1
|
Bhatnagar A, Chopra U, Raja S, Das KD, Mahalingam S, Chakravortty D, Srinivasula SM. TLR-mediated aggresome-like induced structures comprise antimicrobial peptides and attenuate intracellular bacterial survival. Mol Biol Cell 2024; 35:ar34. [PMID: 38170582 PMCID: PMC10916861 DOI: 10.1091/mbc.e23-09-0347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 12/07/2023] [Accepted: 12/19/2023] [Indexed: 01/05/2024] Open
Abstract
Immune cells employ diverse mechanisms for host defense. Macrophages, in response to TLR activation, assemble aggresome-like induced structures (ALIS). Our group has shown TLR4-signaling transcriptionally upregulates p62/sequestome1, which assembles ALIS. We have demonstrated that TLR4-mediated autophagy is, in fact, selective-autophagy of ALIS. We hypothesize that TLR-mediated autophagy and ALIS contribute to host-defense. Here we show that ALIS are assembled in macrophages upon exposure to different bacteria. These structures are associated with pathogen-containing phagosomes. Importantly, we present evidence of increased bacterial burden, where ALIS assembly is prevented with p62-specific siRNA. We have employed 3D-super-resolution structured illumination microscopy (3D-SR-SIM) and mass-spectrometric (MS) analyses to gain insight into the assembly of ALIS. Ultra-structural analyses of known constituents of ALIS (p62, ubiquitin, LC3) reveal that ALIS are organized structures with distinct patterns of alignment. Furthermore, MS-analyses of ALIS identified, among others, several proteins of known antimicrobial properties. We have validated MS data by testing the association of some of these molecules (Bst2, IFITM2, IFITM3) with ALIS and the phagocytosed-bacteria. We surmise that AMPs enrichment in ALIS leads to their delivery to bacteria-containing phagosomes and restricts the bacteria. Our findings in this paper support hitherto unknown functions of ALIS in host-defense.
Collapse
Affiliation(s)
- Anushree Bhatnagar
- School of Biology, Indian Institute of Science Education and Research Thiruvananthapuram, Maruthamala PO, Vithura, Thiruvananthapuram 695551, Kerala, India
| | - Umesh Chopra
- Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, Karnataka 560012, India
| | - Sebastian Raja
- Laboratory of Molecular Cell Biology, Department of Biotechnology, Indian Institute of Technology-Madras, Chennai 600036, India
| | - Krishanu Dey Das
- School of Biology, Indian Institute of Science Education and Research Thiruvananthapuram, Maruthamala PO, Vithura, Thiruvananthapuram 695551, Kerala, India
| | - S. Mahalingam
- Laboratory of Molecular Cell Biology, Department of Biotechnology, Indian Institute of Technology-Madras, Chennai 600036, India
| | - Dipshikha Chakravortty
- School of Biology, Indian Institute of Science Education and Research Thiruvananthapuram, Maruthamala PO, Vithura, Thiruvananthapuram 695551, Kerala, India
- Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, Karnataka 560012, India
| | - Srinivasa Murty Srinivasula
- School of Biology, Indian Institute of Science Education and Research Thiruvananthapuram, Maruthamala PO, Vithura, Thiruvananthapuram 695551, Kerala, India
| |
Collapse
|
2
|
Adrian M, Weber M, Tsai MC, Glock C, Kahn OI, Phu L, Cheung TK, Meilandt WJ, Rose CM, Hoogenraad CC. Polarized microtubule remodeling transforms the morphology of reactive microglia and drives cytokine release. Nat Commun 2023; 14:6322. [PMID: 37813836 PMCID: PMC10562429 DOI: 10.1038/s41467-023-41891-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 09/19/2023] [Indexed: 10/11/2023] Open
Abstract
Microglial reactivity is a pathological hallmark in many neurodegenerative diseases. During stimulation, microglia undergo complex morphological changes, including loss of their characteristic ramified morphology, which is routinely used to detect and quantify inflammation in the brain. However, the underlying molecular mechanisms and the relation between microglial morphology and their pathophysiological function are unknown. Here, proteomic profiling of lipopolysaccharide (LPS)-reactive microglia identifies microtubule remodeling pathways as an early factor that drives the morphological change and subsequently controls cytokine responses. We find that LPS-reactive microglia reorganize their microtubules to form a stable and centrosomally-anchored array to facilitate efficient cytokine trafficking and release. We identify cyclin-dependent kinase 1 (Cdk-1) as a critical upstream regulator of microtubule remodeling and morphological change in-vitro and in-situ. Cdk-1 inhibition also rescues tau and amyloid fibril-induced morphology changes. These results demonstrate a critical role for microtubule dynamics and reorganization in microglial reactivity and modulating cytokine-mediated inflammatory responses.
