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Li Y, Gao X, Li Y, Yan S, Zhang Y, Zheng X, Gu Q. Endocytosis: the match point of nanoparticle-based cancer therapy. J Mater Chem B 2024. [PMID: 39192831 DOI: 10.1039/d4tb01227e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/29/2024]
Abstract
Nanomedicine has inspired a ground-breaking strategy for cancer therapy. By intelligently assembling diverse moieties to form nanoparticles, numerous functionalities such as controlled release, synergistic efficiency, and in situ killing can be achieved. The emerging nanoparticles have been designed with elevated targeting efficiency as targeting cancer cells is the primary requirement for nanoparticles. However, effective targeting does not guarantee therapeutic effects as endocytosis is a prerequisite for nanoparticles to exert effects. The recent decade has witnessed the rapid development of endocytosis-oriented nanoparticles, and this review subtly analyzes, categorizes, and exemplifies these nanoparticles according to their biological internalization patterns, and the correlation between the endocytosis mechanism and the property of nanoparticles is bridged. Based on the interdisciplinary vision, the present challenges and future perspectives of nanoparticle design for successful endocytosis are discussed, highlighting the potential strategies for the future development of endocytosis-oriented nanoparticles, thus facilitating the endocytosis-oriented strategy from bench to bedside. The undeniable fact is that endocytosis-oriented nanoparticles will definitely bring new blood to the next generation of advanced cancer therapies.
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Affiliation(s)
- Yonglu Li
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, Zhejiang, People's Republic of China.
| | - Xin Gao
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, Zhejiang, People's Republic of China.
| | - Yapeng Li
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, Zhejiang, People's Republic of China.
| | - Shihai Yan
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, Zhejiang, People's Republic of China.
| | - Yiru Zhang
- Department of Food Science and Nutrition, Zhejiang Key Laboratory for Agro-food Processing, Fuli Institute of Food Science, National Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang University, Hangzhou 310058, People's Republic of China
| | - Xiaodong Zheng
- Department of Food Science and Nutrition, Zhejiang Key Laboratory for Agro-food Processing, Fuli Institute of Food Science, National Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang University, Hangzhou 310058, People's Republic of China
| | - Qing Gu
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, Zhejiang, People's Republic of China.
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2
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Oh S, Lee J, Choi HJ, Kim S, Sapuru V, Kim M, Hite RK. Discovery of Selective Inhibitors for the Lysosomal Parkinson's Disease Channel TMEM175. J Am Chem Soc 2024; 146:23230-23239. [PMID: 39116214 DOI: 10.1021/jacs.4c05623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/10/2024]
Abstract
TMEM175 is a lysosomal potassium and proton channel that is associated with the development of Parkinson's disease. Advances in understanding the physiological roles of TMEM175 have been hampered by the absence of selective inhibitors, and studies involving genetic perturbations have yielded conflicting results. Here, we report the discovery and characterization of the first reported TMEM175-selective inhibitors, 2-phenylpyridin-4-ylamine (2-PPA), and AP-6. Cryo-EM structures of human TMEM175 bound by 2-PPA and AP-6 reveal that they act as pore blockers, binding at distinct sites in the pore and occluding the ion permeation pathway. Acute inhibition of TMEM175 by 2-PPA or AP-6 increases the level of lysosomal macromolecule catabolism, thereby accelerating macropinocytosis and other digestive processes. These inhibitors may serve as valuable tools to study the roles of TMEM175 in regulating lysosomal function and provide useful templates for future therapeutic development in Parkinson's disease.
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Affiliation(s)
- SeCheol Oh
- Structural Biology Program, Memorial Sloan Kettering Cancer Center, New York, New York 10065, United States
| | - Jooyeon Lee
- Department of Chemistry, Chungbuk National University, Cheongju 28644, Republic of Korea
| | - Ho Jeong Choi
- Department of Chemistry, Chungbuk National University, Cheongju 28644, Republic of Korea
| | - Songwon Kim
- Structural Biology Program, Memorial Sloan Kettering Cancer Center, New York, New York 10065, United States
| | - Vinay Sapuru
- Structural Biology Program, Memorial Sloan Kettering Cancer Center, New York, New York 10065, United States
- Physiology, Biophysics, and Systems Biology (PBSB) Program, Weill Cornell Graduate School of Biomedical Sciences, 1300 York Avenue, New York, New York 10065, United States
| | - Min Kim
- Department of Chemistry, Chungbuk National University, Cheongju 28644, Republic of Korea
| | - Richard K Hite
- Structural Biology Program, Memorial Sloan Kettering Cancer Center, New York, New York 10065, United States
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3
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Yoshie S, Kuriyama M, Maekawa M, Xu W, Niidome T, Futaki S, Hirose H. ATP2B4 is an essential gene for epidermal growth factor-induced macropinocytosis in A431 cells. Genes Cells 2024; 29:512-520. [PMID: 38597132 DOI: 10.1111/gtc.13118] [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: 02/14/2024] [Revised: 03/27/2024] [Accepted: 03/29/2024] [Indexed: 04/11/2024]
Abstract
Macropinocytosis (MPC) is a large-scale endocytosis pathway that involves actin-dependent membrane ruffle formation and subsequent ruffle closure to generate macropinosomes for the uptake of fluid-phase cargos. MPC is categorized into two types: constitutive and stimuli-induced. Constitutive MPC in macrophages relies on extracellular Ca2+ sensing by a calcium-sensing receptor. However, the link between stimuli-induced MPC and Ca2+ remains unclear. Here, we find that both intracellular and extracellular Ca2+ are required for epidermal growth factor (EGF)-induced MPC in A431 human epidermoid carcinoma cells. Through investigation of mammalian homologs of coelomocyte uptake defective (CUP) genes, we identify ATP2B4, encoding for a Ca2+ pump called the plasma membrane calcium ATPase 4 (PMCA4), as a Ca2+-related regulator of EGF-induced MPC. Knockout (KO) of ATP2B4, as well as depletion of extracellular/intracellular Ca2+, inhibited ruffle closure and macropinosome formation, without affecting ruffle formation. We demonstrate the importance of PMCA4 activity itself, independent of interactions with other proteins via its C-terminus known as a PDZ domain-binding motif. Additionally, we show that ATP2B4-KO reduces EGF-stimulated Ca2+ oscillation during MPC. Our findings suggest that EGF-induced MPC requires ATP2B4-dependent Ca2+ dynamics.
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Affiliation(s)
- Shunsuke Yoshie
- Institute for Chemical Research, Kyoto University, Uji, Japan
| | | | - Masashi Maekawa
- Division of Physiological Chemistry and Metabolism, Graduate School of Pharmaceutical Sciences, Keio University, Tokyo, Japan
| | - Wei Xu
- Faculty of Advanced Science and Technology, Kumamoto University, Kumamoto, Japan
| | - Takuro Niidome
- Faculty of Advanced Science and Technology, Kumamoto University, Kumamoto, Japan
| | - Shiroh Futaki
- Institute for Chemical Research, Kyoto University, Uji, Japan
| | - Hisaaki Hirose
- Institute for Chemical Research, Kyoto University, Uji, Japan
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4
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Liu Y, Yang D, Jiang W, Chi T, Kang J, Wang Z, Wu F. Cell entry of bovine respiratory syncytial virus through clathrin-mediated endocytosis is regulated by PI3K-Akt and Src-JNK pathways. Front Microbiol 2024; 15:1393127. [PMID: 38690369 PMCID: PMC11059085 DOI: 10.3389/fmicb.2024.1393127] [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: 02/28/2024] [Accepted: 04/05/2024] [Indexed: 05/02/2024] Open
Abstract
Bovine respiratory syncytial virus (BRSV) is an RNA virus with envelope that causes acute, febrile, and highly infectious respiratory diseases in cattle. However, the manner and mechanism of BRSV entry into cells remain unclear. In this study, we aimed to explore the entry manner of BRSV into MDBK cells and its regulatory mechanism. Our findings, based on virus titer, virus copies, western blot and IFA analysis, indicate that BRSV enters MDBK cells through endocytosis, relying on dynamin, specifically via clathrin-mediated endocytosis rather than caveolin-mediated endocytosis and micropinocytosis. We observed that the entered BRSV initially localizes in early endosomes and subsequently localizes in late endosomes. Additionally, our results of western blot, virus titer and virus copies demonstrate that BRSV entry through clathrin-mediated endocytosis is regulated by PI3K-Akt and Src-JNK signaling pathways. Overall, our study suggests that BRSV enters MDBK cells through clathrin-mediated endocytosis, entered BRSV is trafficked to late endosome via early endosome, BRSV entry through clathrin-mediated endocytosis is regulated by PI3K-Akt and Src-JNK signaling pathways.
