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Huang M, Li Y, Li Y, Liu S. C-Terminal Binding Protein: Regulator between Viral Infection and Tumorigenesis. Viruses 2024; 16:988. [PMID: 38932279 PMCID: PMC11209466 DOI: 10.3390/v16060988] [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: 05/23/2024] [Revised: 06/16/2024] [Accepted: 06/18/2024] [Indexed: 06/28/2024] Open
Abstract
C-terminal binding protein (CtBP), a transcriptional co-repressor, significantly influences cellular signaling, impacting various biological processes including cell proliferation, differentiation, apoptosis, and immune responses. The CtBP family comprises two highly conserved proteins, CtBP1 and CtBP2, which have been shown to play critical roles in both tumorigenesis and the regulation of viral infections. Elevated CtBP expression is noted in various tumor tissues, promoting tumorigenesis, invasiveness, and metastasis through multiple pathways. Additionally, CtBP's role in viral infections varies, exhibiting differing or even opposing effects depending on the virus. This review synthesizes the advances in CtBP's function research in viral infections and virus-associated tumorigenesis, offering new insights into potential antiviral and anticancer strategies.
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Affiliation(s)
- Meihui Huang
- Xiangya School of Medicine, Central South University, Changsha 410013, China; (M.H.); (Y.L.); (Y.L.)
| | - Yucong Li
- Xiangya School of Medicine, Central South University, Changsha 410013, China; (M.H.); (Y.L.); (Y.L.)
| | - Yuxiao Li
- Xiangya School of Medicine, Central South University, Changsha 410013, China; (M.H.); (Y.L.); (Y.L.)
| | - Shuiping Liu
- Xiangya School of Medicine, Central South University, Changsha 410013, China; (M.H.); (Y.L.); (Y.L.)
- Department of Microbiology, School of Basic Medical Science, Central South University, Changsha 410013, China
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2
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Duran P, Yang BA, Plaster E, Eiken M, Loebel C, Aguilar CA. Tracking of Nascent Matrix Deposition during Muscle Stem Cell Activation across Lifespan Using Engineered Hydrogels. Adv Biol (Weinh) 2024; 8:e2400091. [PMID: 38616175 DOI: 10.1002/adbi.202400091] [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: 02/18/2024] [Revised: 03/22/2024] [Indexed: 04/16/2024]
Abstract
Adult stem cells occupy a niche that contributes to their function, but how stem cells rebuild their microenvironment after injury remains an open-ended question. Herein, biomaterial-based systems and metabolic labeling are utilized to evaluate how skeletal muscle stem cells deposit extracellular matrix. Muscle stem cells and committed myoblasts are observed to generate less nascent matrix than muscle resident fibro-adipogenic progenitors. When cultured on substrates that matched the stiffness of physiological uninjured and injured muscles, muscle stem cells increased nascent matrix deposition with activation kinetics. Reducing the ability to deposit nascent matrix by an inhibitor of vesicle trafficking (Exo-1) attenuated muscle stem cell function and mimicked impairments observed from muscle stem cells isolated from old muscles. Old muscle stem cells are observed to deposit less nascent matrix than young muscle stem cells, which is rescued with therapeutic supplementation of insulin-like growth factors. These results highlight the role of nascent matrix production with muscle stem cell activation.
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Affiliation(s)
- Pamela Duran
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
- BioInterfaces Institute, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Benjamin A Yang
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
- BioInterfaces Institute, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Eleanor Plaster
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Madeline Eiken
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Claudia Loebel
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
- Department of Materials Science & Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Carlos A Aguilar
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
- BioInterfaces Institute, University of Michigan, Ann Arbor, MI, 48109, USA
- Program in Cellular and Molecular Biology, University of Michigan, Ann Arbor, MI, 48109, USA
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3
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Guo J, Xu S, Majeed U, Ye J, Zhang H, Xue W, Luo Y. Size-Related Pathway Flux Analysis of Ultrasmall Iron Oxide Nanoparticles in Macrophage Cell RAW264.7 for Safety Evaluation. ACS OMEGA 2024; 9:3480-3490. [PMID: 38284085 PMCID: PMC10809237 DOI: 10.1021/acsomega.3c07081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 12/20/2023] [Accepted: 12/25/2023] [Indexed: 01/30/2024]
Abstract
The endocytosis, intracellular transport, and exocytosis of different-sized nanoparticles were reported to greatly affect their efficacy and biosafety. The quantitation of endocytosis and exocytosis as well as subcellular distribution of nanoparticles might be an effective approach based on transport pathway flux analysis. Thus, the key parameters that could present the effects of three different-sized ultrasmall iron oxide nanoparticles (USIONPs) were systematically investigated in RAW264.7 cells. The endocytosis and exocytosis of USIONPs were related to their sizes; 15.4 nm of S2 could be quickly and more internalized and excreted in comparison to S1 (7.8 nm) and S3 (30.7 nm). In RAW264.7 cells, USIONPs were observed in endosomes, lysosomes, the Golgi apparatus, and autophagosomes via a transmission electron microscope. Based on flux analysis of intracellular transport pathways of USIONPs, it was found that 43% of S1, 40% of S2, and 44% of S3 were individually transported extracellularly through the Golgi apparatus-involved middle-fast pathway, while 24% of S1, 23% of S2, and 26% of S3 were transported through the fast recycling endosomal pathway, and the residues were transported through the slower speed lysosomal pathway. USIONPs might be transported via size-related endocytosis and exocytosis pathways. The pathway flux could be calculated on the basis of disturbance analysis of special transporters as well as their coding genes. Because there were rate differences among these transport pathways, this pathway flux could anticipate the intracellular remaining time and distribution of different-sized nanoparticles, the function exertion, and side effects of nanomaterials. The size of the nanomaterials could be optimized for improving functions and safety.
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Affiliation(s)
- Jiaqing Guo
- School
of Chemical Engineering, Northwest University, Xi’an 710069, China
| | - Shixin Xu
- School
of Chemical Engineering, Northwest University, Xi’an 710069, China
| | - Usman Majeed
- College
of Food Science and Technology, Northwest
University, Xi’an 710069, China
| | - Jianming Ye
- College
of Food Science and Technology, Northwest
University, Xi’an 710069, China
| | - Huaxin Zhang
- School
of Chemical Engineering, Northwest University, Xi’an 710069, China
| | - Weiming Xue
- School
of Chemical Engineering, Northwest University, Xi’an 710069, China
| | - Yane Luo
- College
of Food Science and Technology, Northwest
University, Xi’an 710069, China
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4
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Duran P, Yang BA, Plaster E, Eiken M, Loebel C, Aguilar CA. Quantification of local matrix deposition during muscle stem cell activation using engineered hydrogels. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.20.576326. [PMID: 38328131 PMCID: PMC10849481 DOI: 10.1101/2024.01.20.576326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
Adult stem cells occupy a niche that contributes to their function, but how stem cells remodel their microenvironment remains an open-ended question. Herein, biomaterials-based systems and metabolic labeling were utilized to evaluate how skeletal muscle stem cells deposit extracellular matrix. Muscle stem cells and committed myoblasts were observed to generate less nascent matrix than muscle resident fibro-adipogenic progenitors. When cultured on substrates that matched the stiffness of physiological uninjured and injured muscles, the increased nascent matrix deposition was associated with stem cell activation. Reducing the ability to deposit nascent matrix in muscle stem cells attenuated function and mimicked impairments observed from muscle stem cells isolated from old aged muscles, which could be rescued with therapeutic supplementation of insulin-like growth factors. These results highlight how nascent matrix production is critical for maintaining healthy stem cell function.
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Affiliation(s)
- Pamela Duran
- Dept. of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
- BioInterfaces Institute, University of Michigan, Ann Arbor, MI 48109, USA
| | - Benjamin A. Yang
- Dept. of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
- BioInterfaces Institute, University of Michigan, Ann Arbor, MI 48109, USA
| | - Eleanor Plaster
- Dept. of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
| | - Madeline Eiken
- Dept. of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
| | - Claudia Loebel
- Dept. of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
- Dept. of Materials Science & Engineering, University of Michigan, Ann Arbor, MI 48109, USA
| | - Carlos A. Aguilar
- Dept. of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
- BioInterfaces Institute, University of Michigan, Ann Arbor, MI 48109, USA
- Program in Cellular and Molecular Biology, University of Michigan, Ann Arbor, MI 48109, USA
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5
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Sung Y, Gotina L, Kim KH, Lee JY, Shin S, Aziz H, Kang DM, Liu X, Hong NK, Lee HG, Lee JS, Ku H, Jeong C, Pae AN, Lim S, Chang YT, Kim YK. NeuM: A Neuron-Selective Probe Incorporates into Live Neuronal Membranes via Enhanced Clathrin-Mediated Endocytosis in Primary Neurons. Angew Chem Int Ed Engl 2024; 63:e202312942. [PMID: 38062619 DOI: 10.1002/anie.202312942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Indexed: 01/10/2024]
Abstract
The development of a small-molecule probe designed to selectively target neurons would enhance the exploration of intricate neuronal structures and functions. Among such probes, NeuO stands out as the pioneer and has gained significant traction in the field of research. Nevertheless, neither the mechanism behind neuron-selectivity nor the cellular localization has been determined. Here, we introduce NeuM, a derivative of NeuO, designed to target neuronal cell membranes. Furthermore, we elucidate the mechanism behind the selective neuronal membrane trafficking that distinguishes neurons. In an aqueous buffer, NeuM autonomously assembles into micellar structures, leading to the quenching of its fluorescence (Φ=0.001). Upon exposure to neurons, NeuM micelles were selectively internalized into neuronal endosomes via clathrin-mediated endocytosis. Through the endocytic recycling pathway, NeuM micelles integrate into neuronal membrane, dispersing fluorescent NeuM molecules in the membrane (Φ=0.61). Molecular dynamics simulations demonstrated that NeuM, in comparison to NeuO, possesses optimal lipophilicity and molecular length, facilitating its stable incorporation into phospholipid layers. The stable integration of NeuM within neuronal membrane allows the prolonged monitoring of neurons, as well as the visualization of intricate neuronal structures.
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Affiliation(s)
- Yoonsik Sung
- Center for Brain Disorders, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Lizaveta Gotina
- Center for Brain Disorders, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- Division of Bio-Medical Science & Technology, KIST School, Korea University of Science and Technology (UST), Seoul, 02792, Republic of Korea
| | - Kyu Hyeon Kim
- Center for Brain Disorders, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- Division of Bio-Medical Science & Technology, KIST School, Korea University of Science and Technology (UST), Seoul, 02792, Republic of Korea
| | - Jung Yeol Lee
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Seulgi Shin
- Center for Brain Disorders, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Hira Aziz
- Center for Brain Disorders, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- Division of Bio-Medical Science & Technology, KIST School, Korea University of Science and Technology (UST), Seoul, 02792, Republic of Korea
| | - Dong Min Kang
- Center for Brain Disorders, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- Department of Life Sciences, Korea University, Seoul, 02841, Republic of Korea
| | - Xiao Liu
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Na-Kyeong Hong
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Hong-Guen Lee
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Jun-Seok Lee
- Department of Pharmacology, Korea University College of Medicine, Seoul, 02841, Republic of Korea
| | - Hyeyeong Ku
- Chemical and Biological Integrative Research Center, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- KHU-KIST Department of Converging Science and Technology, Kyung Hee University, Seoul, 02447, Republic of Korea
| | - Cherlhyun Jeong
- Division of Bio-Medical Science & Technology, KIST School, Korea University of Science and Technology (UST), Seoul, 02792, Republic of Korea
- Chemical and Biological Integrative Research Center, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Ae Nim Pae
- Center for Brain Disorders, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- Division of Bio-Medical Science & Technology, KIST School, Korea University of Science and Technology (UST), Seoul, 02792, Republic of Korea
| | - Sungsu Lim
- Center for Brain Disorders, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Young-Tae Chang
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Yun Kyung Kim
- Center for Brain Disorders, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- Division of Bio-Medical Science & Technology, KIST School, Korea University of Science and Technology (UST), Seoul, 02792, Republic of Korea
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Cha J, Ding EA, Carvalho EM, Fowler A, Aghi MK, Kumar S. Glioma Cells Secrete Collagen VI to Facilitate Invasion. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.12.12.571198. [PMID: 38168332 PMCID: PMC10760023 DOI: 10.1101/2023.12.12.571198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
While glioblastoma (GBM) progression is associated with extensive extracellular matrix (ECM) secretion, the causal contributions of ECM secretion to invasion remain unclear. Here we investigate these contributions by combining engineered materials, proteomics, analysis of patient data, and a model of bevacizumab-resistant GBM. We find that GBM cells cultured in engineered 3D hyaluronic acid hydrogels secrete ECM prior to invasion, particularly in the absence of exogenous ECM ligands. Proteomic measurements reveal extensive secretion of collagen VI, and collagen VI-associated transcripts are correspondingly enriched in microvascular proliferation regions of human GBMs. We further show that bevacizumab-resistant GBM cells deposit more collagen VI than their responsive counterparts, which is associated with marked cell-ECM stiffening. COL6A3 deletion in GBM cells reduces invasion, β-catenin signaling, and expression of mesenchymal markers, and these effects are amplified in hypoxia. Our studies strongly implicate GBM cell-derived collagen VI in microenvironmental remodeling to facilitate invasion.
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Affiliation(s)
- Junghwa Cha
- Department of Bioengineering, University of California, Berkeley, CA 94720, USA
| | - Erika A Ding
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA 94720, USA
| | - Emily M Carvalho
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA 94720, USA
| | - Annabelle Fowler
- Department of Bioengineering, University of California, Berkeley, CA 94720, USA
| | - Manish K Aghi
- Department of Neurosurgery, University of California San Francisco, San Francisco, CA 94143, USA
| | - Sanjay Kumar
- Department of Bioengineering, University of California, Berkeley, CA 94720, USA
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA 94720, USA
- Department of Bioengineering and Therapeutic Sciences University of California San Francisco, CA 94158, USA
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7
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Gutay-Tóth Z, Gellen G, Doan M, Eliason JF, Vincze J, Szente L, Fenyvesi F, Goda K, Vecsernyés M, Szabó G, Bacso Z. Cholesterol-Depletion-Induced Membrane Repair Carries a Raft Conformer of P-Glycoprotein to the Cell Surface, Indicating Enhanced Cholesterol Trafficking in MDR Cells, Which Makes Them Resistant to Cholesterol Modifications. Int J Mol Sci 2023; 24:12335. [PMID: 37569709 PMCID: PMC10419235 DOI: 10.3390/ijms241512335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 07/26/2023] [Accepted: 07/31/2023] [Indexed: 08/13/2023] Open
Abstract
The human P-glycoprotein (P-gp), a transporter responsible for multidrug resistance, is present in the plasma membrane's raft and non-raft domains. One specific conformation of P-gp that binds to the monoclonal antibody UIC2 is primarily associated with raft domains and displays heightened internalization in cells overexpressing P-gp, such as in NIH-3T3 MDR1 cells. Our primary objective was to investigate whether the trafficking of this particular P-gp conformer is dependent on cholesterol levels. Surprisingly, depleting cholesterol using cyclodextrin resulted in an unexpected increase in the proportion of raft-associated P-gp within the cell membrane, as determined by UIC2-reactive P-gp. This increase appears to be a compensatory response to cholesterol loss from the plasma membrane, whereby cholesterol-rich raft micro-domains are delivered to the cell surface through an augmented exocytosis process. Furthermore, this exocytotic event is found to be part of a complex trafficking mechanism involving lysosomal exocytosis, which contributes to membrane repair after cholesterol reduction induced by cyclodextrin treatment. Notably, cells overexpressing P-gp demonstrated higher total cellular cholesterol levels, an increased abundance of stable lysosomes, and more effective membrane repair following cholesterol modifications. These modifications encompassed exocytotic events that involved the transport of P-gp-carrying rafts. Importantly, the enhanced membrane repair capability resulted in a durable phenotype for MDR1 expressing cells, as evidenced by significantly improved viabilities of multidrug-resistant Pgp-overexpressing immortal NIH-3T3 MDR1 and MDCK-MDR1 cells compared to their parents when subjected to cholesterol alterations.
