jie Xiong
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, College of Animal Science and Technology & College of Veterinary Medicine, Zhejiang A&F University, Hangzhou 311300, China
| | - Li-Shu Li
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, College of Animal Science and Technology & College of Veterinary Medicine, Zhejiang A&F University, Hangzhou 311300, China
| | - Meng-Fan Lan
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, College of Animal Science and Technology & College of Veterinary Medicine, Zhejiang A&F University, Hangzhou 311300, China
| | - Jin-Xin Zhang
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, College of Animal Science and Technology & College of Veterinary Medicine, Zhejiang A&F University, Hangzhou 311300, China
| | - Yu-Ting Zhou
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, College of Animal Science and Technology & College of Veterinary Medicine, Zhejiang A&F University, Hangzhou 311300, China
| | - Dong Niu
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, College of Animal Science and Technology & College of Veterinary Medicine, Zhejiang A&F University, Hangzhou 311300, China
| | - Xing Duan
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, College of Animal Science and Technology & College of Veterinary Medicine, Zhejiang A&F University, Hangzhou 311300, China.
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Gastrodin from Gastrodia elata attenuates acute myocardial infarction by suppressing autophagy: Key role of the miR-30a-5p/ATG5 pathway. J Funct Foods 2023. [DOI: 10.1016/j.jff.2023.105429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
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47
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Ortega FG, Rio C, Jahn A, Gayá A, Calvo J, Monjo M, Montes-Worboys A, Molina-Molina M, Sala-Llinas E, Ramis JM. Antifibrotic Effects of Extracellular Vesicles From Umbilical Cord-Mesenchymal Stem Cells on Lung Myofibroblast Cells. Arch Bronconeumol 2023:S0300-2896(23)00020-0. [PMID: 36822880 DOI: 10.1016/j.arbres.2023.01.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 01/06/2023] [Accepted: 01/30/2023] [Indexed: 02/07/2023]
Affiliation(s)
- Francisco G Ortega
- Health Research Institute of the Balearic Islands (IdISBa), Palma, Spain; Cell Therapy and Tissue Engineering Group, Research Institute on Health Sciences (IUNICS), Ctra. Valldemossa km 7.5, 07122 Palma, Spain; IBS Granada, Instituto de Investigación Biosanitaria de Granada, 18012 Granada, Spain; Unidad de Gestión Clínica Cartuja, Distrito Sanitario Granada-Metropolitano, 18013 Granada, Spain
| | - Carlos Rio
- Health Research Institute of the Balearic Islands (IdISBa), Palma, Spain
| | - Andreas Jahn
- Health Research Institute of the Balearic Islands (IdISBa), Palma, Spain
| | - Antonio Gayá
- Health Research Institute of the Balearic Islands (IdISBa), Palma, Spain; Fundació Banc de Sang i Teixits de les Illes Balears (FBSTIB), 07004 Palma, Spain
| | - Javier Calvo
- Health Research Institute of the Balearic Islands (IdISBa), Palma, Spain; Fundació Banc de Sang i Teixits de les Illes Balears (FBSTIB), 07004 Palma, Spain
| | - Marta Monjo
- Health Research Institute of the Balearic Islands (IdISBa), Palma, Spain; Cell Therapy and Tissue Engineering Group, Research Institute on Health Sciences (IUNICS), Ctra. Valldemossa km 7.5, 07122 Palma, Spain; Department of Fundamental Biology and Health Sciences, University of the Balearic Islands (UIB), Ctra. Valldemossa km 7.5, 07122 Palma, Spain.
