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Cho H, Huh KM, Shim MS, Cho YY, Lee JY, Lee HS, Kwon YJ, Kang HC. Selective delivery of imaging probes and therapeutics to the endoplasmic reticulum or Golgi apparatus: Current strategies and beyond. Adv Drug Deliv Rev 2024; 212:115386. [PMID: 38971180 DOI: 10.1016/j.addr.2024.115386] [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: 05/01/2024] [Revised: 06/14/2024] [Accepted: 07/01/2024] [Indexed: 07/08/2024]
Abstract
To maximize therapeutic effects and minimize unwanted effects, the interest in drug targeting to the endoplasmic reticulum (ER) or Golgi apparatus (GA) has been recently growing because two organelles are distributing hubs of cellular building/signaling components (e.g., proteins, lipids, Ca2+) to other organelles and the plasma membrane. Their structural or functional damages induce organelle stress (i.e., ER or GA stress), and their aggravation is strongly related to diseases (e.g., cancers, liver diseases, brain diseases). Many efforts have been developed to image (patho)physiological functions (e.g., oxidative stress, protein/lipid-related processing) and characteristics (e.g., pH, temperature, biothiols, reactive oxygen species) in the target organelles and to deliver drugs for organelle disruption using organelle-targeting moieties. Therefore, this review will overview the structure, (patho)physiological functions/characteristics, and related diseases of the organelles of interest. Future direction on ER or GA targeting will be discussed by understanding current strategies and investigations on targeting, imaging/sensing, and therapeutic systems.
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Affiliation(s)
- Hana Cho
- Department of Pharmacy, College of Pharmacy, The Catholic University of Korea, Bucheon 14662, Republic of Korea
| | - Kang Moo Huh
- Departments of Polymer Science and Engineering & Materials Science and Engineering, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Min Suk Shim
- Division of Bioengineering, Incheon National University, Incheon 22012, Republic of Korea
| | - Yong-Yeon Cho
- Department of Pharmacy, College of Pharmacy, The Catholic University of Korea, Bucheon 14662, Republic of Korea; Research Institute for Controls and Materials of Regulated Cell Death, The Catholic University of Korea, Bucheon 14662, Republic of Korea
| | - Joo Young Lee
- Department of Pharmacy, College of Pharmacy, The Catholic University of Korea, Bucheon 14662, Republic of Korea; Research Institute for Controls and Materials of Regulated Cell Death, The Catholic University of Korea, Bucheon 14662, Republic of Korea
| | - Hye Suk Lee
- Department of Pharmacy, College of Pharmacy, The Catholic University of Korea, Bucheon 14662, Republic of Korea; Research Institute for Controls and Materials of Regulated Cell Death, The Catholic University of Korea, Bucheon 14662, Republic of Korea
| | - Young Jik Kwon
- Department of Pharmaceutical Sciences, University of California, Irvine, CA 92697, USA
| | - Han Chang Kang
- Department of Pharmacy, College of Pharmacy, The Catholic University of Korea, Bucheon 14662, Republic of Korea; Research Institute for Controls and Materials of Regulated Cell Death, The Catholic University of Korea, Bucheon 14662, Republic of Korea.
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Paul NF, Gustmann K, Tetens J, Falker-Gieske C. MG132 dramatically reduces SAA expression in chicken hepatocellular carcinoma cells at the transcript level independent of its endogenous promoter. Mol Biol Rep 2024; 51:770. [PMID: 38896168 PMCID: PMC11186868 DOI: 10.1007/s11033-024-09726-9] [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: 01/09/2024] [Accepted: 06/13/2024] [Indexed: 06/21/2024]
Abstract
BACKGROUND MG132, a proteasome inhibitor, is widely used to inhibit nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) activity by proteasome-mediated degradation of IκB. It has been marketed as a specific, reversible, cell-permeable and low-cost inhibitor. However, adverse effects of the compound have been reported in the literature. We recently discovered and characterised a point mutation in the acute phase protein serum amyloid A (SAA) in chickens, by overexpressing the protein in chicken hepatocellular carcinoma (LMH) cells. This serine to arginine exchange at amino acid position 90 (SAA.R90S) leads to intra- and extracellular accumulation of SAA, which is surprisingly counteracted by MG132 treatment, independent of SAA's intrinsic promoter. METHODS AND RESULTS To test, whether low proteasomal degradation of SAA.R90S is responsible for the observed intra- and extracellular SAA accumulation, we intended to inhibit the proteasome in SAA wild type (SAA.WT) overexpressing cells with MG132. However, we observed an unexpected drastic decrease in SAA protein expression at the transcript level. NF-κB gene expression was unchanged by MG132 at the measured time point. CONCLUSIONS The observed results demonstrate that MG132 inhibits SAA expression at the transcript level, independent of its endogenous promoter. Further, the data might indicate that NF-κB is not involved in the observed MG132-induced inhibition of SAA expression. We, consequently, question in this brief report whether MG132 should truly be categorised as a specific ubiquitin proteasome inhibitor and recommend the usage of alternative compounds.
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Affiliation(s)
- Nora-Fabienne Paul
- Department of Animal Sciences, Division of Functional Breeding, Georg-August-Universität Göttingen, Burckhardtweg 2, 37077, Göttingen, Germany
| | - Karolin Gustmann
- Department of Animal Sciences, Division of Functional Breeding, Georg-August-Universität Göttingen, Burckhardtweg 2, 37077, Göttingen, Germany
| | - Jens Tetens
- Department of Animal Sciences, Division of Functional Breeding, Georg-August-Universität Göttingen, Burckhardtweg 2, 37077, Göttingen, Germany
- Center for Integrated Breeding Research, Georg-August-University, Albrecht-Thaer-Weg 3, 37075, Göttingen, Germany
| | - Clemens Falker-Gieske
- Department of Animal Sciences, Division of Functional Breeding, Georg-August-Universität Göttingen, Burckhardtweg 2, 37077, Göttingen, Germany.
- Center for Integrated Breeding Research, Georg-August-University, Albrecht-Thaer-Weg 3, 37075, Göttingen, Germany.
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Hou S, Zhang J, Jiang X, Yang Y, Shan B, Zhang M, Liu C, Yuan J, Xu D. PARP5A and RNF146 phase separation restrains RIPK1-dependent necroptosis. Mol Cell 2024; 84:938-954.e8. [PMID: 38272024 DOI: 10.1016/j.molcel.2023.12.041] [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: 08/08/2023] [Revised: 11/14/2023] [Accepted: 12/29/2023] [Indexed: 01/27/2024]
Abstract
Phase separation is a vital mechanism that mediates the formation of biomolecular condensates and their functions. Necroptosis is a lytic form of programmed cell death mediated by RIPK1, RIPK3, and MLKL downstream of TNFR1 and has been implicated in mediating many human diseases. However, whether necroptosis is regulated by phase separation is not yet known. Here, we show that upon the induction of necroptosis and recruitment by the adaptor protein TAX1BP1, PARP5A and its binding partner RNF146 form liquid-like condensates by multivalent interactions to perform poly ADP-ribosylation (PARylation) and PARylation-dependent ubiquitination (PARdU) of activated RIPK1 in mouse embryonic fibroblasts. We show that PARdU predominantly occurs on the K376 residue of mouse RIPK1, which promotes proteasomal degradation of kinase-activated RIPK1 to restrain necroptosis. Our data demonstrate that PARdU on K376 of mouse RIPK1 provides an alternative cell death checkpoint mediated by phase separation-dependent control of necroptosis by PARP5A and RNF146.
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Affiliation(s)
- Shouqiao Hou
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 201210, China; University of Chinese Academy of Sciences, Beijing 101408, China
| | - Jian Zhang
- Department of Neurosurgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215031, China
| | - Xiaoyan Jiang
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 201210, China
| | - Yuanxin Yang
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 201210, China; University of Chinese Academy of Sciences, Beijing 101408, China
| | - Bing Shan
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 201210, China
| | - Mengmeng Zhang
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 201210, China
| | - Cong Liu
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 201210, China; Shanghai Key Laboratory of Aging Studies, Shanghai 201210, China; State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Junying Yuan
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 201210, China; Shanghai Key Laboratory of Aging Studies, Shanghai 201210, China
| | - Daichao Xu
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 201210, China; Shanghai Key Laboratory of Aging Studies, Shanghai 201210, China; State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China.
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4
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Teder T, Haeggström JZ, Airavaara M, Lõhelaid H. Cross-talk between bioactive lipid mediators and the unfolded protein response in ischemic stroke. Prostaglandins Other Lipid Mediat 2023; 168:106760. [PMID: 37331425 DOI: 10.1016/j.prostaglandins.2023.106760] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 05/27/2023] [Accepted: 06/15/2023] [Indexed: 06/20/2023]
Abstract
Ischemic cerebral stroke is a severe medical condition that affects about 15 million people every year and is the second leading cause of death and disability globally. Ischemic stroke results in neuronal cell death and neurological impairment. Current therapies may not adequately address the deleterious metabolic changes and may increase neurological damage. Oxygen and nutrient depletion along with the tissue damage result in endoplasmic reticulum (ER) stress, including the Unfolded Protein Response (UPR), and neuroinflammation in the affected area and cause cell death in the lesion core. The spatio-temporal production of lipid mediators, either pro-inflammatory or pro-resolving, decides the course and outcome of stroke. The modulation of the UPR as well as the resolution of inflammation promotes post-stroke cellular viability and neuroprotection. However, studies about the interplay between the UPR and bioactive lipid mediators remain elusive and this review gives insights about the crosstalk between lipid mediators and the UPR in ischemic stroke. Overall, the treatment of ischemic stroke is often inadequate due to lack of effective drugs, thus, this review will provide novel therapeutical strategies that could promote the functional recovery from ischemic stroke.
