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Fornasiero F, Scapin C, Vitadello M, Pizzo P, Gorza L. Active nNOS Is Required for Grp94-Induced Antioxidant Cytoprotection: A Lesson from Myogenic to Cancer Cells. Int J Mol Sci 2022; 23:ijms23062915. [PMID: 35328344 PMCID: PMC8954037 DOI: 10.3390/ijms23062915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 03/02/2022] [Accepted: 03/04/2022] [Indexed: 11/16/2022] Open
Abstract
The endoplasmic reticulum (ER) chaperone Grp94/gp96 appears to be involved in cytoprotection without being required for cell survival. This study compared the effects of Grp94 protein levels on Ca2+ homeostasis, antioxidant cytoprotection and protein–protein interactions between two widely studied cell lines, the myogenic C2C12 and the epithelial HeLa, and two breast cancer cell lines, MDA-MB-231 and HS578T. In myogenic cells, but not in HeLa, Grp94 overexpression exerted cytoprotection by reducing ER Ca2+ storage, due to an inhibitory effect on SERCA2. In C2C12 cells, but not in HeLa, Grp94 co-immunoprecipitated with non-client proteins, such as nNOS, SERCA2 and PMCA, which co-fractionated by sucrose gradient centrifugation in a distinct, medium density, ER vesicular compartment. Active nNOS was also required for Grp94-induced cytoprotection, since its inhibition by L-NNA disrupted the co-immunoprecipitation and co-fractionation of Grp94 with nNOS and SERCA2, and increased apoptosis. Comparably, only the breast cancer cell line MDA-MB-231, which showed Grp94 co-immunoprecipitation with nNOS, SERCA2 and PMCA, increased oxidant-induced apoptosis after nNOS inhibition or Grp94 silencing. These results identify the Grp94-driven multiprotein complex, including active nNOS as mechanistically involved in antioxidant cytoprotection by means of nNOS activity and improved Ca2+ homeostasis.
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Affiliation(s)
- Filippo Fornasiero
- Department of Biomedical Sciences, University of Padova, 35131 Padova, Italy; (F.F.); (C.S.); (P.P.)
| | - Cristina Scapin
- Department of Biomedical Sciences, University of Padova, 35131 Padova, Italy; (F.F.); (C.S.); (P.P.)
| | - Maurizio Vitadello
- CNR-Neuroscience Institute, National Research Council, 35131 Padova, Italy;
| | - Paola Pizzo
- Department of Biomedical Sciences, University of Padova, 35131 Padova, Italy; (F.F.); (C.S.); (P.P.)
- CNR-Neuroscience Institute, National Research Council, 35131 Padova, Italy;
| | - Luisa Gorza
- Department of Biomedical Sciences, University of Padova, 35131 Padova, Italy; (F.F.); (C.S.); (P.P.)
- Correspondence:
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Fares M, Oerther S, Hultenby K, Gubrianska D, Zhao Y, Abedi-Valugerdi M, Hassan M. COL-3-Induced Molecular and Ultrastructural Alterations in K562 Cells. J Pers Med 2022; 12:jpm12010042. [PMID: 35055357 PMCID: PMC8778770 DOI: 10.3390/jpm12010042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 12/28/2021] [Accepted: 12/30/2021] [Indexed: 01/05/2023] Open
Abstract
Tetracycline-3 (4-dedimethylamino sancycline, COL-3) is a non-antibiotic tetracycline derivative. COL-3 exerts potent anti-metalloproteinase activity and its antitumor effects have been reported both in vitro and in vivo. In this study, we investigated the mechanisms of COL-3-induced cytotoxicity in a chronic myeloid leukemia cell line, K562, characterized by the BCR-ABL fusion protein. COL-3 induced K562 cell death in a concentration-dependent manner with an IC50 of 10.8 µg/mL and exhibited features of both apoptosis and necrosis. However, flow cytometry analysis revealed that necrotic cells dominated over the early and late apoptotic cells upon treatment with COL-3. Transmission electron microscopy analysis in combination with Western blotting (WB) analysis revealed early mitochondrial swelling accompanied by the early release of cytochrome c and truncated apoptosis inducing factor (tAIF). In addition, ultrastructural changes were detected in the endoplasmic reticulum (ER). COL-3 affected the levels of glucose-regulated protein-94 (GRP94) and resulted in m-calpain activation. DNA double strand breaks as a signature for DNA damage was also confirmed using an antibody against γH2AX. WB analyses did not demonstrate caspase activation, while Bcl-xL protein remained unaffected. In conclusion, COL-3-induced cell death involves DNA damage as well as mitochondrial and ER perturbation with features of paraptosis and programmed necrosis.
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Affiliation(s)
- Mona Fares
- Experimental Cancer Medicine, Division of Biomolecular and Cellular Medicine (BCM), Department of Laboratory Medicine, Novum, Karolinska Institutet, 141 57 Huddinge, Sweden; (M.F.); (S.O.); (D.G.); (Y.Z.); (M.A.-V.)
- Clinical Research Center and Center for Allogeneic Stem Cell Transplantation, Karolinska University Hospital, 141 86 Huddinge, Sweden
| | - Sandra Oerther
- Experimental Cancer Medicine, Division of Biomolecular and Cellular Medicine (BCM), Department of Laboratory Medicine, Novum, Karolinska Institutet, 141 57 Huddinge, Sweden; (M.F.); (S.O.); (D.G.); (Y.Z.); (M.A.-V.)