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Affiliation(s)
- Yang Liu
- Key Laboratory of Animal Biosafety Risk Prevention and Control of Ministry of Agriculture and Rural Affairs (South), China Animal Health and Epidemiology Center, Qingdao, Shandong, China
| | - Dongliang Yang
- Key Laboratory of Biotechnology and Bioengineering of State Ethnic Affairs Commission, Biomedical Research Center, Northwest Minzu University, Lanzhou, Gansu, China
| | - Wen Jiang
- Key Laboratory of Animal Biosafety Risk Prevention and Control of Ministry of Agriculture and Rural Affairs (South), China Animal Health and Epidemiology Center, Qingdao, Shandong, China
| | - Tianying Chi
- Key Laboratory of Animal Biosafety Risk Prevention and Control of Ministry of Agriculture and Rural Affairs (South), China Animal Health and Epidemiology Center, Qingdao, Shandong, China
| | - Jingli Kang
- Key Laboratory of Animal Biosafety Risk Prevention and Control of Ministry of Agriculture and Rural Affairs (South), China Animal Health and Epidemiology Center, Qingdao, Shandong, China
| | - Zhiliang Wang
- Key Laboratory of Animal Biosafety Risk Prevention and Control of Ministry of Agriculture and Rural Affairs (South), China Animal Health and Epidemiology Center, Qingdao, Shandong, China
| | - Faxing Wu
- Key Laboratory of Animal Biosafety Risk Prevention and Control of Ministry of Agriculture and Rural Affairs (South), China Animal Health and Epidemiology Center, Qingdao, Shandong, China
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5
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Lteif M, Pallardy M, Turbica I. Antibodies internalization mechanisms by dendritic cells and their role in therapeutic antibody immunogenicity. Eur J Immunol 2024; 54:e2250340. [PMID: 37985174 DOI: 10.1002/eji.202250340] [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: 05/18/2023] [Revised: 11/14/2023] [Accepted: 11/17/2023] [Indexed: 11/22/2023]
Abstract
Internalization and processing by antigen-presenting cells such as dendritic cells (DCs) are critical steps for initiating a T-cell response to therapeutic antibodies. Consequences are the production of neutralizing antidrug antibodies altering the clinical response, the presence of immune complexes, and, in some rare cases, hypersensitivity reactions. In recent years, significant progress has been made in the knowledge of cellular uptake mechanisms of antibodies in DCs. The uptake of antibodies could be directly related to their immunogenicity by regulating the quantity of materials entering the DCs in relation to antibody structure. Here, we summarize the latest insights into cellular uptake mechanisms and pathways in DCs. We highlight the approaches to study endocytosis, the impact of endocytosis routes on T-cell response, and discuss the link between how DCs internalize therapeutic antibodies and the potential mechanisms that could give rise to immunogenicity. Understanding these processes could help in developing assays to evaluate the immunogenicity potential of biotherapeutics.
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Affiliation(s)
- Maria Lteif
- Université Paris-Saclay, Inserm, Inflammation, Microbiome and Immunosurveillance, Orsay, France
| | - Marc Pallardy
- Université Paris-Saclay, Inserm, Inflammation, Microbiome and Immunosurveillance, Orsay, France
| | - Isabelle Turbica
- Université Paris-Saclay, Inserm, Inflammation, Microbiome and Immunosurveillance, Orsay, France
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6
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Sun X, Li Y, He Y, Cheng L, Wei J, Du L, Shen Z, Yoshida S. GTPase-activating protein ARAP1 regulates circular dorsal ruffles as a nutrient uptake mechanism in the Hep3B hepatocellular carcinoma cell line. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.12.31.573800. [PMID: 38260345 PMCID: PMC10802275 DOI: 10.1101/2023.12.31.573800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
Circular dorsal ruffles (CDRs), large-scale rounded membrane ruffles, function as precursors of macropinocytosis. We recently reported that CDRs are exposed in the Hep3B hepatocellular carcinoma cell line, while not in other hepatocellular carcinoma cell lines, indicating that the CDRs in Hep3B are associated with malignant potential. In this study, we investigated the cellular function of CDRs in Hep3B cells by focusing on the molecular mechanisms of the GTPase-activating protein ARAP1. ARAP1 was localized to the CDRs, the sizes of which were reduced by deletion of this protein. High-resolution scanning electron micrographs revealed that CDRs comprise small vertical lamellipodia, the expression pattern of which was disrupted in ARAP1 KO cells. Extracellular solute uptake, rate of cell growth, and malignant potential were attenuated in the KO cells. ARAP1 is also localized in Hep3B cell mitochondria, although not in those of the Huh7 hepatocellular carcinoma cell line. On the basis of these findings, we propose that the aberrant expression of ARAP1 in Hep3B cells modulates CDRs, thereby resulting in an excess uptake of nutrients as an initial event in cancer development. SUMMARY STATEMENT ARAP1 regulates circular dorsal ruffles (CDRs) in the Hep3B HCC cell line and deletion of this protein attenuates malignant potential, thereby indicating the involvement of CDRs in cancer development.
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Bhosle VK, Tan JM, Li T, Hua R, Kwon H, Li Z, Patel S, Tessier-Lavigne M, Robinson LA, Kim PK, Brumell JH. SLIT2/ROBO1 signaling suppresses mTORC1 for organelle control and bacterial killing. Life Sci Alliance 2023; 6:e202301964. [PMID: 37311584 PMCID: PMC10264968 DOI: 10.26508/lsa.202301964] [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] [Received: 02/01/2023] [Revised: 05/31/2023] [Accepted: 05/31/2023] [Indexed: 06/15/2023] Open
Abstract
SLIT/ROBO signaling impacts many aspects of tissue development and homeostasis, in part, through the regulation of cell growth and proliferation. Recent studies have also linked SLIT/ROBO signaling to the regulation of diverse phagocyte functions. However, the mechanisms by which SLIT/ROBO signaling acts at the nexus of cellular growth control and innate immunity remain enigmatic. Here, we show that SLIT2-mediated activation of ROBO1 leads to inhibition of mTORC1 kinase activity in macrophages, leading to dephosphorylation of its downstream targets, including transcription factor EB and ULK1. Consequently, SLIT2 augments lysosome biogenesis, potently induces autophagy, and robustly promotes the killing of bacteria within phagosomes. Concordant with these results, we demonstrate decreased lysosomal content and accumulated peroxisomes in the spinal cords of embryos from Robo1 -/- , Robo2 -/- double knockout mice. We also show that impediment of auto/paracrine SLIT-ROBO signaling axis in cancer cells leads to hyperactivation of mTORC1 and inhibition of autophagy. Together, these findings elucidate a central role of chemorepellent SLIT2 in the regulation of mTORC1 activity with important implications for innate immunity and cancer cell survival.
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Affiliation(s)
- Vikrant K Bhosle
- Cell Biology Program, The Hospital for Sick Children, Toronto, Canada
| | - Joel Mj Tan
- Cell Biology Program, The Hospital for Sick Children, Toronto, Canada
| | - Taoyingnan Li
- Cell Biology Program, The Hospital for Sick Children, Toronto, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - Rong Hua
- Cell Biology Program, The Hospital for Sick Children, Toronto, Canada
| | - Hyunwoo Kwon
- Cell Biology Program, The Hospital for Sick Children, Toronto, Canada
- Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Zhubing Li
- Cell Biology Program, The Hospital for Sick Children, Toronto, Canada
| | - Sajedabanu Patel
- Cell Biology Program, The Hospital for Sick Children, Toronto, Canada
| | - Marc Tessier-Lavigne
- Laboratory of Brain Development and Repair, Rockefeller University, New York, NY, USA
- Department of Biology, Stanford University, Stanford, CA, USA
| | - Lisa A Robinson
- Cell Biology Program, The Hospital for Sick Children, Toronto, Canada
- Institute of Medical Science, University of Toronto, Toronto, Canada
- Division of Nephrology, The Hospital for Sick Children, Toronto, Canada
- Department of Paediatrics, Faculty of Medicine, University of Toronto, Toronto, Canada
| | - Peter K Kim
- Cell Biology Program, The Hospital for Sick Children, Toronto, Canada
- Department of Biochemistry, University of Toronto, Toronto, Canada
| | - John H Brumell
- Cell Biology Program, The Hospital for Sick Children, Toronto, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, Canada
- Institute of Medical Science, University of Toronto, Toronto, Canada
- SickKids IBD Centre, Hospital for Sick Children, Toronto, Canada
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8
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Hua R, Wei J, Torres M, He Y, Li Y, Sun X, Wang L, Inoki K, Yoshida S. Identification of circular dorsal ruffles as signal platforms for the AKT pathway in glomerular podocytes. J Cell Physiol 2023; 238:1063-1079. [PMID: 36924084 DOI: 10.1002/jcp.30996] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 02/21/2023] [Accepted: 02/28/2023] [Indexed: 03/18/2023]
Abstract
Circular dorsal ruffles (CDRs) are rounded membrane ruffles induced by growth factors to function as precursors of the large-scale endocytosis called macropinocytosis. In addition to their role in cellular uptake, recent research using cell line systems has shown that CDRs/macropinocytosis regulate the canonical AKT-mTORC1 growth factor signaling pathway. However, as CDRs have not been observed in tissues, their physiological relevance has remained unclear. Here, utilizing ultrahigh-resolution scanning electron microscopy, we first report that CDRs are expressed in glomerular podocytes ex vivo and in vivo, and we visually captured the transformation process to macropinocytosis. Moreover, through biochemical and imaging analyses, we show that AKT phosphorylation localized to CDRs upstream of mTORC1 activation in podocyte cell lines and isolated glomeruli. These results demonstrate the physiological role of CDRs as signal platforms for the AKT-mTORC1 pathway in glomerular podocytes at the tissue level. As mTORC1 plays critical roles in podocyte metabolism, and aberrant activation of mTORC1 triggers podocytopathies, our results strongly suggest that targeting CDR formation could represent a potential therapeutic approach for these diseases.