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Affiliation(s)
- Zsuzsanna Gutay-Tóth
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary; (Z.G.-T.); (G.G.); (M.D.); (K.G.); (G.S.)
- Doctoral School of Molecular Cell and Immune Biology, University of Debrecen, 4032 Debrecen, Hungary
| | - Gabriella Gellen
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary; (Z.G.-T.); (G.G.); (M.D.); (K.G.); (G.S.)
- Doctoral School of Molecular Cell and Immune Biology, University of Debrecen, 4032 Debrecen, Hungary
- MTA-ELTE Lendület Ion Mobility Mass Spectrometry Research Group, Department of Analytical Chemistry, Institute of Chemistry, ELTE Eötvös Loránd University, 1053 Budapest, Hungary
| | - Minh Doan
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary; (Z.G.-T.); (G.G.); (M.D.); (K.G.); (G.S.)
| | - James F. Eliason
- Great Lakes Stem Cell Innovation Center, Detroit, MI 48202, USA;
| | - János Vincze
- Department of Physiology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary;
| | - Lajos Szente
- CycloLab Cyclodextrin Research & Development Laboratory, Ltd., 1097 Budapest, Hungary;
| | - Ferenc Fenyvesi
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, 4032 Debrecen, Hungary; (F.F.); (M.V.)
| | - Katalin Goda
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary; (Z.G.-T.); (G.G.); (M.D.); (K.G.); (G.S.)
| | - Miklós Vecsernyés
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, 4032 Debrecen, Hungary; (F.F.); (M.V.)
| | - Gábor Szabó
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary; (Z.G.-T.); (G.G.); (M.D.); (K.G.); (G.S.)
| | - Zsolt Bacso
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary; (Z.G.-T.); (G.G.); (M.D.); (K.G.); (G.S.)
- Doctoral School of Molecular Cell and Immune Biology, University of Debrecen, 4032 Debrecen, Hungary
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, 4032 Debrecen, Hungary; (F.F.); (M.V.)
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Liu L, Bulla LA. Cell death signaling in Anopheles gambiae initiated by Bacillus thuringiensis Cry4B toxin involves Na +/K + ATPase. Exp Biol Med (Maywood) 2023; 248:1191-1205. [PMID: 37642306 PMCID: PMC10621475 DOI: 10.1177/15353702231188072] [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: 05/01/2023] [Accepted: 06/10/2023] [Indexed: 08/31/2023] Open
Abstract
Identifying the mechanisms by which bacterial pathogens kill host cells is fundamental to understanding how to control and prevent human and animal disease. In the case of Bacillus thuringiensis (Bt), such knowledge is critical to using the bacterium to kill insect vectors that transmit human and animal disease. For the Cry4B toxin produced by Bt, its capacity to kill Anopheles gambiae, the primary mosquito vector of malaria, is the consequence of a variety of signaling activities. We show here that Cry4B, acting as first messenger, binds specifically to the bitopic cadherin BT-R3 G-protein-coupled receptor (GPCR) localized in the midgut of A. gambiae, activating the downstream second messenger cyclic adenosine monophosphate (cAMP). The direct result of the Cry4B-BT-R3 binding is the release of αs from the heterotrimeric αβγ-G-protein complex and its activation of adenylyl cyclase (AC). The upshot is an increased level of cAMP, which activates protein kinase A (PKA). The functional impact of cAMP-PKA signaling is the stimulation of Na+/K+-ATPase (NKA) which serves as an Na+/K+ pump to maintain proper gradients of extracellular Na+ and intracellular K+. Increased level of cAMP amplifies NKA and upsets normal ion concentration gradients. NKA, as a scaffolding protein, accelerates the first messenger signal to the nucleus, generating additional BT-R3 molecules and promoting their exocytotic trafficking to the cell membrane. Accumulation of BT-R3 on the cell surface facilitates recruitment of additional toxin molecules which, in turn, amplify the original signal in a cascade-like manner. This report provides the first evidence of a bacterial toxin using NKA via AC/PKA signaling to execute cell death.
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Affiliation(s)
- Li Liu
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, TX 75080-3021 USA
| | - Lee A Bulla
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, TX 75080-3021 USA
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9
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Hong Y, Walling BL, Kim HR, Serratelli WS, Lozada JR, Sailer CJ, Amitrano AM, Lim K, Mongre RK, Kim KD, Capece T, Lomakina EB, Reilly NS, Vo K, Gerber SA, Fan TC, Yu ALT, Oakes PW, Waugh RE, Jun CD, Reagan PM, Kim M. ST3GAL1 and βII-spectrin pathways control CAR T cell migration to target tumors. Nat Immunol 2023; 24:1007-1019. [PMID: 37069398 PMCID: PMC10515092 DOI: 10.1038/s41590-023-01498-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 03/21/2023] [Indexed: 04/19/2023]
Abstract
Adoptive transfer of genetically engineered chimeric antigen receptor (CAR) T cells is becoming a promising treatment option for hematological malignancies. However, T cell immunotherapies have mostly failed in individuals with solid tumors. Here, with a CRISPR-Cas9 pooled library, we performed an in vivo targeted loss-of-function screen and identified ST3 β-galactoside α-2,3-sialyltransferase 1 (ST3GAL1) as a negative regulator of the cancer-specific migration of CAR T cells. Analysis of glycosylated proteins revealed that CD18 is a major effector of ST3GAL1 in activated CD8+ T cells. ST3GAL1-mediated glycosylation induces the spontaneous nonspecific tissue sequestration of T cells by altering lymphocyte function-associated antigen-1 (LFA-1) endocytic recycling. Engineered CAR T cells with enhanced expression of βII-spectrin, a central LFA-1-associated cytoskeleton molecule, reversed ST3GAL1-mediated nonspecific T cell migration and reduced tumor growth in mice by improving tumor-specific homing of CAR T cells. These findings identify the ST3GAL1-βII-spectrin axis as a major cell-intrinsic program for cancer-targeting CAR T cell migration and as a promising strategy for effective T cell immunotherapy.
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Affiliation(s)
- Yeonsun Hong
- Department of Microbiology and Immunology, David H. Smith Center for Vaccine Biology and Immunology, University of Rochester, Rochester, NY, USA
| | - Brandon L Walling
- Department of Microbiology and Immunology, David H. Smith Center for Vaccine Biology and Immunology, University of Rochester, Rochester, NY, USA
| | - Hye-Ran Kim
- Department of Microbiology and Immunology, David H. Smith Center for Vaccine Biology and Immunology, University of Rochester, Rochester, NY, USA
| | - William S Serratelli
- Department of Microbiology and Immunology, David H. Smith Center for Vaccine Biology and Immunology, University of Rochester, Rochester, NY, USA
| | - John R Lozada
- Department of Microbiology and Immunology, David H. Smith Center for Vaccine Biology and Immunology, University of Rochester, Rochester, NY, USA
| | - Cooper J Sailer
- Department of Microbiology and Immunology, David H. Smith Center for Vaccine Biology and Immunology, University of Rochester, Rochester, NY, USA
- Department of Pathology, University of Rochester Medical Center, Rochester, NY, USA
| | - Andrea M Amitrano
- Department of Microbiology and Immunology, David H. Smith Center for Vaccine Biology and Immunology, University of Rochester, Rochester, NY, USA
- Department of Pathology, University of Rochester Medical Center, Rochester, NY, USA
| | - Kihong Lim
- Department of Microbiology and Immunology, David H. Smith Center for Vaccine Biology and Immunology, University of Rochester, Rochester, NY, USA
| | - Raj Kumar Mongre
- Department of Microbiology and Immunology, David H. Smith Center for Vaccine Biology and Immunology, University of Rochester, Rochester, NY, USA
| | - Kyun-Do Kim
- Department of Convergent Research of Emerging Virus Infection, Korea Research Institute of Chemical Technology, Daejeon, Korea
| | - Tara Capece
- Department of Microbiology and Immunology, David H. Smith Center for Vaccine Biology and Immunology, University of Rochester, Rochester, NY, USA
| | - Elena B Lomakina
- Department of Biomedical Engineering, University of Rochester Medical Center, Rochester, NY, USA
| | - Nicholas S Reilly
- Department of Physics and Astronomy, University of Rochester, Rochester, NY, USA
| | - Kevin Vo
- Department of Microbiology and Immunology, David H. Smith Center for Vaccine Biology and Immunology, University of Rochester, Rochester, NY, USA
| | - Scott A Gerber
- Department of Surgery, University of Rochester, Rochester, NY, USA
| | - Tan-Chi Fan
- Institute of Stem Cell and Translational Cancer Research, Chang Gung Memorial Hospital at Linkou and Chang Gung University, Taoyuan, Taiwan
| | - Alice Lin-Tsing Yu
- Department of Pediatrics/Hematology Oncology, University of California in San Diego, San Diego, CA, USA
| | - Patrick W Oakes
- Department of Physics and Astronomy, University of Rochester, Rochester, NY, USA
| | - Richard E Waugh
- Department of Biomedical Engineering, University of Rochester Medical Center, Rochester, NY, USA
| | - Chang-Duk Jun
- School of Life Sciences, Gwangju Institute of Science and Technology (GIST), Gwangju, Korea
| | - Patrick M Reagan
- Wilmot Cancer Institute, University of Rochester Medical Center, Rochester, NY, USA
| | - Minsoo Kim
- Department of Microbiology and Immunology, David H. Smith Center for Vaccine Biology and Immunology, University of Rochester, Rochester, NY, USA.
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10
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Haan KD, Park SJ, Nakamura Y, Fukami K, Fisher TE. Osmotically evoked PLCδ1-dependent translocation of ΔN-TRPV1 channels in rat supraoptic neurons. iScience 2023; 26:106258. [PMID: 36926650 PMCID: PMC10011827 DOI: 10.1016/j.isci.2023.106258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 11/10/2022] [Accepted: 02/17/2023] [Indexed: 02/22/2023] Open
Abstract
Osmoregulation is an essential homeostatic process that requires constant release of vasopressin during sustained increases in plasma osmolality. The magnocellular neurosecretory cells (MNCs) respond to increases in external osmolality through increases in the activity of ΔN-TRPV1 channels, which leads to increased action potential firing and vasopressin release. We show that sustained exposure of acutely isolated rat and mouse MNCs to hypertonic solutions (90 min) causes a reversible translocation of ΔN-TRPV1 channels from internal stores to the plasma membrane that depends on the activation of phospholipase C and on SNARE-dependent exocytosis. ΔN-TRPV1 channel translocation is absent in MNCs isolated from transgenic mice lacking the PLCδ1 isoform, suggesting that PLCδ1 is essential for triggering this process. The translocation of ΔN-TRPV1 channels to the cell surface could contribute to the maintenance of MNC excitability during sustained increases in osmolality. Our data therefore have important implications for the mechanisms underlying mammalian osmoregulation.
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Affiliation(s)
- Kirk D Haan
- Department of Anatomy, Physiology, and Pharmacology, College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada
| | - Sung Jin Park
- Department of Anatomy, Physiology, and Pharmacology, College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada
| | - Yoshikazu Nakamura
- Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, Noda, Chiba, Japan
| | - Kiyoko Fukami
- Laboratory of Genome and Biosignals, School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan
| | - Thomas E Fisher
- Department of Anatomy, Physiology, and Pharmacology, College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada
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11
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He SW, Liang YL, Zhang Y, Liu X, Gong S, Ye ML, Huang SY, Tan XR, Zhou SQ, Zhao Y, Liu N, Li YQ. LINC00173 facilitates tumor progression by stimulating RAB1B-mediated PA2G4 and SDF4 secretion in nasopharyngeal carcinoma. Mol Oncol 2023; 17:518-533. [PMID: 36606322 PMCID: PMC9980309 DOI: 10.1002/1878-0261.13375] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 12/12/2022] [Accepted: 01/05/2023] [Indexed: 01/07/2023] Open
Abstract
An increasing number of studies have found that long non-coding RNA (lncRNA) play important roles in driving the progression of nasopharyngeal carcinoma (NPC). Our microarray screening revealed that expression of the lncRNA long intergenic non-protein coding RNA 173 (LINC00173) was upregulated in NPC. However, its role and mechanism in NPC have not yet been elucidated. In this study, we demonstrate that high LINC00173 expression indicated a poor prognosis in NPC patients. Knockdown of LINC00173 significantly inhibited NPC cell proliferation, migration and invasion in vitro. Mechanistically, LINC00173 interacted and colocalized with Ras-related protein Rab-1B (RAB1B) in the cytoplasm, but the modulation of LINC00173 expression did not affect the expression of RAB1B at either the mRNA or protein levels. Instead, relying on the stimulation of RAB1B, LINC00173 could facilitate the extracellular secretion of proliferation-associated 2G4 (PA2G4) and stromal cell-derived factor 4 (SDF4; also known as 45-kDa calcium-binding protein) proteins, and knockdown of these proteins could reverse the NPC aggressive phenotype induced by LINC00173 overexpression. Moreover, in vivo LINC00173-knockdown models exhibited a marked slowdown in tumor growth and a significant reduction in lymph node and lung metastases. In summary, LINC00173 serves as a crucial driver for NPC progression, and the LINC00173-RAB1B-PA2G4/SDF4 axis might provide a potential therapeutic target for NPC patients.
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Affiliation(s)
- Shi-Wei He
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Ye-Lin Liang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Yuan Zhang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Xu Liu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Sha Gong
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Ming-Liang Ye
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Sheng-Yan Huang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Xi-Rong Tan
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Shi-Qing Zhou
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Yin Zhao
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Na Liu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Ying-Qing Li
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
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12
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Dendrimer nanosystems for adaptive tumor-assisted drug delivery via extracellular vesicle hijacking. Proc Natl Acad Sci U S A 2023; 120:e2215308120. [PMID: 36745793 PMCID: PMC9963653 DOI: 10.1073/pnas.2215308120] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Drug delivery systems (DDSs) that can overcome tumor heterogeneity and achieve deep tumor penetration are challenging to develop yet in high demand for cancer treatment. We report here a DDS based on self-assembling dendrimer nanomicelles for effective and deep tumor penetration via in situ tumor-secreted extracellular vesicles (EVs), an endogenous transport system that evolves with tumor microenvironment. Upon arrival at a tumor, these dendrimer nanomicelles had their payload repackaged by the cells into EVs, which were further transported and internalized by other cells for delivery "in relay." Using pancreatic and colorectal cancer-derived 2D, 3D, and xenograft models, we demonstrated that the in situ-generated EVs mediated intercellular delivery, propagating cargo from cell to cell and deep within the tumor. Our study provides a new perspective on exploiting the intrinsic features of tumors alongside dendrimer supramolecular chemistry to develop smart and effective DDSs to overcome tumor heterogeneity and their evolutive nature thereby improving cancer therapy.