- Clinical Research Center and Center for Allogeneic Stem Cell Transplantation, Karolinska University Hospital, 141 86 Huddinge, Sweden
| | - Kjell Hultenby
- Department of Laboratory Medicine, Karolinska Institutet and Karolinska University Hospital, 141 57 Huddinge, Sweden;
| | - Danica Gubrianska
- Experimental Cancer Medicine, Division of Biomolecular and Cellular Medicine (BCM), Department of Laboratory Medicine, Novum, Karolinska Institutet, 141 57 Huddinge, Sweden; (M.F.); (S.O.); (D.G.); (Y.Z.); (M.A.-V.)
- Clinical Research Center and Center for Allogeneic Stem Cell Transplantation, Karolinska University Hospital, 141 86 Huddinge, Sweden
| | - Ying Zhao
- Experimental Cancer Medicine, Division of Biomolecular and Cellular Medicine (BCM), Department of Laboratory Medicine, Novum, Karolinska Institutet, 141 57 Huddinge, Sweden; (M.F.); (S.O.); (D.G.); (Y.Z.); (M.A.-V.)
- Clinical Research Center and Center for Allogeneic Stem Cell Transplantation, Karolinska University Hospital, 141 86 Huddinge, Sweden
| | - Manuchehr Abedi-Valugerdi
- Experimental Cancer Medicine, Division of Biomolecular and Cellular Medicine (BCM), Department of Laboratory Medicine, Novum, Karolinska Institutet, 141 57 Huddinge, Sweden; (M.F.); (S.O.); (D.G.); (Y.Z.); (M.A.-V.)
- Clinical Research Center and Center for Allogeneic Stem Cell Transplantation, Karolinska University Hospital, 141 86 Huddinge, Sweden
| | - Moustapha Hassan
- Experimental Cancer Medicine, Division of Biomolecular and Cellular Medicine (BCM), Department of Laboratory Medicine, Novum, Karolinska Institutet, 141 57 Huddinge, Sweden; (M.F.); (S.O.); (D.G.); (Y.Z.); (M.A.-V.)
- Clinical Research Center and Center for Allogeneic Stem Cell Transplantation, Karolinska University Hospital, 141 86 Huddinge, Sweden
- Correspondence:
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Gorza L, Germinario E, Tibaudo L, Vitadello M, Tusa C, Guerra I, Bondì M, Salmaso S, Caliceti P, Vitiello L, Danieli-Betto D. Chronic Systemic Curcumin Administration Antagonizes Murine Sarcopenia and Presarcopenia. Int J Mol Sci 2021; 22:ijms222111789. [PMID: 34769220 PMCID: PMC8584127 DOI: 10.3390/ijms222111789] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Revised: 10/28/2021] [Accepted: 10/29/2021] [Indexed: 12/28/2022] Open
Abstract
Curcumin administration attenuates muscle disuse atrophy, but its effectiveness against aging-induced, selective loss of mass or force (presarcopenia or asthenia/dynopenia), or combined loss (sarcopenia), remains controversial. A new systemic curcumin treatment was developed and tested in 18-month-old C57BL6J and C57BL10ScSn male mice. The effects on survival, liver toxicity, loss of muscle mass and force, and satellite cell responsivity and commitment were evaluated after 6-month treatment. Although only 24-month-old C57BL10ScSn mice displayed age-related muscle impairment, curcumin significantly increased survival of both strains (+20–35%), without signs of liver toxicity. Treatment prevented sarcopenia in soleus and presarcopenia in EDL of C57BL10ScSn mice, whereas it did not affect healthy-aged muscles of C57BL6J. Curcumin-treated old C57BL10ScSn soleus preserved type-1 myofiber size and increased type-2A one, whereas EDL maintained adult values of total myofiber number and fiber-type composition. Mechanistically, curcumin only partially prevented the age-related changes in protein level and subcellular distribution of major costamere components and regulators. Conversely, it affected satellite cells, by maintaining adult levels of myofiber maturation in old regenerating soleus and increasing percentage of isolated, MyoD-positive satellite cells from old hindlimb muscles. Therefore, curcumin treatment successfully prevents presarcopenia and sarcopenia development by improving satellite cell commitment and recruitment.
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Affiliation(s)
- Luisa Gorza
- Department of Biomedical Sciences, University of Padova, 35131 Padova, Italy; (E.G.); (M.V.); (C.T.); (I.G.); (M.B.); (D.D.-B.)
- Correspondence:
| | - Elena Germinario
- Department of Biomedical Sciences, University of Padova, 35131 Padova, Italy; (E.G.); (M.V.); (C.T.); (I.G.); (M.B.); (D.D.-B.)
| | - Lucia Tibaudo
- Department of Biology, University of Padova, 35131 Padova, Italy; (L.T.); (L.V.)
| | - Maurizio Vitadello
- Department of Biomedical Sciences, University of Padova, 35131 Padova, Italy; (E.G.); (M.V.); (C.T.); (I.G.); (M.B.); (D.D.-B.)
| | - Chiara Tusa
- Department of Biomedical Sciences, University of Padova, 35131 Padova, Italy; (E.G.); (M.V.); (C.T.); (I.G.); (M.B.); (D.D.-B.)
| | - Irene Guerra
- Department of Biomedical Sciences, University of Padova, 35131 Padova, Italy; (E.G.); (M.V.); (C.T.); (I.G.); (M.B.); (D.D.-B.)
| | - Michela Bondì
- Department of Biomedical Sciences, University of Padova, 35131 Padova, Italy; (E.G.); (M.V.); (C.T.); (I.G.); (M.B.); (D.D.-B.)
| | - Stefano Salmaso
- Department of Pharmaceutical Sciences, University of Padova, 35131 Padova, Italy; (S.S.); (P.C.)
| | - Paolo Caliceti
- Department of Pharmaceutical Sciences, University of Padova, 35131 Padova, Italy; (S.S.); (P.C.)
| | - Libero Vitiello
- Department of Biology, University of Padova, 35131 Padova, Italy; (L.T.); (L.V.)
| | - Daniela Danieli-Betto
- Department of Biomedical Sciences, University of Padova, 35131 Padova, Italy; (E.G.); (M.V.); (C.T.); (I.G.); (M.B.); (D.D.-B.)