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Affiliation(s)
- Tarvi Teder
- Division of Physiological Chemistry II, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Jesper Z Haeggström
- Division of Physiological Chemistry II, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Mikko Airavaara
- Neuroscience Center, HiLIFE, University of Helsinki, Finland; Drug Research Program, Division of Pharmacology and Pharmacotherapy, Faculty of Pharmacy, University of Helsinki, Finland
| | - Helike Lõhelaid
- Neuroscience Center, HiLIFE, University of Helsinki, Finland; Drug Research Program, Division of Pharmacology and Pharmacotherapy, Faculty of Pharmacy, University of Helsinki, Finland.
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Enhanced Transcriptional Strength of HIV-1 Subtype C Minimizes Gene Expression Noise and Confers Stability to the Viral Latent State. J Virol 2023; 97:e0137622. [PMID: 36533949 PMCID: PMC9888270 DOI: 10.1128/jvi.01376-22] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Stochastic fluctuations in gene expression emanating from the HIV-1 long terminal repeat (LTR), amplified by the Tat positive feedback circuit, determine the choice between viral infection fates: active transcription (ON) or transcriptional silence (OFF). The emergence of several transcription factor binding site (TFBS) variant strains in HIV-1 subtype C (HIV-1C), especially those containing the duplication of the NF-κB motif, mandates the evaluation of the effect of enhanced transcriptional strength on gene expression noise and its influence on viral fate selection switch. Using a panel of subgenomic LTR-variant strains containing different copy numbers of the NF-κB motif (ranging from 0 to 4), we used flow cytometry, mRNA quantification, and pharmacological perturbations to demonstrate an inverse correlation between promoter strength and gene expression noise in Jurkat T cells and primary CD4+ T cells. The inverse correlation is consistent in clonal cell populations at constant intracellular concentrations of Tat and when NF-κB levels were regulated pharmacologically. Further, we show that strong LTRs containing at least two copies of the NF-κB motif in the enhancer establish a more stable latent state and demonstrate more rapid latency reversal than weak LTRs containing fewer motifs. We also demonstrate a cooperative binding of NF-κB to the motif cluster in HIV-1C LTRs containing two, three, or four NF-κB motifs (Hill coefficient [H] = 2.61, 3.56, and 3.75, respectively). The present work alludes to a possible evolution of the HIV-1C LTR toward gaining transcriptional strength associated with attenuated gene expression noise with implications for viral latency. IMPORTANCE Over the past two consecutive decades, HIV-1 subtype C (HIV-1C) has been undergoing directional evolution toward augmenting the transcriptional strength of the long terminal repeat (LTR) by adding more copies of the existing transcription factor binding site (TFBS) by sequence duplication. Additionally, the duplicated elements are genetically diverse, suggesting broader-range signal receptivity by variant LTRs. The HIV-1 promoter is inherently noisy, and the stochastic fluctuations in gene expression of variant LTRs may influence the active transcription (ON)/transcriptional silence (OFF) latency decisions. The evolving NF-κB motif variations of HIV-1C offer a powerful opportunity to examine how the transcriptional strength of the LTR might influence gene expression noise. Our work here shows that the augmented transcriptional strength of the HIV-1C LTR leads to concomitantly reduced gene expression noise, consequently leading to stabler latency maintenance and rapid latency reversal. The present work offers a novel lead toward appreciating the molecular mechanisms governing HIV-1 latency.
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Kageyama T, Shimizu A, Anakama R, Nakajima R, Suzuki K, Okubo Y, Fukuda J. Reprogramming of three-dimensional microenvironments for in vitro hair follicle induction. SCIENCE ADVANCES 2022; 8:eadd4603. [PMID: 36269827 PMCID: PMC9586475 DOI: 10.1126/sciadv.add4603] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 09/02/2022] [Indexed: 06/08/2023]
Abstract
During embryonic development, reciprocal interactions between epidermal and mesenchymal layers trigger hair follicle morphogenesis. This study revealed that microenvironmental reprogramming via control over these interactions enabled hair follicle induction in vitro. A key approach is to modulate spatial distributions of epithelial and mesenchymal cells in their spontaneous organization. The de novo hair follicles with typical morphological features emerged in aggregates of the two cell types, termed hair follicloids, and hair shafts sprouted with near 100% efficiency in vitro. The hair shaft length reached ~3 mm in culture. Typical trichogenic signaling pathways were up-regulated in hair follicloids. Owing to replication of hair follicle morphogenesis in vitro, melanosome production and transportation were also monitored in the hair bulb region. This in vitro hair follicle model might be valuable for better understanding hair follicle induction, evaluating hair growth and inhibition of hair growth by drugs, and modeling gray hairs in a well-defined environment.
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Affiliation(s)
- Tatsuto Kageyama
- Faculty of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
- Kanagawa Institute of Industrial Science and Technology, 3-2-1 Sakado Takatsu-ku, Kawasaki, Kanagawa 213-0012, Japan
- Japan Science and Technology Agency (JST)-PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Akihiro Shimizu
- Faculty of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
| | - Riki Anakama
- Faculty of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
| | - Rikuma Nakajima
- Faculty of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
| | - Kohei Suzuki
- Faculty of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
- Nissan Chemical Corporation, 2-5-1 Nihonbashi, Chuo-ku, Tokyo 103-6119, Japan
| | - Yusuke Okubo
- Division of Cellular and Molecular Toxicology, Center for Biological Safety and Research, National Institute of Health Sciences, 3-25-26 Tono-machi, Kawasaki-ku, Kawasaki, Kanagawa 210-9501, Japan
| | - Junji Fukuda
- Faculty of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
- Kanagawa Institute of Industrial Science and Technology, 3-2-1 Sakado Takatsu-ku, Kawasaki, Kanagawa 213-0012, Japan
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Pierucci F, Frati A, Battistini C, Penna F, Costelli P, Meacci E. Control of Skeletal Muscle Atrophy Associated to Cancer or Corticosteroids by Ceramide Kinase. Cancers (Basel) 2021; 13:3285. [PMID: 34209043 PMCID: PMC8269416 DOI: 10.3390/cancers13133285] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/18/2021] [Accepted: 06/25/2021] [Indexed: 01/19/2023] Open
Abstract
Apart from cytokines and chemokines, sphingolipid mediators, particularly sphingosine-1-phosphate (S1P) and ceramide 1-phosphate (C1P), contribute to cancer and inflammation. Cancer, as well as other inflammatory conditions, are associated with skeletal muscle (SkM) atrophy, which is characterized by the unbalance between protein synthesis and degradation. Although the signaling pathways involved in SkM mass wasting are multiple, the regulatory role of simple sphingolipids is limited. Here, we report the impairment of ceramide kinase (CerK), the enzyme responsible for the phosphorylation of ceramide to C1P, associated with the accomplishment of atrophic phenotype in various experimental models of SkM atrophy: in vivo animal model bearing the C26 adenocarcinoma or Lewis lung carcinoma tumors, in human and murine SkM cells treated with the conditioned medium obtained from cancer cells or with the glucocorticoid dexamethasone. Notably, we demonstrate in all the three experimental approaches a drastic decrease of CerK expression. Gene silencing of CerK promotes the up-regulation of atrogin-1/MAFbx expression, which was also observed after cell treatment with C8-ceramide, a biologically active ceramide analogue. Conversely, C1P treatment significantly reduced the corticosteroid's effects. Altogether, these findings provide evidence that CerK, acting as a molecular modulator, may be a new possible target for SkM mass regulation associated with cancer or corticosteroids.
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Affiliation(s)
- Federica Pierucci
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”—Unit of Biochemical Sciences and Molecular Biology, University of Florence, Viale GB Morgagni 50, 50134 Florence, Italy; (F.P.); (A.F.); (C.B.)
| | - Alessia Frati
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”—Unit of Biochemical Sciences and Molecular Biology, University of Florence, Viale GB Morgagni 50, 50134 Florence, Italy; (F.P.); (A.F.); (C.B.)
| | - Chiara Battistini
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”—Unit of Biochemical Sciences and Molecular Biology, University of Florence, Viale GB Morgagni 50, 50134 Florence, Italy; (F.P.); (A.F.); (C.B.)
| | - Fabio Penna
- Department of Clinical and Biological Sciences, University of Turin, 10125 Torino, Italy; (F.P.); (P.C.)
| | - Paola Costelli
- Department of Clinical and Biological Sciences, University of Turin, 10125 Torino, Italy; (F.P.); (P.C.)
| | - Elisabetta Meacci
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”—Unit of Biochemical Sciences and Molecular Biology, University of Florence, Viale GB Morgagni 50, 50134 Florence, Italy; (F.P.); (A.F.); (C.B.)
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Mato-Basalo R, Morente-López M, Arntz OJ, van de Loo FAJ, Fafián-Labora J, Arufe MC. Therapeutic Potential for Regulation of the Nuclear Factor Kappa-B Transcription Factor p65 to Prevent Cellular Senescence and Activation of Pro-Inflammatory in Mesenchymal Stem Cells. Int J Mol Sci 2021; 22:ijms22073367. [PMID: 33805981 PMCID: PMC8038109 DOI: 10.3390/ijms22073367] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 03/21/2021] [Accepted: 03/22/2021] [Indexed: 02/05/2023] Open
Abstract
Mesenchymal stem cells have an important potential in the treatment of age-related diseases. In the last years, small extracellular vesicles derived from these stem cells have been proposed as cell-free therapies. Cellular senescence and proinflammatory activation are involved in the loss of therapeutic capacity and in the phenomenon called inflamm-aging. The regulators of these two biological processes in mesenchymal stem cells are not well-known. In this study, we found that p65 is activated during cellular senescence and inflammatory activation in human umbilical cord-derived mesenchymal stem cell. To demonstrate the central role of p65 in these two processes, we used small-molecular inhibitors of p65, such as JSH-23, MG-132 and curcumin. We found that the inhibition of p65 prevents the cellular senescence phenotype in human umbilical cord-derived mesenchymal stem cells. Besides, p65 inhibition produced the inactivation of proinflammatory molecules as components of a senescence-associated secretory phenotype (SASP) (interleukin-6 and interleukin-8 (IL-6 and IL-8)). Additionally, we found that the inhibition of p65 prevents the transmission of paracrine senescence between mesenchymal stem cells and the proinflammatory message through small extracellular vesicles. Our work highlights the important role of p65 and its inhibition to restore the loss of functionality of small extracellular vesicles from senescent mesenchymal stem cells and their inflamm-aging signature.
