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Glucose related protein 78 kDa

Guo-Zhu Sun, Fen-Fei Gao, Zong-Mao Zhao, Hai Sun, Wei Xu, Li-Wei Wu, Yong-Chang He
Neuronal apoptosis is mediated by intrinsic and extrinsic signaling pathways such as the membrane-mediated, mitochondrial, and endoplasmic reticulum stress pathways. Few studies have examined the endoplasmic reticulum-mediated apoptosis pathway in the penumbra after traumatic brain injury, and it remains unclear whether endoplasmic reticulum stress can activate the caspase-12-dependent apoptotic pathway in the traumatic penumbra. Here, we established rat models of fluid percussion-induced traumatic brain injury and found that protein expression of caspase-12, caspase-3 and the endoplasmic reticulum stress marker 78 kDa glucose-regulated protein increased in the traumatic penumbra 6 hours after injury and peaked at 24 hours...
August 2016: Neural Regeneration Research
Cristina Contreras, Ismael González-García, Patricia Seoane-Collazo, Noelia Martínez-Sánchez, Laura Liñares-Pose, Eva Rial-Pensado, Johan Fernø, Manuel Tena-Sempere, Núria Casals, Carlos Diéguez, Rubén Nogueiras, Miguel López
The chaperone GRP78/BiP (glucose regulated protein 78 kDa/binding immunoglobulin protein) modulates protein folding in reply to cellular insults that lead to ER stress. The aim of this study was to investigate the role of hypothalamic GRP78 on energy balance, with particular interest on thermogenesis and browning of white adipose tissue (WAT). For this purpose, we used diet-induced obese rats and thapsigargin-treated rats and by combining metabolic, histologic, physiologic, pharmacologic, thermographic and molecular techniques, we studied the effect of genetic manipulation of hypothalamic GRP78...
September 15, 2016: Diabetes
Rui-Pei Chen, Zhen-Lun Huang, Li-Xuan Liu, Meng-Qi Xiang, Guo-Ping Li, Jia-Lin Feng, Bin Liu, Ling-Fei Wu
Long non-coding RNAs (lncRNAs) play important roles in diverse biological processes. Although downregulation of lncRNA maternally expressed gene 3 (MEG3) has been identified in several types of cancers, little is known concerning its biological role and regulatory mechanism in hepatoma. Our previous studies demonstrated that MEG3 induces apoptosis in a p53-dependent manner. The aim of the present study was to determine whether endoplasmic reticulum (ER) stress is involved in MEG3‑induced apoptosis. Recombinant lentiviral vectors containing MEG3 (Lv‑MEG3) were constructed and transfected into HepG2 cells...
September 2016: Oncology Reports
Jeong Yong Moon, Somi Kim Cho
Nobiletin, a major component of citrus fruits, is a polymethoxyflavone derivative that exhibits anticancer activity against several forms of cancer, including SNU-16 human gastric cancer cells. To explore the nobiletin-induced cell death mechanism, we examined the changes in protein expression caused by nobiletin in human gastric cancer SNU-16 cells by means of two-dimensional gel electrophoresis (2-DGE), followed by peptide mass fingerprinting (PMF) analysis. Seventeen of 20 selected protein spots were successfully identified, including nine upregulated and eight downregulated proteins...
2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Lili Wen, Fang Han, Yuxiu Shi, Xiaoyan Li
Previous studies revealed that patients with post-traumatic stress disorder (PTSD) have a smaller than normal medial prefrontal cortex (mPFC), and PTSD rats [single prolonged stress, (SPS)] have an increased mPFC neuron apoptosis, which are related to the severity of PTSD symptoms. Three signalling pathways [protein kinase RNA-like endoplasmic reticulum kinase (PERK), activating transcription factor 6 (ATF6), and inositol-requiring enzyme 1 (IRE1)] in the endoplasmic reticulum (ER) play a critical role in resisting apoptosis...
August 2016: Journal of Molecular Neuroscience: MN
Y Zeng, H Sun, Y Li, M Shao, P Han, X Yu, L He, Y Xu, S Li
Triptolide (TPL) is a main active compound isolated fromTripterygium wilfordiiHook f. Despite its positive therapeutic effect, the female reproductive toxicity of TPL is still the bottleneck of clinical application. The study was designed to investigate the adverse effects on mice ovary and underlying mechanism of TPL. Adult female NIH mice were treated with two therapeutic doses of TPL (25 and 50 μg/kg/d) for 50 days, respectively. Mice estrous cycle was detected by vaginal cytology method. Half mice from each group were selected randomly to perform superovulation...
