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Li X, Han Y, Meng Y, Yin L. Small RNA-big impact: exosomal miRNAs in mitochondrial dysfunction in various diseases. RNA Biol 2024; 21:1-20. [PMID: 38174992 PMCID: PMC10773649 DOI: 10.1080/15476286.2023.2293343] [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] [Accepted: 12/05/2023] [Indexed: 01/05/2024] Open
Abstract
Mitochondria are multitasking organelles involved in maintaining the cell homoeostasis. Beyond its well-established role in cellular bioenergetics, mitochondria also function as signal organelles to propagate various cellular outcomes. However, mitochondria have a self-destructive arsenal of factors driving the development of diseases caused by mitochondrial dysfunction. Extracellular vesicles (EVs), a heterogeneous group of membranous nano-sized vesicles, are present in a variety of bodily fluids. EVs serve as mediators for intercellular interaction. Exosomes are a class of small EVs (30-100 nm) released by most cells. Exosomes carry various cargo including microRNAs (miRNAs), a class of short noncoding RNAs. Recent studies have closely associated exosomal miRNAs with various human diseases, including diseases caused by mitochondrial dysfunction, which are a group of complex multifactorial diseases and have not been comprehensively described. In this review, we first briefly introduce the characteristics of EVs. Then, we focus on possible mechanisms regarding exosome-mitochondria interaction through integrating signalling networks. Moreover, we summarize recent advances in the knowledge of the role of exosomal miRNAs in various diseases, describing how mitochondria are changed in disease status. Finally, we propose future research directions to provide a novel therapeutic strategy that could slow the disease progress mediated by mitochondrial dysfunction.
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Affiliation(s)
- Xiaqing Li
- Institute of Nephrology and Blood Purification, The First Affiliated Hospital, Jinan University Guangzhou, Guangdong, China
- Central laboratory, The Fifth Hospital Affiliated to Jinan University, Heyuan, China
| | - Yi Han
- Traditional Chinese Medicine Department, People’s Hospital of Yanjiang District, Ziyang, Sichuan, China
| | - Yu Meng
- Institute of Nephrology and Blood Purification, The First Affiliated Hospital, Jinan University Guangzhou, Guangdong, China
- Central laboratory, The Fifth Hospital Affiliated to Jinan University, Heyuan, China
| | - Lianghong Yin
- Institute of Nephrology and Blood Purification, The First Affiliated Hospital, Jinan University Guangzhou, Guangdong, China
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2
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Liang JY, Wei HJ, Tang YY. Isthmin: A multifunctional secretion protein. Cytokine 2024; 173:156423. [PMID: 37979212 DOI: 10.1016/j.cyto.2023.156423] [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: 09/01/2023] [Revised: 10/29/2023] [Accepted: 11/01/2023] [Indexed: 11/20/2023]
Abstract
Isthmin is a polypeptide secreted by adipocytes that was first detected in Xenopus gastrula embryos. Recent studies have focused on the biological functions of isthmin in growth and development, angiogenesis, and metabolism. Distinct spatiotemporal expression of isthmin-1 (ISM-1) was observed during growth and development. ISM-1 plays an important role in the occurrence and development of cancer by regulating cell proliferation, migration, angiogenesis, and immune microenvironments. Moreover, ISM-1, as a newly identified insulin-like adipokine, increases adipocyte glucose uptake and inhibits hepatic lipid synthesis. However, the biological function of ISM-1 remains largely unknown. In this review, we highlight the structure and physiological functions of isthmin and explore its application potential, contributing to a better understanding of its function and providing prevention and treatment strategies for various diseases.
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Affiliation(s)
- Jin-Yu Liang
- Department of Physiology, Hengyang Medical School, University of South China, 28 W Changsheng Road, Hengyang 421001, Hunan, PR China; Institute of Neuroscience, Hengyang Medical School, University of South China, Hengyang 421001, Hunan, PR China
| | - Hai-Jun Wei
- Department of Physiology, Hunan Polytechnic of Environment and Biology, Hengyang 421001, Hunan, PR China
| | - Yi-Yun Tang
- Department of Physiology, Hengyang Medical School, University of South China, 28 W Changsheng Road, Hengyang 421001, Hunan, PR China; Institute of Neuroscience, Hengyang Medical School, University of South China, Hengyang 421001, Hunan, PR China.
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3
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Monterde B, Rojano E, Córdoba-Caballero J, Seoane P, Perkins JR, Medina MÁ, Ranea JAG. Integrating differential expression, co-expression and gene network analysis for the identification of common genes associated with tumor angiogenesis deregulation. J Biomed Inform 2023; 144:104421. [PMID: 37315831 DOI: 10.1016/j.jbi.2023.104421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 06/05/2023] [Accepted: 06/09/2023] [Indexed: 06/16/2023]
Abstract
Angiogenesis is essential for tumor growth and cancer metastasis. Identifying the molecular pathways involved in this process is the first step in the rational design of new therapeutic strategies to improve cancer treatment. In recent years, RNA-seq data analysis has helped to determine the genetic and molecular factors associated with different types of cancer. In this work we performed integrative analysis using RNA-seq data from human umbilical vein endothelial cells (HUVEC) and patients with angiogenesis-dependent diseases to find genes that serve as potential candidates to improve the prognosis of tumor angiogenesis deregulation and understand how this process is orchestrated at the genetic and molecular level. We downloaded four RNA-seq datasets (including cellular models of tumor angiogenesis and ischaemic heart disease) from the Sequence Read Archive. Our integrative analysis includes a first step to determine differentially and co-expressed genes. For this, we used the ExpHunter Suite, an R package that performs differential expression, co-expression and functional analysis of RNA-seq data. We used both differentially and co-expressed genes to explore the human gene interaction network and determine which genes were found in the different datasets that may be key for the angiogenesis deregulation. Finally, we performed drug repositioning analysis to find potential targets related to angiogenesis inhibition. We found that that among the transcriptional alterations identified, SEMA3D and IL33 genes are deregulated in all datasets. Microenvironment remodeling, cell cycle, lipid metabolism and vesicular transport are the main molecular pathways affected. In addition to this, interacting genes are involved in intracellular signaling pathways, especially in immune system and semaphorins, respiratory electron transport and fatty acid metabolism. The methodology presented here can be used for finding common transcriptional alterations in other genetically-based diseases.
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Affiliation(s)
- Beatriz Monterde
- Departamento de Señalización Celular y Molecular, Instituto de Biomedicina y Biotecnología de Cantabria, Universidad de Cantabria-CSIC., C/Albert Einstein, 22, Santander, 39011, Spain
| | - Elena Rojano
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de Málaga, Bulevar Louis Pasteur, 31, Málaga, 29010, Spain; Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina (IBIMA-Plataforma BIONAND), C/ Severo Ochoa, 35, Parque Tecnológico de Andalucía (PTA), Campanillas, Málaga, 29590, Spain
| | - José Córdoba-Caballero
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de Málaga, Bulevar Louis Pasteur, 31, Málaga, 29010, Spain; Instituto de Investigación e Innovación Biomédica de Cádiz (INiBICA), Avda. Ana de Viya, 21, Cádiz, 11009, Spain
| | - Pedro Seoane
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de Málaga, Bulevar Louis Pasteur, 31, Málaga, 29010, Spain; Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina (IBIMA-Plataforma BIONAND), C/ Severo Ochoa, 35, Parque Tecnológico de Andalucía (PTA), Campanillas, Málaga, 29590, Spain; CIBER de Enfermedades Raras (CIBERER), Avda. Monforte de Lemos, 3-5, Pabellón 11, Planta 0, Madrid, 28029, Spain.