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Affiliation(s)
- Rocío Mato-Basalo
- Grupo de Terapia Celular y Medicina Regenerativa, Departamento de Fisioterapia, Ciencias Biomédicas y Medicina, Universdidade da Coruña, 15006 A Coruña, Spain; (R.M.-B.); (M.M.-L.)
| | - Miriam Morente-López
- Grupo de Terapia Celular y Medicina Regenerativa, Departamento de Fisioterapia, Ciencias Biomédicas y Medicina, Universdidade da Coruña, 15006 A Coruña, Spain; (R.M.-B.); (M.M.-L.)
| | - Onno J Arntz
- Experimental Rheumatology, Department of Rheumatology, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands; (O.J.A.); (F.A.J.v.d.L.)
| | - Fons A. J. van de Loo
- Experimental Rheumatology, Department of Rheumatology, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands; (O.J.A.); (F.A.J.v.d.L.)
| | - Juan Fafián-Labora
- Grupo de Terapia Celular y Medicina Regenerativa, Departamento de Fisioterapia, Ciencias Biomédicas y Medicina, Universdidade da Coruña, 15006 A Coruña, Spain; (R.M.-B.); (M.M.-L.)
- Correspondence: (J.F.-L.); (M.C.A.)
| | - María C. Arufe
- Grupo de Terapia Celular y Medicina Regenerativa, Departamento de Fisioterapia, Ciencias Biomédicas y Medicina, Universdidade da Coruña, 15006 A Coruña, Spain; (R.M.-B.); (M.M.-L.)
- Correspondence: (J.F.-L.); (M.C.A.)
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Mangiapane G, Parolini I, Conte K, Malfatti MC, Corsi J, Sanchez M, Pietrantoni A, D'Agostino VG, Tell G. Enzymatically active apurinic/apyrimidinic endodeoxyribonuclease 1 is released by mammalian cells through exosomes. J Biol Chem 2021; 296:100569. [PMID: 33753167 PMCID: PMC8080531 DOI: 10.1016/j.jbc.2021.100569] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 03/11/2021] [Accepted: 03/18/2021] [Indexed: 12/11/2022] Open
Abstract
The apurinic/apyrimidinic endodeoxyribonuclease 1 (APE1), the main AP-endonuclease of the DNA base excision repair pathway, is a key molecule of interest to researchers due to its unsuspected roles in different nonrepair activities, such as: i) adaptive cell response to genotoxic stress, ii) regulation of gene expression, and iii) processing of microRNAs, which make it an excellent drug target for cancer treatment. We and others recently demonstrated that APE1 can be secreted in the extracellular environment and that serum APE1 may represent a novel prognostic biomarker in hepatocellular and non-small-cell lung cancers. However, the mechanism by which APE1 is released extracellularly was not described before. Here, using three different approaches for exosomes isolation: commercial kit, nickel-based isolation, and ultracentrifugation methods and various mammalian cell lines, we elucidated the mechanisms responsible for APE1 secretion. We demonstrated that APE1 p37 and p33 forms are actively secreted through extracellular vesicles (EVs), including exosomes from different mammalian cell lines. We then observed that APE1 p33 form is generated by proteasomal-mediated degradation and is enzymatically active in EVs. Finally, we revealed that the p33 form of APE1 accumulates in EVs upon genotoxic treatment by cisplatin and doxorubicin, compounds commonly found in chemotherapy pharmacological treatments. Taken together, these findings provide for the first time evidence that a functional Base Excision Repair protein is delivered through exosomes in response to genotoxic stresses, shedding new light into the complex noncanonical biological functions of APE1 and opening new intriguing perspectives on its role in cancer biology.
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Affiliation(s)
- Giovanna Mangiapane
- Laboratory of Molecular Biology and DNA repair, Department of Medicine (DAME), University of Udine, Udine, Italy
| | - Isabella Parolini
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Kristel Conte
- Laboratory of Molecular Biology and DNA repair, Department of Medicine (DAME), University of Udine, Udine, Italy
| | - Matilde Clarissa Malfatti
- Laboratory of Molecular Biology and DNA repair, Department of Medicine (DAME), University of Udine, Udine, Italy
| | - Jessica Corsi
- Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, Trento, Italy
| | | | | | - Vito G D'Agostino
- Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, Trento, Italy
| | - Gianluca Tell
- Laboratory of Molecular Biology and DNA repair, Department of Medicine (DAME), University of Udine, Udine, Italy.
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Effects of Resvega on Inflammasome Activation in Conjunction with Dysfunctional Intracellular Clearance in Retinal Pigment Epithelial (RPE) Cells. Antioxidants (Basel) 2021; 10:antiox10010067. [PMID: 33430331 PMCID: PMC7825790 DOI: 10.3390/antiox10010067] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 12/23/2020] [Accepted: 01/01/2021] [Indexed: 12/12/2022] Open
Abstract
Age-related macular degeneration (AMD) is an eye disease in which retinal pigment epithelium (RPE) cells play a crucial role in maintaining retinal homeostasis and photoreceptors’ functionality. During disease progression, there is increased inflammation with nucleotide-binding domain, leucine-rich repeat, and Pyrin domain 3 (NLRP3) inflammasome activation, oxidative stress, and impaired autophagy in RPE cells. Previously, we have shown that the dietary supplement Resvega reduces reactive oxygen species (ROS) production and induces autophagy in RPE cells. Here, we investigated the ability of Resvega to prevent NLRP3 inflammasome activation with impaired protein clearance in human RPE cells. Cell viability was measured using the lactate dehydrogenase (LDH) and the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assays. Enzyme-linked immunosorbent assays (ELISA) were utilized to determine the secretion of cytokines, NLRP3, and vascular endothelial growth factor (VEGF). Caspase-1 activity was measured with a fluorescent labeled inhibitor of caspase-1 (FLICA; FAM-YVAD-FMK) and detected microscopically. Resvega improved the cell membrane integrity, which was evident as reduced LDH leakage from cells. In addition, the caspase-1 activity and NLRP3 release were reduced, as was the secretion of two inflammatory cytokines, interleukin (IL)-1β and IL-8, in IL-1α-primed ARPE-19 cells. According to our results, Resvega can potentially reduce NLRP3 inflammasome-mediated inflammation in RPE cells with impaired protein clearance.
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11
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Development of a cell-based pathway modulator screening system to screen the targeted cancer therapeutic candidates. Hum Cell 2021; 34:445-456. [PMID: 33405176 DOI: 10.1007/s13577-020-00476-x] [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: 08/13/2020] [Accepted: 12/17/2020] [Indexed: 10/22/2022]
Abstract
To overcome the issues of poor prognosis and to tackle the non-responsiveness to various chemotherapeutics; it is necessary to develop targeted cancer therapeutic agents. Also, it is being necessary to understand the molecular targets of the drug candidates and drugs in the context of cellular signaling pathways, to make progress towards the development of targeted cancer therapeutics. Towards addressing these, we have established a cell-based and pathway-focused drug screening system for the pathways such as MYC, E2F, WNT, ERK, NRF1/2, HIF1α, p53, YY1 and NFκB. These signaling pathways are highly dysregulated in many cancers, including gastric cancer. The developed firefly luciferase assay-based screening system in gastric cancer lineage is suitable for the screening of the massive panel of drugs, drug candidates, small molecule inhibitors, chemicals and alternate drug formulations. The developed stable cell lines have been demonstrated for their pathway activity reporting features using the corresponding pathway-specific modulators. A proof-of-concept medium throughput screening focusing on YY1 signaling pathway also revealed the connection between calcium channel blockers and YY1 signaling. The developed signaling pathway screening assay cells are valuable resource and will serve as the screening platform for screening the drug libraries towards the development of targeted cancer therapeutics.
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12
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Halder A, Yadav K, Aggarwal A, Singhal N, Sandhir R. Activation of TNFR1 and TLR4 following oxygen glucose deprivation promotes mitochondrial fission in C6 astroglial cells. Cell Signal 2020; 75:109714. [PMID: 32693013 DOI: 10.1016/j.cellsig.2020.109714] [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: 02/12/2020] [Revised: 06/30/2020] [Accepted: 07/12/2020] [Indexed: 12/14/2022]
Abstract
Astrocytes have emerged as active players in the innate immune response triggered by various types of insults. Recent literature suggests that mitochondria are key participants in innate immunity. The present study investigates the role of ischemia-induced innate immune response on p65/PGC-1α mediated mitochondrial dynamics in C6 astroglial cells. OGD conditions induced astroglial differentiation in C6 cells and increased the expression of hypoxia markers; HIF-1α, HO-1 and Cox4i2. OGD conditions resulted in induction of innate immune response in terms of expression of TNFR1 and TLR4 along with increase in IL-6 and TNF-α levels. OGD conditions resulted in decreased expression of I-κB with a concomitant increase in phos-p65 levels. The expression of PGC-1α, a key regulator of mitochondrial biogenesis, was also increased. Immunochemical staining suggested that phos-p65 and PGC-1α was co-localized. Studies on mitochondrial fusion (Mfn-1) and fission (DRP1) markers revealed shift toward fission. In addition, mitochondrial membrane potential decreased with increased DNA degradation and apoptosis confirming mitochondrial fission under OGD conditions. However, inhibition of phos-p65 by MG132 reduced the co-localization of phos-p65/ PGC-1α and significantly increased the Mfn-1 expression. The findings demonstrate the involvement of TNFR1 and TLR4 mediated immune response followed by interaction between phos-p65 and PGC-1α in promoting fission in C6 cells under hypoxic condition.