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Curcumin and Nano-Curcumin Mitigate Copper Neurotoxicity by Modulating Oxidative Stress, Inflammation, and Akt/GSK-3β Signaling. Molecules 2021; 26:molecules26185591. [PMID: 34577062 PMCID: PMC8467357 DOI: 10.3390/molecules26185591] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 09/10/2021] [Accepted: 09/11/2021] [Indexed: 12/31/2022] Open
Abstract
Copper (Cu) is essential for multiple biochemical processes, and copper sulphate (CuSO4) is a pesticide used for repelling pests. Accidental or intentional intoxication can induce multiorgan toxicity and could be fatal. Curcumin (CUR) is a potent antioxidant, but its poor systemic bioavailability is the main drawback in its therapeutic uses. This study investigated the protective effect of CUR and N-CUR on CuSO4-induced cerebral oxidative stress, inflammation, and apoptosis in rats, pointing to the possible involvement of Akt/GSK-3β. Rats received 100 mg/kg CuSO4 and were concurrently treated with CUR or N-CUR for 7 days. Cu-administered rats exhibited a remarkable increase in cerebral malondialdehyde (MDA), NF-κB p65, TNF-α, and IL-6 associated with decreased GSH, SOD, and catalase. Cu provoked DNA fragmentation, upregulated BAX, caspase-3, and p53, and decreased BCL-2 in the brain of rats. N-CUR and CUR ameliorated MDA, NF-κB p65, and pro-inflammatory cytokines, downregulated pro-apoptotic genes, upregulated BCL-2, and enhanced antioxidants and DNA integrity. In addition, both N-CUR and CUR increased AKT Ser473 and GSK-3β Ser9 phosphorylation in the brain of Cu-administered rats. In conclusion, N-CUR and CUR prevent Cu neurotoxicity by attenuating oxidative injury, inflammatory response, and apoptosis and upregulating AKT/GSK-3β signaling. The neuroprotective effect of N-CUR was more potent than CUR.
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Nano-Curcumin Prevents Cardiac Injury, Oxidative Stress and Inflammation, and Modulates TLR4/NF-κB and MAPK Signaling in Copper Sulfate-Intoxicated Rats. Antioxidants (Basel) 2021; 10:antiox10091414. [PMID: 34573046 PMCID: PMC8469340 DOI: 10.3390/antiox10091414] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 08/31/2021] [Accepted: 09/01/2021] [Indexed: 12/12/2022] Open
Abstract
Copper (Cu) is essential for a plethora of biological processes; however, its high redox reactivity renders it potentially toxic. This study investigated the protective effect of curcumin (CUR) and nano-CUR (N-CUR) against Cu cardiotoxicity, emphasizing the role of oxidative stress, TLR4/NF-κB and mitogen-activated protein kinase (MAPK) signaling and cell death in rats. Rats received 100 mg/kg copper sulfate (CuSO4), a pesticide used for repelling pests, and were concurrently treated with CUR or N-CUR for 7 days. Cu caused cardiac injury manifested by elevated serum cardiac troponin I (cTnI), creatine kinase (CK)-MB, and lactate dehydrogenase (LDH), as well as histopathological alterations. Cardiac malondialdehyde (MDA), NF-κB p65, TNF-α, and IL-6 were increased, and reduced glutathione (GSH), superoxide dismutase (SOD) and catalase were decreased in Cu-treated rats. CUR and N-CUR prevented cardiac tissue injury, decreased serum cTnI, CK-MB, and LDH, and cardiac MDA, NF-κB p65, TNF-α, and IL-6, and enhanced cellular antioxidants. CUR and N-CUR downregulated TLR4 and AP-1, and decreased the phosphorylation levels of p38 MAPK, JNK, and ERK1/2. In addition, CUR and N-CUR increased cardiac Bcl-2 and BAG-1, decreased Bax and caspase-3, and prevented DNA fragmentation. In conclusion, N-CUR prevents Cu cardiotoxicity by attenuating oxidative injury, inflammatory response, and apoptosis, and modulating TLR4/NF-κB and MAPK signaling. The cardioprotective effect of N-CUR was more potent than the native form.
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Kavukcu SB, Çakır S, Karaer A, Türkmen H, Rethinam S. Curcumin nanoparticles supported gelatin-collagen scaffold: Preparation, characterization, and in vitro study. Toxicol Rep 2021; 8:1475-1479. [PMID: 34401357 PMCID: PMC8353379 DOI: 10.1016/j.toxrep.2021.07.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 06/08/2021] [Accepted: 07/30/2021] [Indexed: 11/17/2022] Open
Abstract
Curcumin nanoparticules Biofilms (CNs-BF) was successfully prepared from gelatin, collagen and Curcumin nanoparticules (CNs). CNs-BF had necessary mechanical strength and biocompatibility of biofilm production. Promising material for tissue regeneration application. An alternative method for biofilm production.