| | - James R Perkins
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de Málaga, Bulevar Louis Pasteur, 31, Málaga, 29010, Spain; Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina (IBIMA-Plataforma BIONAND), C/ Severo Ochoa, 35, Parque Tecnológico de Andalucía (PTA), Campanillas, Málaga, 29590, Spain; CIBER de Enfermedades Raras (CIBERER), Avda. Monforte de Lemos, 3-5, Pabellón 11, Planta 0, Madrid, 28029, Spain
| | - Miguel Ángel Medina
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de Málaga, Bulevar Louis Pasteur, 31, Málaga, 29010, Spain; Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina (IBIMA-Plataforma BIONAND), C/ Severo Ochoa, 35, Parque Tecnológico de Andalucía (PTA), Campanillas, Málaga, 29590, Spain; CIBER de Enfermedades Raras (CIBERER), Avda. Monforte de Lemos, 3-5, Pabellón 11, Planta 0, Madrid, 28029, Spain
| | - Juan A G Ranea
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de Málaga, Bulevar Louis Pasteur, 31, Málaga, 29010, Spain; Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina (IBIMA-Plataforma BIONAND), C/ Severo Ochoa, 35, Parque Tecnológico de Andalucía (PTA), Campanillas, Málaga, 29590, Spain; CIBER de Enfermedades Raras (CIBERER), Avda. Monforte de Lemos, 3-5, Pabellón 11, Planta 0, Madrid, 28029, Spain; Spanish National Bioinformatics Institute (INB/ELIXIR-ES), Instituto de Salud Carlos III (ISCIII), C/ Sinesio Delgado, 4, Madrid, 28029, Spain
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4
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Zhou YX, Wei J, Deng G, Hu A, Sun PY, Zhao X, Song BL, Luo J. Delivery of low-density lipoprotein from endocytic carriers to mitochondria supports steroidogenesis. Nat Cell Biol 2023:10.1038/s41556-023-01160-6. [PMID: 37277481 DOI: 10.1038/s41556-023-01160-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 05/01/2023] [Indexed: 06/07/2023]
Abstract
The low-density lipoprotein (LDL) is a major cholesterol carrier in circulation and is internalized into cells through LDL receptor (LDLR)-mediated endocytosis. The LDLR protein is highly expressed in the steroidogenic organs and LDL cholesterol is an important source for steroidogenesis. Cholesterol must be transported into the mitochondria, where steroid hormone biosynthesis initiates. However, how LDL cholesterol is conveyed to the mitochondria is poorly defined. Here, through genome-wide small hairpin RNA screening, we find that the outer mitochondrial membrane protein phospholipase D6 (PLD6), which hydrolyses cardiolipin to phosphatidic acid, accelerates LDLR degradation. PLD6 promotes the entrance of LDL and LDLR into the mitochondria, where LDLR is degraded by mitochondrial proteases and LDL-carried cholesterol is used for steroid hormone biosynthesis. Mechanistically, the outer mitochondrial membrane protein CISD2 binds to the cytosolic tail of LDLR and tethers LDLR+ vesicles to the mitochondria. The fusogenic lipid phosphatidic acid generated by PLD6 facilitates the membrane fusion of LDLR+ vesicles with the mitochondria. This intracellular transport pathway of LDL-LDLR bypasses the lysosomes and delivers cholesterol to the mitochondria for steroidogenesis.
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Affiliation(s)
- Yu-Xia Zhou
- College of Life Sciences, Hubei Key Laboratory of Cell Homeostasis, Taikang Center for Life and Medical Sciences, Taikang Medical School, Wuhan University, Wuhan, China
| | - Jian Wei
- College of Life Sciences, Hubei Key Laboratory of Cell Homeostasis, Taikang Center for Life and Medical Sciences, Taikang Medical School, Wuhan University, Wuhan, China
| | - Gang Deng
- College of Life Sciences, Hubei Key Laboratory of Cell Homeostasis, Taikang Center for Life and Medical Sciences, Taikang Medical School, Wuhan University, Wuhan, China
| | - Ao Hu
- College of Life Sciences, Hubei Key Laboratory of Cell Homeostasis, Taikang Center for Life and Medical Sciences, Taikang Medical School, Wuhan University, Wuhan, China
| | - Pu-Yu Sun
- College of Life Sciences, Hubei Key Laboratory of Cell Homeostasis, Taikang Center for Life and Medical Sciences, Taikang Medical School, Wuhan University, Wuhan, China
| | - Xiaolu Zhao
- College of Life Sciences, Hubei Key Laboratory of Cell Homeostasis, Taikang Center for Life and Medical Sciences, Taikang Medical School, Wuhan University, Wuhan, China
| | - Bao-Liang Song
- College of Life Sciences, Hubei Key Laboratory of Cell Homeostasis, Taikang Center for Life and Medical Sciences, Taikang Medical School, Wuhan University, Wuhan, China.
| | - Jie Luo
- College of Life Sciences, Hubei Key Laboratory of Cell Homeostasis, Taikang Center for Life and Medical Sciences, Taikang Medical School, Wuhan University, Wuhan, China.
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5
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Sahiri V, Caron J, Roger E, Desterke C, Ghachem K, Mohamadou I, Serre J, Prakoura N, Fellahi S, Placier S, Adriouch S, Zhang L, Chadjichristos CE, Chatziantoniou C, Lorenzo HK, Boffa JJ. The Angiogenesis Inhibitor Isthmin-1 (ISM1) Is Overexpressed in Experimental Models of Glomerulopathy and Impairs the Viability of Podocytes. Int J Mol Sci 2023; 24:ijms24032723. [PMID: 36769045 PMCID: PMC9916724 DOI: 10.3390/ijms24032723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 12/28/2022] [Accepted: 12/30/2022] [Indexed: 02/05/2023] Open
Abstract
Focal segmental glomerulosclerosis (FSGS) is a major cause of end-stage renal disease and remains without specific treatment. To identify new events during FSGS progression, we used an experimental model of FSGS associated with nephroangiosclerosis in rats injected with L-NAME (Nω-nitro-L-arginine methyl ester). After transcriptomic analysis we focused our study on the role of Isthmin-1 (ISM1, an anti-angiogenic protein involved in endothelial cell apoptosis. We studied the renal expression of ISM1 in L-NAME rats and other models of proteinuria, particularly at the glomerular level. In the L-NAME model, withdrawal of the stimulus partially restored basal ISM1 levels, along with an improvement in renal function. In other four animal models of proteinuria, ISM1 was overexpressed and localized in podocytes while the renal function was degraded. Together these facts suggest that the glomerular expression of ISM1 correlates directly with the progression-recovery of the disease. Further in vitro experiments demonstrated that ISM1 co-localized with its receptors GRP78 and integrin αvβ5 on podocytes. Treatment of human podocytes with low doses of recombinant ISM1 decreased cell viability and induced caspase activation. Stronger ISM1 stimuli in podocytes dropped mitochondrial membrane potential and induced nuclear translocation of apoptosis-inducing factor (AIF). Our results suggest that ISM1 participates in the progression of glomerular diseases and promotes podocyte apoptosis in two different complementary ways: one caspase-dependent and one caspase-independent associated with mitochondrial destabilization.