| | - Ana Montes-Worboys
- ILD Unit, Respiratory Department, University Hospital of Bellvitge, Pneumology Research Group, IDIBELL, L'Hospitalet de Llobregat, Barcelona, Spain; Centro de Investigación en Red de Enfermedades Respiratorias (CIBERES), 28029 Madrid, Spain
| | - Maria Molina-Molina
- ILD Unit, Respiratory Department, University Hospital of Bellvitge, Pneumology Research Group, IDIBELL, L'Hospitalet de Llobregat, Barcelona, Spain; Centro de Investigación en Red de Enfermedades Respiratorias (CIBERES), 28029 Madrid, Spain
| | - Ernest Sala-Llinas
- Health Research Institute of the Balearic Islands (IdISBa), Palma, Spain; ILD Unit, Respiratory Department, University Hospital of Bellvitge, Pneumology Research Group, IDIBELL, L'Hospitalet de Llobregat, Barcelona, Spain; Centro de Investigación en Red de Enfermedades Respiratorias (CIBERES), 28029 Madrid, Spain; Respiratory Department, Hospital Universitari Son Espases, 07010 Palma de Mallorca, Spain
| | - Joana M Ramis
- Health Research Institute of the Balearic Islands (IdISBa), Palma, Spain; Cell Therapy and Tissue Engineering Group, Research Institute on Health Sciences (IUNICS), Ctra. Valldemossa km 7.5, 07122 Palma, Spain; Department of Fundamental Biology and Health Sciences, University of the Balearic Islands (UIB), Ctra. Valldemossa km 7.5, 07122 Palma, Spain.
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Fang Q, Zheng S, Chen Q, Chen L, Yang Y, Wang Y, Zhang H, Chen J. The protective effect of inhibiting mitochondrial fission on the juvenile rat brain following PTZ kindling through inhibiting the BCL2L13/LC3 mitophagy pathway. Metab Brain Dis 2023; 38:453-466. [PMID: 36094724 DOI: 10.1007/s11011-022-01077-3] [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: 05/18/2022] [Accepted: 08/30/2022] [Indexed: 02/04/2023]
Abstract
Maintaining the balance of mitochondrial fission and mitochondrial autophagy on seizures is helpful to find a solution to control seizures and reduce brain injuries. The present study is to investigate the protective effect of inhibiting mitochondrial fission on brain injury in juvenile rat epilepsy induced by pentatetrazol (PTZ) by inhibiting the BCL2L13/LC3-mediated mitophagy pathway. PTZ was injected (40 mg/kg) to induce kindling once every other day, for a total of 15 times. In the PTZ + DMSO (DMSO), PTZ + Mdivi-1 (Mdivi-1), and PTZ + WY14643 (WY14643) groups, rats were pretreated with DMSO, Mdivi-1 and WY14643 for half an hour prior to PTZ injection. The seizure attacks of young rats were observed for 30 min after model establishment. The Morris water maze (MWM) was used to test the cognition of experimental rats. After the test, the numbers of NeuN(+) neurons and GFAP(+) astrocytes were observed and counted by immunofluorescence (IF). The protein expression levels of Drp1, BCL2L13, LC3 and caspase 3 in the hippocampus of young rats were detected by immunohistochemistry (IHC) and Western blotting (WB). Compared with the PTZ and DMSO groups, the seizure latency in the Mdivi-1 group was longer (P < 0.01), and the severity degree and frequency of seizures were lower (P < 0.01). The MWM test showed that the incubation periods of crossing the platform in the Mdivi-1 group was significantly shorter. The number of platform crossings, the platform stay time, and the ratio of residence time/total stay time were significantly increased in the Mdivi-1 group (P < 0.01). The IF results showed that the number of NeuN(+) neurons in the Mdivi-1 group was greater, while the number of GFAP(+) astrocytes was lower. IHC and WB showed that the average optical density (AOD) and relative protein expression levels of Drp1, BCL2L13, LC3 and caspase 3 in the hippocampi of rats in the Mdivi-1 group were higher (P < 0.05). The above results in the WY14643 group were opposite to those in the Mdivi-1 group. Inhibition of mitochondrial fission could reduce seizure attacks, protect injured neurons, and improve cognition following PTZ-induced epilepsy by inhibiting mitochondrial autophagy mediated by the BCL2L13/LC3 mitophagy pathway.