March 27, 2016: Human & Experimental Toxicology
Fangfang Liu, Wen Cheng, Xiaolei Bi, Yun Zhang, Yuxia Zhao, Fan Jiang
Deletion of the gene of tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) in apolipoprotein E-deficient (ApoE-/-) mice increased atherosclerosis. However, the effect of TRAIL at a supra-physiological level on early atherogenesis is unknown. ApoE-/- mice were divided into Early (high-fat diet with concomitant TRAIL treatment for 4 weeks) and Late (high-fat diet for 16 weeks with TRAIL being given during the last 4 weeks) groups. It was found that TRAIL stimulated atherogenesis in the Early group but not in the Late group...
May 2016: Clinical and Experimental Pharmacology & Physiology
Shiyan Gu, Chengzhi Chen, Xuejun Jiang, Zunzhen Zhang
Although it is well documented that endoplasmic reticulum (ER) stress and mitochondrial dysfunction are associated with apoptosis, little is known about whether they are involved in the apoptotic cell death induced by resveratrol and arsenic trioxide (ATO) combination. In this study, we identified a series of sensitization effects of resveratrol on human lung adenocarcinoma A549 cells to ATO treatment, with the combination index (CI) of resveratrol and ATO less than 1. Then, we demonstrated that ER stress was contributed to this synergistic effect, which was manifested by increased the expression levels of ER stress hallmarks, including 78-kDa glucose-regulated protein (GRP 78), caspase 12 and C/EBP-homologous protein (CHOP), In addition, mitochondrial dysfunction was observed after exposure of A549 cells to resveratrol or/and ATO, which was displayed by some alterations of mitochondria-related events, such as loss of mitochondrial membrane potential, cytochrome c release and changes of Bax and Bcl-2 expressions...
February 5, 2016: Chemico-biological Interactions
Ashok Jangra, Shubham Dwivedi, Chandra Shaker Sriram, Satendra Singh Gurjar, Mohit Kwatra, Kunjbihari Sulakhiya, Chandana C Baruah, Mangala Lahkar
The primary objective of our study is to investigate the neuroprotective efficacy of honokiol and imipramine against restraint stress (RS)-induced cognitive impairment and depressive-like behaviour in mice. We examined whether the neuroprotective activity of honokiol and imipramine mediates through the inhibition of endoplasmic reticulum stress. Adult Swiss albino mice were restrained for 6h/day for 28 days. Honokiol (3 and 10mg/kg) and Imipramine (10 and 30mg/kg) were administered for last 7 days to the different groups...
January 5, 2016: European Journal of Pharmacology
Kazuki Ojino, Masamitsu Shimazawa, Hiroshi Izawa, Yukimichi Nakano, Kazuhiro Tsuruma, Hideaki Hara
DBA/2J mice are one of several animal strains used for experimental models of both intraocular hypertension and glaucoma. This study investigates the relationship between endoplasmic reticulum (ER) stress and optic nerve degeneration in DBA/2J mice. Intraocular pressure (IOP) was measured in DBA/2J mice between the ages of 6 and 15 months. Optic nerve damage was assessed at 15 months of age. The nerve was immunostained with antibodies to either neurofilament heavy chain (NFH) or phosphorylated NFH (pNFH), and optic nerve damage was assessed by performing NFH- and pNFH-positive axon counts...
November 2015: Journal of Neuroscience Research
Yair Y Kohn, Jane E Symonds, Torsten Kleffmann, Shinichi Nakagawa, Malgorzata Lagisz, P Mark Lokman
In order to develop biomarkers that may help predict the egg quality of captive hapuku (Polyprion oxygeneios) and provide potential avenues for its manipulation, the present study (1) sequenced the proteome of early-stage embryos using isobaric tag for relative and absolute quantification analysis, and (2) aimed to establish the predictive value of the abundance of identified proteins with regard to egg quality through regression analysis. Egg quality was determined for eight different egg batches by blastomere symmetry scores...
December 2015: Fish Physiology and Biochemistry
Marcela Gimenez, Suely Kazue Nagahashi Marie, Sueli Oba-Shinjo, Miyuki Uno, Clarice Izumi, João Bosco Oliveira, Jose Cesar Rosa
BACKGROUND: Gliomas account for more than 60 % of all primary central nervous system neoplasms. Low-grade gliomas display a tendency to progress to more malignant phenotypes and the most frequent and malignant gliomas are glioblastomas (GBM). Another type of glioma, oligodendroglioma originates from oligodendrocytes and glial precursor cells and represents 2-5 % of gliomas. The discrimination between these two types of glioma is actually controversial, thus, a molecular distinction is necessary for better diagnosis...