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Affiliation(s)
- Virgilia Sahiri
- Sorbonne Université, UMR_S 1155, 75006 Paris, France
- Institut National de la Santé et de la Recherche Médicale UMR_S 1155, 75020 Paris, France
| | - Jonathan Caron
- Sorbonne Université, UMR_S 1155, 75006 Paris, France
- Institut National de la Santé et de la Recherche Médicale UMR_S 1155, 75020 Paris, France
| | - Elena Roger
- Sorbonne Université, UMR_S 1155, 75006 Paris, France
- Institut National de la Santé et de la Recherche Médicale UMR_S 1155, 75020 Paris, France
| | - Christophe Desterke
- Université Paris-Saclay, Faculté de Médecine, 94270 Le Kremlin-Bicêtre, France
- Université Paris Saclay, INSERM UA/09 UMR-S 935, 94800 Villejuif, France
| | - Khalil Ghachem
- Sorbonne Université, UMR_S 1155, 75006 Paris, France
- Institut National de la Santé et de la Recherche Médicale UMR_S 1155, 75020 Paris, France
| | - Inna Mohamadou
- Sorbonne Université, UMR_S 1155, 75006 Paris, France
- Institut National de la Santé et de la Recherche Médicale UMR_S 1155, 75020 Paris, France
| | - Justine Serre
- Sorbonne Université, UMR_S 1155, 75006 Paris, France
- Institut National de la Santé et de la Recherche Médicale UMR_S 1155, 75020 Paris, France
| | - Niki Prakoura
- Institut National de la Santé et de la Recherche Médicale UMR_S 1155, 75020 Paris, France
| | - Soraya Fellahi
- Inserm UMR_S 938, Centre de Recherche Saint-Antoine, Institut Hospitalo-Universitaire de Cardio-Métabolisme et Nutrition (ICAN), Sorbonne Université, 75013 Paris, France
| | - Sandrine Placier
- Sorbonne Université, UMR_S 1155, 75006 Paris, France
- Institut National de la Santé et de la Recherche Médicale UMR_S 1155, 75020 Paris, France
| | - Sahil Adriouch
- UNIROUEN, INSERM, U1234, Pathophysiology, Autoimmunity, Neuromuscular Diseases and Regenerative THERapies (PANTHER), Normandie University, 76000 Rouen, France
| | - Lu Zhang
- Division of Nephrology, Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of Chinese Medicine, Nanjing 210004, China
| | - Christos E. Chadjichristos
- Sorbonne Université, UMR_S 1155, 75006 Paris, France
- Institut National de la Santé et de la Recherche Médicale UMR_S 1155, 75020 Paris, France
| | - Christos Chatziantoniou
- Sorbonne Université, UMR_S 1155, 75006 Paris, France
- Institut National de la Santé et de la Recherche Médicale UMR_S 1155, 75020 Paris, France
| | - Hans Kristian Lorenzo
- Université Paris Saclay, INSERM UA/09 UMR-S 935, 94800 Villejuif, France
- Department of Nephrology, Bicêtre Hospital, AP-HP, 94270 Le Kremlin-Bicêtre, France
- Université Paris Saclay, INSERM UMR_S 1197, 94803 Villejuif, France
| | - Jean-Jacques Boffa
- Sorbonne Université, UMR_S 1155, 75006 Paris, France
- Institut National de la Santé et de la Recherche Médicale UMR_S 1155, 75020 Paris, France
- Département Néphrologie et Dialyses, Tenon Hospital, AP-HP, 75020 Paris, France
- Correspondence:
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de Oliveira Freitas Machado C, Schafranek M, Brüggemann M, Hernández Cañás M, Keller M, Di Liddo A, Brezski A, Blümel N, Arnold B, Bremm A, Wittig I, Jaé N, McNicoll F, Dimmeler S, Zarnack K, Müller-McNicoll M. Poison cassette exon splicing of SRSF6 regulates nuclear speckle dispersal and the response to hypoxia. Nucleic Acids Res 2023; 51:870-890. [PMID: 36620874 PMCID: PMC9881134 DOI: 10.1093/nar/gkac1225] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 12/06/2022] [Accepted: 12/10/2022] [Indexed: 01/10/2023] Open
Abstract
Hypoxia induces massive changes in alternative splicing (AS) to adapt cells to the lack of oxygen. Here, we identify the splicing factor SRSF6 as a key factor in the AS response to hypoxia. The SRSF6 level is strongly reduced in acute hypoxia, which serves a dual purpose: it allows for exon skipping and triggers the dispersal of nuclear speckles. Our data suggest that cells use dispersal of nuclear speckles to reprogram their gene expression during hypoxic adaptation and that SRSF6 plays an important role in cohesion of nuclear speckles. Down-regulation of SRSF6 is achieved through inclusion of a poison cassette exon (PCE) promoted by SRSF4. Removing the PCE 3' splice site using CRISPR/Cas9 abolishes SRSF6 reduction in hypoxia. Aberrantly high SRSF6 levels in hypoxia attenuate hypoxia-mediated AS and impair dispersal of nuclear speckles. As a consequence, proliferation and genomic instability are increased, while the stress response is suppressed. The SRSF4-PCE-SRSF6 hypoxia axis is active in different cancer types, and high SRSF6 expression in hypoxic tumors correlates with a poor prognosis. We propose that the ultra-conserved PCE of SRSF6 acts as a tumor suppressor and that its inclusion in hypoxia is crucial to reduce SRSF6 levels. This may prevent tumor cells from entering the metastatic route of hypoxia adaptation.
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Affiliation(s)
- Camila de Oliveira Freitas Machado
- Institute of Molecular Biosciences, Goethe University, Frankfurt am Main, Germany,Institute of Cardiovascular Regeneration, Goethe University, Frankfurt am Main, Germany
| | - Michal Schafranek
- Institute of Molecular Biosciences, Goethe University, Frankfurt am Main, Germany
| | - Mirko Brüggemann
- Institute of Molecular Biosciences, Goethe University, Frankfurt am Main, Germany,Buchmann Institute for Molecular Life Sciences (BMLS), Frankfurt am Main, Germany
| | | | - Mario Keller
- Institute of Molecular Biosciences, Goethe University, Frankfurt am Main, Germany,Buchmann Institute for Molecular Life Sciences (BMLS), Frankfurt am Main, Germany
| | - Antonella Di Liddo
- Buchmann Institute for Molecular Life Sciences (BMLS), Frankfurt am Main, Germany
| | - Andre Brezski
- Institute of Molecular Biosciences, Goethe University, Frankfurt am Main, Germany,Buchmann Institute for Molecular Life Sciences (BMLS), Frankfurt am Main, Germany
| | - Nicole Blümel
- Institute of Molecular Biosciences, Goethe University, Frankfurt am Main, Germany
| | - Benjamin Arnold
- Institute of Molecular Biosciences, Goethe University, Frankfurt am Main, Germany
| | - Anja Bremm
- Institute of Biochemistry II, Goethe University, Frankfurt am Main, Germany
| | - Ilka Wittig
- Functional Proteomics, Institute of Cardiovascular Physiology, Goethe University, Frankfurt am Main, Germany
| | - Nicolas Jaé
- Institute of Cardiovascular Regeneration, Goethe University, Frankfurt am Main, Germany
| | - François McNicoll
- Institute of Molecular Biosciences, Goethe University, Frankfurt am Main, Germany
| | - Stefanie Dimmeler
- Institute of Cardiovascular Regeneration, Goethe University, Frankfurt am Main, Germany
| | - Kathi Zarnack
- Correspondence may also be addressed to Kathi Zarnack.