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Affiliation(s)
- Rui Hua
- State Key Laboratory of Medicinal Chemical Biology, Frontiers Science Center for Cell Responses, College of Life Sciences, Nankai University, Tianjin, China
| | - Jinzi Wei
- State Key Laboratory of Medicinal Chemical Biology, Frontiers Science Center for Cell Responses, College of Life Sciences, Nankai University, Tianjin, China
| | - Mauricio Torres
- Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Yuxin He
- State Key Laboratory of Medicinal Chemical Biology, Frontiers Science Center for Cell Responses, College of Life Sciences, Nankai University, Tianjin, China
| | - Yanan Li
- State Key Laboratory of Medicinal Chemical Biology, Frontiers Science Center for Cell Responses, College of Life Sciences, Nankai University, Tianjin, China
| | - Xiaowei Sun
- State Key Laboratory of Medicinal Chemical Biology, Frontiers Science Center for Cell Responses, College of Life Sciences, Nankai University, Tianjin, China
| | - Li Wang
- State Key Laboratory of Medicinal Chemical Biology, Frontiers Science Center for Cell Responses, College of Life Sciences, Nankai University, Tianjin, China
| | - Ken Inoki
- Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, Michigan, USA.,Internal medicine and Life Sciences Institute, University of Michigan, Ann Arbor, Michigan, USA
| | - Sei Yoshida
- State Key Laboratory of Medicinal Chemical Biology, Frontiers Science Center for Cell Responses, College of Life Sciences, Nankai University, Tianjin, China.,Nankai International Advanced Research Institute, Shenzhen, China
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9
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Salloum G, Bresnick AR, Backer JM. Macropinocytosis: mechanisms and regulation. Biochem J 2023; 480:335-362. [PMID: 36920093 DOI: 10.1042/bcj20210584] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 02/22/2023] [Accepted: 02/27/2023] [Indexed: 03/16/2023]
Abstract
Macropinocytosis is defined as an actin-dependent but coat- and dynamin-independent endocytic uptake process, which generates large intracellular vesicles (macropinosomes) containing a non-selective sampling of extracellular fluid. Macropinocytosis provides an important mechanism of immune surveillance by dendritic cells and macrophages, but also serves as an essential nutrient uptake pathway for unicellular organisms and tumor cells. This review examines the cell biological mechanisms that drive macropinocytosis, as well as the complex signaling pathways - GTPases, lipid and protein kinases and phosphatases, and actin regulatory proteins - that regulate macropinosome formation, internalization, and disposition.
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Affiliation(s)
- Gilbert Salloum
- Department of Molecular Pharamacology, Albert Einstein College of Medicine, Bronx, NY, U.S.A
| | - Anne R Bresnick
- Department of Biochemistry, Albert Einstein College of Medicine, Bronx, NY, U.S.A
| | - Jonathan M Backer
- Department of Molecular Pharamacology, Albert Einstein College of Medicine, Bronx, NY, U.S.A
- Department of Biochemistry, Albert Einstein College of Medicine, Bronx, NY, U.S.A
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10
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Hirose H, Maekawa M, Ida H, Kuriyama M, Takahashi Y, Futaki S. A noncanonical endocytic pathway is involved in the internalization of 3 μm polystyrene beads into HeLa cells. Biomater Sci 2022; 10:7093-7102. [PMID: 36326722 DOI: 10.1039/d2bm01353c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Extracellular fine particles of various sizes and origins can be taken up by cells, affecting their function. Understanding the cellular uptake processes is crucial for understanding the cellular effects of these particles and the development of means to control their internalization. Although macropinocytosis is a possible pathway for the cellular uptake of particles larger than 0.2 μm, its contribution to cellular uptake in non-phagocytic cells is controversial. Using 3 μm polystyrene beads as a model particle, we aimed to assess the detailed modes of their cellular uptake by non-phagocytic HeLa cells. Cellular uptake was assessed using confocal, scanning electron, and scanning ion conductance microscopy analyses, together with inhibitor studies. Our results revealed that 3 μm beads were taken up by HeLa cells by an actin-, cholesterol-, and membrane protrusions-dependent noncanonical endocytic pathway, different from the canonical macropinocytic and phagocytic pathways. Our work provides a framework for studying the cellular uptake of extracellular fine particles.
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Affiliation(s)
- Hisaaki Hirose
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan.
| | - Masashi Maekawa
- Division of Physiological Chemistry and Metabolism, Graduate School of Pharmaceutical Sciences, Keio University, Minato-ku, Tokyo 105-8512, Japan
| | - Hiroki Ida
- Department of Electrical Engineering, Graduate School of Engineering, Nagoya University, Aichi 464-8601, Japan.,The Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Miyagi 980-8578, Japan.,Precursory Research for Embryonic Science and Technology, Science and Technology Agency (JST), Saitama 332-0012, Japan.,Advanced Institute for Materials Research, Tohoku University, Miyagi 980-8577, Japan.,Graduate School of Environmental Studies, Tohoku University, Miyagi 980-8579, Japan
| | - Masashi Kuriyama
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan.
| | - Yasufumi Takahashi
- Department of Electrical Engineering, Graduate School of Engineering, Nagoya University, Aichi 464-8601, Japan.,WPI Nano Life Science Institute (WPI NanoLSI), Kanazawa University, Ishikawa 920-1192, Japan
| | - Shiroh Futaki
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan.
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11
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Youden B, Jiang R, Carrier AJ, Servos MR, Zhang X. A Nanomedicine Structure-Activity Framework for Research, Development, and Regulation of Future Cancer Therapies. ACS NANO 2022; 16:17497-17551. [PMID: 36322785 DOI: 10.1021/acsnano.2c06337] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Despite their clinical success in drug delivery applications, the potential of theranostic nanomedicines is hampered by mechanistic uncertainty and a lack of science-informed regulatory guidance. Both the therapeutic efficacy and the toxicity of nanoformulations are tightly controlled by the complex interplay of the nanoparticle's physicochemical properties and the individual patient/tumor biology; however, it can be difficult to correlate such information with observed outcomes. Additionally, as nanomedicine research attempts to gradually move away from large-scale animal testing, the need for computer-assisted solutions for evaluation will increase. Such models will depend on a clear understanding of structure-activity relationships. This review provides a comprehensive overview of the field of cancer nanomedicine and provides a knowledge framework and foundational interaction maps that can facilitate future research, assessments, and regulation. By forming three complementary maps profiling nanobio interactions and pathways at different levels of biological complexity, a clear picture of a nanoparticle's journey through the body and the therapeutic and adverse consequences of each potential interaction are presented.
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Affiliation(s)
- Brian Youden
- Department of Biology, University of Waterloo, 200 University Ave. W, Waterloo, Ontario N2L 3G1, Canada
| | - Runqing Jiang
- Department of Biology, University of Waterloo, 200 University Ave. W, Waterloo, Ontario N2L 3G1, Canada
- Department of Medical Physics, Grand River Regional Cancer Centre, Kitchener, Ontario N2G 1G3, Canada
| | - Andrew J Carrier
- Department of Chemistry, Cape Breton University, 1250 Grand Lake Road, Sydney, Nova Scotia B1P 6L2, Canada
| | - Mark R Servos
- Department of Biology, University of Waterloo, 200 University Ave. W, Waterloo, Ontario N2L 3G1, Canada
| | - Xu Zhang
- Department of Biology, University of Waterloo, 200 University Ave. W, Waterloo, Ontario N2L 3G1, Canada
- Department of Chemistry, Cape Breton University, 1250 Grand Lake Road, Sydney, Nova Scotia B1P 6L2, Canada
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12
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Circular dorsal ruffles disturb the growth factor-induced PI3K-AKT pathway in hepatocellular carcinoma Hep3B cells. Cell Commun Signal 2022; 20:102. [PMID: 35799301 PMCID: PMC9264614 DOI: 10.1186/s12964-022-00911-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 06/05/2022] [Indexed: 11/10/2022] Open
Abstract
Background Circular dorsal ruffles (CDRs) are rounded membrane ruffles induced on the dorsal surfaces of cells stimulated by growth factors (GF). They can serve as signal platforms to activate AKT protein kinase. After GF stimulation, phosphatidylinositol 3-kinase (PI3K) generates phosphatidylinositol (3,4,5)-triphosphate (PIP3) in the plasma membrane. PIP3 accumulates inside CDRs, recruits AKT into the structures, and phosphorylates them (pAKT). Given the importance of the PI3K-AKT pathway in GF signaling, CDRs are likely involved in cell growth. Interestingly, some cancer cell lines express CDRs. We hypothesized that CDRs contribute to carcinogenesis by modulating the AKT pathway. In the present study, we identified CDR-expressing cancer cell lines and investigated their cellular functions. Methods CDR formation was examined in six cancer cell lines in response to epidermal growth factor (EGF) and insulin. The morphology of the CDRs was characterized, and the related signaling molecules were observed using confocal and scanning electron microscopy. The role of CDRs in the AKT pathway was studied using biochemical analysis. The actin inhibitor cytochalasin D (Cyto D) and the PI3K inhibitor TGX221 were used to block CDRs. Results GF treatment induced CDRs in the hepatocellular carcinoma (HCC) Hep3B cell line, but not in others, including HCC cell lines HepG2 and Huh7, and the LO2 hepatocyte cell line. Confocal microscopy and western blot analysis showed that the PI3K-PIP3-AKT pathway was activated at the CDRs and that receptor proteins were recruited to the structures. Cyto D and TGX221 completely blocked CDRs and partially attenuated GF-induced pAKT. These results indicate that CDRs regulate the receptor-mediated PI3K-AKT pathway in Hep3B cells and the existence of CDR-independent pAKT mechanisms. Conclusions Our results showed that CDRs modulate the AKT pathway in Hep3B cells. Since CDRs were not observed in other HCC and hepatocyte cell lines, we propose that CDRs in Hep3B would determine the carcinoma characteristic of the cell by aberrantly triggering the AKT pathway. Signaling molecules involved in CDR formation are promising therapeutic targets for some types of HCC. Video abstract
Supplementary Information The online version contains supplementary material available at 10.1186/s12964-022-00911-6.