Collapse
Affiliation(s)
- Max Adrian
- Department of Neuroscience, Genentech, Inc., South San Francisco, CA, 94080, USA
- Department of Pathology, Genentech, Inc., South San Francisco, CA, 94080, USA
| | - Martin Weber
- Department of Neuroscience, Genentech, Inc., South San Francisco, CA, 94080, USA
| | - Ming-Chi Tsai
- Department of Neuroscience, Genentech, Inc., South San Francisco, CA, 94080, USA
| | - Caspar Glock
- Department of OMNI Bioinformatics, Genentech Inc., South San Francisco, CA, 94080, USA
| | - Olga I Kahn
- Department of Neuroscience, Genentech, Inc., South San Francisco, CA, 94080, USA
| | - Lilian Phu
- Department of Microchemistry, Proteomics and Lipidomics, South San Francisco, CA, 94080, USA
| | - Tommy K Cheung
- Department of Microchemistry, Proteomics and Lipidomics, South San Francisco, CA, 94080, USA
| | - William J Meilandt
- Department of Neuroscience, Genentech, Inc., South San Francisco, CA, 94080, USA
| | - Christopher M Rose
- Department of Microchemistry, Proteomics and Lipidomics, South San Francisco, CA, 94080, USA
| | - Casper C Hoogenraad
- Department of Neuroscience, Genentech, Inc., South San Francisco, CA, 94080, USA.
| |
Collapse
|
3
|
Tirado-Gonzalez I, Descot A, Soetopo D, Nevmerzhitskaya A, Schaffer A, Kur IM, Czlonka E, Wachtel C, Tsoukala I, Muller L, Schafer AL, Weitmann M, Dinse P, Alberto E, Buck MC, Landry JJM, Baying B, Slotta-Huspenina J, Roesler J, Harter PN, Kubasch AS, Meinel J, Elwakeel E, Strack E, Tran Quang C, Abdel-Wahab O, Schmitz M, Weigert A, Schmid T, Platzbecker U, Benes V, Ghysdael J, Bonig H, Gotze KS, Rothlin CV, Ghosh S, Medyouf H. AXL inhibition in macrophages stimulates host-versus-leukemia immunity and eradicates naive and treatment resistant leukemia. Cancer Discov 2021; 11:2924-2943. [PMID: 34103328 DOI: 10.1158/2159-8290.cd-20-1378] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 05/04/2021] [Accepted: 06/04/2021] [Indexed: 11/16/2022]
Abstract
Acute leukemias are systemic malignancies associated with a dire outcome. Due to low immunogenicity, leukemias display a remarkable ability to evade immune control and are often resistant to checkpoint blockade. Here, we discover that leukemia cells actively establish a suppressive environment to prevent immune attacks by co-opting a signaling axis that skews macrophages towards a tumor promoting tissue repair phenotype, namely the GAS6/AXL axis. Using aggressive leukemia models, we demonstrate that ablation of the AXL receptor specifically in macrophages, or its ligand GAS6 in the environment, stimulates anti-leukemic immunity and elicits effective and lasting NK- and T-cell dependent immune response against naive and treatment resistant leukemia. Remarkably, AXL deficiency in macrophages also enables PD1 checkpoint blockade in PD1-refractory leukemias. Lastly, we provide proof-of-concept that a clinical grade AXL inhibitor can be used in combination with standard of care therapy to cure established leukemia, regardless on AXL expression in malignant cells.
Collapse
Affiliation(s)
| | - Arnaud Descot
- Cell Biology and Tumor Biology Program, German Cancer Research Center
| | | | | | | | | | | | | | | | - Luise Muller
- Institute of Immunology, Medical Faculty, TU Dresden
| | | | | | | | | | - Michele C Buck
- Department of Medicine III, Klinikum rechts der Isar, Technische Universität München (TUM)
| | | | | | | | - Jenny Roesler
- Institute of Neurology (Edinger Institute), Goethe-University
| | | | - Anne-Sophie Kubasch
- Department of Hematology, Cellular Therapy and Hemostaseology, University Hospital Leipzig
| | - Jörn Meinel
- Department of Pathology, University of Cologne
| | | | | | | | | | - Marc Schmitz
- Institute of Immunology, Medical Faculty, TU Dresden
| | | | - Tobias Schmid
- Institute of Biochemistry I, Goethe University Frankfurt
| | - Uwe Platzbecker
- Med. Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus
| | - Vladimir Benes
- GeneCore, European Molecular Biology Laboratory, Heidelberg, Germany, Genomics Core Facility
| | | | - Halvard Bonig
- Medicine/Transfusion Medicine and Immunohematology, Goethe University
| | - Katharina S Gotze
- Department of Medicine III, Klinikum rechts der Isar, Technische Universität München (TUM)
| | | | | | | |
Collapse
|
4
|
Fu YL, Harrison RE. Microbial Phagocytic Receptors and Their Potential Involvement in Cytokine Induction in Macrophages. Front Immunol 2021; 12:662063. [PMID: 33995386 PMCID: PMC8117099 DOI: 10.3389/fimmu.2021.662063] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 03/30/2021] [Indexed: 11/13/2022] Open
Abstract
Phagocytosis is an essential process for the uptake of large (>0.5 µm) particulate matter including microbes and dying cells. Specialized cells in the body perform phagocytosis which is enabled by cell surface receptors that recognize and bind target cells. Professional phagocytes play a prominent role in innate immunity and include macrophages, neutrophils and dendritic cells. These cells display a repertoire of phagocytic receptors that engage the target cells directly, or indirectly via opsonins, to mediate binding and internalization of the target into a phagosome. Phagosome maturation then proceeds to cause destruction and recycling of the phagosome contents. Key subsequent events include antigen presentation and cytokine production to alert and recruit cells involved in the adaptive immune response. Bridging the innate and adaptive immunity, macrophages secrete a broad selection of inflammatory mediators to orchestrate the type and magnitude of an inflammatory response. This review will focus on cytokines produced by NF-κB signaling which is activated by extracellular ligands and serves a master regulator of the inflammatory response