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Affiliation(s)
- Avishek Halder
- Department of Biochemistry, Basic Medical Science Block II, Panjab University, Chandigarh, India
| | - Kamalendra Yadav
- National Agri-Food Biotechnology Institute, Sector 81, Mohali, Punjab, India
| | - Aanchal Aggarwal
- National Agri-Food Biotechnology Institute, Sector 81, Mohali, Punjab, India
| | - Nitin Singhal
- National Agri-Food Biotechnology Institute, Sector 81, Mohali, Punjab, India
| | - Rajat Sandhir
- Department of Biochemistry, Basic Medical Science Block II, Panjab University, Chandigarh, India.
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13
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Barabutis N. Unfolded Protein Response supports endothelial barrier function. Biochimie 2019; 165:206-209. [PMID: 31404589 DOI: 10.1016/j.biochi.2019.08.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Accepted: 08/07/2019] [Indexed: 12/17/2022]
Abstract
Ongoing efforts are oriented towards the development of novel therapeutic agents to repress lung hyperpermeability responses due to inflammation. The endothelial barrier dysfunction triggered by such events, may eventually lead to severe cardiovascular complications, such as the Acute Respiratory Distress Syndrome. Hsp90 inhibitors are anticancer compounds, associated with strong anti-inflammatory responses in the endothelium. Our latest observations in experimental models of Acute Lung Injury suggest that P53 orchestrates, at least in part, such activities. Remarkably, both Hsp90 inhibition and P53 induction are associated with the activation of the Unfolded Protein Response element. The purpose of the current manuscript, is to introduce the hypotheses that UPR induction protects the vasculature against inflammation.
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Affiliation(s)
- Nektarios Barabutis
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe, LA, 71201, USA.
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14
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Minshawi F, White MRH, Muller W, Humphreys N, Jackson D, Campbell BJ, Adamson A, Papoutsopoulou S. Human TNF-Luc reporter mouse: A new model to quantify inflammatory responses. Sci Rep 2019; 9:193. [PMID: 30655563 PMCID: PMC6336827 DOI: 10.1038/s41598-018-36969-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 11/19/2018] [Indexed: 12/26/2022] Open
Abstract
Tumour necrosis factor (TNF) is a key cytokine during inflammatory responses and its dysregulation is detrimental in many inflammatory diseases, such as rheumatoid arthritis and inflammatory bowel disease. Here, we used a bacterial artificial chromosome (BAC) construct that expresses luciferase under the control of the human TNF locus to generate a novel transgenic mouse, the hTNF.LucBAC strain. In vitro stimulation of hTNF.LucBAC cells of different origin revealed a cell specific response to stimuli demonstrating the integrated construct's ability as a proxy for inflammatory gene response. Lipopolysaccharide was the most potent luciferase inducer in macrophages, while TNF was a strong activator in intestinal organoids. Lipopolysaccharide-induced luciferase activity in macrophages was downregulated by inhibitors of NF-κB pathway, as well as by Interleukin-10, a known anti-inflammatory cytokine. Moreover, the transgene-dependent luciferase activity showed a positive correlation to the endogenous murine soluble TNF secreted to the culture medium. In conclusion, the hTNF.LucBAC strain is a valuable tool for studying and screening molecules that target TNF synthesis and will allow further functional studies of the regulatory elements of the TNF locus.
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Affiliation(s)
- Faisal Minshawi
- Faculty of Biology, Medicine and Health, School of Biological Sciences, Manchester, M13 9PT, United Kingdom.,Department of Laboratory Medicine, Faculty of Applied Medical Science, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Mike R H White
- Faculty of Biology, Medicine and Health, School of Biological Sciences, Manchester, M13 9PT, United Kingdom
| | - Werner Muller
- Faculty of Biology, Medicine and Health, School of Biological Sciences, Manchester, M13 9PT, United Kingdom
| | - Neil Humphreys
- Faculty of Biology, Medicine and Health, School of Biological Sciences, Manchester, M13 9PT, United Kingdom
| | - Dean Jackson
- Faculty of Biology, Medicine and Health, School of Biological Sciences, Manchester, M13 9PT, United Kingdom
| | - Barry J Campbell
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, L69 3GE, United Kingdom
| | - Antony Adamson
- Faculty of Biology, Medicine and Health, School of Biological Sciences, Manchester, M13 9PT, United Kingdom.
| | - Stamatia Papoutsopoulou
- Faculty of Biology, Medicine and Health, School of Biological Sciences, Manchester, M13 9PT, United Kingdom. .,Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, L69 3GE, United Kingdom.
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15
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Wang D, Xu Q, Yuan Q, Jia M, Niu H, Liu X, Zhang J, Young CY, Yuan H. Proteasome inhibition boosts autophagic degradation of ubiquitinated-AGR2 and enhances the antitumor efficiency of bevacizumab. Oncogene 2019; 38:3458-3474. [PMID: 30647455 PMCID: PMC6756021 DOI: 10.1038/s41388-019-0675-z] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 11/24/2018] [Accepted: 12/21/2018] [Indexed: 11/09/2022]
Abstract
Anterior gradient 2 (AGR2), a protein belonging to the protein disulfide isomerase (PDI) family, is overexpressed in multiple cancers and promotes angiogenesis to drive cancer progression. The mechanisms controlling AGR2 abundance in cancer remain largely unknown. Here, we observed that AGR2 expression is significantly suppressed by proteasome inhibitor MG132/bortezomib at mRNA and protein levels in lung cancer cells. MG132-mediated repression of AGR2 transcription was independent of ROS generation and ER stress induction, but partially resulted from the downregulated E2F1. Further investigation revealed that MG132 facilitated polyubiquitinated AGR2 degradation through activation of autophagy, as evidenced by predominant restoration of AGR2 level in cells genetic depletion of Atg5 and Atg7, or by autophagy inhibitors. Activation of autophagy by rapamycin noticeably reduced the AGR2 protein in cells and in the mouse tissue samples administrated with bortezomib. We also provided evidence identifying the K48-linked polyubiquitin chains conjugating onto K89 of AGR2 by an E3 ligase UBR5. In addition, an autophagy receptor NBR1 was demonstrated to be important in polyubiquitinated AGR2 clearance in response to MG132 or bortezomib. Importantly, downregulation of AGR2 by proteasome inhibition significantly enhanced antitumor activity of bevacizumab, highlighting the importance of AGR2 as a predictive marker for selection of subgroup patients in chemotherapy.
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Affiliation(s)
- Dawei Wang
- Key Laboratory of Experimental Teratology of the Ministry of Education, Institute of Medical Sciences, The Second Hospital of Shandong University, Jinan, China
| | - Qingqing Xu
- Key Laboratory of Experimental Teratology of the Ministry of Education, Institute of Medical Sciences, The Second Hospital of Shandong University, Jinan, China
| | - Quan Yuan
- Key Laboratory of Experimental Teratology of the Ministry of Education, Institute of Medical Sciences, The Second Hospital of Shandong University, Jinan, China
| | - Mengqi Jia
- Key Laboratory of Experimental Teratology of the Ministry of Education, Institute of Medical Sciences, The Second Hospital of Shandong University, Jinan, China
| | - Huanmin Niu
- Key Laboratory of Experimental Teratology of the Ministry of Education, Institute of Medical Sciences, The Second Hospital of Shandong University, Jinan, China
| | - Xiaofei Liu
- Key Laboratory of Experimental Teratology of the Ministry of Education, Institute of Medical Sciences, The Second Hospital of Shandong University, Jinan, China
| | - Jinsan Zhang
- Department of Urology, Mayo Clinic College of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Charles Yf Young
- Department of Urology, Mayo Clinic College of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Huiqing Yuan
- Key Laboratory of Experimental Teratology of the Ministry of Education, Institute of Medical Sciences, The Second Hospital of Shandong University, Jinan, China.
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16
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Rutin protects against lipopolysaccharide-induced mastitis by inhibiting the activation of the NF-κB signaling pathway and attenuating endoplasmic reticulum stress. Inflammopharmacology 2018; 27:77-88. [PMID: 30099676 DOI: 10.1007/s10787-018-0521-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Accepted: 08/01/2018] [Indexed: 12/18/2022]
Abstract
Rutin, found widely in traditional Chinese medicine materials, is used to treat eye swelling and pain, hypertension, and hyperlipidemia. In the present study, a mouse mastitis model induced by lipopolysaccharide (LPS) was established to explore rutin's inhibitory mechanism on mastitis via nuclear factor kappa B (NF-κB) inflammatory signaling and the relationship between NF-κB signaling and endoplasmic reticulum (ER) stress. Mice were divided into six groups: Control group, LPS model group, LPS + rutin (25, 50, and 100 mg/kg) and LPS + dexamethasone (DEX) group. DEX, rutin, and PBS (control and LPS groups) were administered 1 h before and 12 h after perfusion of LPS. After LPS stimulation for 24 h, to evaluate rutin's therapeutic effect on mastitis, the mammary tissues of each group were collected to detect histopathological injury, tumor necrosis factor alpha (TNF-α), interleukin (IL)-1β, and IL-6 mRNA and protein levels; and glucose-regulated protein, 78 kDa (GRP78) protein levels. The protein and mRNA levels of TNF-α, IL-1β, and IL-6 in the LPS + rutin group were significantly lower than those in the LPS model group. Similarly, p50/p105, phosphorylated (p)-p65/p65 and p-inhibitor of nuclear factor kappa b kinase subunit beta (p-IKKβ)/IKKβ ratios in the LPS + rutin group (50 mg/kg) and LPS + rutin group (100 mg/kg) decreased significantly. GRP78 protein expression was significantly higher in LPS + rutin group (100 mg/kg). The structure of mammary tissue became gradually more intact and vacuolization of acini decreased as the rutin concentration increased. The nuclear quantity of p65 in the LPS + rutin group decreased significantly in a rutin dose-dependent manner. Rutin had an anti-inflammatory effect in the LPS-induced mouse mastitis model, manifested by inhibition of NF-κB pathway activation and attenuation of ER stress.