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13
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Piezo1 activation using Yoda1 inhibits macropinocytosis in A431 human epidermoid carcinoma cells. Sci Rep 2022; 12:6322. [PMID: 35428847 PMCID: PMC9012786 DOI: 10.1038/s41598-022-10153-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 03/09/2022] [Indexed: 11/08/2022] Open
Abstract
Macropinocytosis is a type of endocytosis accompanied by actin rearrangement-driven membrane deformation, such as lamellipodia formation and membrane ruffling, followed by the formation of large vesicles, macropinosomes. Ras-transformed cancer cells efficiently acquire exogenous amino acids for their survival through macropinocytosis. Thus, inhibition of macropinocytosis is a promising strategy for cancer therapy. To date, few specific agents that inhibit macropinocytosis have been developed. Here, focusing on the mechanosensitive ion channel Piezo1, we found that Yoda1, a Piezo1 agonist, potently inhibits macropinocytosis induced by epidermal growth factor (EGF). The inhibition of ruffle formation by Yoda1 was dependent on the extracellular Ca2+ influx through Piezo1 and on the activation of the calcium-activated potassium channel KCa3.1. This suggests that Ca2+ ions can regulate EGF-stimulated macropinocytosis. We propose the potential for macropinocytosis inhibition through the regulation of a mechanosensitive channel activity using chemical tools.
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14
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Mendel ZI, Reynolds MB, Abuaita BH, O'Riordan MX, Swanson JA. Amino acids suppress macropinocytosis and promote release of CSF1 receptor in macrophages. J Cell Sci 2022; 135:jcs259284. [PMID: 35107133 PMCID: PMC8919328 DOI: 10.1242/jcs.259284] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 12/31/2021] [Indexed: 01/12/2023] Open
Abstract
The internalization of solutes by macropinocytosis provides an essential route for nutrient uptake in many cells. Macrophages increase macropinocytosis in response to growth factors and other stimuli. To test the hypothesis that nutrient environments modulate solute uptake by macropinocytosis, this study analyzed the effects of extracellular amino acids on the accumulation of fluorescent fluid-phase probes in murine macrophages. Nine amino acids, added individually or together, were capable of suppressing macropinocytosis in murine bone marrow-derived macrophages stimulated with the growth factors colony stimulating factor 1 (CSF1) or interleukin 34, both ligands of the CSF1 receptor (CSF1R). The suppressive amino acids did not inhibit macropinocytosis in response to lipopolysaccharide, the chemokine CXCL12, or the tumor promoter phorbol myristate acetate. Suppressive amino acids promoted release of CSF1R from cells and resulted in the formation of smaller macropinosomes in response to CSF1. This suppression of growth factor-stimulated macropinocytosis indicates that different nutrient environments modulate CSF1R levels and bulk ingestion by macropinocytosis, with likely consequences for macrophage growth and function.
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Affiliation(s)
- Zachary I. Mendel
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI 48109,USA
| | - Mack B. Reynolds
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI 48109,USA
- Graduate Program in Immunology, University of Michigan Medical School, Ann Arbor, MI 48109,USA
| | - Basel H. Abuaita
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI 48109,USA
| | - Mary X. O'Riordan
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI 48109,USA
| | - Joel A. Swanson
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI 48109,USA
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15
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Zhang YF, Li Q, Huang PQ, Su T, Jiang SH, Hu LP, Zhang XL, Sun Y, Pan H, Yang XM, Li J, Gai YZ, Zhu L, Yao LL, Li DX, Sun YW, Zhang ZG, Liu DJ, Zhang YL, Nie HZ. A low amino acid environment promotes cell macropinocytosis through the YY1-FGD6 axis in Ras-mutant pancreatic ductal adenocarcinoma. Oncogene 2022; 41:1203-1215. [PMID: 35082383 DOI: 10.1038/s41388-021-02159-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 11/16/2021] [Accepted: 12/14/2021] [Indexed: 11/09/2022]
Abstract
Pancreatic ductal adenocarcinoma (PDAC), cancer with a high mortality rate and the highest rate of KRAS mutation, reportedly internalizes proteins via macropinocytosis to adapt to low amino acid levels in the tumor microenvironment. Here, we aimed to identify a key regulator of macropinocytosis for the survival of tumor cells in a low amino acid environment in PDAC. FYVE, RhoGEF, and PH domain-containing protein 6 (FGD6) were identified as key regulators of macropinocytosis. FGD6 promoted PDAC cell proliferation, macropinocytosis, and tumor growth both in vitro and in vivo. The macropinocytosis level was decreased with FGD6 knockdown in PDAC cell lines. Moreover, FGD6 promoted macropinocytosis by participating in the trans-Golgi network and enhancing the membrane localization of growth factor receptors, especially the TGF-beta receptor. TGF-beta enhanced macropinocytosis in PDAC cells. Additionally, YAP nuclear translocation induced by a low amino acid tumor environment initiated FGD6 expression by coactivation with YY1. Clinical data analysis based on TCGA and GEO datasets showed that FGD6 expression was upregulated in PDAC tissue, and high FGD6 expression was correlated with poor prognosis in patients with PDAC. In tumor tissue from KrasG12D/+/Trp53R172H/-/Pdx1-Cre (KPC) mice, FGD6 expression escalated during PDAC development. Our results uncover a previously unappreciated mechanism of macropinocytosis in PDAC. Strategies to target FGD6 and growth factors membrane localization might be developed for the treatment of PDAC.
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Affiliation(s)
- Yi-Fan Zhang
- State Key Laboratory of Oncogenes and Related Genes, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Qing Li
- State Key Laboratory of Oncogenes and Related Genes, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Pei-Qi Huang
- State Key Laboratory of Oncogenes and Related Genes, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Tong Su
- Department of Gynecology and Obstetrics, Shanghai Key Laboratory of Gynecology and Oncology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China
| | - Shu-Heng Jiang
- State Key Laboratory of Oncogenes and Related Genes, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Li-Peng Hu
- State Key Laboratory of Oncogenes and Related Genes, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Xue-Li Zhang
- State Key Laboratory of Oncogenes and Related Genes, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yue Sun
- State Key Laboratory of Oncogenes and Related Genes, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Hong Pan
- State Key Laboratory of Oncogenes and Related Genes, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Xiao-Mei Yang
- State Key Laboratory of Oncogenes and Related Genes, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Jun Li
- State Key Laboratory of Oncogenes and Related Genes, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yan-Zhi Gai
- State Key Laboratory of Oncogenes and Related Genes, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Lei Zhu
- State Key Laboratory of Oncogenes and Related Genes, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Lin-Li Yao
- State Key Laboratory of Oncogenes and Related Genes, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Dong-Xue Li
- State Key Laboratory of Oncogenes and Related Genes, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yong-Wei Sun
- Department of Biliary-Pancreatic Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China
| | - Zhi-Gang Zhang
- State Key Laboratory of Oncogenes and Related Genes, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - De-Jun Liu
- Department of Biliary-Pancreatic Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China.
| | - Yan-Li Zhang
- State Key Laboratory of Oncogenes and Related Genes, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200240, China.
| | - Hui-Zhen Nie
- State Key Laboratory of Oncogenes and Related Genes, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200240, China.
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16
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Abstract
Macropinocytosis is a critical route of nutrient acquisition in pancreatic cancer cells. Constitutive macropinocytosis is promoted by mutant KRAS, which activates the PI3Kα lipid kinase and RAC1, to drive membrane ruffling, macropinosome uptake and processing. However, our recent study on the KRASG12R mutant indicated the presence of a KRAS-independent mode of macropinocytosis in pancreatic cancer cell lines, thereby increasing the complexity of this process. We found that KRASG12R-mutant cell lines promote macropinocytosis independent of KRAS activity using PI3Kγ and RAC1, highlighting the convergence of regulation on RAC signaling. While macropinocytosis has been proposed to be a therapeutic target for the treatment of pancreatic cancer, our studies have underscored how little we understand about the activation and regulation of this metabolic process. Therefore, this review seeks to highlight the differences in macropinocytosis regulation in the two cellular subtypes while also highlighting the features that make the KRASG12R mutant atypical.
