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Mukherjee A, Sarkar S, Jana S, Swarnakar S, Das N. Neuro-protective role of nanocapsulated curcumin against cerebral ischemia-reperfusion induced oxidative injury. Brain Res 2018; 1704:164-173. [PMID: 30326199 DOI: 10.1016/j.brainres.2018.10.016] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 10/10/2018] [Accepted: 10/13/2018] [Indexed: 12/31/2022]
Abstract
Cerebral ischemia-reperfusion (CIR) accelerates the progression of neurodegeneration by causing mitochondrial dysfunction to overproduce reactive oxygen species (ROS). Curcumin shows protective effects against CIR-induced oxidative damage. Free curcumin (FC) is effective at high doses due to its poor bioavailability. Also the blood-brain barrier (BBB) limits the passage of substances from circulation into the cerebral region. Thus, formulation of curcumin within polyethylene glycol (PEG)-ylated polylactide-co-glycolide (PLGA) nanoparticles (NC) was applied orally to aged rats to explore its role against CIR injury. Mitochondrial damage was evaluated. The levels of pro-inflammatory cytokines and components of apoptotic pathway were studied. Unlike FC, NC pre-treatment exerted better neuro-protection by ameliorating ROS-mediated oxidative damage and prevented CIR-induced neuronal apoptosis. Therefore, curcumin incorporated PEGylated PLGA nanoparticles may be used as a suitable delivery vehicle to the brain as they can increase curcumin bioavalability and the released curcumin may confer protection to the neurons against CIR-induced oxidative damage.
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Affiliation(s)
- Abhishek Mukherjee
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi 110067, India.
| | - Sibani Sarkar
- Division of Cancer Biology and Inflammatory Disorder, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Sayantan Jana
- Department of Physiology, University of Alberta, Edmonton, Canada
| | - Snehasikta Swarnakar
- Division of Cancer Biology and Inflammatory Disorder, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Nirmalendu Das
- Division of Cancer Biology and Inflammatory Disorder, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Jadavpur, Kolkata 700032, India
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Zhou P, Zhang Z, Guo Y, Xiao Z, Zhu P, Mai M, Zheng S. Protective Effect of Antiapoptosis Potency of Prolonged Preservation by Desiccation Using High-Pressure Carbon Monoxide on Isolated Rabbit Hearts. Transplant Proc 2015; 47:2746-51. [DOI: 10.1016/j.transproceed.2015.09.040] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Revised: 09/04/2015] [Accepted: 09/24/2015] [Indexed: 12/22/2022]
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Zhao X, Puszyk WM, Lu Z, Ostrov DA, George TJ, Robertson KD, Liu C. Small molecule inhibitor YM155-mediated activation of death receptor 5 is crucial for chemotherapy-induced apoptosis in pancreatic carcinoma. Mol Cancer Ther 2015; 14:80-9. [PMID: 25344582 PMCID: PMC4387779 DOI: 10.1158/1535-7163.mct-14-0229] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Despite much effort, pancreatic cancer survival rates are still dismally low. Novel therapeutics may hold the key to improving survival. YM155 is a small molecule inhibitor that has shown antitumor activity in a number of cancers by reducing the expression of survivin. The aim of our study is to understand the mechanisms by which YM155 functions in pancreatic cancer cells. We established the antitumor effect of YM155 with in vitro studies in cultured cells, and in vivo studies using a mouse xenograft model. Our data demonstrated that YM155 reduced the expression of survivin; however, downregulation of survivin itself is insufficient to induce apoptosis in pancreatic cancer cells. We showed for the first time that treatment with YM155 increased death receptor 5 (DR5) expression in pancreatic cancer cells. We found that YM155 induced apoptosis by broad-spectrum inhibition of IAP family member proteins (e.g., CIAP1/2 and FLIP) and induced proapoptotic Bak protein upregulation and activation; the antitumor effect of YM155 treatment with either the DR5 agonist lexatumumab or gemcitabine on pancreatic cancer cells was synergistic. Our data also revealed that YM155 inhibits tumor growth in vivo, without apparent toxicity to the noncancerous human pancreatic ductal epithelial cell line. Together, these findings suggest that YM155 could be a novel therapeutic agent for pancreatic cancer.