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13
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Cereijido M, Jimenez L, Hinojosa L, Castillo A, Martínez-Rendon J, Ponce A. Ouabain-Induced Changes in the Expression of Voltage-Gated Potassium Channels in Epithelial Cells Depend on Cell-Cell Contacts. Int J Mol Sci 2022; 23:13257. [PMID: 36362049 PMCID: PMC9655981 DOI: 10.3390/ijms232113257] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 10/21/2022] [Accepted: 10/23/2022] [Indexed: 12/25/2023] Open
Abstract
Ouabain is a cardiac glycoside, initially isolated from plants, and currently thought to be a hormone since some mammals synthesize it endogenously. It has been shown that in epithelial cells, it induces changes in properties and components related to apical-basolateral polarity and cell-cell contacts. In this work, we used a whole-cell patch clamp to test whether ouabain affects the properties of the voltage-gated potassium currents (Ik) of epithelial cells (MDCK). We found that: (1) in cells arranged as mature monolayers, ouabain induced changes in the properties of Ik; (2) it also accelerated the recovery of Ik in cells previously trypsinized and re-seeded at confluence; (3) in cell-cell contact-lacking cells, ouabain did not produce a significant change; (4) Na+/K+ ATPase might be the receptor that mediates the effect of ouabain on Ik; (5) the ouabain-induced changes in Ik required the synthesis of new nucleotides and proteins, as well as Golgi processing and exocytosis, as evidenced by treatment with drugs inhibiting those processes; and (5) the signaling cascade included the participation of cSrC, PI3K, Erk1/2, NF-κB and β-catenin. These results reveal a new role for ouabain as a modulator of the expression of voltage-gated potassium channels, which require cells to be in contact with themselves.
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Affiliation(s)
- Marcelino Cereijido
- Department of Physiology, Biophysics and Neurosciences, CINVESTAV-IPN, CDMX 07360, Mexico
| | - Lidia Jimenez
- Department of Physiology, Biophysics and Neurosciences, CINVESTAV-IPN, CDMX 07360, Mexico
| | - Lorena Hinojosa
- Department of Physiology, Biophysics and Neurosciences, CINVESTAV-IPN, CDMX 07360, Mexico
| | - Aida Castillo
- Department of Physiology, Biophysics and Neurosciences, CINVESTAV-IPN, CDMX 07360, Mexico
| | - Jacqueline Martínez-Rendon
- Department of Physiology, Biophysics and Neurosciences, CINVESTAV-IPN, CDMX 07360, Mexico
- Molecular Medicine Laboratory, Unidad Academica de Medicina Humana y C.S, Campus UAZ Siglo XXI-L1, Universidad Autónoma de Zacatecas, Zacatecas 98160, Mexico
| | - Arturo Ponce
- Department of Physiology, Biophysics and Neurosciences, CINVESTAV-IPN, CDMX 07360, Mexico
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14
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Tang X, Du X, Yu Y, Qin M, Qian L, Zhang M, Yang Y, Yu Q, Gan Z. Deep-Penetrating Triple-Responsive Prodrug Nanosensitizer Actuates Efficient Chemoradiotherapy in Pancreatic Ductal Adenocarcinoma Models. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2202834. [PMID: 35808966 DOI: 10.1002/smll.202202834] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Revised: 06/24/2022] [Indexed: 06/15/2023]
Abstract
Chemoradiotherapy (CRT) is the most accepted treatment for locally advanced pancreatic ductal adenocarcinoma (PDAC) and can significantly improve the R0 resection rate. However, there are few long-term survivors after CRT. Although some polymer nanoparticles have shown potential in alleviating the dose-limiting toxicity and assisting the chemotherapy of PDAC, there are few efficient nanosensitizers (NS) available for CRT of this malignancy, especially in the context of its hypoxic nature. Herein, based on the biological features of PDAC, a γ-glutamyl transpeptidase (GGT)/glutathione (GSH)/hypoxia triple-responsive prodrug NS to overcome the biological barrier and microenvironmental limitations confronted by CRT in PDAC is developed. Due to triple-responsiveness, deep tumor penetration, GSH/hypoxia-responsive drug release/activation, and hypoxia-induced chemoradio-sensitization can be simultaneously achieved with this NS. As a result, tumor shrinkage after CRT with this NS can be observed in both subcutaneous and orthotopic PDAC models, foreshadowing its potential in clinical neoadjuvant CRT.
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Affiliation(s)
- Xiaohu Tang
- Beijing Laboratory of Biomedical Materials, The State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Xiaomeng Du
- Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, 100026, P. R. China
| | - Yanting Yu
- Beijing Laboratory of Biomedical Materials, The State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Meng Qin
- Beijing Laboratory of Biomedical Materials, The State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Lili Qian
- Beijing Laboratory of Biomedical Materials, The State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Meng Zhang
- Beijing Laboratory of Biomedical Materials, The State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Yan Yang
- Beijing Laboratory of Biomedical Materials, The State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Qingsong Yu
- Beijing Laboratory of Biomedical Materials, The State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Zhihua Gan
- Beijing Laboratory of Biomedical Materials, The State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
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15
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Baek J, Lopez PA, Lee S, Kim TS, Kumar S, Schaffer DV. Egr1 is a 3D matrix-specific mediator of mechanosensitive stem cell lineage commitment. SCIENCE ADVANCES 2022; 8:eabm4646. [PMID: 35427160 PMCID: PMC9012469 DOI: 10.1126/sciadv.abm4646] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 02/28/2022] [Indexed: 05/31/2023]
Abstract
While extracellular matrix (ECM) mechanics strongly regulate stem cell commitment, the field's mechanistic understanding of this phenomenon largely derives from simplified two-dimensional (2D) culture substrates. Here, we found a 3D matrix-specific mechanoresponsive mechanism for neural stem cell (NSC) differentiation. NSC lineage commitment in 3D is maximally stiffness sensitive in the range of 0.1 to 1.2 kPa, a narrower and more brain-mimetic range than we had previously identified in 2D (0.75 to 75 kPa). Transcriptomics revealed stiffness-dependent up-regulation of early growth response 1 (Egr1) in 3D but not in 2D. Egr1 knockdown enhanced neurogenesis in stiff ECMs by driving β-catenin nuclear localization and activity in 3D, but not in 2D. Mechanical modeling and experimental studies under osmotic pressure indicate that stiff 3D ECMs are likely to stimulate Egr1 via increases in confining stress during cell volumetric growth. To our knowledge, Egr1 represents the first 3D-specific stem cell mechanoregulatory factor.
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Affiliation(s)
- Jieung Baek
- Department of Bioengineering, University of California, Berkeley, Berkeley, CA 94720, USA
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Paola A. Lopez
- Department of Bioengineering, University of California, Berkeley, Berkeley, CA 94720, USA
- UC Berkeley–UC San Francisco Graduate Program in Bioengineering, Berkeley, CA 94720, USA
| | - Sangmin Lee
- Department of Mechanical Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Taek-Soo Kim
- Department of Mechanical Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Sanjay Kumar
- Department of Bioengineering, University of California, Berkeley, Berkeley, CA 94720, USA
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, CA 94720, USA
- UC Berkeley–UC San Francisco Graduate Program in Bioengineering, Berkeley, CA 94720, USA
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA 94158, USA
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - David V. Schaffer
- Department of Bioengineering, University of California, Berkeley, Berkeley, CA 94720, USA
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, CA 94720, USA
- UC Berkeley–UC San Francisco Graduate Program in Bioengineering, Berkeley, CA 94720, USA
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Helen Wills Neuroscience Institute, Berkeley, CA 94720, USA
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16
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Chang HY, Yang WY. Golgi quality control and autophagy. IUBMB Life 2022; 74:361-370. [PMID: 35274438 DOI: 10.1002/iub.2611] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Accepted: 02/12/2022] [Indexed: 11/09/2022]
Abstract
Organelles can easily be disrupted by intracellular and extracellular factors. Studies on ER and mitochondria indicate that a wide range of responses are elicited upon organelle disruption. One response thought to be of particular importance is autophagy. Cells can target entire organelles into autophagosomes for removal. This wholesale nature makes autophagy a robust means for eliminating compromised organelles. Recently, it was demonstrated that the Golgi apparatus is a substrate of autophagy. On the other hand, various reports have shown that components traffic away from the Golgi for elimination in an autophagosome-independent manner when the Golgi apparatus is stressed. Future studies will reveal how these different pieces of machinery coordinate to drive Golgi degradation. Quantitative measurements will be needed to determine how much autophagy contributes to the maintenance of the Golgi apparatus.
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Affiliation(s)
- Hsiang-Yi Chang
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan
| | - Wei Yuan Yang
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan.,Institute of Biochemical Sciences, College of Life Sciences, National Taiwan University, Taipei, Taiwan
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17
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Ding L, Tang S, Yu A, Wang A, Tang W, Jia H, Oupický D. Nanoemulsion-Assisted siRNA Delivery to Modulate the Nervous Tumor Microenvironment in the Treatment of Pancreatic Cancer. ACS APPLIED MATERIALS & INTERFACES 2022; 14:10015-10029. [PMID: 35188730 PMCID: PMC9153289 DOI: 10.1021/acsami.1c21997] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Pancreatic cancer (PC) is a fatal human cancer, whose progression is highly dependent on the nervous tumor microenvironment. In the present study, cationic perfluorocarbon nanoemulsions were employed as an intraperitoneal delivery platform to facilitate the delivery and penetration of a therapeutic small interfering RNA (siRNA) to orthotopic pancreatic tumors. The nanoemulsion was used to silence the expression of the nerve growth factor (NGF) as a way of favorably modulating the tumor-neuronal interactions in pancreatic tumors. The nanoemulsions exhibited deep tumor penetration that was dependent on exocytosis and enhanced NGF gene silencing in vitro and in vivo when compared with control polycation/siRNA polyplexes, leading to the effective and safe suppression of tumor growth in orthotopic PC. Overall, emulsion-assisted delivery of NGF siRNA is a promising treatment approach for PC by targeting the interactions between the tumor cells and the nervous microenvironment.
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Affiliation(s)
- Ling Ding
- Center for Drug Delivery and Nanomedicine, Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, Nebraska 68198, USA
| | - Siyuan Tang
- Center for Drug Delivery and Nanomedicine, Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, Nebraska 68198, USA
| | - Ao Yu
- Center for Drug Delivery and Nanomedicine, Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, Nebraska 68198, USA
| | - Anlin Wang
- Center for Drug Delivery and Nanomedicine, Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, Nebraska 68198, USA
| | - Weimin Tang
- Center for Drug Delivery and Nanomedicine, Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, Nebraska 68198, USA
| | - Huizhen Jia
- Center for Drug Delivery and Nanomedicine, Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, Nebraska 68198, USA
| | - David Oupický
- Center for Drug Delivery and Nanomedicine, Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, Nebraska 68198, USA
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18
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Ho LWC, Chan CKW, Han R, Lau YFY, Li H, Ho YP, Zhuang X, Choi CHJ. Mammalian Cells Exocytose Alkylated Gold Nanoparticles via Extracellular Vesicles. ACS NANO 2022; 16:2032-2045. [PMID: 35137580 DOI: 10.1021/acsnano.1c07418] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Understanding the exocytosis of nanoparticles (NPs) from cells is valuable because it informs design rules of NPs that support desirable cellular retention for nanomedicine applications, but investigations into the mechanism for the exocytosis of NPs remain scarce. We elucidate the mechanism for the exocytosis of dodecyl-terminated, polyethylene glycol-coated gold NPs (termed "dodecyl-PEG-AuNP"). The Au core enables ultrastructural differentiation of the exocytosed NPs from the nearby extracellular vesicles (EVs). The PEG shell prevents interparticle agglomeration or aggregation that disfavors exocytosis. The minute amounts of alkyl chains on the PEG shell not only promote cellular uptake but also improve exocytosis by up to 4-fold higher probability and upregulate exocytosis- and vesicle-related genes. After entering Kera-308 keratinocytes and trafficking to multivesicular bodies and lysosomes, these NPs exit the cell predominantly via unconventional exocytosis, accompanied by enhanced secretion of sub-100 nm, CD81-enriched exosomes. The pathway for NP exocytosis and subpopulation of EVs that are secreted alongside the exocytosed NPs depends on dodecyl loading. This work provides insights into dissecting the mechanism of NP exocytosis and its relationship with EV secretion.
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19
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Culbreth M, Nyffeler J, Willis C, Harrill JA. Optimization of Human Neural Progenitor Cells for an Imaging-Based High-Throughput Phenotypic Profiling Assay for Developmental Neurotoxicity Screening. FRONTIERS IN TOXICOLOGY 2022; 3:803987. [PMID: 35295155 PMCID: PMC8915842 DOI: 10.3389/ftox.2021.803987] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 12/27/2021] [Indexed: 11/13/2022] Open
Abstract
Studies in in vivo rodent models have been the accepted approach by regulatory agencies to evaluate potential developmental neurotoxicity (DNT) of chemicals for decades. These studies, however, are inefficient and cannot meet the demand for the thousands of chemicals that need to be assessed for DNT hazard. As such, several in vitro new approach methods (NAMs) have been developed to circumvent limitations of these traditional studies. The DNT NAMs, some of which utilize human-derived cell models, are intended to be employed in a testing battery approach, each focused on a specific neurodevelopmental process. The need for multiple assays, however, to evaluate each process can prolong testing and prioritization of chemicals for more in depth assessments. Therefore, a multi-endpoint higher-throughput approach to assess DNT hazard potential would be of value. Accordingly, we have adapted a high-throughput phenotypic profiling (HTPP) approach for use with human-derived neural progenitor (hNP1) cells. HTPP is a fluorescence-based assay that quantitatively measures alterations in cellular morphology. This approach, however, required optimization of several laboratory procedures prior to chemical screening. First, we had to determine an appropriate cell plating density in 384-well plates. We then had to identify the minimum laminin concentration required for optimal cell growth and attachment. And finally, we had to evaluate whether addition of antibiotics to the culture medium would alter cellular morphology. We selected 6,000 cells/well as an appropriate plating density, 20 µg/ml laminin for optimal cell growth and attachment, and antibiotic addition in the culture medium. After optimizing hNP1 cell culture conditions for HTPP, it was then necessary to select appropriate in-plate assay controls from a reference chemical set. These reference chemicals were previously demonstrated to elicit unique phenotypic profiles in various other cell types. Aphidicolin, bafilomycin A1, berberine chloride, and cucurbitacin I induced robust phenotypic profiles as compared to dimethyl sulfoxide vehicle control in the hNP1 cells, and thus can be employed as in-plate assay controls for subsequent chemical screens. We have optimized HTPP for hNP1 cells, and consequently this approach can now be assessed as a potential NAM for DNT hazard evaluation and results compared to previously developed DNT assays.