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Affiliation(s)
- G Aaron Hobbs
- Department of Cell and Molecular Pharmacology and Experimental Therapeutics, Medical University of South Carolina, Charleston, SC, USA.
- Hollings Cancer Center, Medical University of South Carolina, Charleston, SC, USA.
| | - Channing J Der
- Department of Pharmacology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Curriculum in Genetics and Molecular Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
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17
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Stévenin V, Giai Gianetto Q, Duchateau M, Matondo M, Enninga J, Chang YY. Purification of infection-associated macropinosomes by magnetic isolation for proteomic characterization. Nat Protoc 2021; 16:5220-5249. [PMID: 34697468 DOI: 10.1038/s41596-021-00610-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 08/03/2021] [Indexed: 02/08/2023]
Abstract
Macropinocytosis refers to the nonselective uptake of extracellular molecules into many different types of eukaryotic cells within large fluid-filled vesicles named macropinosomes. Macropinosomes are relevant for a wide variety of cellular processes, such as antigen sampling in immune cells, homeostasis in the kidney, cell migration or pathogen uptake. Understanding the molecular composition of the different macropinosomes formed during these processes has helped to differentiate their regulations from other endocytic events. Here, we present a magnetic purification protocol that segregates scarce macropinosomes from other endocytic vesicles at a high purity and in a low-cost and unbiased manner. Our protocol takes advantage of moderate-sized magnetic beads of 100 nm in diameter coupled to mass-spectrometry-based proteomic analysis. Passing the cell lysate through a table-top magnet allows the quick retention of the bead-containing macropinosomes. Unlike other cell-fractionation-based methodologies, our protocol minimizes sample loss and production cost without prerequisite knowledge of the macropinosomes and with minimal laboratory experience. We describe a detailed procedure for the isolation of infection-associated macropinosomes during bacterial invasion and the optimization steps to readily adapt it to various studies. The protocol can be performed in 3 d to provide highly purified and enriched macropinosomes for qualitative proteomic composition analysis.
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Affiliation(s)
- Virginie Stévenin
- Institut Pasteur, Dynamics of Host-Pathogen Interactions Unit and CNRS UMR 3691, Paris, France.
- Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, the Netherlands.
- Université de Paris, Ecole Doctorale BioSPC, Paris, France.
| | - Quentin Giai Gianetto
- Proteomics Platform, Mass Spectrometry for Biology Unit, Institut Pasteur, USR 2000 CNRS, Paris, France
- Hub Bioinformatics et Biostatistics, Computational Biology Department, USR CNRS, Institut Pasteur, Paris, France
| | - Magalie Duchateau
- Proteomics Platform, Mass Spectrometry for Biology Unit, Institut Pasteur, USR 2000 CNRS, Paris, France
| | - Mariette Matondo
- Proteomics Platform, Mass Spectrometry for Biology Unit, Institut Pasteur, USR 2000 CNRS, Paris, France
| | - Jost Enninga
- Institut Pasteur, Dynamics of Host-Pathogen Interactions Unit and CNRS UMR 3691, Paris, France
| | - Yuen-Yan Chang
- Institut Pasteur, Dynamics of Host-Pathogen Interactions Unit and CNRS UMR 3691, Paris, France.
- Division of Molecular and Cellular Biology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA.
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18
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Saito N, Sawai S. Three-dimensional morphodynamic simulations of macropinocytic cups. iScience 2021; 24:103087. [PMID: 34755081 PMCID: PMC8560551 DOI: 10.1016/j.isci.2021.103087] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 08/13/2021] [Accepted: 09/01/2021] [Indexed: 12/02/2022] Open
Abstract
Macropinocytosis refers to the non-specific uptake of extracellular fluid, which plays ubiquitous roles in cell growth, immune surveillance, and virus entry. Despite its widespread occurrence, it remains unclear how its initial cup-shaped plasma membrane extensions form without any external solid support, as opposed to the process of particle uptake during phagocytosis. Here, by developing a computational framework that describes the coupling between the bistable reaction-diffusion processes of active signaling patches and membrane deformation, we demonstrated that the protrusive force localized to the edge of the patches can give rise to a self-enclosing cup structure, without further assumptions of local bending or contraction. Efficient uptake requires a balance among the patch size, magnitude of protrusive force, and cortical tension. Furthermore, our model exhibits cyclic cup formation, coexistence of multiple cups, and cup-splitting, indicating that these complex morphologies self-organize via a common mutually-dependent process of reaction-diffusion and membrane deformation.
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Affiliation(s)
- Nen Saito
- Exploratory Research Center on Life and Living Systems, National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji-cho, Okazaki, Aichi 444-8787, Japan
| | - Satoshi Sawai
- Department of Basic Science, University of Tokyo, Meguro-ku, Tokyo 153-8902, Japan
- Research Center for Complex Systems Biology, Graduate School of Arts and Sciences, University of Tokyo, Meguro-ku, Tokyo 153-8902, Japan
- Department of Biological Sciences, Graduate School of Science, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
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19
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Quinn SE, Huang L, Kerkvliet JG, Swanson JA, Smith S, Hoppe AD, Anderson RB, Thiex NW, Scott BL. The structural dynamics of macropinosome formation and PI3-kinase-mediated sealing revealed by lattice light sheet microscopy. Nat Commun 2021. [PMID: 34376698 DOI: 10.1101/2020.12.01.390195] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2023] Open
Abstract
Macropinosomes are formed by shaping actin-rich plasma membrane ruffles into large intracellular organelles in a phosphatidylinositol 3-kinase (PI3K)-coordinated manner. Here, we utilize lattice lightsheet microscopy and image visualization methods to map the three-dimensional structure and dynamics of macropinosome formation relative to PI3K activity. We show that multiple ruffling morphologies produce macropinosomes and that the majority form through collisions of adjacent PI3K-rich ruffles. By combining multiple volumetric representations of the plasma membrane structure and PI3K products, we show that PI3K activity begins early throughout the entire ruffle volume and continues to increase until peak activity concentrates at the base of the ruffle after the macropinosome closes. Additionally, areas of the plasma membrane rich in ruffling had increased PI3K activity and produced many macropinosomes of various sizes. Pharmacologic inhibition of PI3K activity had little effect on the rate and morphology of membrane ruffling, demonstrating that early production of 3'-phosphoinositides within ruffles plays a minor role in regulating their morphology. However, 3'-phosphoinositides are critical for the fusogenic activity that seals ruffles into macropinosomes. Taken together, these data indicate that local PI3K activity is amplified in ruffles and serves as a priming mechanism for closure and sealing of ruffles into macropinosomes.
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Affiliation(s)
- Shayne E Quinn
- Nanoscience and Nanoengineering, South Dakota School of Mines and Technology (South Dakota Mines), Rapid City, SD, USA
- BioSNTR, South Dakota Mines, Rapid City, SD, USA
| | - Lu Huang
- Department of Biology and Microbiology, South Dakota State University (SDSU), Brookings, SD, USA
- BioSNTR, SDSU, Brookings, SD, USA
| | - Jason G Kerkvliet
- BioSNTR, SDSU, Brookings, SD, USA
- Department of Chemistry and Biochemistry, SDSU, Brookings, SD, USA
| | - Joel A Swanson
- Department of Microbiology and Immunology, University of Michigan, Ann Arbor, MI, USA
| | - Steve Smith
- Nanoscience and Nanoengineering, South Dakota School of Mines and Technology (South Dakota Mines), Rapid City, SD, USA
- BioSNTR, South Dakota Mines, Rapid City, SD, USA
| | - Adam D Hoppe
- BioSNTR, SDSU, Brookings, SD, USA
- Department of Chemistry and Biochemistry, SDSU, Brookings, SD, USA
| | - Robert B Anderson
- Nanoscience and Nanoengineering, South Dakota School of Mines and Technology (South Dakota Mines), Rapid City, SD, USA.
- BioSNTR, South Dakota Mines, Rapid City, SD, USA.
| | - Natalie W Thiex
- Department of Biology and Microbiology, South Dakota State University (SDSU), Brookings, SD, USA.
- BioSNTR, SDSU, Brookings, SD, USA.
| | - Brandon L Scott
- Nanoscience and Nanoengineering, South Dakota School of Mines and Technology (South Dakota Mines), Rapid City, SD, USA.
- BioSNTR, South Dakota Mines, Rapid City, SD, USA.