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Lam TYW, Nguyen N, Peh HY, Shanmugasundaram M, Chandna R, Tee JH, Ong CB, Hossain MZ, Venugopal S, Zhang T, Xu S, Qiu T, Kong WT, Chakarov S, Srivastava S, Liao W, Kim JS, Teh M, Ginhoux F, Fred Wong WS, Ge R. ISM1 protects lung homeostasis via cell-surface GRP78-mediated alveolar macrophage apoptosis. Proc Natl Acad Sci U S A 2022; 119:e2019161119. [PMID: 35046017 PMCID: PMC8794848 DOI: 10.1073/pnas.2019161119] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Accepted: 11/20/2021] [Indexed: 12/18/2022] Open
Abstract
Alveolar macrophages (AMs) are critical for lung immune defense and homeostasis. They are orchestrators of chronic obstructive pulmonary disease (COPD), with their number significantly increased and functions altered in COPD. However, it is unclear how AM number and function are controlled in a healthy lung and if changes in AMs without environmental assault are sufficient to trigger lung inflammation and COPD. We report here that absence of isthmin 1 (ISM1) in mice (Ism1-/- ) leads to increase in both AM number and functional heterogeneity, with enduring lung inflammation, progressive emphysema, and significant lung function decline, phenotypes similar to human COPD. We reveal that ISM1 is a lung resident anti-inflammatory protein that selectively triggers the apoptosis of AMs that harbor high levels of its receptor cell-surface GRP78 (csGRP78). csGRP78 is present at a heterogeneous level in the AMs of a healthy lung, but csGRP78high AMs are expanded in Ism1-/- mice, cigarette smoke (CS)-induced COPD mice, and human COPD lung, making these cells the prime targets of ISM1-mediated apoptosis. We show that csGRP78high AMs mostly express MMP-12, hence proinflammatory. Intratracheal delivery of recombinant ISM1 (rISM1) depleted csGRP78high AMs in both Ism1-/- and CS-induced COPD mice, blocked emphysema development, and preserved lung function. Consistently, ISM1 expression in human lungs positively correlates with AM apoptosis, suggesting similar function of ISM1-csGRP78 in human lungs. Our findings reveal that AM apoptosis regulation is an important physiological mechanism for maintaining lung homeostasis and demonstrate the potential of pulmonary-delivered rISM1 to target csGRP78 as a therapeutic strategy for COPD.
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Affiliation(s)
- Terence Y W Lam
- Department of Biological Sciences, Faculty of Science, National University of Singapore, Singapore 117543, Singapore
| | - Ngan Nguyen
- Department of Biological Sciences, Faculty of Science, National University of Singapore, Singapore 117543, Singapore
| | - Hong Yong Peh
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117600, Singapore
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115
| | - Mahalakshmi Shanmugasundaram
- Department of Biological Sciences, Faculty of Science, National University of Singapore, Singapore 117543, Singapore
| | - Ritu Chandna
- Department of Biological Sciences, Faculty of Science, National University of Singapore, Singapore 117543, Singapore
| | - Jong Huat Tee
- Department of Biological Sciences, Faculty of Science, National University of Singapore, Singapore 117543, Singapore
| | - Chee Bing Ong
- Institute of Molecular and Cell Biology, Agency for Science, Technology, and Research, Singapore 138673, Singapore
| | - Md Zakir Hossain
- Cancer Science Institute of Singapore, National University of Singapore, Singapore 117599, Singapore
| | - Shruthi Venugopal
- Department of Biological Sciences, Faculty of Science, National University of Singapore, Singapore 117543, Singapore
| | - Tianyi Zhang
- Department of Biological Sciences, Faculty of Science, National University of Singapore, Singapore 117543, Singapore
| | - Simin Xu
- Department of Biological Sciences, Faculty of Science, National University of Singapore, Singapore 117543, Singapore
| | - Tao Qiu
- Department of Biological Sciences, Faculty of Science, National University of Singapore, Singapore 117543, Singapore
| | - Wan Ting Kong
- Singapore Immunology Network, Agency for Science, Technology, and Research, Singapore 138648, Singapore
| | - Svetoslav Chakarov
- Singapore Immunology Network, Agency for Science, Technology, and Research, Singapore 138648, Singapore
| | - Supriya Srivastava
- Department of Medicine, National University Hospital, Singapore 119228, Singapore
| | - Wupeng Liao
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117600, Singapore
| | - Jin-Soo Kim
- Center for Genome Engineering, Institute for Basic Science, Seoul 08826, South Korea
- Department of Chemistry, Seoul National University, Seoul 08826, South Korea
| | - Ming Teh
- Department of Pathology, National University Hospital, Singapore 119228
| | - Florent Ginhoux
- Singapore Immunology Network, Agency for Science, Technology, and Research, Singapore 138648, Singapore
| | - W S Fred Wong
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117600, Singapore
- Immunology Program, Life Science Institute, National University of Singapore, Singapore 117456, Singapore
- Singapore-Hebrew University of Jerusalem Alliance for Research and Enterprise, National University of Singapore, Singapore 138602, Singapore
| | - Ruowen Ge
- Department of Biological Sciences, Faculty of Science, National University of Singapore, Singapore 117543, Singapore;
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8
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Claridge B, Lozano J, Poh QH, Greening DW. Development of Extracellular Vesicle Therapeutics: Challenges, Considerations, and Opportunities. Front Cell Dev Biol 2021; 9:734720. [PMID: 34616741 PMCID: PMC8488228 DOI: 10.3389/fcell.2021.734720] [Citation(s) in RCA: 83] [Impact Index Per Article: 27.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 07/30/2021] [Indexed: 12/12/2022] Open
Abstract
Extracellular vesicles (EVs) hold great promise as therapeutic modalities due to their endogenous characteristics, however, further bioengineering refinement is required to address clinical and commercial limitations. Clinical applications of EV-based therapeutics are being trialed in immunomodulation, tissue regeneration and recovery, and as delivery vectors for combination therapies. Native/biological EVs possess diverse endogenous properties that offer stability and facilitate crossing of biological barriers for delivery of molecular cargo to cells, acting as a form of intercellular communication to regulate function and phenotype. Moreover, EVs are important components of paracrine signaling in stem/progenitor cell-based therapies, are employed as standalone therapies, and can be used as a drug delivery system. Despite remarkable utility of native/biological EVs, they can be improved using bio/engineering approaches to further therapeutic potential. EVs can be engineered to harbor specific pharmaceutical content, enhance their stability, and modify surface epitopes for improved tropism and targeting to cells and tissues in vivo. Limitations currently challenging the full realization of their therapeutic utility include scalability and standardization of generation, molecular characterization for design and regulation, therapeutic potency assessment, and targeted delivery. The fields' utilization of advanced technologies (imaging, quantitative analyses, multi-omics, labeling/live-cell reporters), and utility of biocompatible natural sources for producing EVs (plants, bacteria, milk) will play an important role in overcoming these limitations. Advancements in EV engineering methodologies and design will facilitate the development of EV-based therapeutics, revolutionizing the current pharmaceutical landscape.