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Affiliation(s)
- Megan Culbreth
- Center for Computational Toxicology and Exposure, Office of Research and Development, U.S. Environmental Protection Agency, Durham, NC, United States
| | - Johanna Nyffeler
- Center for Computational Toxicology and Exposure, Office of Research and Development, U.S. Environmental Protection Agency, Durham, NC, United States
- Oak Ridge Institute for Science and Education (ORISE) Postdoctoral Fellow, Oak Ridge, TN, United States
| | - Clinton Willis
- Center for Computational Toxicology and Exposure, Office of Research and Development, U.S. Environmental Protection Agency, Durham, NC, United States
| | - Joshua A. Harrill
- Center for Computational Toxicology and Exposure, Office of Research and Development, U.S. Environmental Protection Agency, Durham, NC, United States
- *Correspondence: Joshua A. Harrill,
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20
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Kurabi A, Pak K, Chavez E, Doan J, Ryan AF. A transcytotic transport mechanism across the tympanic membrane. Sci Rep 2022; 12:984. [PMID: 35046419 PMCID: PMC8770641 DOI: 10.1038/s41598-021-04748-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 12/14/2021] [Indexed: 11/20/2022] Open
Abstract
Drug treatments for middle ear diseases are currently delivered systemically, or locally after opening the impermeable tympanic membrane (TM). We previously used bacteriophage display to discover novel peptides that are actively transported across the intact TM, with a variety of transport rates. Peptide structures were analyzed for evidence regarding the mechanism for this unexpected transport, which was then tested by the application of chemical inhibitors. Primary sequences indicated that trans-TM peptides share one of two amino acid motifs. Secondary structures revealed that linear configurations associate with higher transport rates than coiled structures. Tertiary analysis indicated that the shared sequence motifs are prominently displayed at the free ends of rapidly transported peptide phage. The shared motifs were evaluated for similarity to known motifs. The highest probability matches were for protein motifs involved in transmembrane transport and exosomes. Overall, structural findings suggest that the shared motifs represent binding sequences. They also implicate transcytosis, a polarized cell transport mechanism consisting of endocytosis, transcellular transport, and exocytosis. Inhibitor studies indicated that macropinocytosis, retrograde transport through Golgi and exocytosis participate in transport across the TM, consistent with transcytosis. This process can be harnessed to noninvasively deliver therapeutics to the middle ear.
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Affiliation(s)
- Arwa Kurabi
- Department of Surgery/Otolaryngology, University of California, 9500 Gilman Drive, La Jolla, CA, 92093-0666, USA.
- San Diego VA Healthcare System, La Jolla, CA, USA.
| | - Kwang Pak
- Department of Surgery/Otolaryngology, University of California, 9500 Gilman Drive, La Jolla, CA, 92093-0666, USA
| | - Eduardo Chavez
- Department of Surgery/Otolaryngology, University of California, 9500 Gilman Drive, La Jolla, CA, 92093-0666, USA
| | - Jennifer Doan
- Department of Biology, University of California, San Diego, USA
| | - Allen F Ryan
- Department of Surgery/Otolaryngology, University of California, 9500 Gilman Drive, La Jolla, CA, 92093-0666, USA
- Department of Neurosciences, University of California, San Diego, USA
- San Diego VA Healthcare System, La Jolla, CA, USA
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21
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Chen S, Zhou Q, Wang G, Zhou Z, Tang J, Xie T, Shen Y. Effect of Cationic Charge Density on Transcytosis of Polyethylenimine. Biomacromolecules 2021; 22:5139-5150. [PMID: 34775750 DOI: 10.1021/acs.biomac.1c01109] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The adsorption-mediated transcytosis (AMT) induced by the electrostatic interaction between the positively charged surface of carriers and negatively charged cell membrane is a new paradigm enabling nanomedicine's tumor extravasation and infiltration. However, little is known about the correlation between the carrier's charge density and its AMT-induced tumor infiltration efficiency. Herein, we investigate the effect of the cationic polymer's charge on the AMT-induced tumor penetration ability using in vitro multilayer tumor spheroids (MTSs). A cationic polymer, polyethylenimine (PEI), is amidized with acetic anhydride to obtain acetylated PEIs (AcPEIs) with different cationic charge densities. As the amidization ratio increases, the AcPEIs' cytotoxicity, zeta potential, and cell-binding affinity significantly decrease. Notably, not only does the weak cell binding (AcPEIs with high acetylation degrees) lead to slow endocytosis and inefficient transcytosis, so does the strong cell-binding PEI. The PEI with 24% acetylation (AcPEI24%) is found to have the highest transcytosis efficiency because its balanced cell-binding affinity triggers fast adsorption-mediated endocytosis. The subsequent Golgi apparatus/endoplasmic reticulum-mediated exocytosis via extracellular vesicles leads to highly effective transcellular delivery and tumor penetration in MTSs. Therefore, the drug carrier's surface cationic charge density critically influences its AMT-induced tumor penetration efficiency. This study provides mechanistic insights into the design of drug-delivery systems with active transcytosis for improved tumor penetration and enhanced therapeutic efficiency.
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Affiliation(s)
- Siqin Chen
- Center for Bionanoengineering, Key Laboratory of Biomass Chemical Engineering of the Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China.,Hangzhou Global Scientific and Technological Innovation Center, Hangzhou 311215, China
| | - Quan Zhou
- Center for Bionanoengineering, Key Laboratory of Biomass Chemical Engineering of the Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China.,Department of Cell Biology, Zhejiang University School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Guowei Wang
- Center for Bionanoengineering, Key Laboratory of Biomass Chemical Engineering of the Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China.,Hangzhou Global Scientific and Technological Innovation Center, Hangzhou 311215, China
| | - Zhuxian Zhou
- Center for Bionanoengineering, Key Laboratory of Biomass Chemical Engineering of the Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China.,Hangzhou Global Scientific and Technological Innovation Center, Hangzhou 311215, China
| | - Jianbin Tang
- Center for Bionanoengineering, Key Laboratory of Biomass Chemical Engineering of the Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China.,Hangzhou Global Scientific and Technological Innovation Center, Hangzhou 311215, China
| | - Tao Xie
- Center for Bionanoengineering, Key Laboratory of Biomass Chemical Engineering of the Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China.,Hangzhou Global Scientific and Technological Innovation Center, Hangzhou 311215, China
| | - Youqing Shen
- Center for Bionanoengineering, Key Laboratory of Biomass Chemical Engineering of the Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China.,Hangzhou Global Scientific and Technological Innovation Center, Hangzhou 311215, China
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22
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Dobrovolskaite A, Madan M, Pandey V, Altomare DA, Phanstiel O. The discovery of indolone GW5074 during a comprehensive search for non-polyamine-based polyamine transport inhibitors. Int J Biochem Cell Biol 2021; 138:106038. [PMID: 34252566 DOI: 10.1016/j.biocel.2021.106038] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 06/28/2021] [Accepted: 07/05/2021] [Indexed: 01/15/2023]
Abstract
The native polyamines putrescine, spermidine, and spermine are essential for cell development and proliferation. Polyamine levels are often increased in cancer tissues and polyamine depletion is a validated anticancer strategy. Cancer cell growth can be inhibited by the polyamine biosynthesis inhibitor difluoromethylornithine (DFMO), which inhibits ornithine decarboxylase (ODC), the rate-limiting enzyme in the polyamine biosynthesis pathway. Unfortunately, cells treated with DFMO often replenish their polyamine pools by importing polyamines from their environment. Several polyamine-based molecules have been developed to work as polyamine transport inhibitors (PTIs) and have been successfully used in combination with DFMO in several cancer models. Here, we present the first comprehensive search for potential non-polyamine based PTIs that work in human pancreatic cancer cells in vitro. After identifying and testing five different categories of compounds, we have identified the c-RAF inhibitor, GW5074, as a novel non-polyamine based PTI. GW5074 inhibited the uptake of all three native polyamines and a fluorescent-polyamine probe into human pancreatic cancer cells. GW5074 significantly reduced pancreatic cancer cell growth in vitro when treated in combination with DFMO and a rescuing dose of spermidine. Moreover, GW5074 alone reduced tumor growth when tested in a murine pancreatic cancer mouse model in vivo. In summary, GW5074 is a novel non-polyamine-based PTI that potentiates the anticancer activity of DFMO in pancreatic cancers.
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Affiliation(s)
- Aiste Dobrovolskaite
- Department of Medical Education, College of Medicine, University of Central Florida, Orlando, 32827, United States
| | - Meenu Madan
- Department of Medical Education, College of Medicine, University of Central Florida, Orlando, 32827, United States
| | - Veethika Pandey
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, 32827, United States
| | - Deborah A Altomare
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, 32827, United States
| | - Otto Phanstiel
- Department of Medical Education, College of Medicine, University of Central Florida, Orlando, 32827, United States.
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23
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Wan MM, Chen H, Da Wang Z, Liu ZY, Yu YQ, Li L, Miao ZY, Wang XW, Wang Q, Mao C, Shen J, Wei J. Nitric Oxide-Driven Nanomotor for Deep Tissue Penetration and Multidrug Resistance Reversal in Cancer Therapy. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:2002525. [PMID: 33552861 PMCID: PMC7856908 DOI: 10.1002/advs.202002525] [Citation(s) in RCA: 73] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 09/01/2020] [Indexed: 05/19/2023]
Abstract
Poor permeation of therapeutic agents and multidrug resistance (MDR) in solid tumors are the two major challenges that lead to the failure of the current chemotherapy methods. Herein, a zero-waste doxorubicin-loaded heparin/folic acid/l-arginine (HFLA-DOX) nanomotor with motion ability and sustained release of nitric oxide (NO) to achieve deep drug penetration and effective reversal of MDR in cancer chemotherapy is designed. The targeted recognition, penetration of blood vessels, intercellular penetration, special intracellular distribution (escaping from lysosomes and accumulating in Golgi and nucleus), 3D multicellular tumor spheroids (3D MTSs) penetration, degradation of tumor extracellular matrix (ECM), and reversal of MDR based on the synergistic effects of the motion ability and sustained NO release performance of the NO-driven nanomotors are investigated in detail. Correspondingly, a new chemotherapy mode called recognition-penetration-reversal-elimination is proposed, whose effectiveness is verified by in vitro cellular experiments and in vivo animal tumor model, which can not only provide effective solutions to these challenges encountered in cancer chemotherapy, but also apply to other therapy methods for the special deep-tissue penetration ability of a therapeutic agent.
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Affiliation(s)
- Mi Mi Wan
- National and Local Joint Engineering Research Center of Biomedical Functional MaterialsSchool of Chemistry and Materials ScienceNanjing Normal UniversityNanjing210023China
| | - Huan Chen
- National and Local Joint Engineering Research Center of Biomedical Functional MaterialsSchool of Chemistry and Materials ScienceNanjing Normal UniversityNanjing210023China
| | - Zhong Da Wang
- The Comprehensive Cancer Centre of Nanjing Drum Tower HospitalThe Affiliated Hospital of Nanjing University Medical SchoolNanjing210008China
| | - Zhi Yong Liu
- National and Local Joint Engineering Research Center of Biomedical Functional MaterialsSchool of Chemistry and Materials ScienceNanjing Normal UniversityNanjing210023China
| | - Yue Qi Yu
- National and Local Joint Engineering Research Center of Biomedical Functional MaterialsSchool of Chemistry and Materials ScienceNanjing Normal UniversityNanjing210023China
| | - Lin Li
- The Comprehensive Cancer Centre of Nanjing Drum Tower HospitalThe Affiliated Hospital of Nanjing University Medical SchoolNanjing210008China
| | - Zhuo Yue Miao
- National and Local Joint Engineering Research Center of Biomedical Functional MaterialsSchool of Chemistry and Materials ScienceNanjing Normal UniversityNanjing210023China
| | - Xing Wen Wang
- National and Local Joint Engineering Research Center of Biomedical Functional MaterialsSchool of Chemistry and Materials ScienceNanjing Normal UniversityNanjing210023China
| | - Qi Wang
- National and Local Joint Engineering Research Center of Biomedical Functional MaterialsSchool of Chemistry and Materials ScienceNanjing Normal UniversityNanjing210023China
| | - Chun Mao
- National and Local Joint Engineering Research Center of Biomedical Functional MaterialsSchool of Chemistry and Materials ScienceNanjing Normal UniversityNanjing210023China
| | - Jian Shen
- National and Local Joint Engineering Research Center of Biomedical Functional MaterialsSchool of Chemistry and Materials ScienceNanjing Normal UniversityNanjing210023China
| | - Jia Wei
- The Comprehensive Cancer Centre of Nanjing Drum Tower HospitalThe Affiliated Hospital of Nanjing University Medical SchoolNanjing210008China
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24
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Wang J, Zhuang X, Greene KS, Si H, Antonyak MA, Druso JE, Wilson KF, Cerione RA, Feng Q, Wang H. Cdc42 functions as a regulatory node for tumour-derived microvesicle biogenesis. J Extracell Vesicles 2021; 10:e12051. [PMID: 33473262 PMCID: PMC7804048 DOI: 10.1002/jev2.12051] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 11/30/2020] [Accepted: 12/10/2020] [Indexed: 12/20/2022] Open
Abstract
Tumour-derived microvesicles (MVs) serve as critical mediators of cell-to-cell communication in the tumour microenvironment. So far, the underlying mechanisms of MV biogenesis, especially how key tumorigenesis signals such as abnormal EGF signalling regulates MV release, remain unclear. Here, we set out to establish reliable readouts for MV biogenesis and then explore the molecular mechanisms that regulate MV generation. We found that Rho family small G protein Cdc42 is a convergent node of multiple regulatory signals that occur in MV biogenesis. The binding of activated GTP-bound Cdc42 and its downstream effector, Ras GTPase-activating-like protein 1 (IQGAP1), is required for MV shedding. Activated Cdc42 maintains sustained EGF signalling by inhibiting the internalization of cell surface receptors, including EGFR and the VEGF oligomer, VEGF90K, and then facilitates MV release. Subsequently, we further demonstrated that blocking these signalling pathways using the corresponding mutants effectively reduced MV shedding and significantly inhibited MV-promoted in vivo tumour angiogenesis. These findings reveal a complex regulation of MV shedding by tumour cells, shedding light on the regulatory mechanism of MV biogenesis, and potentially contributing to strategies that target MVs in cancer therapy.