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17
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Zhang W, Xu W, Chen W, Zhou Q. Interplay of Autophagy Inducer Rapamycin and Proteasome Inhibitor MG132 in Reduction of Foam Cell Formation and Inflammatory Cytokine Expression. Cell Transplant 2018; 27:1235-1248. [PMID: 30001636 PMCID: PMC6434468 DOI: 10.1177/0963689718786229] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
MG132 is a pivotal inhibitor of the ubiquitin-proteasome system (UPS), and rapamycin (RAPA) is an important inducer of autophagy. MG132 and RAPA have been shown to be effective agents that can cure multiple autoimmune diseases by reducing inflammation. Although individual MG132 and RAPA showed protective effects for atherosclerosis (AS), the combined effect of these two drugs and its molecular mechanism are still unclear. In this article we investigate the regulation of oxidative modification of low-density lipoprotein (ox-LDL) stress and foam cell formation in the presence of both proteasome inhibitor MG132 and the autophagy inducer RAPA to uncover the molecular mechanism underlying this process. We established the foam cells model by ox-LDL and an animal model. Then, we tested six experimental groups of MG132, RAPA, and 3MA drugs. As a result, RAPA-induced autophagy reduces accumulation of polyubiquitinated proteins and apoptosis of foam cells. The combination of MG132 with RAPA not only suppressed expression of the inflammatory cytokines and formation of macrophage foam cells, but also significantly affected the NF-κB signaling pathway and the polarization of RAW 264.7 cells. These data suggest that the combination of proteasome inhibitor and autophagy inducer ameliorates the inflammatory response and reduces the formation of macrophage foam cells during development of AS. Our research provides a new way to suppress vascular inflammation and stabilize plaques of late atherosclerosis.
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Affiliation(s)
- Wei Zhang
- 1 MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, South China Normal University, Guangzhou, China.,2 College of Biophotonics, South China Normal University, Guangzhou, China
| | - Wan Xu
- 1 MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, South China Normal University, Guangzhou, China.,2 College of Biophotonics, South China Normal University, Guangzhou, China
| | - Wenli Chen
- 1 MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, South China Normal University, Guangzhou, China.,2 College of Biophotonics, South China Normal University, Guangzhou, China
| | - Quan Zhou
- 3 Department of Radiology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
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18
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The histone deacetylase inhibitor SAHA induces HSP60 nitration and its extracellular release by exosomal vesicles in human lung-derived carcinoma cells. Oncotarget 2018; 7:28849-67. [PMID: 26700624 PMCID: PMC5045361 DOI: 10.18632/oncotarget.6680] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Accepted: 11/22/2015] [Indexed: 12/14/2022] Open
Abstract
HSP60 undergoes changes in quantity and distribution in some types of tumors suggesting a participation of the chaperonin in the mechanism of transformation and cancer progression. Suberoylanilide hydroxamic acid (SAHA), a member of a family of histone deacetylase inhibitors (HDACi), has anti-cancer potential but its interaction, if any, with HSP60 has not been elucidated. We investigated the effects of SAHA in a human lung-derived carcinoma cell line (H292). We analysed cell viability and cycle; oxidative stress markers; mitochondrial integrity; HSP60 protein and mRNA levels; and HSP60 post-translational modifications, and its secretion. We found that SAHA is cytotoxic for H292 cells, interrupting the cycle at the G2/M phase, which is followed by death; cytotoxicity is associated with oxidative stress, mitochondrial damage, and diminution of intracellular levels of HSP60; HSP60 undergoes a post-translational modification and becomes nitrated; and nitrated HSP60 is exported via exosomes. We propose that SAHA causes ROS overproduction and mitochondrial dysfunction, which leads to HSP60 nitration and release into the intercellular space and circulation to interact with the immune system. These successive steps might constitute the mechanism of the anti-tumor action of SAHA and provide a basis to design supplementary therapeutic strategies targeting HSP60, which would be more efficacious than the compound alone.
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19
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Amantini C, Farfariello V, Cardinali C, Morelli MB, Marinelli O, Nabissi M, Santoni M, Bonfili L, Cecarini V, Eleuteri AM, Santoni G. The TRPV1 ion channel regulates thymocyte differentiation by modulating autophagy and proteasome activity. Oncotarget 2017; 8:90766-90780. [PMID: 29207602 PMCID: PMC5710883 DOI: 10.18632/oncotarget.21798] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Accepted: 09/20/2017] [Indexed: 12/28/2022] Open
Abstract
Autophagy and the ubiquitin-proteasome system (UPS) control thymus cell homeostasis under resting and endoplasmic reticulum (ER) stress conditions. Several evidence support a cross-talk between UPS and autophagy; abrogation of UPS responses stimulates autophagy, and vice versa the inhibition of autophagy alters the UPS functions. Herein, we found that TRPV1 activation induces ER stress, proteasome dysfunction and autophagy in thymocytes by modulating the expression of UPR-related genes. The TRPV1-mediated autophagy prevents the UPR activation by inhibiting BiP, Grp94 and ERp57 chaperone protein expression. Thymocytes from TRPV1 KO mice display both autophagy and proteasome dysfunctions, resulting in increased apoptotic cells and reduced total DP thymocyte number. In addition, positive selection of thymocytes triggered by anti-TCRβ/CD2 Ab-mediated costimulation induces apoptosis in thymocytes from TRPV1 KO as compared with WT mice. Stimulation of TRPV1 KO thymocytes with anti-TCRβ/CD2 mAbs modulates the expression of CD4 antigen on purified DP thymocytes, with reduced number of mature, single positive (SP) CD4 and increased number of immature SP CD4low and DP CD4lowCD8+ thymocytes, further supporting the intrinsic role of TRPV1 in T cell maturation. Finally, a reduction in CD8+ and CD4+ T cells is evidenced in the peripheral blood and spleen of TRPV1 KO, as compared with WT mice. Therapeutic strategy by restraining or stimulating the TRPV1 expression and functions in thymocytes might represent a new pharmacological tool in the regulation of different inflammatory T cell responses.
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Affiliation(s)
- Consuelo Amantini
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, Italy
| | - Valerio Farfariello
- University of Lille, INSERM U1003 - PHYCEL - Physiologie Cellulaire, Lille, France
| | - Claudio Cardinali
- School of Pharmacy, Experimental Medicine Section, University of Camerino, Camerino, Italy.,Department of Molecular Medicine, Sapienza University, Rome, Italy
| | - Maria Beatrice Morelli
- School of Pharmacy, Experimental Medicine Section, University of Camerino, Camerino, Italy.,Department of Molecular Medicine, Sapienza University, Rome, Italy
| | - Oliviero Marinelli
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, Italy
| | - Massimo Nabissi
- School of Pharmacy, Experimental Medicine Section, University of Camerino, Camerino, Italy
| | - Matteo Santoni
- School of Pharmacy, Experimental Medicine Section, University of Camerino, Camerino, Italy
| | - Laura Bonfili
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, Italy
| | - Valentina Cecarini
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, Italy
| | - Anna Maria Eleuteri
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, Italy
| | - Giorgio Santoni
- School of Pharmacy, Experimental Medicine Section, University of Camerino, Camerino, Italy
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20
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Proteasome Inhibitor–Loaded Micelles Enhance Antitumor Activity Through Macrophage Reprogramming by NF-κB Inhibition. J Pharm Sci 2017; 106:2438-2446. [DOI: 10.1016/j.xphs.2017.03.031] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 03/25/2017] [Accepted: 03/27/2017] [Indexed: 11/18/2022]
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21
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Jeon YM, Lee S, Kim S, Kwon Y, Kim K, Chung CG, Lee S, Lee SB, Kim HJ. Neuroprotective Effects of Protein Tyrosine Phosphatase 1B Inhibition against ER Stress-Induced Toxicity. Mol Cells 2017; 40:280-290. [PMID: 28359145 PMCID: PMC5424274 DOI: 10.14348/molcells.2017.2320] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Revised: 03/21/2017] [Accepted: 03/22/2017] [Indexed: 12/15/2022] Open
Abstract
Several lines of evidence suggest that endoplasmic reticulum (ER) stress plays a critical role in the pathogenesis of many neurodegenerative diseases such as Alzheimer's disease, Parkinson's disease, and amyotrophic lateral sclerosis. Protein tyrosine phosphatase 1B (PTP1B) is known to regulate the ER stress signaling pathway, but its role in neuronal systems in terms of ER stress remains largely unknown. Here, we showed that rotenone-induced toxicity in human neuroblastoma cell lines and mouse primary cortical neurons was ameliorated by PTP1B inhibition. Moreover, the increase in the level of ER stress markers (eIF2α phosphorylation and PERK phosphorylation) induced by rotenone treatment was obviously suppressed by concomitant PTP1B inhibition. However, the rotenone-induced production of reactive oxygen species (ROS) was not affected by PTP1B inhibition, suggesting that the neuroprotective effect of the PTP1B inhibitor is not associated with ROS production. Moreover, we found that MG132-induced toxicity involving proteasome inhibition was also ameliorated by PTP1B inhibition in a human neuroblastoma cell line and mouse primary cortical neurons. Consistently, downregulation of the PTP1B homologue gene in Drosophila mitigated rotenone- and MG132-induced toxicity. Taken together, these findings indicate that PTP1B inhibition may represent a novel therapeutic approach for ER stress-mediated neurodegenerative diseases.