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Affiliation(s)
- Xiangxuan Zhao
- Department of Radiology, Shengjing Hospital of China Medical University, Shenyang, China. Department of Pathology, Immunology, and Laboratory Medicine, University of Florida College of Medicine, Gainesville, Florida. Institute of Cancer Stem Cell, Dalian Medical University Cancer Center, Dalian, China.
| | - William M Puszyk
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida College of Medicine, Gainesville, Florida
| | - Zaiming Lu
- Department of Radiology, Shengjing Hospital of China Medical University, Shenyang, China
| | - David A Ostrov
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida College of Medicine, Gainesville, Florida
| | - Thomas J George
- Department of Medicine, University of Florida College of Medicine, Gainesville, Florida
| | - Keith D Robertson
- Department of Molecular Pharmacology, Mayo Clinic, Rochester, Minnesota. Department of Experimental Therapeutics, Mayo Clinic, Rochester, Minnesota
| | - Chen Liu
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida College of Medicine, Gainesville, Florida.
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Zhao X, Puszyk WM, Lu Z, Ostrov DA, George TJ, Robertson KD, Liu C. Small Molecule Inhibitor YM155-Mediated Activation of Death Receptor 5 Is Crucial for Chemotherapy-Induced Apoptosis in Pancreatic Carcinoma. Mol Cancer Ther 2015; 14:80-89. [DOI: doi10.1158/1535-7163.mct-14-0229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Abstract
Despite much effort, pancreatic cancer survival rates are still dismally low. Novel therapeutics may hold the key to improving survival. YM155 is a small molecule inhibitor that has shown antitumor activity in a number of cancers by reducing the expression of survivin. The aim of our study is to understand the mechanisms by which YM155 functions in pancreatic cancer cells. We established the antitumor effect of YM155 with in vitro studies in cultured cells, and in vivo studies using a mouse xenograft model. Our data demonstrated that YM155 reduced the expression of survivin; however, downregulation of survivin itself is insufficient to induce apoptosis in pancreatic cancer cells. We showed for the first time that treatment with YM155 increased death receptor 5 (DR5) expression in pancreatic cancer cells. We found that YM155 induced apoptosis by broad-spectrum inhibition of IAP family member proteins (e.g., CIAP1/2 and FLIP) and induced proapoptotic Bak protein upregulation and activation; the antitumor effect of YM155 treatment with either the DR5 agonist lexatumumab or gemcitabine on pancreatic cancer cells was synergistic. Our data also revealed that YM155 inhibits tumor growth in vivo, without apparent toxicity to the noncancerous human pancreatic ductal epithelial cell line. Together, these findings suggest that YM155 could be a novel therapeutic agent for pancreatic cancer. Mol Cancer Ther; 14(1); 80–89. ©2014 AACR.
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Affiliation(s)
- Xiangxuan Zhao
- 1Department of Radiology, Shengjing Hospital of China Medical University, Shenyang, China
- 2Department of Pathology, Immunology, and Laboratory Medicine, University of Florida College of Medicine, Gainesville, Florida
- 3Institute of Cancer Stem Cell, Dalian Medical University Cancer Center, Dalian, China
| | - William M. Puszyk
- 2Department of Pathology, Immunology, and Laboratory Medicine, University of Florida College of Medicine, Gainesville, Florida
| | - Zaiming Lu
- 1Department of Radiology, Shengjing Hospital of China Medical University, Shenyang, China
| | - David A. Ostrov
- 2Department of Pathology, Immunology, and Laboratory Medicine, University of Florida College of Medicine, Gainesville, Florida
| | - Thomas J. George
- 4Department of Medicine, University of Florida College of Medicine, Gainesville, Florida
| | - Keith D. Robertson
- 5Department of Molecular Pharmacology, Mayo Clinic, Rochester, Minnesota
- 6Department of Experimental Therapeutics, Mayo Clinic, Rochester, Minnesota
| | - Chen Liu
- 2Department of Pathology, Immunology, and Laboratory Medicine, University of Florida College of Medicine, Gainesville, Florida
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Zhang H, Song LC, Jia CH, Lu YL. Effects of ATP sensitive potassium channel opener on the mRNA and protein expressions of caspase-12 after cerebral ischemia-reperfusion in rats. Neurosci Bull 2014; 24:7-12. [PMID: 18273070 DOI: 10.1007/s12264-008-1227-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
OBJECTIVE To investigate effects of K(ATP) opener on the expressions of caspase-12 mRNA and protein, and to explore the role of endoplasmic reticulum (ER) stress pathway in the mechanism of K(ATP) opener protecting against neuronal apoptosis after cerebral ischemia-reperfusion. METHODS Two hundred rats were randomly divided into four groups: sham operation group, ischemia-reperfusion group, K(ATP) opener group, and K(ATP) blocker group. The middle cerebral artery occlusion (MCAO) model was established by intraluminal suture occlusion method; neuronal apoptosis was detected by TUNEL staining. The mRNA and protein expressions of caspase-12 were detected by semi-quantitative RT-PCR and immunohistochemical staining, respectively. RESULTS In ischemia-reperfusion group, K(ATP) opener group and K(ATP) blocker group, the number of apoptotic cells and the mRNA and protein expressions of caspase-12 gradually increased following cerebral reperfusion, and reached the peak at 24 h. In K(ATP) opener group, the number of apoptotic cells was significantly less than that in ischemia-reperfusion group and K(ATP) blocker group at 12 h, 24 h, 48 h and 72 h (P< 0.05 or P< 0.01); while the mRNA and protein levels of caspase-12 were significantly less than those in ischemia-reperfusion group and K(ATP) blocker group at all times (P< 0.05 or P< 0.01). There were no differences between the ischemia-reperfusion group and K(ATP) blocker group at each time (P> 0.05). CONCLUSION K(ATP) opener may protect neurons from apoptosis following the cerebral ischemia-reperfusion by inhibiting ER stress pathway.