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Affiliation(s)
- Jing Wang
- Cancer Research Center The First Affiliated Hospital of USTC Division of Life Sciences and Medicine University of Science and Technology of China Hefei Anhui China.,National Center for Liver Cancer Eastern Hepatobiliary Surgery Hospital/Institute the Second Military Medical University Shanghai China
| | - Xiangjin Zhuang
- Cancer Research Center The First Affiliated Hospital of USTC Division of Life Sciences and Medicine University of Science and Technology of China Hefei Anhui China.,National Center for Liver Cancer Eastern Hepatobiliary Surgery Hospital/Institute the Second Military Medical University Shanghai China
| | - Kai Su Greene
- Department of Molecular Medicine Cornell University Ithaca New York USA
| | - Ha Si
- National Center for Liver Cancer Eastern Hepatobiliary Surgery Hospital/Institute the Second Military Medical University Shanghai China.,Affiliated Hospital of Inner Mongolia University for the Nationalities Tongliao Inner Mongolia China
| | - Marc A Antonyak
- Department of Molecular Medicine Cornell University Ithaca New York USA
| | - Joseph E Druso
- Department of Molecular Medicine Cornell University Ithaca New York USA
| | - Kristin F Wilson
- Department of Molecular Medicine Cornell University Ithaca New York USA
| | - Richard A Cerione
- Department of Molecular Medicine Cornell University Ithaca New York USA.,Department of Chemistry and Chemical Biology Cornell University Ithaca New York USA
| | - Qiyu Feng
- Cancer Research Center The First Affiliated Hospital of USTC Division of Life Sciences and Medicine University of Science and Technology of China Hefei Anhui China.,National Center for Liver Cancer Eastern Hepatobiliary Surgery Hospital/Institute the Second Military Medical University Shanghai China
| | - Hongyang Wang
- Cancer Research Center The First Affiliated Hospital of USTC Division of Life Sciences and Medicine University of Science and Technology of China Hefei Anhui China.,National Center for Liver Cancer Eastern Hepatobiliary Surgery Hospital/Institute the Second Military Medical University Shanghai China
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25
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Subramanian BC, Melis N, Chen D, Wang W, Gallardo D, Weigert R, Parent CA. The LTB4-BLT1 axis regulates actomyosin and β2-integrin dynamics during neutrophil extravasation. J Cell Biol 2020; 219:e201910215. [PMID: 32854115 PMCID: PMC7659729 DOI: 10.1083/jcb.201910215] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 06/17/2020] [Accepted: 07/23/2020] [Indexed: 12/13/2022] Open
Abstract
The eicosanoid leukotriene B4 (LTB4) relays chemotactic signals to direct neutrophil migration to inflamed sites through its receptor BLT1. However, the mechanisms by which the LTB4-BLT1 axis relays chemotactic signals during intravascular neutrophil response to inflammation remain unclear. Here, we report that LTB4 produced by neutrophils acts as an autocrine/paracrine signal to direct the vascular recruitment, arrest, and extravasation of neutrophils in a sterile inflammation model in the mouse footpad. Using intravital subcellular microscopy, we reveal that LTB4 elicits sustained cell polarization and adhesion responses during neutrophil arrest in vivo. Specifically, LTB4 signaling coordinates the dynamic redistribution of non-muscle myosin IIA and β2-integrin, which facilitate neutrophil arrest and extravasation. Notably, we also found that neutrophils shed extracellular vesicles in the vascular lumen and that inhibition of extracellular vesicle release blocks LTB4-mediated autocrine/paracrine signaling required for neutrophil arrest and extravasation. Overall, we uncover a novel complementary mechanism by which LTB4 relays extravasation signals in neutrophils during early inflammation response.
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Affiliation(s)
- Bhagawat C. Subramanian
- Laboratory of Cellular and Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Nicolas Melis
- Laboratory of Cellular and Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Desu Chen
- Laboratory of Cellular and Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Weiye Wang
- Laboratory of Cellular and Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Devorah Gallardo
- Laboratory Animal Sciences Program, Leidos Biomedical Research, National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Roberto Weigert
- Laboratory of Cellular and Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Carole A. Parent
- Laboratory of Cellular and Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD
- Department of Pharmacology, University of Michigan, Ann Arbor, MI
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26
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Iswanto ABB, Shon JC, Liu KH, Vu MH, Kumar R, Kim JY. Sphingolipids Modulate Secretion of Glycosylphosphatidylinositol-Anchored Plasmodesmata Proteins and Callose Deposition. PLANT PHYSIOLOGY 2020; 184:407-420. [PMID: 32636343 PMCID: PMC7479907 DOI: 10.1104/pp.20.00401] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 06/25/2020] [Indexed: 05/04/2023]
Abstract
Plasma membranes encapsulated in the symplasmic nanochannels of plasmodesmata (PD) contain abundant lipid rafts, which are enriched with sphingolipids (SLs) and sterols. Reduction of sterols has highlighted the role played by lipid raft integrity in the intercellular trafficking of glycosylphosphatidylinositol (GPI)-anchored PD proteins, particularly in affecting callose enhancement. The presence of callose at PD is strongly attributed to the regulation of callose accumulation and callose degradation by callose synthases and β-1,3-glucanases (BGs), respectively. SLs are implicated in signaling and membrane protein trafficking; however, the underlying processes linking SL composition to the control of symplasmic apertures remain unknown. The wide variety of SLs in plants prompted us to investigate which SL molecules are important for regulating symplasmic apertures in Arabidopsis (Arabidopsis thaliana). We introduced several potential SL pathway inhibitors and genetically modified SL contents using two independent SL pathway mutants. We were able to modulate callose deposition to control symplasmic connectivity through perturbations of SL metabolism. Alteration in glucosylhydroxyceramides or related SL composition particularly disturbed the secretory machinery for the GPI-anchored PdBG2 protein, resulting in an overaccumulation of callose. Moreover, our results revealed that SL-enriched lipid rafts link symplasmic channeling to PD callose homeostasis by controlling the targeting of GPI-anchored PdBG2. This study elevates our understanding of the molecular linkage underlying intracellular trafficking and precise targeting of GPI-anchored PD proteins incorporating glucosyl SLs.
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Affiliation(s)
- Arya Bagus Boedi Iswanto
- Division of Applied Life Science (BK21 Plus Program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju 660-701, Republic of Korea
| | - Jong Cheol Shon
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu 702-701, Republic of Korea
- Environmental Chemistry Research Group, Korea Institute of Toxicology, Jinju 52834, Republic of Korea
| | - Kwang Hyeon Liu
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu 702-701, Republic of Korea
| | - Minh Huy Vu
- Division of Applied Life Science (BK21 Plus Program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju 660-701, Republic of Korea
| | - Ritesh Kumar
- Division of Applied Life Science (BK21 Plus Program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju 660-701, Republic of Korea
| | - Jae-Yean Kim
- Division of Applied Life Science (BK21 Plus Program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju 660-701, Republic of Korea
- Division of Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea
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27
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Scott RA, Robinson KG, Kiick KL, Akins RE. Human Adventitial Fibroblast Phenotype Depends on the Progression of Changes in Substrate Stiffness. Adv Healthc Mater 2020; 9:e1901593. [PMID: 32105417 PMCID: PMC7274877 DOI: 10.1002/adhm.201901593] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 01/31/2020] [Indexed: 12/24/2022]
Abstract
Adventitial fibroblasts (AFs) are major contributors to vascular remodeling and maladaptive cascades associated with arterial disease, where AFs both contribute to and respond to alterations in their surrounding matrix. The relationships between matrix modulus and human aortic AF (AoAF) function are investigated using poly(ethylene glycol)-based hydrogels designed with matrix metalloproteinase (MMP)-sensitive and integrin-binding peptides. Initial equilibrium shear storage moduli for the substrates examined are 0.33, 1.42, and 2.90 kPa; after 42 days of culture, all hydrogels exhibit similar storage moduli (0.3-0.7 kPa) regardless of initial modulus, with encapsulated AoAFs spreading and proliferating. In 10 and 7.5 wt% hydrogels, modulus decreases monotonically throughout culture; however, in 5 wt% hydrogels, modulus increases after an initial 7 days of culture, accompanied by an increase in myofibroblast transdifferentiation and expression of collagen I and III through day 28. Thereafter, significant reductions in both collagens occur, with increased MMP-9 and decreased tissue inhibitor of metalloproteinase-1/-2 production. Releasing cytoskeletal tension or inhibiting cellular protein secretion in 5 wt% hydrogels block the stiffening of the polymer matrix. Results indicate that encapsulated AoAFs initiate cell-mediated matrix remodeling and demonstrate the utility of dynamic 3D systems to elucidate the complex interactions between cell behavior and substrate properties.
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Affiliation(s)
- Rebecca A. Scott
- Department of Materials Science and Engineering, University of Delaware, 201 DuPont, Hall, Newark, Delaware 19716, United States
- Nemours - Alfred I. duPont Hospital for Children, 1600 Rockland Road, Wilmington, Delaware 19803, United States
- Delaware Biotechnology Institute, University of Delaware, 15 Innovation Way, Newark, DE 19711, United States
| | - Karyn G. Robinson
- Nemours - Alfred I. duPont Hospital for Children, 1600 Rockland Road, Wilmington, Delaware 19803, United States
| | - Kristi L. Kiick
- Department of Materials Science and Engineering, University of Delaware, 201 DuPont, Hall, Newark, Delaware 19716, United States
- Delaware Biotechnology Institute, University of Delaware, 15 Innovation Way, Newark, DE 19711, United States
| | - Robert E. Akins
- Department of Materials Science and Engineering, University of Delaware, 201 DuPont, Hall, Newark, Delaware 19716, United States
- Nemours - Alfred I. duPont Hospital for Children, 1600 Rockland Road, Wilmington, Delaware 19803, United States
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28
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Luesch H, Paavilainen VO. Natural products as modulators of eukaryotic protein secretion. Nat Prod Rep 2020; 37:717-736. [PMID: 32067014 DOI: 10.1039/c9np00066f] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Covering: up to the end of 2019Diverse natural product small molecules have allowed critical insights into processes that govern eukaryotic cells' ability to secrete cytosolically synthesized secretory proteins into their surroundings or to insert newly synthesized integral membrane proteins into the lipid bilayer of the endoplasmic reticulum. In addition, many components of the endoplasmic reticulum, required for protein homeostasis or other processes such as lipid metabolism or maintenance of calcium homeostasis, are being investigated for their potential in modulating human disease conditions such as cancer, neurodegenerative conditions and diabetes. In this review, we cover recent findings up to the end of 2019 on natural products that influence protein secretion or impact ER protein homeostasis, and serve as powerful chemical tools to understand protein flux through the mammalian secretory pathway and as leads for the discovery of new therapeutics.
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Affiliation(s)
- Hendrik Luesch
- Department of Medicinal Chemistry, Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida, P.O. Box 100485, Gainesville, Florida 32610, USA.
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29
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Cyclophilin a signaling induces pericyte-associated blood-brain barrier disruption after subarachnoid hemorrhage. J Neuroinflammation 2020; 17:16. [PMID: 31926558 PMCID: PMC6954572 DOI: 10.1186/s12974-020-1699-6] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Accepted: 01/02/2020] [Indexed: 02/07/2023] Open
Abstract
Objective The potential roles and mechanisms of pericytes in maintaining blood–brain barrier (BBB) integrity, which would be helpful for the development of therapeutic strategies for subarachnoid hemorrhage (SAH), remain unclear. We sought to provide evidence on the potential role of pericytes in BBB disruption and possible involvement and mechanism of CypA signaling in both cultured pericytes and SAH models. Methods Three hundred fifty-three adult male C57B6J mice weighing 22 to 30 g, 29 CypA−/− mice, 30 CypA+/+ (flox/flox) mice, and 30 male neonatal C57B6J mice were used to investigate the time course of CypA expression in pericytes after SAH, the intrinsic function and mechanism of CypA in pericytes, and whether the known receptor CD147 mediates these effects. Results Our data demonstrated both intracellular CypA and CypA secretion increased after SAH and could activate CD147 receptor and downstream NF-κB pathway to induce MMP9 expression and proteolytic functions for degradation of endothelium tight junction proteins and basal membranes. CypA served as autocrine or paracrine ligand for its receptor, CD147. Although CypA could be endocytosed by pericytes, specific endocytosis inhibitor chlorpromazine did not have any effect on MMP9 activation. However, specific knockdown of CD147 could reverse the harmful effects of CypA expression in pericytes on the BBB integrity after SAH. Conclusions This study demonstrated for the first time that CypA mediated the harmful effects of pericytes on BBB disruption after SAH, which potentially mediated by CD147/NF-κB/MMP9 signal, and junction protein degradation in the brain. By targeting CypA and pericytes, this study may provide new insights on the management of SAH patients.
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30
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Li M, Lee A, Kim S, Shrinidhi A, Park KM, Kim K. Cucurbit[7]uril-conjugated dyes as live cell imaging probes: investigation on their cellular uptake and excretion pathways. Org Biomol Chem 2020; 17:6215-6220. [PMID: 31179469 DOI: 10.1039/c9ob00356h] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Here we report the endocytosis and excretion pathways of two different dye-conjugated cucurbit[7]urils, (cyanine 3-conjugated CB[7] and rhodamine X-conjugated CB[7]), which have great potential as molecular probes for live cell imaging. The dye-CB[7]s are translocated into live cells (human breast carcinoma cells, MCF-7) via multiple pathways, predominantly by clathrin-mediated endocytosis, and excreted from cells via lysosome-associated exocytosis. Interestingly, the CB[7] moiety has a substantial influence on the uptake and excretion pathways. These findings may widen the applications of the dyes conjugated to CB[7] and assist in the design of new molecular probes for live cell imaging.
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Affiliation(s)
- Meng Li
- Center for Self-assembly and Complexity (CSC), Institute for Basic Science (IBS), Pohang, 37673, Republic of Korea.
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31
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Gravely M, Safaee MM, Roxbury D. Biomolecular Functionalization of a Nanomaterial To Control Stability and Retention within Live Cells. NANO LETTERS 2019; 19:6203-6212. [PMID: 31424226 PMCID: PMC7199458 DOI: 10.1021/acs.nanolett.9b02267] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Noncovalent hybrids of single-stranded DNA and single-walled carbon nanotubes (SWCNTs) have demonstrated applications in biomedical imaging and sensing due to their enhanced biocompatibility and photostable, environmentally responsive near-infrared (NIR) fluorescence. The fundamental properties of such DNA-SWCNTs have been studied to determine the correlative relationships between oligonucleotide sequence and length, SWCNT species, and the physical attributes of the resultant hybrids. However, intracellular environments introduce harsh conditions that can change the physical identities of the hybrid nanomaterials, thus altering their intrinsic optical properties. Here, through visible and NIR fluorescence imaging in addition to confocal Raman microscopy, we show that the oligonucleotide length controls the relative uptake, intracellular optical stability, and retention of DNA-SWCNTs in mammalian cells. Although the absolute NIR fluorescence intensity of DNA-SWCNTs in murine macrophages increases with increasing oligonucleotide length (from 12 to 60 nucleotides), we found that shorter oligonucleotide DNA-SWCNTs undergo a greater magnitude of spectral shift and are more rapidly internalized and expelled from the cell after 24 h. Furthermore, by labeling the DNA with a fluorophore that dequenches upon removal from the SWCNT surface, we found that shorter oligonucleotide strands are displaced from the SWCNT within the cell, altering the physical identity and changing the fate of the internalized nanomaterial. Finally, through a pharmacological inhibition study, we identified the mechanism of SWCNT expulsion from the cells as lysosomal exocytosis. These findings provide a fundamental understanding of the interactions between SWCNTs and live cells as well as evidence suggesting the ability to control the biological fate of the nanomaterials merely by varying the type of DNA wrapping.
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Affiliation(s)
- Mitchell Gravely
- Department of Chemical Engineering , University of Rhode Island , Kingston , Rhode Island 02881 , United States
| | - Mohammad Moein Safaee
- Department of Chemical Engineering , University of Rhode Island , Kingston , Rhode Island 02881 , United States
| | - Daniel Roxbury
- Department of Chemical Engineering , University of Rhode Island , Kingston , Rhode Island 02881 , United States
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32
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Loebel C, Mauck RL, Burdick JA. Local nascent protein deposition and remodelling guide mesenchymal stromal cell mechanosensing and fate in three-dimensional hydrogels. NATURE MATERIALS 2019; 18:883-891. [PMID: 30886401 PMCID: PMC6650309 DOI: 10.1038/s41563-019-0307-6] [Citation(s) in RCA: 227] [Impact Index Per Article: 45.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Accepted: 02/04/2019] [Indexed: 05/17/2023]
Abstract
Hydrogels serve as valuable tools for studying cell-extracellular matrix interactions in three-dimensional environments that recapitulate aspects of native extracellular matrix. However, the impact of early protein deposition on cell behaviour within hydrogels has largely been overlooked. Using a bio-orthogonal labelling technique, we visualized nascent proteins within a day of culture across a range of hydrogels. In two engineered hydrogels of interest in three-dimensional mechanobiology studies-proteolytically degradable covalently crosslinked hyaluronic acid and dynamic viscoelastic hyaluronic acid hydrogels-mesenchymal stromal cell spreading, YAP/TAZ nuclear translocation and osteogenic differentiation were observed with culture. However, inhibition of cellular adhesion to nascent proteins or reduction in nascent protein remodelling reduced mesenchymal stromal cell spreading and nuclear translocation of YAP/TAZ, resulting in a shift towards adipogenic differentiation. Our findings emphasize the role of nascent proteins in the cellular perception of engineered materials and have implications for in vitro cell signalling studies and application to tissue repair.