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Affiliation(s)
- Bethany Claridge
- Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science (LIMS), La Trobe University, Melbourne, VIC, Australia
- Baker Heart and Diabetes Institute, Melbourne, VIC, Australia
| | - Jonathan Lozano
- Baker Heart and Diabetes Institute, Melbourne, VIC, Australia
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Melbourne, VIC, Australia
| | - Qi Hui Poh
- Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science (LIMS), La Trobe University, Melbourne, VIC, Australia
- Baker Heart and Diabetes Institute, Melbourne, VIC, Australia
| | - David W. Greening
- Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science (LIMS), La Trobe University, Melbourne, VIC, Australia
- Baker Heart and Diabetes Institute, Melbourne, VIC, Australia
- Central Clinical School, Monash University, Melbourne, VIC, Australia
- Baker Department of Cardiometabolic Health, University of Melbourne, Melbourne, VIC, Australia
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9
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The effect of extracellular vesicles on the regulation of mitochondria under hypoxia. Cell Death Dis 2021; 12:358. [PMID: 33824273 PMCID: PMC8024302 DOI: 10.1038/s41419-021-03640-9] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 03/12/2021] [Accepted: 03/15/2021] [Indexed: 02/07/2023]
Abstract
Mitochondria are indispensable organelles for maintaining cell energy metabolism, and also are necessary to retain cell biological function by transmitting information as signal organelles. Hypoxia, one of the important cellular stresses, can directly regulates mitochondrial metabolites and mitochondrial reactive oxygen species (mROS), which affects the nuclear gene expression through mitochondrial retrograde signal pathways, and also promotes the delivery of signal components into cytoplasm, causing cellular injury. In addition, mitochondria can also trigger adaptive mechanisms to maintain mitochondrial function in response to hypoxia. Extracellular vesicles (EVs), as a medium of information transmission between cells, can change the biological effects of receptor cells by the release of cargo, including nucleic acids, proteins, lipids, mitochondria, and their compositions. The secretion of EVs increases in cells under hypoxia, which indirectly changes the mitochondrial function through the uptake of contents by the receptor cells. In this review, we focus on the mitochondrial regulation indirectly through EVs under hypoxia, and the possible mechanisms that EVs cause the changes in mitochondrial function. Finally, we discuss the significance of this EV-mitochondria axis in hypoxic diseases.
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10
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Mechanisms of mitochondrial cell death. Biochem Soc Trans 2021; 49:663-674. [PMID: 33704419 DOI: 10.1042/bst20200522] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 01/26/2021] [Accepted: 01/28/2021] [Indexed: 12/23/2022]
Abstract
Mitochondria are double-membrane bound organelles that not only provide energy for intracellular metabolism, but also play a key role in the regulation of cell death. Mitochondrial outer membrane permeabilization (MOMP), allowing the release of intermembrane space proteins like cytochrome c, is considered a point of no return in apoptosis. MOMP is controlled by the proteins of the B-cell lymphoma 2 (BCL-2) family, including pro-and anti-apoptotic members, whose balance determines the decision between cell death and survival. Other factors such as membrane lipid environment, membrane dynamics, and inter-organelle communications are also known to influence this process. MOMP and apoptosis have been acknowledged as immunologically silent. Remarkably, a growing body of evidence indicates that MOMP can engage in various pro-inflammatory signaling functions. In this mini-review, we discuss about our current knowledge on the mechanisms of mitochondrial apoptosis, as well as the involvement of mitochondria in other kinds of programmed cell death pathways.
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11
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Gueguen N, Baris O, Lenaers G, Reynier P, Spinazzi M. Secondary coenzyme Q deficiency in neurological disorders. Free Radic Biol Med 2021; 165:203-218. [PMID: 33450382 DOI: 10.1016/j.freeradbiomed.2021.01.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/31/2020] [Accepted: 01/06/2021] [Indexed: 12/13/2022]
Abstract
Coenzyme Q (CoQ) is a ubiquitous lipid serving essential cellular functions. It is the only component of the mitochondrial respiratory chain that can be exogenously absorbed. Here, we provide an overview of current knowledge, controversies, and open questions about CoQ intracellular and tissue distribution, in particular in brain and skeletal muscle. We discuss human neurological diseases and mouse models associated with secondary CoQ deficiency in these tissues and highlight pharmacokinetic and anatomical challenges in exogenous CoQ biodistribution, recent improvements in CoQ formulations and imaging, as well as alternative therapeutical strategies to CoQ supplementation. The last section proposes possible mechanisms underlying secondary CoQ deficiency in human diseases with emphasis on neurological and neuromuscular disorders.
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Affiliation(s)
- Naig Gueguen
- Unité Mixte de Recherche (UMR) MITOVASC, Centre National de la Recherche Scientifique (CNRS) 6015, Institut National de la Santé et de la Recherche Médicale (INSERM) U1083, University of Angers, 49933, Angers, France; Department of Biochemistry and Molecular Biology, CHU Angers, 49933, Angers, France
| | - Olivier Baris
- Unité Mixte de Recherche (UMR) MITOVASC, Centre National de la Recherche Scientifique (CNRS) 6015, Institut National de la Santé et de la Recherche Médicale (INSERM) U1083, University of Angers, 49933, Angers, France
| | - Guy Lenaers
- Unité Mixte de Recherche (UMR) MITOVASC, Centre National de la Recherche Scientifique (CNRS) 6015, Institut National de la Santé et de la Recherche Médicale (INSERM) U1083, University of Angers, 49933, Angers, France
| | - Pascal Reynier
- Unité Mixte de Recherche (UMR) MITOVASC, Centre National de la Recherche Scientifique (CNRS) 6015, Institut National de la Santé et de la Recherche Médicale (INSERM) U1083, University of Angers, 49933, Angers, France; Department of Biochemistry and Molecular Biology, CHU Angers, 49933, Angers, France
| | - Marco Spinazzi
- Unité Mixte de Recherche (UMR) MITOVASC, Centre National de la Recherche Scientifique (CNRS) 6015, Institut National de la Santé et de la Recherche Médicale (INSERM) U1083, University of Angers, 49933, Angers, France; Neuromuscular Reference Center, Department of Neurology, CHU Angers, 49933, Angers, France.
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12
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Chen M, Horn HT, Wen T, Cryns VL, Anderson RA. Assessing In Situ Phosphoinositide-Protein Interactions Through Fluorescence Proximity Ligation Assay in Cultured Cells. Methods Mol Biol 2021; 2251:133-142. [PMID: 33481236 PMCID: PMC9789737 DOI: 10.1007/978-1-0716-1142-5_9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Proximity ligation assay (PLA) is a well-established method for detecting in situ interactions between two epitopes with high resolution and specificity. Notably, PLA is not only a robust method for studying protein-protein interaction but also an efficient approach to characterize and validate protein posttranslational modifications (PTM) using one antibody against the core protein and one against the PTM residue. Therefore, it could be applied as a powerful approach to detect specific interactions of endogenous phosphoinositides and their binding proteins within cells. Importantly, we have specifically detected the PLA signal between PtdIns(4,5)P2 and its binding effector p53 in the nucleus. This cutting-edge method fully complements other conventional approaches for studying phosphoinositide-protein interactions and provides important localization signals and robust quantitation of the detected interactions. Here, we present the PLA fluorescence protocol for detecting in situ phosphoinositide-protein interactions in cultured cells and is semiquantitative for interactions that are regulated by cellular signaling.