to microbes. Macrophages secrete pro-inflammatory cytokines including TNFα, IL1β, IL6, IL8 and IL12 which together increases vascular permeability and promotes recruitment of other immune cells. The major anti-inflammatory cytokines produced by macrophages include IL10 and TGFβ which act to suppress inflammatory gene expression in macrophages and other immune cells. Typically, macrophage cytokines are synthesized, trafficked intracellularly and released in response to activation of pattern recognition receptors (PRRs) or inflammasomes. Direct evidence linking the event of phagocytosis to cytokine production in macrophages is lacking. This review will focus on cytokine output after engagement of macrophage phagocytic receptors by particulate microbial targets. Microbial receptors include the PRRs: Toll-like receptors (TLRs), scavenger receptors (SRs), C-type lectin and the opsonic receptors. Our current understanding of how macrophage receptor stimulation impacts cytokine production is largely based on work utilizing soluble ligands that are destined for endocytosis. We will instead focus this review on research examining receptor ligation during uptake of particulate microbes and how this complex internalization process may influence inflammatory cytokine production in macrophages.
Collapse
Affiliation(s)
- Yan Lin Fu
- Department of Cell & Systems Biology, University of Toronto, Toronto, ON, Canada
- Department of Biological Sciences, University of Toronto Scarborough, Toronto, ON, Canada
| | - Rene E. Harrison
- Department of Cell & Systems Biology, University of Toronto, Toronto, ON, Canada
- Department of Biological Sciences, University of Toronto Scarborough, Toronto, ON, Canada
| |
Collapse
|
5
|
Zong H, Hazelbaker M, Moe C, Ems-McClung SC, Hu K, Walczak CE. Spatial regulation of MCAK promotes cell polarization and focal adhesion turnover to drive robust cell migration. Mol Biol Cell 2021; 32:590-604. [PMID: 33566676 PMCID: PMC8101467 DOI: 10.1091/mbc.e20-05-0301] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
The asymmetric distribution of microtubule (MT) dynamics in migrating cells is important for cell polarization, yet the underlying regulatory mechanisms remain underexplored. Here, we addressed this question by studying the role of the MT depolymerase, MCAK (mitotic centromere-associated kinesin), in the highly persistent migration of RPE-1 cells. MCAK knockdown leads to slowed migration and poor directional movement. Fixed and live cell imaging revealed that MCAK knockdown results in excessive membrane ruffling as well as defects in cell polarization and the maintenance of a major protrusive front. Additionally, loss of MCAK increases the lifetime of focal adhesions by decreasing their disassembly rate. These functions correlate with a spatial distribution of MCAK activity, wherein activity is higher in the trailing edge of cells compared with the leading edge. Overexpression of Rac1 has a dominant effect over MCAK activity, placing it downstream of or in a parallel pathway to MCAK function in migration. Together, our data support a model in which the polarized distribution of MCAK activity and subsequent differential regulation of MT dynamics contribute to cell polarity, centrosome positioning, and focal adhesion dynamics, which all help facilitate robust directional migration.
Collapse
Affiliation(s)
- Hailing Zong
- Department of Biology, Indiana University, Bloomington, IN 47405
| | - Mark Hazelbaker
- Medical Sciences, Indiana University School of Medicine-Bloomington, Bloomington, IN 47405
| | - Christina Moe
- Department of Biology, Indiana University, Bloomington, IN 47405
| | | | - Ke Hu
- Department of Biology, Indiana University, Bloomington, IN 47405
| | - Claire E Walczak
- Medical Sciences, Indiana University School of Medicine-Bloomington, Bloomington, IN 47405
| |
Collapse
|
6
|
Xie W, Chen M, Zhai Z, Li H, Song T, Zhu Y, Dong D, Zhou P, Duan L, Zhang Y, Li D, Liu X, Zhou J, Liu M. HIV-1 exposure promotes PKG1-mediated phosphorylation and degradation of stathmin to increase epithelial barrier permeability. J Biol Chem 2021; 296:100644. [PMID: 33839152 PMCID: PMC8105298 DOI: 10.1016/j.jbc.2021.100644] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 03/29/2021] [Accepted: 04/05/2021] [Indexed: 01/11/2023] Open
Abstract
Exposure of mucosal epithelial cells to the human immunodeficiency virus type 1 (HIV-1) envelope glycoprotein gp120 is known to disrupt epithelial cell junctions by impairing stathmin-mediated microtubule depolymerization. However, the pathological significance of this process and its underlying molecular mechanism remain unclear. Here we show that treatment of epithelial cells with pseudotyped HIV-1 viral particles or recombinant gp120 protein results in the activation of protein kinase G 1 (PKG1). Examination of epithelial cells by immunofluorescence microscopy reveals that PKG1 activation mediates the epithelial barrier damage upon HIV-1 exposure. Immunoprecipitation experiments show that PKG1 interacts with stathmin and phosphorylates stathmin at serine 63 in the presence of gp120. Immunoprecipitation and immunofluorescence microscopy further demonstrate that PKG1-mediated phosphorylation of stathmin promotes its autophagic degradation by enhancing the interaction between stathmin and the autophagy adaptor protein p62. Collectively, these results suggest that HIV-1 exposure exploits the PKG1/stathmin axis to affect the microtubule cytoskeleton and thereby perturbs epithelial cell junctions. Our findings reveal a novel molecular mechanism by which exposure to HIV-1 increases epithelial permeability, which has implications for the development of effective strategies to prevent mucosal HIV-1 transmission.