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Affiliation(s)
- Claudia Loebel
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, USA
- Translational Musculoskeletal Research Center, Philadelphia VA Medical Center, Philadelphia, PA, USA
| | - Robert L Mauck
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, USA
- Translational Musculoskeletal Research Center, Philadelphia VA Medical Center, Philadelphia, PA, USA
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Jason A Burdick
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, USA.
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Dopamine neuron-derived IGF-1 controls dopamine neuron firing, skill learning, and exploration. Proc Natl Acad Sci U S A 2019; 116:3817-3826. [PMID: 30808767 PMCID: PMC6397563 DOI: 10.1073/pnas.1806820116] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Midbrain dopamine neurons play a role in motivational and cognitive control of behavior. In addition, they regulate motor functions. Dysregulation of dopamine neurons has been linked to depression, schizophrenia, and addiction and their degeneration is causal to Parkinson’s disease. Peripheral hormones have been shown to regulate dopamine neurons functions. Insulin-like growth factor 1 (IGF-1) is a hormone mainly produced in the liver. With this study we discovered that midbrain dopamine neurons synthesize and release IGF-1 in an activity dependent manner. In addition, dopamine neuron-derived IGF-1 modulates dopamine synthesis and dopamine neuron firing and ultimately it controls dopamine-dependent behaviors. This study highlights the neuromodulatory role of neuron-derived IGF-1 and its role in shaping dopamine transmission in the brain. Midbrain dopamine neurons, which can be regulated by neuropeptides and hormones, play a fundamental role in controlling cognitive processes, reward mechanisms, and motor functions. The hormonal actions of insulin-like growth factor 1 (IGF-1) produced by the liver have been well described, but the role of neuronally derived IGF-1 remains largely unexplored. We discovered that dopamine neurons secrete IGF-1 from the cell bodies following depolarization, and that IGF-1 controls release of dopamine in the ventral midbrain. In addition, conditional deletion of dopamine neuron-derived IGF-1 in adult mice leads to decrease of dopamine content in the striatum and deficits in dopamine neuron firing and causes reduced spontaneous locomotion and impairments in explorative and learning behaviors. These data identify that dopamine neuron-derived IGF-1 acts as a regulator of dopamine neurons and regulates dopamine-mediated behaviors.
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34
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Almiron Bonnin DA, Havrda MC, Israel MA. Glioma Cell Secretion: A Driver of Tumor Progression and a Potential Therapeutic Target. Cancer Res 2018; 78:6031-6039. [PMID: 30333116 DOI: 10.1158/0008-5472.can-18-0345] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 05/30/2018] [Accepted: 08/14/2018] [Indexed: 11/16/2022]
Abstract
Cellular secretion is an important mediator of cancer progression. Secreted molecules in glioma are key components of complex autocrine and paracrine pathways that mediate multiple oncogenic pathologies. In this review, we describe tumor cell secretion in high-grade glioma and highlight potential novel therapeutic opportunities. Cancer Res; 78(21); 6031-9. ©2018 AACR.
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Affiliation(s)
- Damian A Almiron Bonnin
- Department of Molecular and Systems Biology, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire.,Norris Cotton Cancer Center, Geisel School of Medicine at Dartmouth, Lebanon, New Hampshire
| | - Matthew C Havrda
- Department of Molecular and Systems Biology, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire.,Norris Cotton Cancer Center, Geisel School of Medicine at Dartmouth, Lebanon, New Hampshire
| | - Mark A Israel
- Department of Molecular and Systems Biology, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire. .,Norris Cotton Cancer Center, Geisel School of Medicine at Dartmouth, Lebanon, New Hampshire.,Departments of Medicine and Pediatrics, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire
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35
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Luo F, Tran AP, Xin L, Sanapala C, Lang BT, Silver J, Yang Y. Modulation of proteoglycan receptor PTPσ enhances MMP-2 activity to promote recovery from multiple sclerosis. Nat Commun 2018; 9:4126. [PMID: 30297691 PMCID: PMC6175851 DOI: 10.1038/s41467-018-06505-6] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Accepted: 09/07/2018] [Indexed: 12/20/2022] Open
Abstract
Multiple Sclerosis (MS) is characterized by focal CNS inflammation leading to the death of oligodendrocytes (OLs) with subsequent demyelination, neuronal degeneration, and severe functional deficits. Inhibitory chondroitin sulfate proteoglycans (CSPGs) are increased in the extracellular matrix in the vicinity of MS lesions and are thought to play a critical role in myelin regeneration failure. We here show that CSPGs curtail remyelination through binding with their cognate receptor, protein tyrosine phosphatase σ (PTPσ) on oligodendrocyte progenitor cells (OPCs). We report that inhibition of CSPG/PTPσ signaling by systemically deliverable Intracellular Sigma Peptide (ISP), promotes OPC migration, maturation, remyelination, and functional recovery in animal models of MS. Furthermore, we report a downstream molecular target of PTPσ modulation in OPCs involving upregulation of the protease MMP-2 that allows OPCs to enzymatically digest their way through CSPGs. In total, we demonstrate a critical role of PTPσ/CSPG interactions in OPC remyelination in MS. Demyelination failure in multiple sclerosis (MS) may contribute to the disease progression. This study shows that chondroitin sulfate proteoglycans (CSPGs) can inhibit remyelination in an animal model of MS via CSPG binding with the receptor PTPσ on oligodendrocyte progenitor cells, and disruption of this interaction can promote recovery in the animal models of MS.
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Affiliation(s)
- Fucheng Luo
- Department of Neurology, Case Western Reserve University School of Medicine, Cleveland, OH, 44106, USA
| | - Amanda Phuong Tran
- Department of Neurosciences, Case Western Reserve University School of Medicine, Cleveland, OH, 44106, USA
| | - Li Xin
- Department of Neurology, Case Western Reserve University School of Medicine, Cleveland, OH, 44106, USA
| | - Chandrika Sanapala
- Department of Neurosciences, Case Western Reserve University School of Medicine, Cleveland, OH, 44106, USA
| | - Bradley T Lang
- BioEnterprise, 11000 Cedar Avenue, Cleveland, OH, 44106, USA
| | - Jerry Silver
- Department of Neurosciences, Case Western Reserve University School of Medicine, Cleveland, OH, 44106, USA.
| | - Yan Yang
- Department of Neurology, Case Western Reserve University School of Medicine, Cleveland, OH, 44106, USA. .,Center for Translational Neurosciences, Case Western Reserve University School of Medicine, Cleveland, OH, 44106, USA.
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36
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Ferreira SA, Motwani MS, Faull PA, Seymour AJ, Yu TTL, Enayati M, Taheem DK, Salzlechner C, Haghighi T, Kania EM, Oommen OP, Ahmed T, Loaiza S, Parzych K, Dazzi F, Varghese OP, Festy F, Grigoriadis AE, Auner HW, Snijders AP, Bozec L, Gentleman E. Bi-directional cell-pericellular matrix interactions direct stem cell fate. Nat Commun 2018; 9:4049. [PMID: 30282987 PMCID: PMC6170409 DOI: 10.1038/s41467-018-06183-4] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Accepted: 08/10/2018] [Indexed: 11/29/2022] Open
Abstract
Modifiable hydrogels have revealed tremendous insight into how physical characteristics of cells' 3D environment drive stem cell lineage specification. However, in native tissues, cells do not passively receive signals from their niche. Instead they actively probe and modify their pericellular space to suit their needs, yet the dynamics of cells' reciprocal interactions with their pericellular environment when encapsulated within hydrogels remains relatively unexplored. Here, we show that human bone marrow stromal cells (hMSC) encapsulated within hyaluronic acid-based hydrogels modify their surroundings by synthesizing, secreting and arranging proteins pericellularly or by degrading the hydrogel. hMSC's interactions with this local environment have a role in regulating hMSC fate, with a secreted proteinaceous pericellular matrix associated with adipogenesis, and degradation with osteogenesis. Our observations suggest that hMSC participate in a bi-directional interplay between the properties of their 3D milieu and their own secreted pericellular matrix, and that this combination of interactions drives fate.
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Affiliation(s)
- Silvia A Ferreira
- Centre for Craniofacial and Regenerative Biology, King's College London, London, SE1 9RT, UK
| | - Meghna S Motwani
- Centre for Craniofacial and Regenerative Biology, King's College London, London, SE1 9RT, UK
| | - Peter A Faull
- Protein Analysis and Proteomics Platform, The Francis Crick Institute, London, NW1 1AT, UK
| | - Alexis J Seymour
- Centre for Craniofacial and Regenerative Biology, King's College London, London, SE1 9RT, UK
| | - Tracy T L Yu
- Centre for Craniofacial and Regenerative Biology, King's College London, London, SE1 9RT, UK
| | - Marjan Enayati
- Centre for Craniofacial and Regenerative Biology, King's College London, London, SE1 9RT, UK
- Ludwig Boltzmann Cluster for Cardiovascular Research at the Center for Biomedical Research, Medical University of Vienna, Vienna, Austria
| | - Dheraj K Taheem
- Centre for Craniofacial and Regenerative Biology, King's College London, London, SE1 9RT, UK
| | - Christoph Salzlechner
- Centre for Craniofacial and Regenerative Biology, King's College London, London, SE1 9RT, UK
| | - Tabasom Haghighi
- Centre for Craniofacial and Regenerative Biology, King's College London, London, SE1 9RT, UK
| | - Ewa M Kania
- Centre for Craniofacial and Regenerative Biology, King's College London, London, SE1 9RT, UK
| | - Oommen P Oommen
- Bioengineering and Nanomedicine Lab, Faculty of Biomedical Sciences and Engineering, Tampere University of Technology and BioMediTech Institute, 33720, Tampere, Finland
| | - Tarek Ahmed
- Biomaterials and Tissue Engineering, Eastman Dental Institute, University College London, London, WC1X 8LD, UK
| | - Sandra Loaiza
- Cancer Cell Protein Metabolism Group, Department of Medicine, Imperial College London, London, W12 0NN, UK
| | - Katarzyna Parzych
- Cancer Cell Protein Metabolism Group, Department of Medicine, Imperial College London, London, W12 0NN, UK
| | - Francesco Dazzi
- Department of Haemato-Oncology, Rayne Institute, King's College London, London, SE5 9NU, UK
| | - Oommen P Varghese
- Department of Chemistry, Ångström Laboratory, Science for Life Laboratory, Uppsala University, SE-75121, Uppsala, Sweden
| | - Frederic Festy
- Tissue Engineering and Biophotonics, King's College London, London, SE1 9RT, UK
| | - Agamemnon E Grigoriadis
- Centre for Craniofacial and Regenerative Biology, King's College London, London, SE1 9RT, UK
| | - Holger W Auner
- Cancer Cell Protein Metabolism Group, Department of Medicine, Imperial College London, London, W12 0NN, UK
| | - Ambrosius P Snijders
- Protein Analysis and Proteomics Platform, The Francis Crick Institute, London, NW1 1AT, UK
| | - Laurent Bozec
- Biomaterials and Tissue Engineering, Eastman Dental Institute, University College London, London, WC1X 8LD, UK
- Faculty of Dentistry, University of Toronto, 124 Edward Street, Toronto, Toronto, ON M5G 1G6, Canada
| | - Eileen Gentleman
- Centre for Craniofacial and Regenerative Biology, King's College London, London, SE1 9RT, UK.
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37
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Modulation of Receptor Protein Tyrosine Phosphatase Sigma Increases Chondroitin Sulfate Proteoglycan Degradation through Cathepsin B Secretion to Enhance Axon Outgrowth. J Neurosci 2018; 38:5399-5414. [PMID: 29760175 DOI: 10.1523/jneurosci.3214-17.2018] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 05/03/2018] [Accepted: 05/09/2018] [Indexed: 12/22/2022] Open
Abstract
Severed axon tips reform growth cones following spinal cord injury that fail to regenerate, in part, because they become embedded within an inhibitory extracellular matrix. Chondroitin sulfate proteoglycans (CSPGs) are the major axon inhibitory matrix component that is increased within the lesion scar and in perineuronal nets around deafferented neurons. We have recently developed a novel peptide modulator (intracellular sigma peptide) of the cognate receptor of CSPGs, protein tyrosine phosphatase σ (RPTPσ), which has been shown to markedly improve sensorimotor function, micturition, and coordinated locomotor behavior in spinal cord contused rats. However, the mechanism(s) underlying how modulation of RPTPσ mediates axon outgrowth through inhibitory CSPGs remain unclear. Here, we describe how intracellular sigma peptide modulation of RPTPσ induces enhanced protease Cathepsin B activity. Using DRG neurons from female Sprague Dawley rats cultured on an aggrecan/laminin spot assay and a combination of biochemical techniques, we provide evidence suggesting that modulation of RPTPσ regulates secretion of proteases that, in turn, relieves CSPG inhibition through its digestion to allow axon migration though proteoglycan barriers. Understanding the mechanisms underlying RPTPσ modulation elucidates how axon regeneration is impaired by proteoglycans but can then be facilitated following injury.SIGNIFICANCE STATEMENT Following spinal cord injury, chondroitin sulfate proteoglycans (CSPGs) upregulate and potently inhibit axon regeneration and functional recovery. Protein tyrosine phosphatase σ (RPTPσ) has been identified as a critical cognate receptor of CSPGs. We have previously characterized a synthetic peptide (intracellular sigma peptide) that targets the regulatory intracellular domain of the receptor to allow axons to regenerate despite the presence of CSPGs. Here, we have found that one important mechanism by which peptide modulation of the receptor enhances axon outgrowth is through secretion of a protease, Cathepsin B, which enables digestion of CSPGs. This work links protease secretion to the CSPG receptor RPTPσ for the first time with implications for understanding the molecular mechanisms underlying neural regeneration and plasticity.
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38
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Zhu X, Ji X, Kong N, Chen Y, Mahmoudi M, Xu X, Ding L, Tao W, Cai T, Li Y, Gan T, Barrett A, Bharwani Z, Chen H, Farokhzad OC. Intracellular Mechanistic Understanding of 2D MoS 2 Nanosheets for Anti-Exocytosis-Enhanced Synergistic Cancer Therapy. ACS NANO 2018; 12:2922-2938. [PMID: 29406760 PMCID: PMC6097229 DOI: 10.1021/acsnano.8b00516] [Citation(s) in RCA: 138] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Emerging two-dimensional (2D) nanomaterials, such as transition-metal dichalcogenide (TMD) nanosheets (NSs), have shown tremendous potential for use in a wide variety of fields including cancer nanomedicine. The interaction of nanomaterials with biosystems is of critical importance for their safe and efficient application. However, a cellular-level understanding of the nano-bio interactions of these emerging 2D nanomaterials ( i. e., intracellular mechanisms) remains elusive. Here we chose molybdenum disulfide (MoS2) NSs as representative 2D nanomaterials to gain a better understanding of their intracellular mechanisms of action in cancer cells, which play a significant role in both their fate and efficacy. MoS2 NSs were found to be internalized through three pathways: clathrin → early endosomes → lysosomes, caveolae → early endosomes → lysosomes, and macropinocytosis → late endosomes → lysosomes. We also observed autophagy-mediated accumulation in the lysosomes and exocytosis-induced efflux of MoS2 NSs. Based on these findings, we developed a strategy to achieve effective and synergistic in vivo cancer therapy with MoS2 NSs loaded with low doses of drug through inhibiting exocytosis pathway-induced loss. To the best of our knowledge, this is the first systematic experimental report on the nano-bio interaction of 2D nanomaterials in cells and their application for anti-exocytosis-enhanced synergistic cancer therapy.