It is possible to reveal the potential of water-insoluble drugs by increasing their solubility in water with some nanotechnology techniques. Nanosuspension technology can solve this problem by increasing the water solubility and as well as bioavailability of these drugs. The present work is pointed at the evaluation of nanosuspension of curcumin, a poorly water-soluble drug. The Curcumin nanoparticules (CNs) were prepared with ultrasonnication method using dichloromethane as solvent and water as antisolvent and characterized via spectroscopic methods (UV–vis and FT-IR) and Scanning Electron Microscopy (SEM). Curcumin nanoparticules Biofilms (CNs-BF) supported gelatin-collagen scaffold were prepared. Curcumin nanoparticles were obtained by nanosuspension technique. And then, to overcome the limited effects of curcumin such as solubility and bioavailability, nanoparticle films were prepared by incorporating it into the structure of biocompatible collagen-gelatin scaffolds. Curcumin is limited by some factors that limit its clinical applicability, such as low oral bioavailability, poor water solubility and rapid degradation. However, they can be applied clinically when they are included in the structure of biocompatible gelatin-collagen scaffolds.
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Affiliation(s)
| | - Sinem Çakır
- Science Faculty, Chemistry Department, Ege University, 35100, Bornova, Izmir, Turkey
| | - Aslıhan Karaer
- Science Faculty, Chemistry Department, Ege University, 35100, Bornova, Izmir, Turkey
| | - Hayati Türkmen
- Science Faculty, Chemistry Department, Ege University, 35100, Bornova, Izmir, Turkey
| | - Senthil Rethinam
- School of Natural and Applied Science, Ege University, 35100, Bornova, Izmir, Turkey.,School of Bio & Chemical Engineering, Sathyabama University, Chennai, 600 199, Tamilnadu, India
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Structural Characterization and Digestibility of Curcumin Loaded Octenyl Succinic Nanoparticles. NANOMATERIALS 2019; 9:nano9081073. [PMID: 31357427 PMCID: PMC6723743 DOI: 10.3390/nano9081073] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 07/15/2019] [Accepted: 07/22/2019] [Indexed: 11/17/2022]
Abstract
Curcumin displays anti-cancer, anti-inflammatory and anti-obesity properties but its water insolubility limits the wholesome utility. In this study, curcumin has been encapsulated in an amphiphilic biopolymer to enhance its water solubility. This was accomplished through self-assembly of octenyl succinic anhydride-short glucan chains (OSA-SGC) and curcumin. The nanoparticles were prepared with the degree of substitution (DS) of 0.112, 0.286 and 0.342 of OSA. Thus prepared nanoparticles were in the range of 150-200 nm and display high encapsulation efficiency and high loading capacity of curcumin. The Fourier-transform infrared (FTIR) and X-ray diffraction analyses confirmed the curcumin loading in the OSA-SGC nanoparticles. The complexes possessed a V-type starch structure. The thermo gravimetric analysis (TGA) revealed the thermal stability of encapsulated curcumin. The OSA-SGC nanoparticles greatly improved the curcumin release and dissolution, and in-turn promoted the sustained release.
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Zhang Y, Liu X, Zhang L, Li X, Zhou Z, Jiao L, Shao Y, Li M, Leng B, Zhou Y, Liu T, Liu Q, Shan H, Du Z. Metformin Protects against H 2O 2-Induced Cardiomyocyte Injury by Inhibiting the miR-1a-3p/GRP94 Pathway. MOLECULAR THERAPY. NUCLEIC ACIDS 2018; 13:189-197. [PMID: 30292140 PMCID: PMC6172474 DOI: 10.1016/j.omtn.2018.09.001] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 08/30/2018] [Accepted: 09/02/2018] [Indexed: 01/30/2023]
Abstract
Ischemia-reperfusion (I/R) injury is a major side effect of the reperfusion treatment of the ischemic heart. Few therapies are available for the effective prevention of this injury caused by the oxidative stress-induced cardiomyocyte apoptosis. Metformin was shown to have a potential cardiac protective effect and ability to reduce cardiac events, but the exact mechanism remains unclear. Here, we aimed to confirm and investigate the mechanisms underlying potential metformin activity against I/R injury in response to oxidative stress. We determined that the expression of miR-1a-3p was significantly increased in neonatal rat ventricular cells (NRVCs), which were exposed to H2O2in vitro and in the hearts of mice that underwent the I/R injury. MiR-1a-3p was shown to target the 3′ UTR of GRP94, which results in the accumulation of un- or misfolded proteins, leading to the endoplasmic reticulum (ER) stress. The obtained results demonstrated that C/EBP β directly induces the upregulation of miR-1a-3p by binding to its promoter. Furthermore, as a direct allosteric AMPK activator, metformin was shown to activate AMPK and significantly reduce C/EBP β and miR-1a-3p levels compared with those in the control group. In conclusion, metformin protects cardiomyocytes against H2O2 damage through the AMPK/C/EBP β/miR-1a-3p/GRP94 pathway, which indicates that metformin may be applied for the treatment of I/R injury.
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Affiliation(s)
- Ying Zhang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Xue Liu
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Lu Zhang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Xuelian Li
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Zhongqiu Zhou
- Institute of Clinical Pharmacy, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Lei Jiao
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Yingchun Shao
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Mengmeng Li
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Bing Leng
- Pharmacy Intravenous Admixture Service, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Yuhong Zhou
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Tianyi Liu
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China; Department of Pharmaceutics, Dalian Children's Hospital, Dalian, Liaoning 116001, P.R. China
| | - Qiushuang Liu
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Hongli Shan
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China.
| | - Zhimin Du
- Institute of Clinical Pharmacy, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China.