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Affiliation(s)
- Mo Chen
- University of Wisconsin-Madison, School of Medicine and Public Health, Madison, WI, USA
| | - Hudson T Horn
- University of Wisconsin-Madison, School of Medicine and Public Health, Madison, WI, USA
| | - Tianmu Wen
- University of Wisconsin-Madison, School of Medicine and Public Health, Madison, WI, USA
| | - Vincent L Cryns
- Department of Medicine, University of Wisconsin Carbone Cancer Center, University of Wisconsin-Madison, School of Medicine and Public Health, Madison, WI, USA
| | - Richard A Anderson
- University of Wisconsin-Madison, School of Medicine and Public Health, Madison, WI, USA.
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13
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Farshbaf M, Khosroushahi AY, Mojarad-Jabali S, Zarebkohan A, Valizadeh H, Walker PR. Cell surface GRP78: An emerging imaging marker and therapeutic target for cancer. J Control Release 2020; 328:932-941. [DOI: 10.1016/j.jconrel.2020.10.055] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 10/23/2020] [Accepted: 10/25/2020] [Indexed: 12/12/2022]
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14
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Sodium Hydrogen Exchanger Regulatory Factor-1 (NHERF1) Regulates Fetal Membrane Inflammation. Int J Mol Sci 2020; 21:ijms21207747. [PMID: 33092043 PMCID: PMC7589612 DOI: 10.3390/ijms21207747] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 10/13/2020] [Accepted: 10/16/2020] [Indexed: 11/20/2022] Open
Abstract
The fetal inflammatory response, a key contributor of infection-associated preterm birth (PTB), is mediated by nuclear factor kappa B (NF-kB) activation. Na+/H+ exchanger regulatory factor-1 (NHERF1) is an adapter protein that can regulate intracellular signal transduction and thus influence NF-kB activation. Accordingly, NHERF1 has been reported to enhance proinflammatory cytokine release and amplify inflammation in a NF-kB-dependent fashion in different cell types. The objective of this study was to examine the role of NHERF1 in regulating fetal membrane inflammation during PTB. We evaluated the levels of NHERF1 in human fetal membranes from term labor (TL), term not in labor (TNIL), and PTB and in a CD1 mouse model of PTB induced by lipopolysaccharide (LPS). Additionally, primary cultures of fetal membrane cells were treated with LPS, and NHERF1 expression and cytokine production were evaluated. Gene silencing methods using small interfering RNA targeting NHERF1 were used to determine the functional relevance of NHERF1 in primary cultures. NHERF1 expression was significantly (p < 0.001) higher in TL and PTB membranes compared to TNIL membranes, and this coincided with enhanced (p < 0.01) interleukin (IL)-6 and IL-8 expression levels. LPS-treated animals delivering PTB had increased levels of NHERF1, IL-6, and IL-8 compared to phosphate-buffered saline (PBS; control) animals. Silencing of NHERF1 expression resulted in a significant reduction in NF-kB activation and IL-6 and IL-8 production as well as increased IL-10 production. In conclusion, downregulation of NHERF1 increased anti-inflammatory IL-10, and reducing NHERF1 expression could be a potential therapeutic strategy to reduce the risk of infection/inflammation associated with PTB.
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15
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Wei H, Cao C, Wei X, Meng M, Wu B, Meng L, Wei X, Gu S, Li H. Circular RNA circVEGFC accelerates high glucose-induced vascular endothelial cells apoptosis through miR-338-3p/HIF-1α/VEGFA axis. Aging (Albany NY) 2020; 12:14365-14375. [PMID: 32680978 PMCID: PMC7425483 DOI: 10.18632/aging.103478] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Accepted: 05/27/2020] [Indexed: 04/07/2023]
Abstract
More and more findings illustrate the critical roles of circular RNA (circRNA) in diabetes mellitus (DM) and its complications. A major pathological characteristic for DM is the apoptosis of endothelial cells (ECs) induced by high glucose (HG), however, the function of circRNA in the ECs' phenotypes is still elusive. Here, this study identified an up-regulated circRNA (circVEGFC) in the HG-induced human umbilical vein endothelial cells (HUVECs). Functionally, knockdown of circVEGFC alleviated the apoptosis and recovered the proliferation in HUVECs induced by HG administration. Mechanistically, circVEGFC functioned as the sponge of miR-338-3p, and miR-338-3p was found to target the 3'-Untranslated Regions (3'-UTR) of hypoxia inducible factor 1 alpha (HIF-1α). HIF-1α, a critical transcription factor in DM, could activate the transcription of vascular endothelial growth factor A (VEGFA) and promote its protein product. In conclusion, these findings reveal the promotion of circVEGFC/miR-338-3p/HIF-1α/VEGFA axis in the HG-induced ECs' apoptosis, providing a potential treatment strategy for ECs' damage in DM.
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Affiliation(s)
- Hua Wei
- Department of Endocrinology, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise 533022, Guangxi, China
| | - Cong Cao
- Department of Endocrinology, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise 533022, Guangxi, China
| | - Xiaojuan Wei
- Urology Care Unit, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise 533022, Guangxi, China
| | - Minglv Meng
- Medical Statistics Office, Youjiang Medical University for Nationalites, Baise 533022, Guangxi, China
| | - Biaoliang Wu
- Department of Endocrinology, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise 533022, Guangxi, China
| | - Lianxin Meng
- Department of Endocrinology, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise 533022, Guangxi, China
| | - Xi Wei
- Department of Endocrinology, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise 533022, Guangxi, China
| | - Shixing Gu
- Department of Endocrinology, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise 533022, Guangxi, China
| | - Hongmian Li
- Department of Plastic and Aesthetic Surgery, The Fifth Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi, China
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16
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Wang TS, Coppens I, Saorin A, Brady NR, Hamacher-Brady A. Endolysosomal Targeting of Mitochondria Is Integral to BAX-Mediated Mitochondrial Permeabilization during Apoptosis Signaling. Dev Cell 2020; 53:627-645.e7. [PMID: 32504557 DOI: 10.1016/j.devcel.2020.05.014] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2018] [Revised: 01/03/2020] [Accepted: 05/13/2020] [Indexed: 12/29/2022]
Abstract
Mitochondrial outer membrane permeabilization (MOMP) is a core event in apoptosis signaling. However, the underlying mechanism of BAX and BAK pore formation remains incompletely understood. We demonstrate that mitochondria are globally and dynamically targeted by endolysosomes (ELs) during MOMP. In response to pro-apoptotic BH3-only protein signaling and pharmacological MOMP induction, ELs increasingly form transient contacts with mitochondria. Subsequently, ELs rapidly accumulate within the entire mitochondrial compartment. This switch-like accumulation period temporally coincides with mitochondrial BAX clustering and cytochrome c release. Remarkably, interactions of ELs with mitochondria control BAX recruitment and pore formation. Knockdown of Rab5A, Rab5C, or USP15 interferes with EL targeting of mitochondria and functionally uncouples BAX clustering from cytochrome c release, while knockdown of the Rab5 exchange factor Rabex-5 impairs both BAX clustering and cytochrome c release. Together, these data reveal that EL-mitochondrial inter-organelle communication is an integral regulatory component of functional MOMP execution during cellular apoptosis signaling.
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Affiliation(s)
- Tim Sen Wang
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD 21205, USA; Department of Cell Biology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Isabelle Coppens
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD 21205, USA
| | - Anna Saorin
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD 21205, USA
| | - Nathan Ryan Brady
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD 21205, USA.
| | - Anne Hamacher-Brady
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD 21205, USA; Department of Biochemistry and Molecular Biology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD 21205, USA.