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Affiliation(s)
- Qiong Fang
- Department of Pediatrics, Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, 134 East Street, Gulou District, Fuzhou, 350001, Fujian Province, China.
| | - Shaojuan Zheng
- Department of Pediatrics, Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, 134 East Street, Gulou District, Fuzhou, 350001, Fujian Province, China
| | - Qiaobin Chen
- Department of Pediatrics, Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, 134 East Street, Gulou District, Fuzhou, 350001, Fujian Province, China.
| | - Lang Chen
- Department of Pediatrics, Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, 134 East Street, Gulou District, Fuzhou, 350001, Fujian Province, China
| | - Yating Yang
- Department of Pediatrics, Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, 134 East Street, Gulou District, Fuzhou, 350001, Fujian Province, China
| | - Ying Wang
- Department of clinical medicine, Fujian Medical University, Fuzhou, 350001, Fujian Province, China
| | - Huixia Zhang
- Department of clinical medicine, Fujian Medical University, Fuzhou, 350001, Fujian Province, China
| | - Jiafan Chen
- Department of clinical medicine, Fujian Medical University, Fuzhou, 350001, Fujian Province, China
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Wen J, Wang Y, Wang C, Yuan M, Chen F, Zou Q, Cai Z, Zhao B. Dietary High-Fat Promotes Cognitive Impairment by Suppressing Mitophagy. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2023; 2023:4822767. [PMID: 36718278 PMCID: PMC9884172 DOI: 10.1155/2023/4822767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 01/06/2023] [Accepted: 01/11/2023] [Indexed: 01/22/2023]
Abstract
Dietary habits contribute to the characteristics of Alzheimer's disease (AD) and cognitive impairment, which are partly induced by the accumulation of hyperphosphorylated Tau, a microtubule-associated protein. In mice, a fat-rich diet facilitates cognitive dysfunction. However, the mechanism by which dietary fat damages the brain remains unclear. In this study, 13-month-old C57BL/6 mice were fed a normal or high-fat diet (HFD) for 6 months. Neuro-2a cells were incubated with the normal medium or palmitic acid (200 μM). Spatial memory was assessed utilizing a behavioral test. Further, western blotting and immunofluorescence techniques were used to determine the levels of mitophagy-related proteins. The synaptic morphology and phosphorylation of Tau proteins were also evaluated. Administration of HFD decreased the expression of synaptophysin and brain-derived neurotrophic factor expression, leading to significant damage to neurons. Tau protein hyperphosphorylation was detected at different loci both in vivo and in vitro. Significantly impaired learning and memory abilities, accompanied by impaired mitophagy-related processes, were observed in mice fed with HFD as compared to mice fed with normal food. In conclusion, high fatty-acid intake hinders mitophagy and upregulates Tau protein phosphorylation, including age-related synaptic dysfunction, which leads to cognitive decline.
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Affiliation(s)
- Jie Wen
- Department and Institute of Neurology, Guangdong Medical University, Zhanjiang, Guangdong 524001, China
- Guangdong Key Laboratory of Aging-Related Cardiac and Cerebral Diseases, Zhanjiang, Guangdong 524001, China
- Chongqing Key Laboratory of Neurodegenerative Diseases, Yuzhong District, Chongqing 400013, China
- Department of Neurology, Chongqing General Hospital, Yuzhong District, Chongqing 400013, China
| | - Yangyang Wang
- Chongqing Key Laboratory of Neurodegenerative Diseases, Yuzhong District, Chongqing 400013, China
- Department of Neurology, Chongqing General Hospital, Yuzhong District, Chongqing 400013, China
| | - Chuanling Wang
- Chongqing Key Laboratory of Neurodegenerative Diseases, Yuzhong District, Chongqing 400013, China
- Department of Neurology, Chongqing General Hospital, Yuzhong District, Chongqing 400013, China
- Chongqing Medical University, Yuzhong District, Chongqing 400016, China
| | - Minghao Yuan
- Chongqing Key Laboratory of Neurodegenerative Diseases, Yuzhong District, Chongqing 400013, China
- Department of Neurology, Chongqing General Hospital, Yuzhong District, Chongqing 400013, China
- Chongqing Medical University, Yuzhong District, Chongqing 400016, China
| | - Fei Chen