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Xu C, Guo Z, Zhao C, Zhang X, Wang Z. Potential mechanism and drug candidates for sepsis-induced acute lung injury. Exp Ther Med 2018; 15:4689-4696. [PMID: 29805488 PMCID: PMC5952104 DOI: 10.3892/etm.2018.6001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 01/05/2018] [Indexed: 01/11/2023] Open
Abstract
The present study aimed to explore the mechanisms underlying sepsis-induced acute lung injury (ALI) and identify more effective therapeutic strategies to treat it. The gene expression data set GSE10474 was downloaded and assessed to identify differentially expressed genes (DEGs). Principal component analysis, functional enrichment analysis and differential co-expression analysis of DEGs were performed. Furthermore, potential target drugs for key DEGs were assessed. A total of 209 DEGs, including 107 upregulated and 102 downregulated genes were screened. A number of DEGs, including zinc finger and BTB domain containing 17 (ZBTB17), heat shock protein 90 kDa β, member 1 (HSP90B1) and major histocompatibility complex, class II, DR α were identified. Furthermore, gene ontology terms including antigen processing and presentation, glycerophospholipid metabolism, transcriptional misregulation in cancer, thyroid hormone synthesis and pathways associated with diseases, such as asthma were identified. In addition, a differential co-expression network containing ubiquitin-conjugating enzyme E2 D4, putative and tubulin, γ complex associated protein 3 was constructed. Furthermore, a number of gene-drug interactions, including between HSP90B1 and adenosine-5′-diphosphate and radicicol, were identified. Therefore, DEGs, including ZBTB17 and HSP90B1, may be important in the pathogenesis of sepsis-induced ALI. Furthermore, drugs including adenosine-5′-diphosphate may be novel drug candidates to treat patients with ALI.
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Affiliation(s)
- Chenyuan Xu
- Department of Thoracic Surgery, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, P.R. China
| | - Zhengqiang Guo
- Department of Thoracic Surgery, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, P.R. China
| | - Chuncheng Zhao
- Department of Thoracic Surgery, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, P.R. China
| | - Xufeng Zhang
- Department of Thoracic Surgery, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, P.R. China
| | - Zheng Wang
- Department of Thoracic Surgery, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, P.R. China
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Gera M, Sharma N, Ghosh M, Huynh DL, Lee SJ, Min T, Kwon T, Jeong DK. Nanoformulations of curcumin: an emerging paradigm for improved remedial application. Oncotarget 2017; 8:66680-66698. [PMID: 29029547 PMCID: PMC5630447 DOI: 10.18632/oncotarget.19164] [Citation(s) in RCA: 163] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Accepted: 06/29/2017] [Indexed: 12/26/2022] Open
Abstract
Curcumin is a natural polyphenol and essential curcuminoid derived from the rhizome of the medicinal plant Curcuma longa (L.) is universally acknowledged as “Wonder drug of life”. It is a vital consumable and restorative herb, commonly keened for several ailments such as cancer, arthritis, pain, bruises, gastrointestinal quandaries, swelling and much more. Despite its enormous curative potential, the poor aqueous solubility and consequently, minimal systemic bioavailability with rapid degradation are some of the major factors which restrict the utilization of curcumin at medical perspective. However, to improve its clinically relevant parameters, nanoformulation of curcumin is emerging as a novel substitute for their superior therapeutic modality. It enhances its aqueous solubility and targeted delivery to the tissue of interest that prompts to enhance the bioavailability, better drug conveyance, and more expeditious treatment. Subsequent investigations are endeavored to enhance the bio-distribution of native curcumin by modifying with felicitous nano-carriers for encapsulation. In this review, we specifically focus on the recent nanotechnology based implementations applied for overcoming the innate constraints of native curcumin and additionally the associated challenges which restrict its potential therapeutic applications both in vivo and in-vitro studies, as well as their detailed mechanism of action, have additionally been discussed.
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Affiliation(s)
- Meeta Gera
- Department of Animal Biotechnology, Faculty of Biotechnology, Jeju National University, Jeju, Republic of Korea
| | - Neelesh Sharma
- Division of Veterinary Medicine, Faculty of Veterinary Science and Animal Husbandry, Sher-e-Kashmi University of Agricultural Sciences and Technology, R.S. Pura, Jammu, India
| | - Mrinmoy Ghosh
- Department of Animal Biotechnology, Faculty of Biotechnology, Jeju National University, Jeju, Republic of Korea
| | - Do Luong Huynh
- Department of Animal Biotechnology, Faculty of Biotechnology, Jeju National University, Jeju, Republic of Korea
| | - Sung Jin Lee
- Department of Animal Biotechnology, College of Animal Bioscience and Technology, Kangwon National University, Gangwon-do, Republic of Korea
| | - Taesun Min
- Department of Animal Biotechnology, Faculty of Biotechnology, Jeju National University, Jeju, Republic of Korea
| | - Taeho Kwon
- Department of Animal Biotechnology, Faculty of Biotechnology, Jeju National University, Jeju, Republic of Korea.,Laboratory of Animal Genetic Engineering and Stem Cell Biology, Subtropical/Tropical Organism Gene Bank, Jeju National University, Jeju, Republic of Korea
| | - Dong Kee Jeong
- Department of Animal Biotechnology, Faculty of Biotechnology, Jeju National University, Jeju, Republic of Korea.,Laboratory of Animal Genetic Engineering and Stem Cell Biology, Subtropical/Tropical Organism Gene Bank, Jeju National University, Jeju, Republic of Korea
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11
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Li H, Tian J, Wu A, Wang J, Ge C, Sun Z. Self-assembled silk fibroin nanoparticles loaded with binary drugs in the treatment of breast carcinoma. Int J Nanomedicine 2016; 11:4373-80. [PMID: 27621628 PMCID: PMC5015876 DOI: 10.2147/ijn.s108633] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Self-assembled nanoparticles of the natural polymer, silk fibroin (SF), are a very promising candidate in drug delivery due to their biocompatible and biodegradable properties. In this study, SF nanoparticles loaded with 5-fluorouracil (5-FU) and curcumin with size 217±0.4 nm and with a loading efficacy of 45% and 15% for 5-FU and curcumin, respectively, were prepared. The in vitro release effect of 5-FU and curcumin from nanoparticles was evaluated as ~100% and ~5%, respectively. It has been revealed that the application of such a nanodrug can increase the level of reactive oxygen species, which in turn induces apoptosis of cancer cells in vitro. Animal studies have shown that tumors could be noticeably reduced after being injected with the drug-entrapped nanoparticles. More apoptotic cells were found after 7 days of treatment with SF nanoparticles by a hematoxylin–eosin staining assay. These results demonstrate the future potential of nanoparticle-loaded binary drugs in the treatment of breast cancer.