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20
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Quinn SE, Huang L, Kerkvliet JG, Swanson JA, Smith S, Hoppe AD, Anderson RB, Thiex NW, Scott BL. The structural dynamics of macropinosome formation and PI3-kinase-mediated sealing revealed by lattice light sheet microscopy. Nat Commun 2021; 12:4838. [PMID: 34376698 PMCID: PMC8355319 DOI: 10.1038/s41467-021-25187-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 07/22/2021] [Indexed: 12/11/2022] Open
Abstract
Macropinosomes are formed by shaping actin-rich plasma membrane ruffles into large intracellular organelles in a phosphatidylinositol 3-kinase (PI3K)-coordinated manner. Here, we utilize lattice lightsheet microscopy and image visualization methods to map the three-dimensional structure and dynamics of macropinosome formation relative to PI3K activity. We show that multiple ruffling morphologies produce macropinosomes and that the majority form through collisions of adjacent PI3K-rich ruffles. By combining multiple volumetric representations of the plasma membrane structure and PI3K products, we show that PI3K activity begins early throughout the entire ruffle volume and continues to increase until peak activity concentrates at the base of the ruffle after the macropinosome closes. Additionally, areas of the plasma membrane rich in ruffling had increased PI3K activity and produced many macropinosomes of various sizes. Pharmacologic inhibition of PI3K activity had little effect on the rate and morphology of membrane ruffling, demonstrating that early production of 3'-phosphoinositides within ruffles plays a minor role in regulating their morphology. However, 3'-phosphoinositides are critical for the fusogenic activity that seals ruffles into macropinosomes. Taken together, these data indicate that local PI3K activity is amplified in ruffles and serves as a priming mechanism for closure and sealing of ruffles into macropinosomes.
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Affiliation(s)
- Shayne E Quinn
- Nanoscience and Nanoengineering, South Dakota School of Mines and Technology (South Dakota Mines), Rapid City, SD, USA
- BioSNTR, South Dakota Mines, Rapid City, SD, USA
| | - Lu Huang
- Department of Biology and Microbiology, South Dakota State University (SDSU), Brookings, SD, USA
- BioSNTR, SDSU, Brookings, SD, USA
| | - Jason G Kerkvliet
- BioSNTR, SDSU, Brookings, SD, USA
- Department of Chemistry and Biochemistry, SDSU, Brookings, SD, USA
| | - Joel A Swanson
- Department of Microbiology and Immunology, University of Michigan, Ann Arbor, MI, USA
| | - Steve Smith
- Nanoscience and Nanoengineering, South Dakota School of Mines and Technology (South Dakota Mines), Rapid City, SD, USA
- BioSNTR, South Dakota Mines, Rapid City, SD, USA
| | - Adam D Hoppe
- BioSNTR, SDSU, Brookings, SD, USA
- Department of Chemistry and Biochemistry, SDSU, Brookings, SD, USA
| | - Robert B Anderson
- Nanoscience and Nanoengineering, South Dakota School of Mines and Technology (South Dakota Mines), Rapid City, SD, USA.
- BioSNTR, South Dakota Mines, Rapid City, SD, USA.
| | - Natalie W Thiex
- Department of Biology and Microbiology, South Dakota State University (SDSU), Brookings, SD, USA.
- BioSNTR, SDSU, Brookings, SD, USA.
| | - Brandon L Scott
- Nanoscience and Nanoengineering, South Dakota School of Mines and Technology (South Dakota Mines), Rapid City, SD, USA.
- BioSNTR, South Dakota Mines, Rapid City, SD, USA.
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21
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Varma S, Dey S, S P D. Cellular Uptake Pathways of Nanoparticles: Process of Endocytosis and Factors Affecting Their Fate. Curr Pharm Biotechnol 2021; 23:679-706. [PMID: 34264182 DOI: 10.2174/1389201022666210714145356] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 05/06/2021] [Accepted: 05/07/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Efficient and controlled internalization of NPs into the cells depends on their physicochemical properties and dynamics of the plasma membrane. NPs-cell interaction is a complex process that decides the fate of NPs internalization through different endocytosis pathways. OBJECTIVE The aim of this review is to highlight the physicochemical properties of synthesized nanoparticles (NPs) and their interaction with the cellular-dynamics and pathways like phagocytosis, pinocytosis, macropinocytosis, clathrin, and caveolae-mediated endocytosis and the involvement of effector proteins domain such as clathrin, AP2, caveolin, Arf6, Cdc42, dynamin and cell surface receptors during the endocytosis process of NPs. METHOD An electronic search was performed to explore the focused reviews and research articles on types of endocytosis and physicochemical properties of nanoparticles and their impact on cellular internalizations. The search was limited to peer-reviewed journals in the PubMed database. RESULTS This article discusses in detail how different types of NPs and their physicochemical properties such as size, shape, aspect ratio, surface charge, hydrophobicity, elasticity, stiffness, corona formation, surface functionalization changes the pattern of endocytosis in the presence of different pharmacological blockers. Some external forces like a magnetic field, electric field, and ultrasound exploit the cell membrane dynamics to permeabilize them for efficient internalization with respect to fundamental principles of membrane bending and pore formation. CONCLUSION This review will be useful to attract and guide the audience to understand the endocytosis mechanism and their pattern with respect to physicochemical properties of NPs to improve their efficacy and targeting to achieve the impactful outcome in drug-delivery and theranostics applications.
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Affiliation(s)
- Sameer Varma
- Department of Pharmaceutical Biotechnology, JSS Academy of Higher Education & Research- JSS College of Pharmacy, Ooty-643001, Tamil Nadu, India
| | - Smita Dey
- Department of Pharmaceutical Biotechnology, JSS Academy of Higher Education & Research- JSS College of Pharmacy, Ooty-643001, Tamil Nadu, India
| | - Dhanabal S P
- Department of Pharmacognosy & Phytopharmacy, JSS Academy of Higher Education & Research- JSS College of Pharmacy, Ooty-643001, Tamil Nadu, India
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22
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Kay RR. Macropinocytosis: Biology and mechanisms. Cells Dev 2021; 168:203713. [PMID: 34175511 DOI: 10.1016/j.cdev.2021.203713] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 05/25/2021] [Accepted: 06/21/2021] [Indexed: 12/24/2022]
Abstract
Macropinocytosis is a form of endocytosis performed by ruffles and cups of the plasma membrane. These close to entrap droplets of medium into micron-sized vesicles, which are trafficked through the endocytic system, their contents digested and useful products absorbed. Macropinocytosis is constitutive in certain immune cells and stimulated in many other cells by growth factors. It occurs across the animal kingdom and in amoebae, implying a deep evolutionary history. Its scientific history goes back 100 years, but increasingly work is focused on its medical importance in the immune system, cancer cell feeding, and as a backdoor into cells for viruses and drugs. Macropinocytosis is driven by the actin cytoskeleton whose dynamics can be appreciated with lattice light sheet microscopy: this reveals a surprising variety of routes for forming macropinosomes. In Dictyostelium amoebae, macropinocytic cups are organized around domains of PIP3 and active Ras and Rac in the plasma membrane. These attract activators of the Arp2/3 complex to their periphery, creating rings of actin polymerization that shape the cups. The size of PIP3 domains is controlled by RasGAPs, such as NF1, and the lipid phosphatase, PTEN. It is likely that domain dynamics determine the shape, evolution and closing of macropinocytic structures.
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Affiliation(s)
- Robert R Kay
- MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, UK.
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23
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Ritter M, Bresgen N, Kerschbaum HH. From Pinocytosis to Methuosis-Fluid Consumption as a Risk Factor for Cell Death. Front Cell Dev Biol 2021; 9:651982. [PMID: 34249909 PMCID: PMC8261248 DOI: 10.3389/fcell.2021.651982] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 04/29/2021] [Indexed: 12/11/2022] Open
Abstract
The volumes of a cell [cell volume (CV)] and its organelles are adjusted by osmoregulatory processes. During pinocytosis, extracellular fluid volume equivalent to its CV is incorporated within an hour and membrane area equivalent to the cell's surface within 30 min. Since neither fluid uptake nor membrane consumption leads to swelling or shrinkage, cells must be equipped with potent volume regulatory mechanisms. Normally, cells respond to outwardly or inwardly directed osmotic gradients by a volume decrease and increase, respectively, i.e., they shrink or swell but then try to recover their CV. However, when a cell death (CD) pathway is triggered, CV persistently decreases in isotonic conditions in apoptosis and it increases in necrosis. One type of CD associated with cell swelling is due to a dysfunctional pinocytosis. Methuosis, a non-apoptotic CD phenotype, occurs when cells accumulate too much fluid by macropinocytosis. In contrast to functional pinocytosis, in methuosis, macropinosomes neither recycle nor fuse with lysosomes but with each other to form giant vacuoles, which finally cause rupture of the plasma membrane (PM). Understanding methuosis longs for the understanding of the ionic mechanisms of cell volume regulation (CVR) and vesicular volume regulation (VVR). In nascent macropinosomes, ion channels and transporters are derived from the PM. Along trafficking from the PM to the perinuclear area, the equipment of channels and transporters of the vesicle membrane changes by retrieval, addition, and recycling from and back to the PM, causing profound changes in vesicular ion concentrations, acidification, and-most importantly-shrinkage of the macropinosome, which is indispensable for its proper targeting and cargo processing. In this review, we discuss ion and water transport mechanisms with respect to CVR and VVR and with special emphasis on pinocytosis and methuosis. We describe various aspects of the complex mutual interplay between extracellular and intracellular ions and ion gradients, the PM and vesicular membrane, phosphoinositides, monomeric G proteins and their targets, as well as the submembranous cytoskeleton. Our aim is to highlight important cellular mechanisms, components, and processes that may lead to methuotic CD upon their derangement.