Collapse
Affiliation(s)
- Wei Xie
- Shandong Provincial Key Laboratory of Animal Resistance Biology, Collaborative Innovation Center of Cell Biology in Universities of Shandong, Institute of Biomedical Sciences, College of Life Sciences, Shandong Normal University, Jinan, Shandong, China
| | - Mingzhen Chen
- Shandong Provincial Key Laboratory of Animal Resistance Biology, Collaborative Innovation Center of Cell Biology in Universities of Shandong, Institute of Biomedical Sciences, College of Life Sciences, Shandong Normal University, Jinan, Shandong, China
| | - Zhaodong Zhai
- Shandong Provincial Key Laboratory of Animal Resistance Biology, Collaborative Innovation Center of Cell Biology in Universities of Shandong, Institute of Biomedical Sciences, College of Life Sciences, Shandong Normal University, Jinan, Shandong, China
| | - Hongjie Li
- Shandong Provincial Key Laboratory of Animal Resistance Biology, Collaborative Innovation Center of Cell Biology in Universities of Shandong, Institute of Biomedical Sciences, College of Life Sciences, Shandong Normal University, Jinan, Shandong, China
| | - Ting Song
- Shandong Provincial Key Laboratory of Animal Resistance Biology, Collaborative Innovation Center of Cell Biology in Universities of Shandong, Institute of Biomedical Sciences, College of Life Sciences, Shandong Normal University, Jinan, Shandong, China
| | - Yigao Zhu
- Shandong Provincial Key Laboratory of Animal Resistance Biology, Collaborative Innovation Center of Cell Biology in Universities of Shandong, Institute of Biomedical Sciences, College of Life Sciences, Shandong Normal University, Jinan, Shandong, China
| | - Dan Dong
- Shandong Provincial Key Laboratory of Animal Resistance Biology, Collaborative Innovation Center of Cell Biology in Universities of Shandong, Institute of Biomedical Sciences, College of Life Sciences, Shandong Normal University, Jinan, Shandong, China
| | - Peng Zhou
- Shandong Provincial Key Laboratory of Animal Resistance Biology, Collaborative Innovation Center of Cell Biology in Universities of Shandong, Institute of Biomedical Sciences, College of Life Sciences, Shandong Normal University, Jinan, Shandong, China
| | - Liangwei Duan
- State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin, China
| | - You Zhang
- State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin, China
| | - Dengwen Li
- State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin, China
| | - Xinqi Liu
- State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin, China
| | - Jun Zhou
- Shandong Provincial Key Laboratory of Animal Resistance Biology, Collaborative Innovation Center of Cell Biology in Universities of Shandong, Institute of Biomedical Sciences, College of Life Sciences, Shandong Normal University, Jinan, Shandong, China; State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin, China.
| | - Min Liu
- Shandong Provincial Key Laboratory of Animal Resistance Biology, Collaborative Innovation Center of Cell Biology in Universities of Shandong, Institute of Biomedical Sciences, College of Life Sciences, Shandong Normal University, Jinan, Shandong, China.
| |
Collapse
|
7
|
Shan W, Han F, Xu Y, Shi Y. Stathmin Regulates Spatiotemporal Variation in the Memory Loop in Single-Prolonged Stress Rats. J Mol Neurosci 2020; 70:576-589. [PMID: 31933182 DOI: 10.1007/s12031-019-01459-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 11/29/2019] [Indexed: 12/29/2022]
Abstract
Posttraumatic stress disorder (PTSD) is closely related to brain structures of the memory loop such as the hippocampus, amygdala, and medial prefrontal cortex (mPFC). The fear gene stathmin plays an important role in regulating fear memory. However, whether the fear gene stathmin is related to fear memory loop anomalies caused by PTSD is unclear. A single-prolonged stress (SPS) rat model of PTSD was constructed. Wistar rats were randomly divided into 5 groups: the control group, SPS 1-day group, SPS 4-day group, SPS 7-day group, and SPS 14-day group. Then, we measured the protein and mRNA expression of stathmin, p-stathmin (Ser16, Ser25, Ser38, and Ser63), β-tubulin, and MAP-1B in the hippocampus, amygdala, and mPFC in the 5 groups by immunohistochemistry, Western blotting, and qRT-PCR. The expression of the stathmin protein in the hippocampus, mPFC, and amygdala of the rat memory loop decreased gradually in the SPS 1-day group, the SPS 4-day group, and the SPS 7-day group, in which it was the lowest, and then increased. The trend of the expression of stathmin mRNA in the three areas of the memory loop was consistent with the trend of the expression of the stathmin protein. The trend of the protein expression of p-stathmin (Ser25 and Ser38) was opposite of that of stathmin; it reached a peak on the 7th day, and then decreased in the hippocampus. The protein expression of p-stathmin (Ser63) showed the same trend in the mPFC. The protein and mRNA expression of β-tubulin and MAP-1B was consistent with that of p-stathmin; it reached a peak on the 7th day, and then decreased in the rat hippocampus, mPFC, and amygdala. Stathmin in the memory loop, especially in the hippocampus, regulates microtubule structure through its phosphorylation at Ser25 and Ser38 and thereby participates in the mediation of fear memory abnormalities in PTSD.