- Chongqing Key Laboratory of Neurodegenerative Diseases, Yuzhong District, Chongqing 400013, China
- Department of Neurology, Chongqing General Hospital, Yuzhong District, Chongqing 400013, China
- Chongqing Medical University, Yuzhong District, Chongqing 400016, China
| | - Qian Zou
- Chongqing Key Laboratory of Neurodegenerative Diseases, Yuzhong District, Chongqing 400013, China
- Department of Neurology, Chongqing General Hospital, Yuzhong District, Chongqing 400013, China
| | - Zhiyou Cai
- Chongqing Key Laboratory of Neurodegenerative Diseases, Yuzhong District, Chongqing 400013, China
- Department of Neurology, Chongqing General Hospital, Yuzhong District, Chongqing 400013, China
| | - Bin Zhao
- Department and Institute of Neurology, Guangdong Medical University, Zhanjiang, Guangdong 524001, China
- Guangdong Key Laboratory of Aging-Related Cardiac and Cerebral Diseases, Zhanjiang, Guangdong 524001, China
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50
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Gautam S, Zhang L, Lee C, Arnaoutova I, Chen HD, Resaz R, Eva A, Mansfield BC, Chou JY. Molecular mechanism underlying impaired hepatic autophagy in glycogen storage disease type Ib. Hum Mol Genet 2023; 32:262-275. [PMID: 35961004 PMCID: PMC10148728 DOI: 10.1093/hmg/ddac197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 07/25/2022] [Accepted: 08/10/2022] [Indexed: 01/18/2023] Open
Abstract
Type Ib glycogen storage disease (GSD-Ib) is caused by a deficiency in the glucose-6-phosphate (G6P) transporter (G6PT) that translocates G6P from the cytoplasm into the endoplasmic reticulum lumen, where the intraluminal G6P is hydrolyzed to glucose by glucose-6-phosphatase-α (G6Pase-α). Clinically, GSD-Ib patients manifest a metabolic phenotype of impaired blood glucose homeostasis and a long-term risk of hepatocellular adenoma/carcinoma (HCA/HCC). Studies have shown that autophagy deficiency contributes to hepatocarcinogenesis. In this study, we show that G6PT deficiency leads to impaired hepatic autophagy evident from attenuated expression of many components of the autophagy network, decreased autophagosome formation and reduced autophagy flux. The G6PT-deficient liver displayed impaired sirtuin 1 (SIRT1) and AMP-activated protein kinase (AMPK) signaling, along with reduced expression of SIRT1, forkhead boxO3a (FoxO3a), liver kinase B-1 (LKB1) and the active p-AMPK. Importantly, we show that overexpression of either SIRT1 or LKB1 in G6PT-deficient liver restored autophagy and SIRT1/FoxO3a and LKB1/AMPK signaling. The hepatosteatosis in G6PT-deficient liver decreased SIRT1 expression. LKB1 overexpression reduced hepatic triglyceride levels, providing a potential link between LKB1/AMPK signaling upregulation and the increase in SIRT1 expression. In conclusion, downregulation of SIRT1/FoxO3a and LKB1/AMPK signaling underlies impaired hepatic autophagy which may contribute to HCA/HCC development in GSD-Ib. Understanding this mechanism may guide future therapies.
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Affiliation(s)
- Sudeep Gautam
- Section on Cellular Differentiation, Division of Translational Medicine, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20802, USA
| | - Lisa Zhang
- Section on Cellular Differentiation, Division of Translational Medicine, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20802, USA
| | - Cheol Lee
- Section on Cellular Differentiation, Division of Translational Medicine, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20802, USA
| | - Irina Arnaoutova
- Section on Cellular Differentiation, Division of Translational Medicine, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20802, USA
| | - Hung Dar Chen
- Section on Cellular Differentiation, Division of Translational Medicine, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20802, USA
| | - Roberta Resaz
- Istituto Giannina Gaslini, Largo Gaslini 5, 16147, Genoa, Italy
| | - Alessandra Eva
- Istituto Giannina Gaslini, Largo Gaslini 5, 16147, Genoa, Italy
| | - Brian C Mansfield
- Section on Cellular Differentiation, Division of Translational Medicine, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20802, USA
| | - Janice Y Chou
- Section on Cellular Differentiation, Division of Translational Medicine, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20802, USA
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