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Affiliation(s)
- Markus Ritter
- Center for Physiology, Pathophysiology and Biophysics, Institute for Physiology and Pathophysiology, Paracelsus Medical University, Salzburg, Austria
- Institute for Physiology and Pathophysiology, Paracelsus Medical University, Nuremberg, Germany
- Gastein Research Institute, Paracelsus Medical University, Salzburg, Austria
- Ludwig Boltzmann Institute for Arthritis und Rehabilitation, Salzburg, Austria
- Kathmandu University School of Medical Sciences, Dhulikhel, Nepal
| | - Nikolaus Bresgen
- Department of Biosciences, University of Salzburg, Salzburg, Austria
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24
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Sousa de Almeida M, Susnik E, Drasler B, Taladriz-Blanco P, Petri-Fink A, Rothen-Rutishauser B. Understanding nanoparticle endocytosis to improve targeting strategies in nanomedicine. Chem Soc Rev 2021; 50:5397-5434. [PMID: 33666625 PMCID: PMC8111542 DOI: 10.1039/d0cs01127d] [Citation(s) in RCA: 351] [Impact Index Per Article: 117.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Indexed: 12/19/2022]
Abstract
Nanoparticles (NPs) have attracted considerable attention in various fields, such as cosmetics, the food industry, material design, and nanomedicine. In particular, the fast-moving field of nanomedicine takes advantage of features of NPs for the detection and treatment of different types of cancer, fibrosis, inflammation, arthritis as well as neurodegenerative and gastrointestinal diseases. To this end, a detailed understanding of the NP uptake mechanisms by cells and intracellular localization is essential for safe and efficient therapeutic applications. In the first part of this review, we describe the several endocytic pathways involved in the internalization of NPs and we discuss the impact of the physicochemical properties of NPs on this process. In addition, the potential challenges of using various inhibitors, endocytic markers and genetic approaches to study endocytosis are addressed along with the principal (semi) quantification methods of NP uptake. The second part focuses on synthetic and bio-inspired substances, which can stimulate or decrease the cellular uptake of NPs. This approach could be interesting in nanomedicine where a high accumulation of drugs in the target cells is desirable and clearance by immune cells is to be avoided. This review contributes to an improved understanding of NP endocytic pathways and reveals potential substances, which can be used in nanomedicine to improve NP delivery.
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Affiliation(s)
- Mauro Sousa de Almeida
- Adolphe Merkle Institute, University of FribourgChemin des Verdiers 41700 FribourgSwitzerland
| | - Eva Susnik
- Adolphe Merkle Institute, University of FribourgChemin des Verdiers 41700 FribourgSwitzerland
| | - Barbara Drasler
- Adolphe Merkle Institute, University of FribourgChemin des Verdiers 41700 FribourgSwitzerland
| | | | - Alke Petri-Fink
- Adolphe Merkle Institute, University of FribourgChemin des Verdiers 41700 FribourgSwitzerland
- Department of Chemistry, University of FribourgChemin du Musée 91700 FribourgSwitzerland
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25
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Camblor-Perujo S, Kononenko NL. Brain-specific functions of the endocytic machinery. FEBS J 2021; 289:2219-2246. [PMID: 33896112 DOI: 10.1111/febs.15897] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 03/29/2021] [Indexed: 12/12/2022]
Abstract
Endocytosis is an essential cellular process required for multiple physiological functions, including communication with the extracellular environment, nutrient uptake, and signaling by the cell surface receptors. In a broad sense, endocytosis is accomplished through either constitutive or ligand-induced invagination of the plasma membrane, which results in the formation of the plasma membrane-retrieved endocytic vesicles, which can either be sent for degradation to the lysosomes or recycled back to the PM. This additional function of endocytosis in membrane retrieval has been adopted by excitable cells, such as neurons, for membrane equilibrium maintenance at synapses. The last two decades were especially productive with respect to the identification of brain-specific functions of the endocytic machinery, which additionally include but not limited to regulation of neuronal differentiation and migration, maintenance of neuron morphology and synaptic plasticity, and prevention of neurotoxic aggregates spreading. In this review, we highlight the current knowledge of brain-specific functions of endocytic machinery with a specific focus on three brain cell types, neuronal progenitor cells, neurons, and glial cells.
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Affiliation(s)
| | - Natalia L Kononenko
- CECAD Cluster of Excellence, University of Cologne, Germany.,Center for Physiology & Pathophysiology, Medical Faculty, University of Cologne, Germany
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26
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Ida H, Takahashi Y, Kumatani A, Shiku H, Murayama T, Hirose H, Futaki S, Matsue T. Nanoscale Visualization of Morphological Alteration of Live-Cell Membranes by the Interaction with Oligoarginine Cell-Penetrating Peptides. Anal Chem 2021; 93:5383-5393. [PMID: 33769789 DOI: 10.1021/acs.analchem.0c04097] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The interactions between the cell membrane and biomolecules remain poorly understood. For example, arginine-rich cell-penetrating peptides (CPPs), including octaarginines (R8), are internalized by interactions with cell membranes. However, during the internalization process, the exact membrane dynamics introduced by these CPPs are still unknown. Here, we visualize arginine-rich CPPs and cell-membrane interaction-induced morphological changes using a system that combines scanning ion-conductance microscopy and spinning-disk confocal microscopy, using fluorescently labeled R8. This system allows time-dependent, nanoscale visualization of structural dynamics in live-cell membranes. Various types of membrane remodeling caused by arginine-rich CPPs are thus observed. The induction of membrane ruffling and the cup closure are observed as a process of endocytic uptake of the peptide. Alternatively suggested is the concave structural formation accompanied by direct peptide translocation through cell membranes. Studies using R8 without fluorescent labeling also demonstrate a non-negligible effect of the fluorescent moiety on membrane structural alteration.
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Affiliation(s)
- Hiroki Ida
- The Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai, Miyagi 980-8578, Japan.,Precursory Research for Embryonic Science and Technology, Science and Technology Agency (JST), Saitama 332-0012, Japan.,Advanced Institute for Materials Research, Tohoku University, Sendai, Miyagi 980-8577, Japan.,Graduate School of Environmental Studies, Tohoku University, Sendai, Miyagi 980-8579, Japan
| | - Yasufumi Takahashi
- Precursory Research for Embryonic Science and Technology, Science and Technology Agency (JST), Saitama 332-0012, Japan.,WPI Nano Life Science Institute (WPI NanoLSI), Kanazawa University, Kanazawa, Ishikawa 920-1192, Japan
| | - Akichika Kumatani
- Advanced Institute for Materials Research, Tohoku University, Sendai, Miyagi 980-8577, Japan.,Graduate School of Environmental Studies, Tohoku University, Sendai, Miyagi 980-8579, Japan.,International Center for Materials Nanoarchitectonics, National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0044, Japan.,Center for Science and Innovation in Spintronics (CSIS), Tohoku University, Sendai, Miyagi 980-8577 Japan
| | - Hitoshi Shiku
- Graduate School of Environmental Studies, Tohoku University, Sendai, Miyagi 980-8579, Japan
| | - Tomo Murayama
- Institute for Chemical Research, Kyoto University, Kyoto 611-0011, Japan
| | - Hisaaki Hirose
- Institute for Chemical Research, Kyoto University, Kyoto 611-0011, Japan
| | - Shiroh Futaki
- Institute for Chemical Research, Kyoto University, Kyoto 611-0011, Japan
| | - Tomokazu Matsue
- Graduate School of Environmental Studies, Tohoku University, Sendai, Miyagi 980-8579, Japan
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27
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Dixit UG, Rodríguez NE, Polando R, McDowell MA, Wilson ME. Complement receptor 3 mediates ruffle-like, actin-rich aggregates during phagocytosis of Leishmania infantum metacyclics. Exp Parasitol 2021; 220:107968. [PMID: 32781093 PMCID: PMC7750307 DOI: 10.1016/j.exppara.2020.107968] [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: 06/03/2020] [Revised: 08/05/2020] [Accepted: 08/05/2020] [Indexed: 11/18/2022]
Abstract
The parasitic protozoan Leishmania infantum resides primarily in macrophages throughout mammalian infection. Infection is initiated by deposition of the metacyclic promastigote into the dermis of a mammalian host by the sand fly vector. Promastigotes enter macrophages by ligating surface receptors such as complement receptor 3 (CR3), inducing phagocytosis of the parasite. At the binding site of metacyclic promastigotes, we observed large asymmetrical aggregates of macrophage membrane with underlying actin, resembling membrane ruffles. Actin accumulation was observed at the point of initial contact, before phagosome formation and accumulation of peri-phagosomal actin. Ruffle-like structures did not form during phagocytosis of attenuated promastigotes or during phagocytosis of the intracellular amastigote form of L. infantum. Entry of promastigotes through massive actin accumulation was associated with a subsequent delay in fusion of the parasitophorous vacuole (PV) with the lysosomal markers LAMP-1 and Cathepsin D. Actin accumulation was also associated with entry through CR3, since macrophages from CD11b knockout (KO) mice did not form massive aggregates of actin during phagocytosis of metacyclic promastigotes. Furthermore, intracellular survival of L. infantum was significantly decreased in CD11b KO compared to wild type macrophages, although entry rates were similar. We conclude that both promastigote virulence and host cell CR3 are needed for the formation of ruffle-like membrane structures at the site of metacyclic promastigote phagocytosis, and that formation of actin-rich aggregates during entry correlates with the intracellular survival of virulent promastigotes.