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Affiliation(s)
- Hong Zhang
- Department of Neurology, the Affiliated Shengjing Hospital of China Medical University, Shenyang 110004, China.
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Activation and crosstalk between the endoplasmic reticulum road and JNK pathway in ischemia-reperfusion brain injury. Acta Neurochir (Wien) 2012; 154:1197-203. [PMID: 22638597 DOI: 10.1007/s00701-012-1396-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Accepted: 05/14/2012] [Indexed: 12/31/2022]
Abstract
BACKGROUND Recent studies suggest that endoplasmic reticulum stress (ERS) is the key process in ischemic brain injury. The JNK pathway is also involved in the process of ischemic brain injury. METHOD We established a middle cerebral artery occlusion/reperfusion (MCAO/R) model in rats; detected the changes in c-Jun N-terminal kinase (JNK), GADD153 and caspase-12 at different reperfusion time points by immunohistochemistry, Western blot and double-label immunofluorescence; and observed the effect of JNK inhibitor SP600125 on the expression of JNK, GADD153 and caspase-12 to explore the relationship between the endoplasmic reticulum road and JNK pathway. RESULTS The expression of the two hallmarks of ERS-GADD153 and caspase-12-significantly increased, and the activation of JNK also obviously increased. After interference by SP600125, the expression of p-JNk and caspase-12 obviously decreased, whereas the decrease of GADD153 occurred only after 24 h reperfusion. CONCLUSIONS Both ERS and JNK pathways are involved in the pathological process of ischemic brain injury. The JNK pathway may be involved in the process of ERS, but perhaps has more effect on the caspase-12 pathway.
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Wang L, Zhu QL, Wang GZ, Deng TZ, Chen R, Liu MH, Wang SW. The protective roles of mitochondrial ATP-sensitive potassium channels during hypoxia-ischemia-reperfusion in brain. Neurosci Lett 2011; 491:63-7. [PMID: 21215294 DOI: 10.1016/j.neulet.2010.12.065] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2010] [Revised: 12/14/2010] [Accepted: 12/31/2010] [Indexed: 11/27/2022]
Abstract
The role of ATP-sensitive potassium (K(ATP)) channels in cerebral ischemia-reperfusion has been well documented. K(ATP) channel openers protect neuron by mimicking ischemic preconditioning. However, the different protection between the mitochondrial and sarcolemma K(ATP) openers has been seldom studied. In the experiment, we investigated the effects of K(ATP) channel openers diazoxide and pinacidil on the hypoxia-ischemia-reperfusion in cultured hippocampal neurons and gerbil brain. The cultured hippocampal neurons and gerbil brain were pretreated with diazoxide or pinacidil before oxygen-glucose deprivation (OGD) and cerebral ischemia-reperfusion, respectively. Survival rate, apoptosis rate and lactate dehydrogenase (LDH) releasing after the reperfusion were subsequently detected. Then the subunits mRNA was detected by RT-PCR. The survival rate and LDH content in diazoxide group increased more than that in pinacidil group (86.21±2.73% vs. 78.59±1.94%, P<0.05; 133.29±15.00 U/L vs. 193.47±3.39 U/L, P<0.01). The apoptosis rate in diazoxide group decreased significantly more than that in pinacidil group (23.82±0.14% vs. 37.05±0.67%, P<0.01). Diazoxide pretreatment increased the expression of Kir6.1 mRNA obviously. The results suggested that mitoK(ATP) channels opener diazoxide played a major protective role on cerebral ischemia-reperfusion. Furthermore, diazoxide might become a new treatment for cerebral ischemia diseases through increasing the expression of Kir6.1 mRNA.