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Affiliation(s)
- Xianbing Zhu
- School of Life Sciences, Tsinghua University, Beijing 100084, China
- Department of Biochemistry, Rosalind and Morris Goodman Cancer Research Center, McGill University, Montreal, Quebec H3A 1A3, Canada
| | - Xiaoyuan Ji
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Na Kong
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
- Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310000, China
| | - Yunhan Chen
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Morteza Mahmoudi
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Xiaoding Xu
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Li Ding
- School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Wei Tao
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
- School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Ting Cai
- School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Yujing Li
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Tian Gan
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Austin Barrett
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Zameer Bharwani
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Hongbo Chen
- School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Omid C. Farokhzad
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
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39
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Shim SM, Choi HR, Sung KW, Lee YJ, Kim ST, Kim D, Mun SR, Hwang J, Cha-Molstad H, Ciechanover A, Kim BY, Kwon YT. The endoplasmic reticulum-residing chaperone BiP is short-lived and metabolized through N-terminal arginylation. Sci Signal 2018; 11:11/511/eaan0630. [PMID: 29295953 DOI: 10.1126/scisignal.aan0630] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
BiP and other endoplasmic reticulum (ER)-resident proteins are thought to be metabolically stable and to function primarily in the ER lumen. We sought to assess how the abundance of these proteins dynamically fluctuates in response to various stresses and how their subpopulations are relocated to non-ER compartments such as the cytosol. We showed that the molecular chaperone BiP (also known as GRP78) was short-lived under basal conditions and ER stress. The turnover of BiP was in part driven by its amino-terminal arginylation (Nt-arginylation) by the arginyltransferase ATE1, which generated an autophagic N-degron of the N-end rule pathway. ER stress elicited the formation of R-BiP, an effect that was increased when the proteasome was also inhibited. Nt-arginylation correlated with the cytosolic relocalization of BiP under the types of stress tested. The cytosolic relocalization of BiP did not require the functionality of the unfolded protein response or the Sec61- or Derlin1-containing translocon. A key inhibitor of the turnover and Nt-arginylation of BiP was HERP (homocysteine-responsive ER protein), a 43-kDa ER membrane-integrated protein that is an essential component of ER-associated protein degradation. Pharmacological inhibition of the ER-Golgi secretory pathway also suppressed R-BiP formation. Finally, we showed that cytosolic R-BiP induced by ER stress and proteasomal inhibition was routed to autophagic vacuoles and possibly additional metabolic fates. These results suggest that Nt-arginylation is a posttranslational modification that modulates the function, localization, and metabolic fate of ER-resident proteins.
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Affiliation(s)
- Sang Mi Shim
- Protein Metabolism Medical Research Center, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea.,Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea
| | - Ha Rim Choi
- Protein Metabolism Medical Research Center, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea.,Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea
| | - Ki Woon Sung
- Protein Metabolism Medical Research Center, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea.,Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea
| | - Yoon Jee Lee
- Protein Metabolism Medical Research Center, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea.,Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea
| | - Sung Tae Kim
- Protein Metabolism Medical Research Center, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea.,Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea.,Center for Pharmacogenetics and Department of Pharmaceutical Sciences, School of Pharmacy, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Daeho Kim
- Protein Metabolism Medical Research Center, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea.,Department of Biophysics and Chemical Biology, College of Natural Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Su Ran Mun
- Protein Metabolism Medical Research Center, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea.,Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea
| | - Joonsung Hwang
- World Class Institute, Korea Research Institute of Bioscience and Biotechnology, Ochang, Cheongwon 28116, Republic of Korea
| | - Hyunjoo Cha-Molstad
- World Class Institute, Korea Research Institute of Bioscience and Biotechnology, Ochang, Cheongwon 28116, Republic of Korea
| | - Aaron Ciechanover
- Protein Metabolism Medical Research Center, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea.,Tumor and Vascular Biology Research Center, Rappaport Faculty of Medicine and Research Institute, Technion-Israel Institute of Technology, Haifa 31096, Israel
| | - Bo Yeon Kim
- World Class Institute, Korea Research Institute of Bioscience and Biotechnology, Ochang, Cheongwon 28116, Republic of Korea.
| | - Yong Tae Kwon
- Protein Metabolism Medical Research Center, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea. .,Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea.,Ischemic/Hypoxic Disease Institute, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea
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40
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Obata Y, Horikawa K, Shiina I, Takahashi T, Murata T, Tasaki Y, Suzuki K, Yonekura K, Esumi H, Nishida T, Abe R. Oncogenic Kit signalling on the Golgi is suppressed by blocking secretory trafficking with M-COPA in gastrointestinal stromal tumours. Cancer Lett 2017; 415:1-10. [PMID: 29196126 DOI: 10.1016/j.canlet.2017.11.032] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 11/14/2017] [Accepted: 11/23/2017] [Indexed: 02/08/2023]
Abstract
Most gastrointestinal stromal tumours (GISTs) are caused by constitutively active mutations in Kit tyrosine kinase. The drug imatinib, a specific Kit inhibitor, improves the prognosis of metastatic GIST patients, but these patients become resistant to the drug by acquiring secondary mutations in the Kit kinase domain. We recently reported that a Kit mutant causes oncogenic signals only on the Golgi apparatus in GISTs. In this study, we show that in GIST, 2-methylcoprophilinamide (M-COPA, also known as "AMF-26"), an inhibitor of biosynthetic protein trafficking from the endoplasmic reticulum (ER) to the Golgi, suppresses Kit autophosphorylation at Y703/Y721/Y730/Y936, resulting in blockade of oncogenic signalling. Results of our M-COPA treatment assay show that Kit Y703/Y730/Y936 in the ER are dephosphorylated by protein tyrosine phosphatases (PTPs), thus the ER-retained Kit is unable to activate downstream molecules. ER-localized Kit Y721 is not phosphorylated, but not due to PTPs. Importantly, M-COPA can inhibit the activation of the Kit kinase domain mutant, resulting in suppression of imatinib-resistant GIST proliferation. Our study demonstrates that Kit autophosphorylation is spatio-temporally regulated and may offer a new strategy for treating imatinib-resistant GISTs.
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Affiliation(s)
- Yuuki Obata
- Division of Immunobiology, Research Institute for Biomedical Sciences, Tokyo University of Science, Noda 278-0022, Chiba, Japan
| | - Keita Horikawa
- Division of Immunobiology, Research Institute for Biomedical Sciences, Tokyo University of Science, Noda 278-0022, Chiba, Japan
| | - Isamu Shiina
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Shinjuku-ku 162-8601, Tokyo, Japan
| | - Tsuyoshi Takahashi
- Department of Surgery, Graduate School of Medicine, Osaka University, Suita 565-0871, Osaka, Japan
| | - Takatsugu Murata
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Shinjuku-ku 162-8601, Tokyo, Japan
| | - Yasutaka Tasaki
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Shinjuku-ku 162-8601, Tokyo, Japan
| | - Kyohei Suzuki
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Shinjuku-ku 162-8601, Tokyo, Japan
| | - Keita Yonekura
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Shinjuku-ku 162-8601, Tokyo, Japan
| | - Hiroyasu Esumi
- Division of Clinical Research, Research Institute for Biomedical Sciences, Tokyo, University of Science, Japan
| | - Toshirou Nishida
- National Cancer Center Hospital, Chuo-ku, 104-0045, Tokyo, Japan
| | - Ryo Abe
- Division of Immunobiology, Research Institute for Biomedical Sciences, Tokyo University of Science, Noda 278-0022, Chiba, Japan.
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41
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Ding L, Zhu X, Wang Y, Shi B, Ling X, Chen H, Nan W, Barrett A, Guo Z, Tao W, Wu J, Shi X. Intracellular Fate of Nanoparticles with Polydopamine Surface Engineering and a Novel Strategy for Exocytosis-Inhibiting, Lysosome Impairment-Based Cancer Therapy. NANO LETTERS 2017; 17:6790-6801. [PMID: 29058908 DOI: 10.1021/acs.nanolett.7b03021] [Citation(s) in RCA: 117] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Polydopamine (PDA) coating as a bioinspired strategy for nanoparticles (NPs) has been extensively applied in cancer theranostics. However, a cellular-level understanding of nano-biointeraction of these PDA-coated NPs (PDNPs), which drives the fate of them and acts as a critical step to determine their efficacy, still remains unknown. Herein, we utilized the representative mesoporous silica NPs (MSNs) to be coated with PDA and study their nano-bioactivities in cancer cells. HeLa cell line was utilized as a model in this study. The PDNPs were discovered to be internalized through three specific pathways, that is, Caveolae-, Arf6-dependent endocytosis, and Rab34-mediated macropinocytosis (55%, 20% and 37% of uptake inhibition by nystatin, Arf6 knockdown, and rottlerin, respectively). Autophagy-mediated accumulation of PDNPs in lysosomes was observed and the formed PDA shells shedded in the lysosomes. Almost 40% of the NPs were transported out of cells via Rab8/10- and Rab3/26-mediated exocytosis pathways at our tested level. On the basis of these results, a novel combined cancer treatment strategy was further proposed using drug-loaded MSNs-PDA by (i) utilizing naturally intracellular mechanism-controlled PDA shedding for organelle-targeted release of drugs in lysosomes to generate lysosome impairment and (ii) blocking the demonstrated exocytosis pathways for enhanced therapeutic efficacy.
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Affiliation(s)
- Li Ding
- School of Life Sciences, Tsinghua University , Beijing 100084, China
- Graduate School at Shenzhen, Tsinghua University , Shenzhen 518055, China
| | - Xianbing Zhu
- School of Life Sciences, Tsinghua University , Beijing 100084, China
- Graduate School at Shenzhen, Tsinghua University , Shenzhen 518055, China
| | - Yiling Wang
- School of Life Sciences, Tsinghua University , Beijing 100084, China
- Graduate School at Shenzhen, Tsinghua University , Shenzhen 518055, China
| | - Bingyang Shi
- International Joint Center for Biomedical Innovation, School of Life Sciences, Henan University , Kaifeng, Henan 475004, China
| | - Xiang Ling
- Department of Biomedical Engineering, School of Engineering, Sun Yat-sen University , Guangzhou 510006, China
| | - Houjie Chen
- School of Life Sciences, Tsinghua University , Beijing 100084, China
- Graduate School at Shenzhen, Tsinghua University , Shenzhen 518055, China
| | - Wenhao Nan
- School of Life Sciences, Tsinghua University , Beijing 100084, China
- Graduate School at Shenzhen, Tsinghua University , Shenzhen 518055, China
| | - Austin Barrett
- Brigham and Women's Hospital, Harvard Medical School , Boston, Massachusetts 02115, United States
| | - Zilei Guo
- Brigham and Women's Hospital, Harvard Medical School , Boston, Massachusetts 02115, United States
| | - Wei Tao
- School of Life Sciences, Tsinghua University , Beijing 100084, China
- Graduate School at Shenzhen, Tsinghua University , Shenzhen 518055, China
- Brigham and Women's Hospital, Harvard Medical School , Boston, Massachusetts 02115, United States
| | - Jun Wu
- Department of Biomedical Engineering, School of Engineering, Sun Yat-sen University , Guangzhou 510006, China
| | - Xiaojun Shi
- School of Life Sciences, Tsinghua University , Beijing 100084, China
- Graduate School at Shenzhen, Tsinghua University , Shenzhen 518055, China
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Yamaguchi K, Zhu C, Ohsugi T, Yamaguchi Y, Ikenoue T, Furukawa Y. Bidirectional reporter assay using HAL promoter and TOPFLASH improves specificity in high-throughput screening of Wnt inhibitors. Biotechnol Bioeng 2017; 114:2868-2882. [PMID: 28755500 DOI: 10.1002/bit.26394] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 07/07/2017] [Accepted: 07/23/2017] [Indexed: 12/30/2022]
Abstract
Constitutive activation of Wnt signaling plays an important role in colorectal and liver tumorigenesis. Cell-based assays using synthetic TCF/LEF (T-cell factor/lymphoid enhancer factor) reporters, as readouts of β-catenin/TCF-dependent transcriptional activity, have contributed greatly to the discovery of small molecules that modulate Wnt signaling. In the present study, we report a novel screening method, called a bidirectional dual reporter assay. Integrated transcriptome analysis identified a histidine ammonia-lyase gene (HAL) that was negatively regulated by β-catenin/TCF-dependent transcriptional activity. We leveraged a promoter region of the HAL gene as another transcriptional readout of Wnt signaling. Cells stably expressing both an optimized HAL reporter and the TCF/LEF reporter enabled bidirectional reporter activities in response to Wnt signaling. Increased HAL reporter activity and decreased TCF/LEF reporter activity were observed simultaneously in the cells when β-catenin/TCF7L2 was inhibited. Notably, this method could decrease the number of false positives observed when screening an inhibitor library compared with the conventional TCF/LEF assay. We found that Brefeldin A, a disruptor of the Golgi apparatus, inhibited the Wnt/β-catenin signaling pathway. The utility of our system could be expanded to examine other disease-associated pathways beyond the Wnt/β-catenin signaling pathway.
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Affiliation(s)
- Kiyoshi Yamaguchi
- Division of Clinical Genome Research, Advanced Clinical Research Center, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Chi Zhu
- Division of Clinical Genome Research, Advanced Clinical Research Center, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Tomoyuki Ohsugi
- Division of Clinical Genome Research, Advanced Clinical Research Center, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Yuko Yamaguchi
- Division of Clinical Genome Research, Advanced Clinical Research Center, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Tsuneo Ikenoue
- Division of Clinical Genome Research, Advanced Clinical Research Center, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Yoichi Furukawa
- Division of Clinical Genome Research, Advanced Clinical Research Center, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
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Vacuole-inducing compounds that disrupt endolysosomal trafficking stimulate production of exosomes by glioblastoma cells. Mol Cell Biochem 2017; 439:1-9. [PMID: 28770472 DOI: 10.1007/s11010-017-3130-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 07/26/2017] [Indexed: 12/13/2022]
Abstract
Exosomes are produced from mammalian cells when multivesicular endosomes fuse with the plasma membrane, releasing their intralumenal vesicles. In this study we assessed the effects of MOPIPP, a novel indole-based chalcone, and vacuolin-1, a distinct triazine-based compound, on exosome production in cultured glioblastoma and 293T cells. Both compounds promote vacuolization of late endosome compartments and interfere with trafficking of late endosomes to lysosomes, without significant cytotoxicity. The results show that vacuolated cells treated with these compounds release exosomes with morphologies similar to untreated controls. However, both compounds trigger multi-fold increases in release of exosome marker proteins (e.g., CD63, Alix) in exosome fractions collected from equivalent numbers of cells. Despite the marked increase in exosome production, the profiles of selected miRNA cargoes carried by the exosomes were generally similar in cells treated with the compounds. Insofar as MOPIPP and vacuolin-1 seem able to increase the overall yield of exosomes from cultured cells, they might be useful for efforts to develop exosome-based therapeutics.