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Affiliation(s)
- Yu-Mi Jeon
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), Daegu 41068,
Korea
| | - Shinrye Lee
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), Daegu 41068,
Korea
| | - Seyeon Kim
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), Daegu 41068,
Korea
| | - Younghwi Kwon
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), Daegu 41068,
Korea
| | - Kiyoung Kim
- Department of Medical Biotechnology, Soonchunhyang University, Asan 31538,
Korea
| | - Chang Geon Chung
- Department of Brain & Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988,
Korea
| | - Seongsoo Lee
- Gwangju Center, Korea Basic Science Institute (KBSI), Gwangju 61186,
Korea
| | - Sung Bae Lee
- Department of Brain & Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988,
Korea
| | - Hyung-Jun Kim
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), Daegu 41068,
Korea
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N-Acetylcysteine in Combination with IGF-1 Enhances Neuroprotection against Proteasome Dysfunction-Induced Neurotoxicity in SH-SY5Y Cells. PARKINSONS DISEASE 2016; 2016:6564212. [PMID: 27774335 PMCID: PMC5059605 DOI: 10.1155/2016/6564212] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Revised: 08/19/2016] [Accepted: 08/28/2016] [Indexed: 11/17/2022]
Abstract
Ubiquitin proteasome system (UPS) dysfunction has been implicated in the development of many neuronal disorders, including Parkinson's disease (PD). Previous studies focused on individual neuroprotective agents and their respective abilities to prevent neurotoxicity following a variety of toxic insults. However, the effects of the antioxidant N-acetylcysteine (NAC) on proteasome impairment-induced apoptosis have not been well characterized in human neuronal cells. The aim of this study was to determine whether cotreatment of NAC and insulin-like growth factor-1 (IGF-1) efficiently protected against proteasome inhibitor-induced cytotoxicity in SH-SY5Y cells. Our results demonstrate that the proteasome inhibitor, MG132, initiates poly(ADP-ribose) polymerase (PARP) cleavage, caspase 3 activation, and nuclear condensation and fragmentation. In addition, MG132 treatment leads to endoplasmic reticulum (ER) stress and autophagy-mediated cell death. All of these events can be attenuated without obvious reduction of MG132 induced protein ubiquitination by first treating the cells with NAC and IGF-1 separately or simultaneously prior to exposure to MG132. Moreover, our data demonstrated that the combination of the two proved to be significantly more effective for neuronal protection. Therefore, we conclude that the simultaneous use of growth/neurotrophic factors and a free radical scavenger may increase overall protection against UPS dysfunction-mediated cytotoxicity and neurodegeneration.
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Tan X, Gao J, Shi Z, Tai S, Chan LL, Yang Y, Peng DQ, Liao DF, Jiang ZS, Chang YZ, Gui Y, Zheng XL. MG132 Induces Expression of Monocyte Chemotactic Protein-Induced Protein 1 in Vascular Smooth Muscle Cells. J Cell Physiol 2016; 232:122-8. [PMID: 27035356 DOI: 10.1002/jcp.25396] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Accepted: 03/29/2016] [Indexed: 11/07/2022]
Abstract
Monocyte chemoattractant protein-1 (MCP-1) has been reported to induce the expression of monocyte chemotactic protein-induced protein 1 (MCPIP1), which undergoes ubiquitination degradation. Therefore, we predict that in vascular smooth muscle (VSMCs), MCPIP1 may be induced by MCP-1 and undergo degradation, which can be inhibited by the proteasome inhibitor, MG132. Our results showed that treatment of human VSMCs with MCP-1 did not increase the expression of MCPIP1. Treatment with MG132, however, elevated MCPIP1 protein levels through stimulation of the gene transcription, but not through increasing protein stability. MCPIP1 expression induced by MG132 was inhibited by α-amanitin inhibition of gene transcription or cycloheximide inhibition of protein synthesis. Our further studies showed that MCPIP1 expression induced by MG132 was inhibited by the inhibitors of AKT and p38 kinase, suggesting a role of the AKT-p38 pathway in MG132 effects. We also found that treatment with MG132 induces apoptosis, but overexpression of MCPIP1 inhibited bromodeoxyuridine (BrdU) incorporation of human VSMCs without induction of significant apoptosis. In summary, MCPIP1 expression is induced by MG132 likely through activation of the AKT-p38 pathway. MCPIP1 inhibits SMC proliferation without induction of apoptosis. J. Cell. Physiol. 232: 122-128, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Xi Tan
- Department of Biochemistry and Molecular Biology, Smooth Muscle Research Group, Libin Cardiovascular Institute of Alberta, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Division of Stem Cell Regulation and Application, State Key Laboratory of Chinese Medicine Powder and Medicine Innovation in Hunan (Incubation), Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Jie Gao
- Department of Physiology and Pharmacology, University of Calgary, Calgary, Alberta, Canada
| | - Zhan Shi
- Department of Biochemistry and Molecular Biology, Smooth Muscle Research Group, Libin Cardiovascular Institute of Alberta, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Shi Tai
- Department of Biochemistry and Molecular Biology, Smooth Muscle Research Group, Libin Cardiovascular Institute of Alberta, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Leona Loretta Chan
- Department of Biochemistry and Molecular Biology, Smooth Muscle Research Group, Libin Cardiovascular Institute of Alberta, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Yang Yang
- Department of Cardiology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Dao-Quan Peng
- Department of Cardiology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Duan-Fang Liao
- Division of Stem Cell Regulation and Application, State Key Laboratory of Chinese Medicine Powder and Medicine Innovation in Hunan (Incubation), Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Zhi-Sheng Jiang
- Department of Biochemistry and Molecular Biology, Smooth Muscle Research Group, Libin Cardiovascular Institute of Alberta, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Institute of Cardiovascular Disease and Key Lab for Arteriosclerogy of Hunan Province, University of South China, Hengyang, Hunan, China
| | - Ying-Zi Chang
- Department of Pharmacology, A. T. Still University, Kirksville College of Osteopathic Medicine, Kirksville, Missouri
| | - Yu Gui
- Department of Physiology and Pharmacology, University of Calgary, Calgary, Alberta, Canada
| | - Xi-Long Zheng
- Department of Biochemistry and Molecular Biology, Smooth Muscle Research Group, Libin Cardiovascular Institute of Alberta, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
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Kadioglu O, Jacob S, Bohnert S, Naß J, Saeed MEM, Khalid H, Merfort I, Thines E, Pommerening T, Efferth T. Evaluating ancient Egyptian prescriptions today: Anti-inflammatory activity of Ziziphus spina-christi. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2016; 23:293-306. [PMID: 26969383 DOI: 10.1016/j.phymed.2016.01.004] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 01/08/2016] [Accepted: 01/16/2016] [Indexed: 06/05/2023]
Abstract
BACKGROUND Ziziphus spina-christi (L.) Desf. (Christ's Thorn Jujube) is a wild tree today found in Jordan, Israel, Egypt, and some parts of Africa, which was already in use as a medicinal plant in Ancient Egypt. In ancient Egyptian prescriptions, it was used in remedies against swellings, pain, and heat, and thus should have anti-inflammatory effects. Nowadays, Z. spina-christi, is used in Egypt (by Bedouins, and Nubians), the Arabian Peninsula, Jordan, Iraq, and Morocco against a wide range of illnesses, most of them associated with inflammation. Pharmacological research undertaken to date suggests that it possesses anti-inflammatory, hypoglycemic, hypotensive and anti-microbial effects. The transcription factor NF-κB (nuclear factor kappa-light-chain-enhancer of activated B cells) is critical in inflammation, proliferation and involved in various types of cancer. Identification of new anti-inflammatory compounds might be an effective strategy to target inflammatory disorders and cancer. Therefore, extracts from Z. spina-christi are investigated in terms of their anti-inflammatory effects. Our intention is to evaluate the effects of Z. spina-christi described in ancient Egyptian papyri, and to show whether the effects can be proven with modern pharmacological methods. Furthermore, we determine the active ingredients in crude extracts for their inhibitory activity toward NF-κB pathway. MATERIALS AND METHODS To determine the active ingredients of Z. spina-christi, we fractionated the extracts for bioassays and identified the active compounds. Epigallocatechin, gallocatechin, spinosin, 6''' feruloylspinosin and 6''' sinapoylspinosin and crude extracts of seed, leaf, root or stem were analyzed for their effect on NF-κB DNA binding by electromobility shift assay (EMSA) and nuclear translocation of NF-κB-p65 by Western blot analysis. The binding mode of the compounds to NF-κB pathway proteins was compared with the known inhibitor, MG-132, by in silico molecular docking calculations. Log10IC50 values of gallocatechin and epigallocatechin as two main compounds of the plant were correlated to the microarray-based mRNA expression of 79 inflammation-related genes in cell lines of the National Cancer Institute (NCI, USA) as determined. The expression of 17 genes significantly correlated to the log10IC50 values for gallocatechin or epigallocatechin. RESULTS Nuclear p65 protein level decreased upon treatment with each extract and compound. Root and seed extracts inhibited NF-κB-DNA binding as shown by EMSA. The compounds showed comparable binding energies and similar docking poses as MG-132 on the target proteins. CONCLUSION Z. spina-christi might possess anti-inflammatory activity as assumed by ancient Egyptian prescriptions. Five compounds contributed to this bioactivity, i.e. epigallocatechin, gallocatechin, spinosin, 6''' feruloylspinosin and 6''' sinapoylspinosin as shown in vitro and in silico.