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Affiliation(s)
- Hui Li
- School of Biological and Basic Medical Science
| | - Jian Tian
- School of Biological and Basic Medical Science; School of Radiological & Interdisciplinary Sciences, Soochow University
| | - Anqing Wu
- School of Radiological & Interdisciplinary Sciences, Soochow University
| | - Jiamin Wang
- School of Biological and Basic Medical Science
| | - Cuicui Ge
- School of Radiological & Interdisciplinary Sciences, Soochow University
| | - Ziling Sun
- School of Biological and Basic Medical Science; School of Radiological & Interdisciplinary Sciences, Soochow University; Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, Jiangsu, People's Republic of China
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12
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Corpeno R, Dworkin B, Cacciani N, Salah H, Bergman HM, Ravara B, Vitadello M, Gorza L, Gustafson AM, Hedström Y, Petersson J, Feng HZ, Jin JP, Iwamoto H, Yagi N, Artemenko K, Bergquist J, Larsson L. Time course analysis of mechanical ventilation-induced diaphragm contractile muscle dysfunction in the rat. J Physiol 2014; 592:3859-80. [PMID: 25015920 DOI: 10.1113/jphysiol.2014.277962] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Controlled mechanical ventilation (CMV) plays a key role in triggering the impaired diaphragm muscle function and the concomitant delayed weaning from the respirator in critically ill intensive care unit (ICU) patients. To date, experimental and clinical studies have primarily focused on early effects on the diaphragm by CMV, or at specific time points. To improve our understanding of the mechanisms underlying the impaired diaphragm muscle function in response to mechanical ventilation, we have performed time-resolved analyses between 6 h and 14 days using an experimental rat ICU model allowing detailed studies of the diaphragm in response to long-term CMV. A rapid and early decline in maximum muscle fibre force and preceding muscle fibre atrophy was observed in the diaphragm in response to CMV, resulting in an 85% reduction in residual diaphragm fibre function after 9-14 days of CMV. A modest loss of contractile proteins was observed and linked to an early activation of the ubiquitin proteasome pathway, myosin:actin ratios were not affected and the transcriptional regulation of myosin isoforms did not show any dramatic changes during the observation period. Furthermore, small angle X-ray diffraction analyses demonstrate that myosin can bind to actin in an ATP-dependent manner even after 9-14 days of exposure to CMV. Thus, quantitative changes in muscle fibre size and contractile proteins are not the dominating factors underlying the dramatic decline in diaphragm muscle function in response to CMV, in contrast to earlier observations in limb muscles. The observed early loss of subsarcolemmal neuronal nitric oxide synthase activity, onset of oxidative stress, intracellular lipid accumulation and post-translational protein modifications strongly argue for significant qualitative changes in contractile proteins causing the severely impaired residual function in diaphragm fibres after long-term mechanical ventilation. For the first time, the present study demonstrates novel changes in the diaphragm structure/function and underlying mechanisms at the gene, protein and cellular levels in response to CMV at a high temporal resolution ranging from 6 h to 14 days.
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Affiliation(s)
- R Corpeno
- Department of Neuroscience, Clinical Neurophysiology, Uppsala University, Sweden Department of Physiology and Pharmacology, Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden
| | - B Dworkin
- Department of Neuroscience, Clinical Neurophysiology, Uppsala University, Sweden Department of Physiology and Pharmacology, Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - N Cacciani
- Department of Neuroscience, Clinical Neurophysiology, Uppsala University, Sweden Department of Physiology and Pharmacology, Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden
| | - H Salah
- Department of Neuroscience, Clinical Neurophysiology, Uppsala University, Sweden Department of Physiology and Pharmacology, Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden
| | - H-M Bergman
- Department of Chemistry-Biomedical Center, Analytical Chemistry and SciLifeLab, Uppsala University, Sweden
| | - B Ravara
- Department of Biomedical Sciences, University of Padova, Italy
| | - M Vitadello
- Department of Biomedical Sciences, University of Padova, Italy CNR-Institute of Neuroscience, Padova section, Italy
| | - L Gorza
- Department of Biomedical Sciences, University of Padova, Italy
| | - A-M Gustafson
- Department of Neuroscience, Clinical Neurophysiology, Uppsala University, Sweden
| | - Y Hedström
- Department of Neuroscience, Clinical Neurophysiology, Uppsala University, Sweden Department of Physiology and Pharmacology, Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden
| | - J Petersson
- Department of Neuroscience, Clinical Neurophysiology, Uppsala University, Sweden
| | - H-Z Feng
- Department of Physiology, Wayne State University, Detroit, MI, USA
| | - J-P Jin
- Department of Physiology, Wayne State University, Detroit, MI, USA