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Affiliation(s)
- Lin Wang
- Institute of Geriatric Cardiology, Chinese PLA General Hospital, Fuxing Road 28, Beijing 100853, China
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Zhang H, Wang ZQ, Zhao DY, Zheng DM, Feng J, Song LC, Luo Y. AIF-mediated mitochondrial pathway is critical for the protective effect of diazoxide against SH-SY5Y cell apoptosis. Brain Res 2011; 1370:89-98. [DOI: 10.1016/j.brainres.2010.11.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2010] [Revised: 11/02/2010] [Accepted: 11/05/2010] [Indexed: 02/01/2023]
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Abstract
The mechanisms of brain ischemic insult include glutamate excitoxicity, calcium toxicity, free radicals, nitric oxide, inflammatory reactions, as well as dysfunctions of endoplasmic reticulum and mitochondrion. These injury cascades are interconnected in complex ways, thus it is hard to compare their pathogenic importances in ischemia models. And the research in cellular and molecular pathways has spurred the studies in potential neuroprotections mainly in pharmacological fields, such as anti-excitotoxic treatment, calcium-channel antagonism, approaches for inhibition of oxidation, inflammation and apoptosis, etc. Besides, other protective interventions including thrombolysis, arteriogenesis, regeneration therapy, and ischemia preconditioning or postconditioning, are also under investigations. Despite the present difficulties, we are quite optimistic towards future clinical applications of neuroprotective agents, by optimizing experimental approaches and clinical trials.
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Xue RL, He JX, Wang N, Yao FZ, Lv JR, Wu G. Relationship between transmembrane signal transduction pathway and DNA repair and the mechanism after global cerebral ischemia-reperfusion in rats. Neurosci Bull 2009; 25:115-21. [PMID: 19448685 DOI: 10.1007/s12264-009-8818-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Abstract
OBJECTIVE To investigate the protein levels of phospho-ERK and phospho-APE/Ref-1 in hippocampal neurons after global cerebral ischemia reperfusion in rats, and observe the relationship between transmembrane signal transduction and repair of DNA damage. The role of ERK signal transduction pathway following global cerebral ischemia reperfusion in rats is further discussed. METHODS Ninety healthy male SD rats were divided into 3 groups randomly: Sham group (S group), Ischemia reperfusion group (IR group) and Pd98059 pretreatment/ischemia reperfusion group (PD group). Global cerebral ischemia reperfusion model was established by four-vessel occlusion (4-VO) method, and reperfusion was performed 5 minutes following ischemia. Protein levels of phospho-ERK and phospho-APE/Ref-1 were detected using immunohistochemical method at 2 h, 6 h, 12 h, 24 h, 48 h and 72 h after reperfusion, and neuron apoptosis was observed by HE and TUNEL staining. RESULTS In CA1 region of IR group, TUNEL positive cells began to appear at 6 h after IR, and reached the apex during 24 h to 48 h. However, TUNEL positive was most strongly exhibited in PD group. In IR group, phospho-ERK was obviously detected in CA3 region at 2 h after IR, and its level was gradually decreased from 6 h until totally absent at 48 h. Besides, phospho-ERK expression in PD group was weaker than that in IR group. For phospho-APE/Ref-1, its expression began to appear in CA1 region in IR group at 2 h after IR, with no obvious changes during 2 h to 12 h. Phospho-APE/Ref-1 expression began to decrease at 24 h and this decrease continued thereafter. Expression level of phospho-APE/Ref-1 in PD group was lower than that in IR group. Results showed the concurrence of decreased phospho-ERK expression level and increased neuron apoptosis after cerebral ischemia reperfusion, the former of which was consistent with the decrease of phospho-APE/Ref-1 expression. Also, the greater the inhibition of ERK phosphorylation was, the greater decrease of APE/Ref-1 expression occurred. CONCLUSION Activation of ERK signal transduction pathway increased the expression of phospho-APE/Ref-1, and thus faciliated the repair of DNA damage. So, activation of ERK signal transduction pathway may protect neurons from apoptosis after cerebral ischemia reperfusion.
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Affiliation(s)
- Rong-Liang Xue
- Department of Anesthesiology, Second Affiliated Hospital, Xioan Jiaotong University, Xioan 710004, China.
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