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Horn AV, Celic I, Dong C, Martirosyan I, Han JS. A conserved role for the ESCRT membrane budding complex in LINE retrotransposition. PLoS Genet 2017; 13:e1006837. [PMID: 28586350 PMCID: PMC5478143 DOI: 10.1371/journal.pgen.1006837] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Revised: 06/20/2017] [Accepted: 05/23/2017] [Indexed: 11/18/2022] Open
Abstract
Long interspersed nuclear element-1s (LINE-1s, or L1s) are an active family of retrotransposable elements that continue to mutate mammalian genomes. Despite the large contribution of L1 to mammalian genome evolution, we do not know where active L1 particles (particles in the process of retrotransposition) are located in the cell, or how they move towards the nucleus, the site of L1 reverse transcription. Using a yeast model of LINE retrotransposition, we identified ESCRT (endosomal sorting complex required for transport) as a critical complex for LINE retrotransposition, and verified that this interaction is conserved for human L1. ESCRT interacts with L1 via a late domain motif, and this interaction facilitates L1 replication. Loss of the L1/ESCRT interaction does not impair RNP formation or enzymatic activity, but leads to loss of retrotransposition and reduced L1 endonuclease activity in the nucleus. This study highlights the importance of the ESCRT complex in the L1 life cycle and suggests an unusual mode for L1 RNP trafficking. Long interspersed nuclear elements (LINEs) are a class of retrotransposable elements that mutate mammalian genomes. LINEs have been highly successful in the human genome, multiplying to over 800,000 copies. The LINE-encoded replication machinery is also used by other retrotransposons, and in total, has been responsible for the generation of over 1/3 of human DNA sequence. To replicate, a LINE mRNA forms a ribonucleoprotein particle (RNP) with its proteins. This RNP eventually enters the nucleus to integrate a cDNA copy of itself into chromosomes. The events between RNP formation and successful integration are difficult to study and largely unknown. Here we show that the ESCRT complex plays a conserved role in LINE retrotransposition in both yeast and humans. ESCRT is a membrane budding complex involved in cellular trafficking and membrane budding/fusion. Our results imply that membranes play an integral part of LINE replication, and ESCRT may be required for RNP trafficking towards the nucleus.
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Affiliation(s)
- Axel V. Horn
- Department of Biochemistry and Molecular Biology, Tulane University School of Medicine, New Orleans, LA, United States of America
- Department of Embryology, Carnegie Institution for Science, Baltimore, MD, United States of America
| | - Ivana Celic
- Department of Biochemistry and Molecular Biology, Tulane University School of Medicine, New Orleans, LA, United States of America
| | - Chun Dong
- Department of Embryology, Carnegie Institution for Science, Baltimore, MD, United States of America
| | - Irena Martirosyan
- Department of Embryology, Carnegie Institution for Science, Baltimore, MD, United States of America
| | - Jeffrey S. Han
- Department of Biochemistry and Molecular Biology, Tulane University School of Medicine, New Orleans, LA, United States of America
- Department of Embryology, Carnegie Institution for Science, Baltimore, MD, United States of America
- * E-mail:
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Chen C, Lu Y, Siu HM, Guan J, Zhu L, Zhang S, Yue J, Zhang L. Identification of Novel Vacuolin-1 Analogues as Autophagy Inhibitors by Virtual Drug Screening and Chemical Synthesis. Molecules 2017; 22:molecules22060891. [PMID: 28555021 PMCID: PMC6152680 DOI: 10.3390/molecules22060891] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 05/25/2017] [Accepted: 05/25/2017] [Indexed: 12/13/2022] Open
Abstract
Autophagy is a fundamental cellular degradation process which is essential for cell homeostasis, and dysfunctional autophagy has been associated with a variety of human diseases, such as cancer. Several autophagy chemical modulators have been applied in a number of preclinical or clinical trials against these autophagy related diseases, especially cancer. Small molecule vacuolin-1 potently and reversibly inhibits both endosomal-lysosomal trafficking and autophagosome-lysosome fusion, yet the molecular mechanisms underlying vacuolin-1 mediated autophagy inhibition remain unknown. Here, we first performed the virtual drug screening and identified 14 vacuolin-1 analogues as autophagy inhibitors. Based on these virtual screening results, we further designed and synthesized 17 vacuolin-1 analogues, and found that 13 of them are autophagy inhibitors and a couple of them are as potent as vacuolin-1. In summary, these studies expanded the pool of useful autophagy inhibitors and reveal the structural-activity relationship of vacuolin-1 analogues, which is useful for future development of vacuolin-1 analogues with high potency and for identification of the molecular targets of vacuolin-1.
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Affiliation(s)
- Chang Chen
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
| | - Yingying Lu
- City University of Hong Kong Shen Zhen Research Institute, Shenzhen 518057, China.
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong, China.
| | - Ho Ming Siu
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong, China.
| | - Jintao Guan
- City University of Hong Kong Shen Zhen Research Institute, Shenzhen 518057, China.
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong, China.
| | - LongChao Zhu
- City University of Hong Kong Shen Zhen Research Institute, Shenzhen 518057, China.
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong, China.
| | - Shuang Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
| | - Jianbo Yue
- City University of Hong Kong Shen Zhen Research Institute, Shenzhen 518057, China.
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong, China.
| | - Liangren Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
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Greene DL, Kang S, Hoshi N. XE991 and Linopirdine Are State-Dependent Inhibitors for Kv7/KCNQ Channels that Favor Activated Single Subunits. J Pharmacol Exp Ther 2017; 362:177-185. [PMID: 28483800 DOI: 10.1124/jpet.117.241679] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Accepted: 05/05/2017] [Indexed: 01/13/2023] Open
Abstract
M-channel inhibitors, especially XE991, are being used increasingly in animal experiments; however, insufficient characterization of XE991 at times confounds the interpretation of results when using this compound. Here, we demonstrate that XE991 and linopirdine are state-dependent inhibitors that favor the activated-subunit of neuronal Kv7/KCNQ channels. We performed patch-clamp experiments on homomeric Kv7.2 or heteromeric Kv7.2/3 channels expressed in Chinese hamster ovary cells to characterize XE991 and linopirdine. Neither inhibitor was efficacious around the resting membrane potential of cells in physiologic conditions. Inhibition of Kv7.2 and Kv7.2/3 channels by XE991 was closely related with channel activation. When the voltage dependence of activation was left-shifted by retigabine or right-shifted by the mutation, Kv7.2(R214D), the shift in half-activation voltage proportionally coincided with the shift in the half-effective potential for XE991 inhibition. Inhibition kinetics during XE991 wash-in was facilitated at depolarized potentials. Ten-minute washout of XE991 resulted in ∼30% current recovery, most of which was attributed to surface transport of Kv7.2 channels. Linopirdine also exhibited similar inhibition characteristics, with the exception of near- complete current recovery after washout at depolarized potentials. Inhibition kinetics of both XE991 and linopirdine was not as sensitive to changes in voltage as would be predicted by open- channel inhibition. Instead, they were well explained by binding to a single activated subunit. The characteristics of XE991 and linopirdine should be taken into account when these M-channel inhibitors are used in experiments.
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Affiliation(s)
- Derek L Greene
- Department of Pharmacology (D.L.G., S.K., N.H.), Department of Physiology and Biophysics (N.H.), University of California Irvine, Irvine, California
| | - Seungwoo Kang
- Department of Pharmacology (D.L.G., S.K., N.H.), Department of Physiology and Biophysics (N.H.), University of California Irvine, Irvine, California
| | - Naoto Hoshi
- Department of Pharmacology (D.L.G., S.K., N.H.), Department of Physiology and Biophysics (N.H.), University of California Irvine, Irvine, California
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Hara Y, Obata Y, Horikawa K, Tasaki Y, Suzuki K, Murata T, Shiina I, Abe R. M-COPA suppresses endolysosomal Kit-Akt oncogenic signalling through inhibiting the secretory pathway in neoplastic mast cells. PLoS One 2017; 12:e0175514. [PMID: 28403213 PMCID: PMC5389679 DOI: 10.1371/journal.pone.0175514] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Accepted: 03/27/2017] [Indexed: 01/28/2023] Open
Abstract
Gain-of-function mutations in Kit receptor tyrosine kinase result in the development of a variety of cancers, such as mast cell tumours, gastrointestinal stromal tumours (GISTs), acute myeloid leukemia, and melanomas. The drug imatinib, a selective inhibitor of Kit, is used for treatment of mutant Kit-positive cancers. However, mutations in the Kit kinase domain, which are frequently found in neoplastic mast cells, confer an imatinib resistance, and cancers expressing the mutants can proliferate in the presence of imatinib. Recently, we showed that in neoplastic mast cells that endogenously express an imatinib-resistant Kit mutant, Kit causes oncogenic activation of the phosphatidylinositol 3-kinase-Akt (PI3K-Akt) pathway and the signal transducer and activator of transcription 5 (STAT5) but only on endolysosomes and on the endoplasmic reticulum (ER), respectively. Here, we show a strategy for inhibition of the Kit-PI3K-Akt pathway in neoplastic mast cells by M-COPA (2-methylcoprophilinamide), an inhibitor of this secretory pathway. In M-COPA-treated cells, Kit localization in the ER is significantly increased, whereas endolysosomal Kit disappears, indicating that M-COPA blocks the biosynthetic transport of Kit from the ER. The drug greatly inhibits oncogenic Akt activation without affecting the association of Kit with PI3K, indicating that ER-localized Kit-PI3K complex is unable to activate Akt. Importantly, M-COPA but not imatinib suppresses neoplastic mast cell proliferation through inhibiting anti-apoptotic Akt activation. Results of our M-COPA treatment assay show that Kit can activate Erk not only on the ER but also on other compartments. Furthermore, Tyr568/570, Tyr703, Tyr721, and Tyr936 in Kit are phosphorylated on the ER, indicating that these five tyrosine residues are all phosphorylated before mutant Kit reaches the plasma membrane (PM). Our study provides evidence that Kit is tyrosine-phosphorylated soon after synthesis on the ER but is unable to activate Akt and also demonstrates that M-COPA is efficacious for growth suppression of neoplastic mast cells.
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Affiliation(s)
- Yasushi Hara
- Division of Immunobiology, Research Institute for Biomedical Sciences, Tokyo University of Science, Noda, Chiba, Japan
| | - Yuuki Obata
- Division of Immunobiology, Research Institute for Biomedical Sciences, Tokyo University of Science, Noda, Chiba, Japan
- * E-mail:
| | - Keita Horikawa
- Division of Immunobiology, Research Institute for Biomedical Sciences, Tokyo University of Science, Noda, Chiba, Japan
| | - Yasutaka Tasaki
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Shinjuku-ku, Tokyo, Japan
| | - Kyohei Suzuki
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Shinjuku-ku, Tokyo, Japan
| | - Takatsugu Murata
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Shinjuku-ku, Tokyo, Japan
| | - Isamu Shiina
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Shinjuku-ku, Tokyo, Japan
| | - Ryo Abe
- Division of Immunobiology, Research Institute for Biomedical Sciences, Tokyo University of Science, Noda, Chiba, Japan
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The tobacco-specific carcinogen-operated calcium channel promotes lung tumorigenesis via IGF2 exocytosis in lung epithelial cells. Nat Commun 2016; 7:12961. [PMID: 27666821 PMCID: PMC5052689 DOI: 10.1038/ncomms12961] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Accepted: 08/19/2016] [Indexed: 12/20/2022] Open
Abstract
Nicotinic acetylcholine receptors (nAChRs) binding to the tobacco-specific carcinogen 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK) induces Ca2+ signalling, a mechanism that is implicated in various human cancers. In this study, we investigated the role of NNK-mediated Ca2+ signalling in lung cancer formation. We show significant overexpression of insulin-like growth factors (IGFs) in association with IGF-1R activation in human preneoplastic lung lesions in smokers. NNK induces voltage-dependent calcium channel (VDCC)-intervened calcium influx in airway epithelial cells, resulting in a rapid IGF2 secretion via the regulated pathway and thus IGF-1R activation. Silencing nAChR, α1 subunit of L-type VDCC, or various vesicular trafficking curators, including synaptotagmins and Rabs, or blockade of nAChR/VDCC-mediated Ca2+ influx significantly suppresses NNK-induced IGF2 exocytosis, transformation and tumorigenesis of lung epithelial cells. Publicly available database reveals inverse correlation between use of calcium channel blockers and lung cancer diagnosis. Our data indicate that NNK disrupts the regulated pathway of IGF2 exocytosis and promotes lung tumorigenesis. The binding of tobacco-specific carcinogen 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK) to nicotinic acetylcholine receptors (nAChRs) induces calcium signalling. Here the authors show that NKK-induced calcium influx in airway epithelial cells triggers IGF2 secretion and tumourigenesis.
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Evaluation of drug penetration with cationic micelles and their penetration mechanism using an in vitro tumor model. Biomaterials 2016; 98:120-30. [DOI: 10.1016/j.biomaterials.2016.04.037] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Revised: 03/29/2016] [Accepted: 04/28/2016] [Indexed: 01/16/2023]
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50
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Luo JW, Zhang ZR, Gong T, Fu Y. One-step self-assembled nanomicelles for improving the oral bioavailability of nimodipine. Int J Nanomedicine 2016; 11:1051-65. [PMID: 27042060 PMCID: PMC4801194 DOI: 10.2147/ijn.s97834] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Our study aimed to develop a self-assembled nanomicelle for oral administration of nimodipine (NIM) with poor water solubility. Using Solutol(®) HS15, the NIM-loaded self-assembled nanomicelles displayed a near-spherical morphology with a narrow size distribution of 12.57 ± 0.21 nm (polydispersity index =0.071 ± 0.011). Compared with Nimotop(®) (NIM tablets), the intestinal absorption of NIM from NIM nanomicelle in rats was improved by 3.13- and 2.25-fold in duodenum and jejunum at 1 hour after oral administration. The cellular transport of NIM nanomicelle in Caco-2 cell monolayers was significantly enhanced compared to that of Nimotop(®). Regarding the transport pathways, clathrin, lipid raft/caveolae, and macropinocytosis mediated the cell uptake of NIM nanomicelles, while P-glycoprotein and endoplasmic reticulum/Golgi complex (ER/Golgi) pathways were involved in exocytosis. Pharmacokinetic studies in our research laboratory have showed that the area under the plasma concentration-time curve (AUC0-∞) of NIM nanomicelles was 3.72-fold that of Nimotop(®) via oral administration in rats. Moreover, the NIM concentration in the brain from NIM nanomicelles was dramatically improved. Therefore, Solutol(®) HS15-based self-assembled nanomicelles represent a promising delivery system to enhance the oral bioavailability of NIM.
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Affiliation(s)
- Jing-Wen Luo
- Key Laboratory of Drug Targeting and Drug Delivery Systems, Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Zhi-Rong Zhang
- Key Laboratory of Drug Targeting and Drug Delivery Systems, Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Tao Gong
- Key Laboratory of Drug Targeting and Drug Delivery Systems, Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Yao Fu
- Key Laboratory of Drug Targeting and Drug Delivery Systems, Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, People's Republic of China
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