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17
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Bae H, Lee JY, Song G, Lim W. Fucosterol Suppresses the Progression of Human Ovarian Cancer by Inducing Mitochondrial Dysfunction and Endoplasmic Reticulum Stress. Mar Drugs 2020; 18:E261. [PMID: 32429354 PMCID: PMC7281529 DOI: 10.3390/md18050261] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 05/05/2020] [Accepted: 05/09/2020] [Indexed: 12/30/2022] Open
Abstract
Ovarian cancer is difficult to diagnose early and has high rates of relapse and mortality. Therefore, the treatment of ovarian cancer needs to be improved. Recently, several studies have been conducted in an attempt to develop anticancer drugs from naturally derived ingredients. Compared to traditional chemotherapy, natural compounds can overcome drug resistance with lower side effects. Fucosterol, a phytosterol present in brown algae, reportedly possesses many bioactive effects, including anticancer properties. However, the anticancer effects of fucosterol in ovarian cancer remain unexplored. Therefore, we investigated the effects of fucosterol on progression in human ovarian cancer cells. Fucosterol inhibited cell proliferation and cell-cycle progression in ovarian cancer cells. Additionally, fucosterol regulated the proliferation-related signaling pathways, the production of reactive oxygen species, mitochondrial function, endoplasmic reticulum stress, angiogenesis, and calcium homeostasis. Moreover, it decreased tumor formation in a zebrafish xenograft model. These results indicate that fucosterol could be used as a potential therapeutic agent in ovarian cancer.
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Affiliation(s)
- Hyocheol Bae
- Institute of Animal Molecular Biotechnology, Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Korea;
| | - Jin-Young Lee
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, Wisconsin, WI 53226, USA;
| | - Gwonhwa Song
- Institute of Animal Molecular Biotechnology, Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Korea;
| | - Whasun Lim
- Department of Food and Nutrition, College of Science and Technology, Kookmin University, Seoul 02707, Korea
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18
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Hartmann C, Schwietzer YA, Kummer D, Kirschnick N, Hoppe E, Thüring EM, Glaesner-Ebnet M, Brinkmann F, Gerke V, Reuter S, Nakayama M, Ebnet K. The mitochondrial outer membrane protein SYNJ2BP interacts with the cell adhesion molecule TMIGD1 and can recruit it to mitochondria. BMC Mol Cell Biol 2020; 21:30. [PMID: 32303178 PMCID: PMC7164261 DOI: 10.1186/s12860-020-00274-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 04/06/2020] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Transmembrane and immunoglobulin domain-containing protein 1 (TMIGD1) is a recently identified cell adhesion molecule which is predominantly expressed by epithelial cells of the intestine and the kidney. Its expression is downregulated in both colon and renal cancer suggesting a tumor suppressive activity. The function of TMIGD1 at the cellular level is largely unclear. Published work suggests a protective role of TMIGD1 during oxidative stress in kidney epithelial cells, but the underlying molecular mechanisms are unknown. RESULTS In this study, we address the subcellular localization of TMIGD1 in renal epithelial cells and identify a cytoplasmic scaffold protein as interaction partner of TMIGD1. We find that TMIGD1 localizes to different compartments in renal epithelial cells and that this localization is regulated by cell confluency. Whereas it localizes to mitochondria in subconfluent cells it is localized at cell-cell contacts in confluent cells. We find that cell-cell contact localization is regulated by N-glycosylation and that both the extracellular and the cytoplasmic domain contribute to this localization. We identify Synaptojanin 2-binding protein (SYNJ2BP), a PDZ domain-containing cytoplasmic protein, which localizes to both mitochondria and the plasma membrane, as interaction partner of TMIGD1. The interaction of TMIGD1 and SYNJ2BP is mediated by the PDZ domain of SYNJ2BP and the C-terminal PDZ domain-binding motif of TMIGD1. We also find that SYNJ2BP can actively recruit TMIGD1 to mitochondria providing a potential mechanism for the localization of TMIGD1 at mitochondria. CONCLUSIONS This study describes TMIGD1 as an adhesion receptor that can localize to both mitochondria and cell-cell junctions in renal epithelial cells. It identifies SYNJ2BP as an interaction partner of TMIGD1 providing a potential mechanism underlying the localization of TMIGD1 at mitochondria. The study thus lays the basis for a better understanding of the molecular function of TMIGD1 during oxidative stress regulation.
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Affiliation(s)
- Christian Hartmann
- Institute-Associated Research Group "Cell adhesion and cell polarity", University of Münster, Von-Esmarch-Str. 56, 48149, Münster, Germany.,Institute of Medical Biochemistry, ZMBE, University of Münster, Von-Esmarch-Str. 56, 48149, Münster, Germany
| | - Ysabel Alessa Schwietzer
- Institute-Associated Research Group "Cell adhesion and cell polarity", University of Münster, Von-Esmarch-Str. 56, 48149, Münster, Germany.,Institute of Medical Biochemistry, ZMBE, University of Münster, Von-Esmarch-Str. 56, 48149, Münster, Germany
| | - Daniel Kummer
- Institute-Associated Research Group "Cell adhesion and cell polarity", University of Münster, Von-Esmarch-Str. 56, 48149, Münster, Germany.,Institute of Medical Biochemistry, ZMBE, University of Münster, Von-Esmarch-Str. 56, 48149, Münster, Germany.,Interdisciplinary Clinical Research Center (IZKF), University of Münster, Von-Esmarch-Str. 56, 48149, Münster, Germany
| | - Nils Kirschnick
- Institute-Associated Research Group "Cell adhesion and cell polarity", University of Münster, Von-Esmarch-Str. 56, 48149, Münster, Germany.,Institute of Medical Biochemistry, ZMBE, University of Münster, Von-Esmarch-Str. 56, 48149, Münster, Germany
| | - Esther Hoppe
- Institute-Associated Research Group "Cell adhesion and cell polarity", University of Münster, Von-Esmarch-Str. 56, 48149, Münster, Germany.,Institute of Medical Biochemistry, ZMBE, University of Münster, Von-Esmarch-Str. 56, 48149, Münster, Germany
| | - Eva-Maria Thüring
- Institute-Associated Research Group "Cell adhesion and cell polarity", University of Münster, Von-Esmarch-Str. 56, 48149, Münster, Germany.,Institute of Medical Biochemistry, ZMBE, University of Münster, Von-Esmarch-Str. 56, 48149, Münster, Germany
| | - Mark Glaesner-Ebnet
- Institute-Associated Research Group "Cell adhesion and cell polarity", University of Münster, Von-Esmarch-Str. 56, 48149, Münster, Germany.,Institute of Medical Biochemistry, ZMBE, University of Münster, Von-Esmarch-Str. 56, 48149, Münster, Germany
| | - Frauke Brinkmann
- Institute-Associated Research Group "Cell adhesion and cell polarity", University of Münster, Von-Esmarch-Str. 56, 48149, Münster, Germany.,Institute of Medical Biochemistry, ZMBE, University of Münster, Von-Esmarch-Str. 56, 48149, Münster, Germany
| | - Volker Gerke
- Institute of Medical Biochemistry, ZMBE, University of Münster, Von-Esmarch-Str. 56, 48149, Münster, Germany
| | - Stefan Reuter
- Department of Medicine D, Division of General Internal Medicine, Nephrology and Rheumatology, University Hospital of Münster, 48149, Münster, Germany
| | - Masanori Nakayama
- Laboratory for Cell Polarity and Organogenesis, Max-Planck-Institute for Heart and Lung Research, 61231, Bad Nauheim, Germany
| | - Klaus Ebnet
- Institute-Associated Research Group "Cell adhesion and cell polarity", University of Münster, Von-Esmarch-Str. 56, 48149, Münster, Germany. .,Institute of Medical Biochemistry, ZMBE, University of Münster, Von-Esmarch-Str. 56, 48149, Münster, Germany. .,Interdisciplinary Clinical Research Center (IZKF), University of Münster, Von-Esmarch-Str. 56, 48149, Münster, Germany. .,Cells-in-Motion Cluster of Excellence (EXC 1003 - CiM), University of Münster, 48419, Münster, Germany.