| | - H Iwamoto
- Japan Synchrotron Radiation Research Institute, Sayo-cho, Sayo-gun, Hyogo, Japan
| | - N Yagi
- Japan Synchrotron Radiation Research Institute, Sayo-cho, Sayo-gun, Hyogo, Japan
| | - K Artemenko
- Department of Chemistry-Biomedical Center, Analytical Chemistry and SciLifeLab, Uppsala University, Sweden
| | - J Bergquist
- Department of Chemistry-Biomedical Center, Analytical Chemistry and SciLifeLab, Uppsala University, Sweden
| | - L Larsson
- Department of Neuroscience, Clinical Neurophysiology, Uppsala University, Sweden Department of Physiology and Pharmacology, Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden
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13
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Vitadello M, Gherardini J, Gorza L. The stress protein/chaperone Grp94 counteracts muscle disuse atrophy by stabilizing subsarcolemmal neuronal nitric oxide synthase. Antioxid Redox Signal 2014; 20:2479-96. [PMID: 24093939 PMCID: PMC4025603 DOI: 10.1089/ars.2012.4794] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
AIMS Redox and growth-factor imbalance fosters muscle disuse atrophy. Since the endoplasmic-reticulum chaperone Grp94 is required for folding insulin-like growth factors (IGFs) and for antioxidant cytoprotection, we investigated its involvement in muscle mass loss due to inactivity. RESULTS Rat soleus muscles were transfected in vivo and analyzed after 7 days of hindlimb unloading, an experimental model of muscle disuse atrophy, or standard caging. Increased muscle protein carbonylation and decreased Grp94 protein levels (p<0.05) characterized atrophic unloaded solei. Recombinant Grp94 expression significantly reduced atrophy of transfected myofibers, compared with untransfected and empty-vector transfected ones (p<0.01), and decreased the percentage of carbonylated myofibers (p=0.001). Conversely, expression of two different N-terminal deleted Grp94 species did not attenuate myofiber atrophy. No change in myofiber trophism was detected in transfected ambulatory solei. The absence of effects on atrophic untransfected myofibers excluded a major role for IGFs folded by recombinant Grp94. Immunoprecipitation and confocal microscopy assays to investigate chaperone interaction with muscle atrophy regulators identified 160 kDa neuronal nitric oxide synthase (nNOS) as a new Grp94 partner. Unloading was demonstrated to untether nNOS from myofiber subsarcolemma; here, we show that such nNOS localization, revealed by means of NADPH-diaphorase histochemistry, appeared preserved in unloaded myofibers expressing recombinant Grp94, compared to those transfected with the empty vector or deleted Grp94 cDNA (p<0.02). INNOVATION Grp94 interacts with nNOS and prevents its untethering from sarcolemma in unloaded myofibers. CONCLUSION Maintenance of Grp94 expression is sufficient to counter unloading atrophy and oxidative stress by mechanistically stabilizing nNOS-multiprotein complex at the myofiber sarcolemma.
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14
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Vitadello M, Germinario E, Ravara B, Libera LD, Danieli-Betto D, Gorza L. Curcumin counteracts loss of force and atrophy of hindlimb unloaded rat soleus by hampering neuronal nitric oxide synthase untethering from sarcolemma. J Physiol 2014; 592:2637-52. [PMID: 24710058 DOI: 10.1113/jphysiol.2013.268672] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Antioxidant administration aimed to antagonize the development and progression of disuse muscle atrophy provided controversial results. Here we investigated the effects of curcumin, a vegetal polyphenol with pleiotropic biological activity, because of its ability to upregulate glucose-regulated protein 94 kDa (Grp94) expression in myogenic cells. Grp94 is a sarco-endoplasmic reticulum chaperone, the levels of which decrease significantly in unloaded muscle. Rats were injected intraperitoneally with curcumin and soleus muscle was analysed after 7 days of hindlimb unloading or standard caging. Curcumin administration increased Grp94 protein levels about twofold in muscles of ambulatory rats (P < 0.05) and antagonized its decrease in unloaded ones. Treatment countered loss of soleus mass and myofibre cross-sectional area by approximately 30% (P ≤ 0.02) and maintained a force-frequency relationship closer to ambulatory levels. Indexes of muscle protein and lipid oxidation, such as protein carbonylation, revealed by Oxyblot, and malondialdehyde, measured with HPLC, were significantly blunted in unloaded treated rats compared to untreated ones (P = 0.01). Mechanistic involvement of Grp94 was suggested by the disruption of curcumin-induced attenuation of myofibre atrophy after transfection with antisense grp94 cDNA and by the drug-positive effect on the maintenance of the subsarcolemmal localization of active neuronal nitric oxide synthase molecules, which were displaced to the sarcoplasm by unloading. The absence of additive effects after combined administration of a neuronal nitric oxide synthase inhibitor further supported curcumin interference with this pro-atrophic pathway. In conclusion, curcumin represents an effective and safe tool to upregulate Grp94 muscle levels and to maintain muscle function during unweighting.