Collapse
Affiliation(s)
- Wei Shan
- PTSD Laboratory, Department of Histology and Embryology, Basic Medical Sciences College, China Medical University, 77, Puhe Road, Shengbei New District, Shenyang, 110001, People's Republic of China.,Department of Human Anatomy, School of Basic Medical Sciences, Jinzhou Medical University, Jinzhou, People's Republic of China
| | - Fang Han
- PTSD Laboratory, Department of Histology and Embryology, Basic Medical Sciences College, China Medical University, 77, Puhe Road, Shengbei New District, Shenyang, 110001, People's Republic of China
| | - Yanhao Xu
- PTSD Laboratory, Department of Histology and Embryology, Basic Medical Sciences College, China Medical University, 77, Puhe Road, Shengbei New District, Shenyang, 110001, People's Republic of China.
| | - Yuxiu Shi
- PTSD Laboratory, Department of Histology and Embryology, Basic Medical Sciences College, China Medical University, 77, Puhe Road, Shengbei New District, Shenyang, 110001, People's Republic of China.
| |
Collapse
|
8
|
Mandarino A, Gregory DJ, McGuire CC, Leblanc BW, Witt H, Rivera LM, Godleski JJ, Fedulov AV. The effect of talc particles on phagocytes in co-culture with ovarian cancer cells. ENVIRONMENTAL RESEARCH 2020; 180:108676. [PMID: 31785414 PMCID: PMC8722446 DOI: 10.1016/j.envres.2019.108676] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Revised: 07/15/2019] [Accepted: 08/15/2019] [Indexed: 05/11/2023]
Abstract
Talc and titanium dioxide are naturally occurring water-insoluble mined products usually available in the form of particulate matter. This study was prompted by epidemiological observations suggesting that perineal use of talc powder is associated with increased risk of ovarian cancer, particularly in a milieu with higher estrogen. We aimed to test the effects of talc vs. control particles on the ability of prototypical macrophage cell lines to curb the growth of ovarian cancer cells in culture in the presence of estrogen. We found that murine ovarian surface epithelial cells (MOSEC), a prototype of certain forms of ovarian cancer, were present in larger numbers after co-culture with macrophages treated to a combination of talc and estradiol than to either agent alone or vehicle. Control particles (titanium dioxide, concentrated urban air particulates or diesel exhaust particles) did not have this effect. Co-exposure of macrophages to talc and estradiol has led to increased production of reactive oxygen species and changes in expression of macrophage genes pertinent in cancer development and immunosurveillance. These findings suggest that in vitro exposure to talc, particularly in a high-estrogen environment, may compromise immunosurveillance functions of macrophages and prompt further studies to elucidate this mechanism.
Collapse
Affiliation(s)
- Angelo Mandarino
- Alpert Medical School of Brown University, Department of Surgery, Division of Surgical Research, Rhode Island Hospital, Providence, RI, USA
| | - David J Gregory
- Harvard Medical School, Massachusetts General Hospital, Department of Pediatrics, Boston, MA, USA
| | - Connor C McGuire
- University of Rochester Medical Center, Department of Environmental Medicine, Rochester, NY, USA
| | - Brian W Leblanc
- Alpert Medical School of Brown University, Department of Surgery, Division of Surgical Research, Rhode Island Hospital, Providence, RI, USA
| | - Hadley Witt
- Alpert Medical School of Brown University, Department of Surgery, Division of Surgical Research, Rhode Island Hospital, Providence, RI, USA
| | - Loreilys Mejias Rivera
- Alpert Medical School of Brown University, Department of Surgery, Division of Surgical Research, Rhode Island Hospital, Providence, RI, USA
| | - John J Godleski
- John J. Godleski, MD, PLLC, Milton, MA, USA; Harvard Medical School, Department of Pathology (Emeritus), Boston, MA, USA; Department of Environmental Health, Harvard TH Chan School of Public Health (Retired), Boston, MA, USA
| | - Alexey V Fedulov
- Alpert Medical School of Brown University, Department of Surgery, Division of Surgical Research, Rhode Island Hospital, Providence, RI, USA; Department of Environmental Health, Harvard TH Chan School of Public Health (Retired), Boston, MA, USA.