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19
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Chen M, Wen T, Horn HT, Chandrahas VK, Thapa N, Choi S, Cryns VL, Anderson RA. The nuclear phosphoinositide response to stress. Cell Cycle 2020; 19:268-289. [PMID: 31902273 PMCID: PMC7028212 DOI: 10.1080/15384101.2019.1711316] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Accumulating evidence reveals that nuclear phosphoinositides (PIs) serve as central signaling hubs that control a multitude of nuclear processes by regulating the activity of nuclear proteins. In response to cellular stressors, PIs accumulate in the nucleus and multiple PI isomers are synthesized by the actions of PI-metabolizing enzymes, kinases, phosphatases and phospholipases. By directly interacting with effector proteins, phosphoinositide signals transduce changes in cellular functions. Here we describe nuclear phosphoinositide signaling in multiple sub-nuclear compartments and summarize the literature that demonstrates roles for specific kinases, phosphatases, and phospholipases in the orchestration of nuclear phosphoinositide signaling in response to cellular stress. Additionally, we discuss the specific PI-protein complexes through which these lipids execute their functions by regulating the configuration, stability, and transcription activity of their effector proteins. Overall, our review provides a detailed landscape of the current understanding of the nuclear PI-protein interactome and its role in shaping the coordinated response to cellular stress.
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Affiliation(s)
- Mo Chen
- School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA
| | - Tianmu Wen
- School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA
| | - Hudson T. Horn
- School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA
| | | | - Narendra Thapa
- School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA
| | - Suyong Choi
- School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA
| | - Vincent L. Cryns
- Department of Medicine, University of Wisconsin Carbone Cancer Center, University of Wisconsin-Madison, School of Medicine and Public Health, Madison, WI, USA
| | - Richard A. Anderson
- School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA
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Cell Surface GRP78 as a Death Receptor and an Anticancer Drug Target. Cancers (Basel) 2019; 11:cancers11111787. [PMID: 31766302 PMCID: PMC6896222 DOI: 10.3390/cancers11111787] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 10/31/2019] [Accepted: 11/08/2019] [Indexed: 12/16/2022] Open
Abstract
Cell surface GRP78 (csGRP78, glucose-regulated protein 78 kDa) is preferentially overexpressed in aggressive, metastatic, and chemo-resistant cancers. GRP78 is best studied as a chaperone protein in the lumen of endoplasmic reticulum (ER), facilitating folding and secretion of the newly synthesized proteins and regulating protein degradation as an ER stress sensor in the unfolded protein pathway. As a cell surface signal receptor, multiple csGRP78 ligands have been discovered to date, and they trigger various downstream cell signaling pathways including pro-proliferative, pro-survival, and pro-apoptotic pathways. In this perspective, we evaluate csGRP78 as a cell surface death receptor and its prospect as an anticancer drug target. The pro-apoptotic ligands of csGRP78 discovered so far include natural proteins, monoclonal antibodies, and synthetic peptides. Even the secreted GRP78 itself was recently found to function as a pro-apoptotic ligand for csGRP78, mediating pancreatic β-cell death. As csGRP78 is found to mainly configur as an external peripheral protein on cancer cell surface, how it can transmit death signals to the cytoplasmic environment remains enigmatic. With the recent encouraging results from the natural csGRP78 targeting pro-apoptotic monoclonal antibody PAT-SM6 in early-stage cancer clinical trials, the potential to develop a novel class of anticancer therapeutics targeting csGRP78 is becoming more compelling.
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Chen M, Choi S, Jung O, Wen T, Baum C, Thapa N, Lambert PF, Rapraeger AC, Anderson RA. The Specificity of EGF-Stimulated IQGAP1 Scaffold Towards the PI3K-Akt Pathway is Defined by the IQ3 motif. Sci Rep 2019; 9:9126. [PMID: 31235839 PMCID: PMC6591252 DOI: 10.1038/s41598-019-45671-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 05/22/2019] [Indexed: 12/13/2022] Open
Abstract
Epidermal growth factor receptor (EGFR) and its downstream phosphoinositide 3-kinase (PI3K) pathway are commonly deregulated in cancer. Recently, we have shown that the IQ motif-containing GTPase-activating protein 1 (IQGAP1) provides a molecular platform to scaffold all the components of the PI3K-Akt pathway and results in the sequential generation of phosphatidylinositol-3,4,5-trisphosphate (PI3,4,5P3). In addition to the PI3K-Akt pathway, IQGAP1 also scaffolds the Ras-ERK pathway. To define the specificity of IQGAP1 for the control of PI3K signaling, we have focused on the IQ3 motif in IQGAP1 as PIPKIα and PI3K enzymes bind this region. An IQ3 deletion mutant loses interactions with the PI3K-Akt components but retains binding to ERK and EGFR. Consistently, blocking the IQ3 motif of IQGAP1 using an IQ3 motif-derived peptide mirrors the effect of IQ3 deletion mutant by reducing Akt activation but has no impact on ERK activation. Also, the peptide disrupts the binding of IQGAP1 with PI3K-Akt pathway components, while IQGAP1 interactions with ERK and EGFR are not affected. Functionally, deleting or blocking the IQ3 motif inhibits cell proliferation, invasion, and migration in a non-additive manner to a PIPKIα inhibitor, establishing the functional specificity of IQ3 motif towards the PI3K-Akt pathway. Taken together, the IQ3 motif is a specific target for suppressing activation of the PI3K-Akt but not the Ras-ERK pathway. Although EGFR stimulates the IQGAP1-PI3K and -ERK pathways, here we show that IQGAP1-PI3K controls migration, invasion, and proliferation independent of ERK. These data illustrate that the IQ3 region of IQGAP1 is a promising therapeutic target for PI3K-driven cancer.
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Affiliation(s)
- Mo Chen
- University of Wisconsin-Madison, School of Medicine and Public Health, Madison, WI, USA
| | - Suyong Choi
- University of Wisconsin-Madison, School of Medicine and Public Health, Madison, WI, USA
| | - Oisun Jung
- University of Wisconsin-Madison, School of Medicine and Public Health, Madison, WI, USA
| | - Tianmu Wen
- University of Wisconsin-Madison, School of Medicine and Public Health, Madison, WI, USA
| | - Christina Baum
- University of Wisconsin-Madison, School of Medicine and Public Health, Madison, WI, USA
| | - Narendra Thapa
- University of Wisconsin-Madison, School of Medicine and Public Health, Madison, WI, USA
| | - Paul F Lambert
- University of Wisconsin-Madison, School of Medicine and Public Health, Madison, WI, USA
| | - Alan C Rapraeger
- University of Wisconsin-Madison, School of Medicine and Public Health, Madison, WI, USA
| | - Richard A Anderson
- University of Wisconsin-Madison, School of Medicine and Public Health, Madison, WI, USA.
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