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Affiliation(s)
| | - Elena Germinario
- Department of Biomedical Sciences, University of Padova, Padova, Italy Interuniversity Institute of Myology, Italy
| | - Barbara Ravara
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | | | - Daniela Danieli-Betto
- Department of Biomedical Sciences, University of Padova, Padova, Italy Interuniversity Institute of Myology, Italy
| | - Luisa Gorza
- Department of Biomedical Sciences, University of Padova, Padova, Italy
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15
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Renaud G, Llano-Diez M, Ravara B, Gorza L, Feng HZ, Jin JP, Cacciani N, Gustafson AM, Ochala J, Corpeno R, Li M, Hedström Y, Ford GC, Nair KS, Larsson L. Sparing of muscle mass and function by passive loading in an experimental intensive care unit model. J Physiol 2012; 591:1385-402. [PMID: 23266938 DOI: 10.1113/jphysiol.2012.248724] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
The response to mechanical stimuli, i.e., tensegrity, plays an important role in regulating cell physiological and pathophysiological function, and the mechanical silencing observed in intensive care unit (ICU) patients leads to a severe and specific muscle wasting condition. This study aims to unravel the underlying mechanisms and the effects of passive mechanical loading on skeletal muscle mass and function at the gene, protein and cellular levels. A unique experimental rat ICU model has been used allowing long-term (weeks) time-resolved analyses of the effects of standardized unilateral passive mechanical loading on skeletal muscle size and function and underlying mechanisms. Results show that passive mechanical loading alleviated the muscle wasting and the loss of force-generation associated with the ICU intervention, resulting in a doubling of the functional capacity of the loaded versus the unloaded muscles after a 2-week ICU intervention. We demonstrate that the improved maintenance of muscle mass and function is probably a consequence of a reduced oxidative stress revealed by lower levels of carbonylated proteins, and a reduced loss of the molecular motor protein myosin. A complex temporal gene expression pattern, delineated by microarray analysis, was observed with loading-induced changes in transcript levels of sarcomeric proteins, muscle developmental processes, stress response, extracellular matrix/cell adhesion proteins and metabolism. Thus, the results from this study show that passive mechanical loading alleviates the severe negative consequences on muscle size and function associated with the mechanical silencing in ICU patients, strongly supporting early and intense physical therapy in immobilized ICU patients.
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Affiliation(s)
- Guillaume Renaud
- Department of Neuroscience, Clinical Neurophysiology, University Hospital, Entrance 85, 3rd floor, SE-751 85 Uppsala, Sweden
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Misra J, Chanda D, Kim DK, Li T, Koo SH, Back SH, Chiang JYL, Choi HS. Curcumin differentially regulates endoplasmic reticulum stress through transcriptional corepressor SMILE (small heterodimer partner-interacting leucine zipper protein)-mediated inhibition of CREBH (cAMP responsive element-binding protein H). J Biol Chem 2011; 286:41972-41984. [PMID: 21994947 DOI: 10.1074/jbc.m111.274514] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Curcumin (diferuloylmethane), a major active component of turmeric (Curcuma longa), is a natural polyphenolic compound. Herein the effect of curcumin on endoplasmic reticulum (ER) stress responsive gene expression was investigated. We report that curcumin induces transcriptional corepressor small heterodimer partner-interacting leucine zipper protein (SMILE) gene expression through liver kinase B1 (LKB1)/adenosine monophosphate-activated kinase (AMPK) signaling pathway and represses ER stress-responsive gene transcription in an ER-bound transcription factor specific manner. cAMP responsive element-binding protein H (CREBH) and activating transcription factor 6 (ATF6) are both ER-bound bZIP family transcription factors that are activated upon ER stress. Of interest, we observed that both curcumin treatment and SMILE overexpression only represses CREBH-mediated transactivation of the target gene but not ATF6-mediated transactivation. Knockdown of endogenous SMILE significantly releases the inhibitory effect of curcumin on CREBH transactivation. Intrinsic repressive activity of SMILE is observed in the Gal4 fusion system, and the intrinsic repressive domain is mapped to the C terminus of SMILE spanning amino acid residues 203-269, corresponding to the basic region leucine zipper (bZIP) domain. In vivo interaction assay revealed that through its bZIP domain, SMILE interacts with CREBH and inhibits its transcriptional activity. Interestingly, we observed that SMILE does not interact with ATF6. Furthermore, competition between SMILE and the coactivator peroxisome proliferator-activated receptor α (PGC-1α) on CREBH transactivation has been demonstrated in vitro and in vivo. Finally, chromatin immunoprecipitation assays revealed that curcumin decreases the binding of PGC-1α and CREBH on target gene promoter in a SMILE-dependent manner. Overall, for the first time we suggest a novel phenomenon that the curcumin/LKB1/AMPK/SMILE/PGC1α pathway differentially regulates ER stress-mediated gene transcription.
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Affiliation(s)
- Jagannath Misra
- Center for Nuclear Receptor Signals, Hormone Research Center, School of Biological Science and Technology, Chonnam National University, Gwangju 500-757, Republic of Korea
| | - Dipanjan Chanda
- Center for Nuclear Receptor Signals, Hormone Research Center, School of Biological Science and Technology, Chonnam National University, Gwangju 500-757, Republic of Korea
| | - Don-Kyu Kim
- Center for Nuclear Receptor Signals, Hormone Research Center, School of Biological Science and Technology, Chonnam National University, Gwangju 500-757, Republic of Korea
| | - Tiangang Li
- Department of Integrative Medical Sciences, Northeast Ohio Medical University, Rootstown, Ohio 44272
| | - Seung-Hoi Koo
- Department of Molecular Cell Biology and Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, 300 Chunchun-dong, Jangan-gu, Suwon, Gyeonggi-do 440-746, Republic of Korea
| | - Sung-Hoon Back
- School of Biological Sciences, University of Ulsan, Ulsan 680-749, South Korea
| | - John Y L Chiang
- Department of Integrative Medical Sciences, Northeast Ohio Medical University, Rootstown, Ohio 44272
| | - Hueng-Sik Choi
- Center for Nuclear Receptor Signals, Hormone Research Center, School of Biological Science and Technology, Chonnam National University, Gwangju 500-757, Republic of Korea; Research Institute of Medical Sciences, Department of Biomedical Sciences, Chonnam National University Medical School, Gwangju 501-746, Republic of Korea.
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