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Affiliation(s)
- Onat Kadioglu
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Staudinger Weg 5, 55128 Mainz, Germany
| | - Stefan Jacob
- Institut für Biotechnologie und Wirkstoff Forschung gGmbH, Erwin-Schrödinger-Straße 56, 67663 Kaiserslautern, Germany
| | - Stefan Bohnert
- Institut für Biotechnologie und Wirkstoff Forschung gGmbH, Erwin-Schrödinger-Straße 56, 67663 Kaiserslautern, Germany
| | - Janine Naß
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Staudinger Weg 5, 55128 Mainz, Germany
| | - Mohamed E M Saeed
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Staudinger Weg 5, 55128 Mainz, Germany
| | - Hassan Khalid
- Department of Pharmacognosy, University of Khartoum, Khartoum, Sudan
| | - Irmgard Merfort
- Department of Pharmaceutical Biology and Biotechnology, Institute of Pharmaceutical Sciences, Albert-Ludwigs-University Freiburg, Stefan-Meier-Straße 19, 79104 Freiburg, Germany
| | - Eckhard Thines
- Institut für Biotechnologie und Wirkstoff Forschung gGmbH, Erwin-Schrödinger-Straße 56, 67663 Kaiserslautern, Germany; Institute of Biotechnology and Drug Research, Johannes Gutenberg University, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Tanja Pommerening
- Department of Egyptology, Institute of Ancient Studies, Johannes Gutenberg University, Hegelstraße 59, 55122 Mainz, Germany.
| | - Thomas Efferth
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Staudinger Weg 5, 55128 Mainz, Germany.
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Balvan J, Gumulec J, Raudenska M, Krizova A, Stepka P, Babula P, Kizek R, Adam V, Masarik M. Oxidative Stress Resistance in Metastatic Prostate Cancer: Renewal by Self-Eating. PLoS One 2015; 10:e0145016. [PMID: 26671576 PMCID: PMC4679176 DOI: 10.1371/journal.pone.0145016] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Accepted: 11/25/2015] [Indexed: 12/15/2022] Open
Abstract
Resistant cancer phenotype is a key obstacle in the successful therapy of prostate cancer. The primary aim of our study was to explore resistance mechanisms in the advanced type of prostate cancer cells (PC-3) and to clarify the role of autophagy in these processes. We performed time-lapse experiment (48 hours) with ROS generating plumbagin by using multimodal holographic microscope. Furthermore, we also performed the flow-cytometric analysis and the qRT-PCR gene expression analysis at 12 selected time points. TEM and confocal microscopy were used to verify the results. We found out that autophagy (namely mitophagy) is an important resistance mechanism. The major ROS producing mitochondria were coated by an autophagic membrane derived from endoplasmic reticulum and degraded. According to our results, increasing ROS resistance may be also accompanied by increased average cell size and polyploidization, which seems to be key resistance mechanism when connected with an escape from senescence. Many different types of cell-cell interactions were recorded including entosis, vesicular transfer, eating of dead or dying cells, and engulfment and cannibalism of living cells. Entosis was disclosed as a possible mechanism of polyploidization and enabled the long-term survival of cancer cells. Significantly reduced cell motility was found after the plumbagin treatment. We also found an extensive induction of pluripotency genes expression (NANOG, SOX2, and POU5F1) at the time-point of 20 hours. We suppose, that overexpression of pluripotency genes in the portion of prostate tumour cell population exposed to ROS leads to higher developmental plasticity and capability to faster respond to changes in the extracellular environment that could ultimately lead to an alteration of cell fate.
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Affiliation(s)
- Jan Balvan
- Department of Pathological Physiology, Faculty of Medicine, Masaryk University / Kamenice 5, CZ-625 00, Brno, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, CZ-616 00, Brno, Czech Republic
| | - Jaromir Gumulec
- Department of Pathological Physiology, Faculty of Medicine, Masaryk University / Kamenice 5, CZ-625 00, Brno, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, CZ-616 00, Brno, Czech Republic
| | - Martina Raudenska
- Department of Pathological Physiology, Faculty of Medicine, Masaryk University / Kamenice 5, CZ-625 00, Brno, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, CZ-616 00, Brno, Czech Republic
| | - Aneta Krizova
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, CZ-616 00, Brno, Czech Republic
- TESCAN Brno, s.r.o., Brno, Czech Republic
| | - Petr Stepka
- Department of Physiology, Faculty of Medicine, Masaryk University / Kamenice 5, CZ-625 00, Brno, Czech Republic
| | - Petr Babula
- Department of Physiology, Faculty of Medicine, Masaryk University / Kamenice 5, CZ-625 00, Brno, Czech Republic
| | - Rene Kizek
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, CZ-616 00, Brno, Czech Republic
- Department of Chemistry and Biochemistry, Mendel University in Brno / Zemedelska 1, CZ-613 00, Brno, Czech Republic
| | - Vojtech Adam
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, CZ-616 00, Brno, Czech Republic
- Department of Chemistry and Biochemistry, Mendel University in Brno / Zemedelska 1, CZ-613 00, Brno, Czech Republic
| | - Michal Masarik
- Department of Pathological Physiology, Faculty of Medicine, Masaryk University / Kamenice 5, CZ-625 00, Brno, Czech Republic
- * E-mail:
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Grunz-Borgmann E, Mossine V, Fritsche K, Parrish AR. Ashwagandha attenuates TNF-α- and LPS-induced NF-κB activation and CCL2 and CCL5 gene expression in NRK-52E cells. Altern Ther Health Med 2015; 15:434. [PMID: 26667305 PMCID: PMC4678649 DOI: 10.1186/s12906-015-0958-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Accepted: 12/04/2015] [Indexed: 02/08/2023]
Abstract
Background The aging kidney is marked by a chronic inflammation, which may exacerbate the progression of renal dysfunction, as well as increase the susceptibility to acute injury. The identification of strategies to alleviate inflammation may have translational impact to attenuate kidney disease. Methods We tested the potential of ashwaganda, sutherlandia and elderberry on tumor necrosis factor-α (TNF-α) and lipopolysaccharide (LPS) induced chemokine (CCL2 and CCL5) expression in vitro. Results Elderberry water-soluble extract (WSE) was pro-inflammatory, while sutherlandia WSE only partially attenuated the TNF-α-induced changes in CCL5. However, ashwaganda WSE completely prevented TNF-α-induced increases in CCL5, while attenuating the increase in CCL2 expression and NF-κB activation. The same pattern of ashwagandha protection was seen using LPS as the pro-inflammatory stimuli. Conclusions Taken together, these results demonstrate the ashwaganda WSE as a valid candidate for evaluation of therapeutic potential for the treatment of chronic renal dysfunction.
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Ghosal A, Jellbauer S, Kapadia R, Raffatellu M, Said HM. Salmonella infection inhibits intestinal biotin transport: cellular and molecular mechanisms. Am J Physiol Gastrointest Liver Physiol 2015; 309:G123-31. [PMID: 25999427 PMCID: PMC4504957 DOI: 10.1152/ajpgi.00112.2015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Accepted: 05/13/2015] [Indexed: 01/31/2023]
Abstract
Infection with the nontyphoidal Salmonella is a common cause of food-borne disease that leads to acute gastroenteritis/diarrhea. Severe/prolonged cases of Salmonella infection could also impact host nutritional status, but little is known about its effect on intestinal absorption of vitamins, including biotin. We examined the effect of Salmonella enterica serovar Typhimurium (S. typhimurium) infection on intestinal biotin uptake using in vivo (streptomycin-pretreated mice) and in vitro [mouse (YAMC) and human (NCM460) colonic epithelial cells, and human intestinal epithelial Caco-2 cells] models. The results showed that infecting mice with wild-type S. typhimurium, but not with its nonpathogenic isogenic invA spiB mutant, leads to a significant inhibition in jejunal/colonic biotin uptake and in level of expression of the biotin transporter, sodium-dependent multivitamin transporter. In contrast, infecting YAMC, NCM460, and Caco-2 cells with S. typhimurium did not affect biotin uptake. These findings suggest that the effect of S. typhimurium infection is indirect and is likely mediated by proinflammatory cytokines, the levels of which were markedly induced in the intestine of S. typhimurium-infected mice. Consistent with this hypothesis, exposure of NCM460 cells to the proinflammatory cytokines TNF-α and IFN-γ led to a significant inhibition of biotin uptake, sodium-dependent multivitamin transporter expression, and activity of the SLC5A6 promoter. The latter effects appear to be mediated, at least in part, via the NF-κB signaling pathway. These results demonstrate that S. typhimurium infection inhibits intestinal biotin uptake, and that the inhibition is mediated via the action of proinflammatory cytokines.
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Affiliation(s)
- Abhisek Ghosal
- 1Departments of Medicine and Physiology/Biophysics, University of California, Irvine, California; ,2Department of Veterans Affairs Medical Center, Long Beach, California;
| | - Stefan Jellbauer
- 3Department of Microbiology and Molecular Genetics, University of California, Irvine, California; and ,4Institute for Immunology, University of California, Irvine, California
| | - Rubina Kapadia
- 1Departments of Medicine and Physiology/Biophysics, University of California, Irvine, California; ,2Department of Veterans Affairs Medical Center, Long Beach, California;
| | - Manuela Raffatellu
- 3Department of Microbiology and Molecular Genetics, University of California, Irvine, California; and ,4Institute for Immunology, University of California, Irvine, California
| | - Hamid M. Said
- 1Departments of Medicine and Physiology/Biophysics, University of California, Irvine, California; ,2Department of Veterans Affairs Medical Center, Long Beach, California;
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Piippo N, Korkmaz A, Hytti M, Kinnunen K, Salminen A, Atalay M, Kaarniranta K, Kauppinen A. Decline in cellular clearance systems induces inflammasome signaling in human ARPE-19 cells. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2014; 1843:3038-46. [PMID: 25268952 DOI: 10.1016/j.bbamcr.2014.09.015] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Revised: 09/15/2014] [Accepted: 09/16/2014] [Indexed: 11/25/2022]
Abstract
Retinal pigment epithelium (RPE) plays a major role in the maintenance of photoreceptors, and degeneration of RPE results in the development of age-related macular degeneration (AMD). Accumulation of intracellular protein aggregates, increased oxidative stress, and chronic inflammation are all factors damaging the functionality of aged RPE cells. Here, we report that inhibition of proteasomal degradation with MG-132 and autophagy with bafilomycin A1 resulted in the release of IL-1β but not that of IL-18 in human ARPE-19 cells. NLRP3 receptor became upregulated, and caspase-1, the functional component of an inflammasome complex, was activated. In addition to accumulating intracellular protein aggregates, inhibition of degradation systems induced oxidative stress which was demonstrated by elevated amounts of intracellular 4-hydroxynonenal (HNE)-protein adducts. Along with IL-1β, exposure to MG-132 and bafilomycin A1 resulted in the secretion of IL-8. A low concentration (1pg/ml) of IL-1β was capable of triggering significant IL-8 production which also became attenuated by treatment with a specific caspase-1 inhibitor. These results suggest that decline in intracellular degradation systems results not only in increased amounts of intracellular protein aggregates and oxidative stress but also in the activation of NLRP3 inflammasomes, arisen as a result of elevated production of biologically active IL-1β.