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Affiliation(s)
- Upasna Gaur Dixit
- Department of Internal Medicine, University of Iowa, Iowa City, IA, 52242, USA
| | - Nilda E Rodríguez
- Department of Biology, University of Northern Iowa, Cedar Falls, IA, 50614, USA.
| | - Rachel Polando
- Department of Biological Sciences, Eck Institute for Global Health, University of Notre Dame, Notre Dame, IN, 46556, USA
| | - Mary Ann McDowell
- Department of Biological Sciences, Eck Institute for Global Health, University of Notre Dame, Notre Dame, IN, 46556, USA
| | - Mary E Wilson
- Department of Internal Medicine, University of Iowa, Iowa City, IA, 52242, USA; Department of Microbiology and Immunology, University of Iowa, Iowa City, IA, 52242, USA; Veterans' Affairs Medical Center, Iowa City, IA, 52242, USA
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28
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Manzanares D, Pérez-Carrión MD, Jiménez Blanco JL, Ortiz Mellet C, García Fernández JM, Ceña V. Cyclodextrin-Based Nanostructure Efficiently Delivers siRNA to Glioblastoma Cells Preferentially via Macropinocytosis. Int J Mol Sci 2020; 21:ijms21239306. [PMID: 33291321 PMCID: PMC7731237 DOI: 10.3390/ijms21239306] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 11/30/2020] [Accepted: 12/03/2020] [Indexed: 12/25/2022] Open
Abstract
Small interfering ribonucleic acid (siRNA) has the potential to revolutionize therapeutics since it can knockdown very efficiently the target protein. It is starting to be widely used to interfere with cell infection by HIV. However, naked siRNAs are unable to get into the cell, requiring the use of carriers to protect them from degradation and transporting them across the cell membrane. There is no information about which is the most efficient endocytosis route for high siRNA transfection efficiency. One of the most promising carriers to efficiently deliver siRNA are cyclodextrin derivatives. We have used nanocomplexes composed of siRNA and a β-cyclodextrin derivative, AMC6, with a very high transfection efficiency to selectively knockdown clathrin heavy chain, caveolin 1, and p21 Activated Kinase 1 to specifically block clathrin-mediated, caveolin-mediated and macropinocytosis endocytic pathways. The main objective was to identify whether there is a preferential endocytic pathway associated with high siRNA transfection efficiency. We have found that macropinocytosis is the preferential entry pathway for the nanoparticle and its associated siRNA cargo. However, blockade of macropinocytosis does not affect AMC6-mediated transfection efficiency, suggesting that macropinocytosis blockade can be functionally compensated by an increase in clathrin- and caveolin-mediated endocytosis.
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Affiliation(s)
- Darío Manzanares
- Unidad Asociada Neurodeath, Universidad de Castilla-La Mancha, 02006 Albacete, Spain; (D.M.); (M.D.P.-C.)
- CIBERNED, Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - María Dolores Pérez-Carrión
- Unidad Asociada Neurodeath, Universidad de Castilla-La Mancha, 02006 Albacete, Spain; (D.M.); (M.D.P.-C.)
- CIBERNED, Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - José Luis Jiménez Blanco
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, 41012 Sevilla, Spain; (J.L.J.B.); (C.O.M.)
| | - Carmen Ortiz Mellet
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, 41012 Sevilla, Spain; (J.L.J.B.); (C.O.M.)
| | - José Manuel García Fernández
- Instituto de Investigaciones Químicas (IIQ), Consejo Superior de Investigaciones Científicas-Universidad de Sevilla, 41092 Sevilla, Spain,
| | - Valentín Ceña
- Unidad Asociada Neurodeath, Universidad de Castilla-La Mancha, 02006 Albacete, Spain; (D.M.); (M.D.P.-C.)
- CIBERNED, Instituto de Salud Carlos III, 28029 Madrid, Spain
- Correspondence:
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29
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Ramaian Santhaseela A, Jayavelu T. Does mTORC1 inhibit autophagy at dual stages?: A possible role of mTORC1 in late-stage autophagy inhibition in addition to its known early-stage autophagy inhibition. Bioessays 2020; 43:e2000187. [PMID: 33165974 DOI: 10.1002/bies.202000187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 10/13/2020] [Accepted: 10/13/2020] [Indexed: 11/09/2022]
Abstract
Extensive studies have attributed the lysosomal localization of the mechanistic target of rapamycin complex 1 (mTORC1) during its activation. However, the exact biological significance of this lysosomal localization of mTORC1 remains ill-defined. Interestingly, findings have shown that localization of the lysosome itself is altered under conditions influencing mTORC1 activity. In this perspective, we hypothesize that the localization of mTORC1 and lysosome could be interconnected in a way that manifests regulation of autophagy that is already under progression at the time of mTORC1 activation. This provides a new possibility for autophagy regulation whose complete mechanistic insights remain to be determined.
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30
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Albrecht LV, Tejeda-Muñoz N, Bui MH, Cicchetto AC, Di Biagio D, Colozza G, Schmid E, Piccolo S, Christofk HR, De Robertis EM. GSK3 Inhibits Macropinocytosis and Lysosomal Activity through the Wnt Destruction Complex Machinery. Cell Rep 2020; 32:107973. [PMID: 32726636 PMCID: PMC7666578 DOI: 10.1016/j.celrep.2020.107973] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 05/29/2020] [Accepted: 07/08/2020] [Indexed: 12/17/2022] Open
Abstract
Canonical Wnt signaling is emerging as a major regulator of endocytosis. Here, we report that Wnt-induced macropinocytosis is regulated through glycogen synthase kinase 3 (GSK3) and the β-catenin destruction complex. We find that mutation of Axin1, a tumor suppressor and component of the destruction complex, results in the activation of macropinocytosis. Surprisingly, inhibition of GSK3 by lithium chloride (LiCl), CHIR99021, or dominant-negative GSK3 triggers macropinocytosis. GSK3 inhibition causes a rapid increase in acidic endolysosomes that is independent of new protein synthesis. GSK3 inhibition or Axin1 mutation increases lysosomal activity, which can be followed with tracers of active cathepsin D, β-glucosidase, and ovalbumin degradation. Microinjection of LiCl into the blastula cavity of Xenopus embryos causes a striking increase in dextran macropinocytosis. The effects of GSK3 inhibition on protein degradation in endolysosomes are blocked by the macropinocytosis inhibitors EIPA or IPA-3, suggesting that increases in membrane trafficking drive lysosomal activity.
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Affiliation(s)
- Lauren V Albrecht
- Department of Biological Chemistry, David Geffen School of Medicine, University of California, Los Angeles, CA 90095-1662, USA
| | - Nydia Tejeda-Muñoz
- Department of Biological Chemistry, David Geffen School of Medicine, University of California, Los Angeles, CA 90095-1662, USA
| | - Maggie H Bui
- Department of Biological Chemistry, David Geffen School of Medicine, University of California, Los Angeles, CA 90095-1662, USA
| | - Andrew C Cicchetto
- Department of Biological Chemistry, David Geffen School of Medicine, University of California, Los Angeles, CA 90095-1662, USA
| | - Daniele Di Biagio
- Department of Molecular Medicine, University of Padua School of Medicine, viale Colombo 3, 35126 Padua, Italy
| | - Gabriele Colozza
- Department of Biological Chemistry, David Geffen School of Medicine, University of California, Los Angeles, CA 90095-1662, USA
| | - Ernst Schmid
- Department of Biological Chemistry, David Geffen School of Medicine, University of California, Los Angeles, CA 90095-1662, USA
| | - Stefano Piccolo
- Department of Molecular Medicine, University of Padua School of Medicine, viale Colombo 3, 35126 Padua, Italy
| | - Heather R Christofk
- Department of Biological Chemistry, David Geffen School of Medicine, University of California, Los Angeles, CA 90095-1662, USA
| | - Edward M De Robertis
- Department of Biological Chemistry, David Geffen School of Medicine, University of California, Los Angeles, CA 90095-1662, USA.
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31
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Kitamata M, Hotta M, Hamada‐Nakahara S, Suetsugu S. The membrane binding and deformation property of vaccinia virus K1 ankyrin repeat domain protein. Genes Cells 2020; 25:187-196. [DOI: 10.1111/gtc.12749] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 01/11/2020] [Accepted: 01/15/2020] [Indexed: 11/29/2022]
Affiliation(s)
- Manabu Kitamata
- Graduate School of Science and Technology Nara Institute of Science and Technology Ikoma Japan
| | - Mitsukuni Hotta
- Graduate School of Science and Technology Nara Institute of Science and Technology Ikoma Japan
| | | | - Shiro Suetsugu
- Graduate School of Science and Technology Nara Institute of Science and Technology Ikoma Japan
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32
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Swanson JA, King JS. The breadth of macropinocytosis research. Philos Trans R Soc Lond B Biol Sci 2019; 374:20180146. [PMID: 30967000 PMCID: PMC6304736 DOI: 10.1098/rstb.2018.0146] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/09/2018] [Indexed: 11/12/2022] Open
Affiliation(s)
- Joel A. Swanson
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI 48109-5620, USA
| | - Jason S. King
- Department of Biomedical Sciences, University of Sheffield, Sheffield S10 2TT, UK
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