| |
Collapse
|
9
|
Mohammed AZ, Du HX, Song HL, Gong WM, Ning B, Jia TH. Comparative proteomes change and possible role in different pathways of microRNA-21a-5p in a mouse model of spinal cord injury. Neural Regen Res 2020; 15:1102-1110. [PMID: 31823891 PMCID: PMC7034281 DOI: 10.4103/1673-5374.270418] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Our previous study found that microRNA-21a-5p (miR-21a-5p) knockdown could improve the recovery of motor function after spinal cord injury in a mouse model, but the precise molecular mechanism remains poorly understood. In this study, a modified Allen's weight drop was used to establish a mouse model of spinal cord injury. A proteomics approach was used to understand the role of differential protein expression with miR-21a-5p knockdown, using a mouse model of spinal cord injury without gene knockout as a negative control group. We found that after introducing miR-21a-5p knockdown, proteins that played an essential role in the regulation of inflammatory processes, cell protection against oxidative stress, cell redox homeostasis, and cell maintenance were upregulated compared with the negative control group. Kyoto Encyclopedia of Genes and Genomes pathway enrichment analysis identified enriched pathways in both groups, such as the oxidative phosphorylation pathway, which is relevant to Parkinson's disease, Huntington's disease, Alzheimer's disease, and cardiac muscle contraction. We also found that miR-21a-5p could be a potential biomarker for amyotrophic lateral sclerosis, as miR-21a-5p becomes deregulated in this pathway. These results indicate successful detection of some important proteins that play potential roles in spinal cord injury. Elucidating the relationship between these proteins and the recovery of spinal cord injury will provide a reference for future research of spinal cord injury biomarkers. All experimental procedures and protocols were approved by the Experimental Animal Ethics Committee of Shandong University of China on March 5, 2014.
Collapse
Affiliation(s)
- Almaghalsa-Ziad Mohammed
- Department of Spinal Surgery, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong Province, China
| | - Hong-Xia Du
- Department of Spinal Surgery, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong Province, China
| | - Hong-Liang Song
- Department of Spinal Surgery, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong Province, China
| | - Wei-Ming Gong
- Department of Spinal Surgery, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong Province, China
| | - Bin Ning
- Department of Spinal Surgery, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong Province, China
| | - Tang-Hong Jia
- Department of Spinal Surgery, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong Province, China
| |
Collapse
|
10
|
Peripheral blood mononuclear cell proteome profile in Behçet's syndrome. Rheumatol Int 2019; 40:65-74. [PMID: 31414226 DOI: 10.1007/s00296-019-04417-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 08/08/2019] [Indexed: 10/26/2022]
Abstract
Behçet's syndrome (BS) is a systemic inflammatory disorder with unknown etiology. Investigation of proteome profiles of disease specific cells facilitates our understanding of the processes and related molecular pathways, especially in disorders like BS with complex inheritance pattern and clinical heterogeneity. In the current study, we evaluated the peripheral blood mononuclear cells (PBMCs) proteome of 59 patients with BS (33 in active and 26 in inactive phases) and of 28 healthy controls using two-dimensional fluorescence difference gel electrophoresis (2D-DIGE). Differentially expressed protein spots with at least twofold and/or statistically significant change (p ≤ 0.05) between active BS vs inactive BS, and also active BS vs healthy controls were identified by mass spectrometry (MALDI-TOF/TOF). Bioinformatic analyses revealed 16 differentially expressed proteins (12 of them in active vs inactive BS comparison, whereas 11 of them for active BS vs healthy control comparison) belonging to glycolysis, cytoskeleton organization, protein folding, and regulation of blood coagulation pathways. Stathmin (active BS vs inactive BS; fourfold, active BS vs healthy control; 4.7-fold) and WD repeat-containing protein-1 (active BS vs inactive BS; 2.7-fold, active BS vs healthy control; 2.7-fold), which are cytoskeleton-related proteins, were found to be lower in active patients compared to inactive patients and healthy control. Decreased levels of calreticulin (active BS vs inactive BS; 1.29-fold) and heat shock 70 kDa protein 8 (active BS vs healthy control; 1.5-fold) which are involved in protein folding and endoplasmic reticulum (ER) stress process, were observed in patients with active phase of BS. Down-regulation of protein folding and ER stress process proteins in BS patients may further support the involvement of ER stress in BS.
Collapse
|
11
|
Ilan-Ber T, Ilan Y. The role of microtubules in the immune system and as potential targets for gut-based immunotherapy. Mol Immunol 2019; 111:73-82. [DOI: 10.1016/j.molimm.2019.04.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 04/11/2019] [Accepted: 04/23/2019] [Indexed: 12/18/2022]
|
12
|
Lu NT, Liu NM, Patel D, Vu JQ, Liu L, Kim CY, Cho P, Khachatoorian R, Patel N, Magyar CE, Ganapathy E, Arumugaswami V, Dasgupta A, French SW. Oncoprotein Stathmin Modulates Sensitivity to Apoptosis in Hepatocellular Carcinoma Cells During Hepatitis C Viral Replication. J Cell Death 2018; 11:1179066018785141. [PMID: 30034249 PMCID: PMC6047100 DOI: 10.1177/1179066018785141] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 05/28/2018] [Indexed: 01/28/2023] Open
Abstract
Patients with chronic hepatitis C virus (HCV) infection risk complications of
cirrhosis, liver failure, and hepatocellular carcinoma (HCC). Previously, our
proteomic examination of hepatocytes carrying a HCV-replicon revealed that
deregulation of cytoskeletal dynamics may be a potential mechanism of
viral-induced HCC growth. Here, we demonstrate the effect of HCV replication on
the microtubule regulator stathmin (STMN1) in HCC cells. We further explore how
the altered activity or synthesis of stathmin affects cellular proliferation and
sensitivity to apoptosis in control HCC cells (Huh7.5) and experimental
HCV-replicon harboring HCC cells (R-Huh7.5). The HCV-replicon harboring HCC
cells (R-Huh 7.5) lack viral structural genes/proteins for acute infectivity and
thus is the standard model for in vitro chronic infection study. Knockdown of
endogenous stathmin reduced sensitivity to apoptosis in replicon cells.