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Affiliation(s)
- Niina Piippo
- Department of Ophthalmology, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland
| | - Ayhan Korkmaz
- Institute of Biomedicine, Physiology, University of Eastern Finland, Kuopio, Finland
| | - Maria Hytti
- Department of Ophthalmology, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland
| | - Kati Kinnunen
- Department of Ophthalmology, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland; Department of Ophthalmology, Kuopio University Hospital, Kuopio, Finland
| | - Antero Salminen
- Department of Neurology, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland; Department of Neurology, Kuopio University Hospital, Kuopio, Finland
| | - Mustafa Atalay
- Institute of Biomedicine, Physiology, University of Eastern Finland, Kuopio, Finland
| | - Kai Kaarniranta
- Department of Ophthalmology, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland; Department of Ophthalmology, Kuopio University Hospital, Kuopio, Finland
| | - Anu Kauppinen
- Department of Ophthalmology, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland; Department of Ophthalmology, Kuopio University Hospital, Kuopio, Finland.
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Babajani G, Kermode AR. Alteration of the proteostasis network of plant cells promotes the post-endoplasmic reticulum trafficking of recombinant mutant (L444P) human β-glucocerebrosidase. PLANT SIGNALING & BEHAVIOR 2014; 9:e28714. [PMID: 24713615 PMCID: PMC4091198 DOI: 10.4161/psb.28714] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Revised: 03/30/2014] [Accepted: 03/31/2014] [Indexed: 06/03/2023]
Abstract
Gaucher disease is a prevalent lysosomal storage disease characterized by a deficiency in the activity of lysosomal acid β-glucosidase (glucocerebrosidase, GCase, EC 3.2.1.45). One of the most prevalent disease-causing mutations in humans is a L444P missense mutation in the GCase protein, which results in its disrupted folding in the endoplasmic reticulum (ER) and impaired post-ER trafficking. To determine whether the post-ER trafficking of this severely malfolded protein can be restored, we expressed the mutant L444P GCase as a recombinant protein in transgenic tobacco (Nicotiana tabacum L. cv Bright Yellow 2 [BY2]) cells, in which the GCase variant was equipped with a plant signal peptide to allow for secretion upon rescued trafficking out of the ER. The recombinant L444P mutant GCase was retained in the plant endoplasmic reticulum (ER). Kifunensine and Eeyarestatin I, both inhibitors of ER-associated degradation (ERAD), and the proteostasis regulators, celastrol and MG-132, increased the steady-state levels of the mutant protein inside the plant cells and further promoted the post-ER trafficking of L444P GCase, as indicated by endoglycosidase-H sensitivity- and secretion- analyses. Transcript profiling of genes encoding ER-molecular chaperones, ER stress responsive proteins, and cytoplasmic heat shock response proteins, revealed insignificant or only very modest changes in response to the ERAD inhibitors and proteostasis regulators. An exception was the marked response to celastrol which reduced the steady-state levels of cytoplasmic HSP90 transcripts and protein. As Hsp90 participates in the targeting of misfolded proteins to the proteasome pathway, its down-modulation in response to celastrol may partly account for the mechanism of improved homeostasis of L444P GCase mediated by this triterpene.
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Affiliation(s)
- Gholamreza Babajani
- Department of Biological Sciences; Simon Fraser University; Burnaby, BC Canada
| | - Allison R Kermode
- Department of Biological Sciences; Simon Fraser University; Burnaby, BC Canada
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Zhang J, Gong F, Li L, Zhao M, Song J. Pseudomonas aeruginosa quorum-sensing molecule N-(3-oxododecanoyl) homoserine lactone attenuates lipopolysaccharide-induced inflammation by activating the unfolded protein response. Biomed Rep 2014; 2:233-238. [PMID: 24649102 DOI: 10.3892/br.2014.225] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Accepted: 01/14/2014] [Indexed: 12/13/2022] Open
Abstract
N-3-oxododecanoyl homoserine lactone (3-oxo-C12-HSL), a quorum-sensing signal molecule produced by Pseudomonas aeruginosa (P. aeruginosa), is involved in the expression of bacterial virulence factors and in the modulation of host immune responses by directly disrupting nuclear factor-κB (NF-κB) signaling and inducing cell apoptosis. The unfolded protein response (UPR) triggered by endoplasmic reticulum (ER) stress may suppress inflammatory responses in the later phase by blocking NF-κB activation. It was recently demonstrated that 3-oxo-C12-HSL may induce UPR in human aortic endothelial cells (HAECs). Therefore, 3-oxo-C12-HSL may also inhibit NF-κB activation and suppress inflammatory responses by activating UPR. However, the possible underlying mechanism has not been fully elucidated. Accordingly, we investigated the effects of 3-oxo-C12-HSL on cellular viability, UPR activation, lipopolysaccharide (LPS)-induced NF-κB activation and inflammatory response in the RAW264.7 mouse macrophage cell line. Treatment with 6.25 μM 3-oxo-C12-HSL was not found to affect the viability of RAW264.7 cells. However, pretreating RAW264.7 cells with 6.25 μM 3-oxo-C12-HSL effectively triggered UPR and increased the expression of UPR target genes, such as CCAAT/enhancer-binding protein β (C/EBP β) and CCAAT/enhancer-binding protein-homologous protein (CHOP). The expression of C/EBP β and CHOP was found to be inversely correlated with LPS-induced NF-κB activation. 3-Oxo-C12-HSL pretreatment was also shown to inhibit LPS-stimulated proinflammatory cytokine production. Hence, 3-oxo-C12-HSL may attenuate LPS-induced inflammation via UPR-mediated NF-κB inhibition without affecting cell viability. This may be another mechanism through which P. aeruginosa evades the host immune system and maintains a persistent infection.
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Affiliation(s)
- Jiangguo Zhang
- Department of Infectious Diseases, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| | - Fengyun Gong
- Department of Infectious Diseases, Pu'ai Hospital of Wuhan, Wuhan, Hubei 430032, P.R. China
| | - Ling Li
- Department of Infectious Diseases, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| | - Manzhi Zhao
- Department of Infectious Diseases, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| | - Jianxin Song
- Department of Infectious Diseases, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
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Garg AD, Kaczmarek A, Krysko O, Vandenabeele P, Krysko DV, Agostinis P. ER stress-induced inflammation: does it aid or impede disease progression? Trends Mol Med 2012; 18:589-98. [PMID: 22883813 DOI: 10.1016/j.molmed.2012.06.010] [Citation(s) in RCA: 310] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2012] [Revised: 06/19/2012] [Accepted: 06/28/2012] [Indexed: 12/16/2022]
Abstract
Different lines of research have revealed that pathways activated by the endoplasmic reticulum (ER) stress response induce sterile inflammation. When activated, all three sensors of the unfolded protein response (UPR), PERK, IRE1, and ATF6, participate in upregulating inflammatory processes. ER stress in various cells plays an important role in the pathogenesis of several diseases, including obesity, type 2 diabetes, cancer, and intestinal bowel and airway diseases. Moreover, it has been suggested that ER stress-induced inflammation contributes substantially to disease progression. However, this generalization can be challenged at least in the case of cancer. In this review, we emphasize that ER stress can either aid or impede disease progression via inflammatory pathways depending on the cell type, disease stage, and type of ER stressor.
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Affiliation(s)
- Abhishek D Garg
- Department of Cellular and Molecular Medicine, University of Leuven (KU Leuven), Leuven, Belgium
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Cells expressing the C/EBPbeta isoform, LIP, engulf their neighbors. PLoS One 2012; 7:e41807. [PMID: 22860016 PMCID: PMC3409234 DOI: 10.1371/journal.pone.0041807] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2012] [Accepted: 06/29/2012] [Indexed: 01/05/2023] Open
Abstract
Descriptions of various processes that lead to cell-in-cell structures have been reported for decades. The exact molecular mechanism(s) of their formation and the physiological significance of cell-in-cell structures remain poorly understood. We had previously shown that an isoform of the CCAAT/enhancer-binding protein beta (C/EBPbeta) transcription factor, liver-enriched inhibitory protein (LIP), induces cell death in human breast cancer cells and stimulates autophagy. Here we describe a non-apoptotic cell death process where LIP mediates the engulfment of neighboring cells. We provide evidence of LIP-mediated engulfment via DNA profiling, fluorescent imaging and cell sorting studies, as well as ultrastructure analysis of LIP-expressing MDA-MB-468 breast cancer cells. Our work illustrates that expression of a specific transcription factor, LIP, can mediate cell engulfment.
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