Meanwhile, constitutively active stathmin increased sensitivity to apoptosis in
replicon cells. In addition, overexpression of constitutively active stathmin
reduced cell proliferation in both control and replicon cells. These findings
implicate, for the first time, a novel role for stathmin in viral
replication–related apoptosis. Stathmin’s potential role in HCV replication and
HCC make it a candidate for the future study of viral-induced malignancies.
Collapse
Affiliation(s)
- Nu T Lu
- Department of Pathology & Laboratory Medicine, University of California, Los Angeles (UCLA), Los Angeles, CA, USA.,Department of Hematology and Oncology, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
| | - Natalie M Liu
- Department of Pathology & Laboratory Medicine, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
| | - Darshil Patel
- Department of Pathology & Laboratory Medicine, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
| | - James Q Vu
- Department of Pathology & Laboratory Medicine, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
| | - Lisa Liu
- Department of Pathology & Laboratory Medicine, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
| | - Chae Yeon Kim
- Department of Pathology & Laboratory Medicine, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
| | - Peter Cho
- Department of Pathology & Laboratory Medicine, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
| | - Ronik Khachatoorian
- Department of Pathology & Laboratory Medicine, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
| | - Nikita Patel
- Department of Pathology & Laboratory Medicine, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
| | - Clara E Magyar
- Department of Pathology & Laboratory Medicine, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
| | - Ekambaram Ganapathy
- Department of Pathology & Laboratory Medicine, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
| | - Vaithilingaraja Arumugaswami
- Department of Surgery, David Geffen School of Medicine, University of California, Los Angeles (UCLA), Los Angeles, CA, USA.,Department of Surgery and Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Asim Dasgupta
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
| | - Samuel Wheeler French
- Department of Pathology & Laboratory Medicine, University of California, Los Angeles (UCLA), Los Angeles, CA, USA.,UCLA Jonsson Comprehensive Cancer Center, Los Angeles, CA, USA
| |
Collapse
|
13
|
Herrera-Uribe J, Zaldívar-López S, Aguilar C, Luque C, Bautista R, Carvajal A, Claros MG, Garrido JJ. Regulatory role of microRNA in mesenteric lymph nodes after Salmonella Typhimurium infection. Vet Res 2018; 49:9. [PMID: 29391047 PMCID: PMC5796392 DOI: 10.1186/s13567-018-0506-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 11/23/2017] [Indexed: 12/14/2022] Open
Abstract
Salmonellosis is a gastrointestinal disease caused by non-typhoidal Salmonella serovars such as Salmonella Typhimurium. This pathology is a zoonosis, and food animals with subclinical infection constitute a vast reservoir for disease. After intestinal colonization, Salmonella Typhimurium reaches mesenteric lymph nodes (MLN), where infection is controlled avoiding systemic spread. Although the molecular basis of this infection has been extensively studied, little is known about how microRNA (miRNA) regulate the expression of proteins involved in the Salmonella-host interaction. Using small RNA-seq, we examined expression profiles of MLN 2 days after infection with Salmonella Typhimurium, and we found 110 dysregulated miRNA. Among them, we found upregulated miR-21, miR-155, miR-150, and miR-221, as well as downregulated miR-143 and miR-125, all of them previously linked to other bacterial infections. Integration with proteomic data revealed 30 miRNA potentially regulating the expression of 15 proteins involved in biological functions such as cell death and survival, inflammatory response and antigenic presentation. The inflammatory response was found increased via upregulation of miRNA such as miR-21 and miR-155. Downregulation of miR-125a/b, miR-148 and miR-1 were identified as potential regulators of MHC-class I components PSMB8, HSP90B1 and PDIA3, respectively. Furthermore, we confirmed that miR-125a is a direct target of immunoproteasome component PSMB8. Since we also found miR-130 downregulation, which is associated with upregulation of HSPA8, we suggest induction of both MHC-I and MHC-II antigen presentation pathways. In conclusion, our study identifies miRNA that could regulate critical networks for antigenic presentation, inflammatory response and cytoskeletal rearrangements.
Collapse
Affiliation(s)
- Juber Herrera-Uribe
- Grupo de Genómica y Mejora Animal, Departamento de Genética, Facultad de Veterinaria, Universidad de Córdoba, 14047, Córdoba, Spain
| | - Sara Zaldívar-López
- Grupo de Genómica y Mejora Animal, Departamento de Genética, Facultad de Veterinaria, Universidad de Córdoba, 14047, Córdoba, Spain.
| | - Carmen Aguilar
- Grupo de Genómica y Mejora Animal, Departamento de Genética, Facultad de Veterinaria, Universidad de Córdoba, 14047, Córdoba, Spain.,Institute for Molecular Infection Biology, University of Würzburg, Würzburg, Germany
| | - Cristina Luque
- Grupo de Genómica y Mejora Animal, Departamento de Genética, Facultad de Veterinaria, Universidad de Córdoba, 14047, Córdoba, Spain
| | - Rocío Bautista
- Plataforma Andaluza de Bioinformática, Universidad de Málaga, 29590, Málaga, Spain
| | - Ana Carvajal
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad de León, 24071, León, Spain
| | - M Gonzalo Claros
- Plataforma Andaluza de Bioinformática, Universidad de Málaga, 29590, Málaga, Spain.,Departamento de Biología Molecular y Bioquímica, Universidad de Málaga, 29071, Málaga, Spain
| | - Juan J Garrido
- Grupo de Genómica y Mejora Animal, Departamento de Genética, Facultad de Veterinaria, Universidad de Córdoba, 14047, Córdoba, Spain
| |
Collapse
|
14
|
Sun Q, Ying M, Ma Q, Huang Z, Zou L, Liu J, Zhuang Z, Yang X. Proteomic analysis of hippocampus in mice following long-term exposure to low levels of copper. Toxicol Res (Camb) 2016; 5:1130-1139. [PMID: 30090419 DOI: 10.1039/c5tx00456j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Accepted: 04/24/2016] [Indexed: 11/21/2022] Open
Abstract
Recent studies suggest that copper exposure, even at very low levels, can produce significant toxic effects on the brains of mice. This study is aimed to explore the effects of low levels of copper on the hippocampal proteome of mice. Two-dimensional fluorescence difference gel electrophoresis was performed on hippocampal homogenate obtained from mice, which were given either drinking water only (control) or water supplemented with 0.13 ppm copper (copper-treated) for a period of 8 months beginning at an age of 3 months. A total of 9 differentially expressed proteins between copper-treated mice and control mice were identified. Protein functional analysis revealed that the altered proteins mainly involved energy metabolism-related proteins, synaptic proteins, molecular chaperones and cellular structural components. Among these differentially expressed proteins, serine racemase (SRR) and glial fibrillary acidic protein (GFAP) were significantly down-regulated and up-regulated, respectively, in the hippocampus of copper-treated mice compared with the control mice. SRR was shown to be involved in memory formation. The increased expression of GFAP, an astrocyte marker, indicated that long-term low levels of copper exposure caused activation of the inflammatory response, a process linked to spatial memory impairment. In agreement with the data from proteomic analysis, memory impairment was observed in copper-treated mice as measured by the Morris water maze test. In summary, this study has identified a number of abnormally expressed proteins in the hippocampus of copper-treated mice, and the identified protein, such as SRR, together with inflammatory responses, as evidenced by the increased expression of GFAP, could contribute to memory impairment resulting from copper exposure. Our findings provide insights for a better understanding of copper neurotoxicity at the protein level in response to low levels of copper exposure.
Collapse
Affiliation(s)
- Qian Sun
- Key Laboratory of Modern Toxicology of Shenzhen , Shenzhen Center for Disease Control and Prevention , No. 8 , Longyuan Road , Nanshan District , Shenzhen , 518055 , China . ; ; Tel: +86 755 25601914
| | - Ming Ying
- College of Life Sciences , Shenzhen University , Shenzhen 518060 , China
| | - Quan Ma
- Key Laboratory of Modern Toxicology of Shenzhen , Shenzhen Center for Disease Control and Prevention , No. 8 , Longyuan Road , Nanshan District , Shenzhen , 518055 , China . ; ; Tel: +86 755 25601914
| | - Zhijun Huang
- The Emergency Department , Second Clinical Medical College (Shenzhen People's Hospital) , Jinan University , Shenzhen 518020 , China
| | - Liangyu Zou
- Department of Neurology , Shenzhen People's Hospital , Second Clinical College , Jinan University , Shenzhen , 518020 , Guangdong Province , China
| | - Jianjun Liu
- Key Laboratory of Modern Toxicology of Shenzhen , Shenzhen Center for Disease Control and Prevention , No. 8 , Longyuan Road , Nanshan District , Shenzhen , 518055 , China . ; ; Tel: +86 755 25601914
| | - Zhixiong Zhuang
- Key Laboratory of Modern Toxicology of Shenzhen , Shenzhen Center for Disease Control and Prevention , No. 8 , Longyuan Road , Nanshan District , Shenzhen , 518055 , China . ; ; Tel: +86 755 25601914
| | - Xifei Yang
- Key Laboratory of Modern Toxicology of Shenzhen , Shenzhen Center for Disease Control and Prevention , No. 8 , Longyuan Road , Nanshan District , Shenzhen , 518055 , China . ; ; Tel: +86 755 25601914
| |
Collapse
|