2015: BMC Cancer
Yali Ye, Fen Fu, Xiaoming Li, Jie Yang, Hongmei Liu
Atherosclerosis and related cardiovascular diseases (CVD) represent one of the greatest threats to human health worldwide. The protection of vascular smooth muscle cells (VSMCs) from apoptosis in the plaque has become an important therapeutic target for atherosclerotic plaque stabilization. A significant association of selenoprotein S (SelS) gene polymorphism with atherosclerotic CVD has been reported in epidemiologic studies, but the underlying mechanism remains unknown. In this paper, SelS expression in the thoracic aorta and its role in the protection of VSMCs from apoptosis have been studied...
January 2016: Journal of Cellular Biochemistry
Jin Muk Kang, Sujin Park, Staci Jakyong Kim, Hyojung Kim, Bona Lee, Junil Kim, Jinah Park, Shin Tae Kim, Han-Kwang Yang, Woo Ho Kim, Seong-Jin Kim
Recent advances in genome and transcriptome analysis have contributed to the identification of many potential cancer-related genes. Furthermore, biological and clinical investigations of the candidate genes provide us with a better understanding of carcinogenesis and development of cancer treatment. Here, we report a novel role of KIAA1324 as a tumor suppressor in gastric cancer. We observed that KIAA1324 was downregulated in most gastric cancers from transcriptome sequencing data and found that histone deacetylase was involved in the suppression of KIAA1324...
August 1, 2015: Cancer Research
Akio Kimura, Nobuaki Yoshikura, Akihiro Koumura, Yuichi Hayashi, Yuko Kobayashi, Issei Kobayashi, Takeo Yano, Takashi Inuzuka
UNLABELLED: Naturally occurring autoantibodies have natural physiologic functions related to normal cell processes. However, the repertoire of naturally occurring autoantibodies against neuronal antigens in CSF is unclear. The purpose of this study was to identify naturally occurring autoantibodies against neuronal antigens in CSF from patients with various neurologic diseases by proteomics-based analysis. The CSF samples were collected from 77 patients with various neurologic disorders...
October 14, 2015: Journal of Proteomics
Yang Yang, Xinwei Lin, Hui Huang, Demin Feng, Yue Ba, Xuemin Cheng, Liuxin Cui
Excessive fluoride exposure is known to contribute to reproductive system dysfunction, ultimately leading to pathological damage and apoptosis in cells. Although both oxidative and endoplasmic reticulum (ER) stresses have been implicated in fluorosis, the signaling pathways and their roles in sodium fluoride (NaF)-induced apoptosis of Sertoli cells have been sparsely described. In this study, oxidative damage, ER stress, and apoptosis were analyzed after Sertoli cells were treated with varying doses of NaF for 24hr...
April 1, 2015: Journal of Environmental Sciences (China)
S Katsiougiannis, R Tenta, F N Skopouli
The aim of this study was to examine the levels of endoplasmic reticulum (ER) stress in minor salivary glands, to investigate the interplay between ER stress-induced autophagy and apoptosis in human salivary gland (HSG) cells and to test the effect of ER stress-induced apoptosis on the cellular redistribution of the two major Sjögren's syndrome (SS) autoantigens Ro/Sjögren's syndrome-related antigen A (SSA) and La/Sjögren's syndrome-related antigen B (SSB). Minor salivary gland biopsies from SS patients and sicca controls were examined by immunohistochemistry for the expression of 78 kDa glucose-regulated protein/binding immunoglobulin protein (GRP78/BiP) as an indicator of unfolded protein response (UPR)...
August 2015: Clinical and Experimental Immunology
Liang Zhao, Hongdan Li, Yijie Shi, Guan Wang, Liwei Liu, Chang Su, Rongjian Su
Nanoparticles (NPs) which target specific agents could effectively recognize the target cells and increase the stability of chemical agents by encapsulation. As such, NPs have been widely used in cancer treatment research. Recently, over 90% of treatment failure cases in patients with metastatic cancer were attributed to resistance to chemotherapy. Surface-exposed glucose-regulated protein of 78 kDa (GRP78) is expressed highly on many tumor cell surfaces in many human cancers and is related to the regulation of invasion and metastasis...
2015: International Journal of Nanomedicine
Akio Kimura, Takeo Sakurai, Nobuaki Yoshikura, Akihiro Koumura, Yuichi Hayashi, Hirofumi Ohtaki, Mitsuhiro Chousa, Mitsuru Seishima, Takashi Inuzuka
Antiendothelial cell antibodies (AECAs) have been detected in patients who have autoimmune and inflammatory diseases. Previous studies showed that AECAs against human umbilical vein endothelial cells were detected in healthy subjects. In the present study, we evaluated AECAs against human brain microvascular endothelial cells (HBMEC) in serum. We detected 250 antigen spots that reacted with AECAs in serum samples from 30 healthy subjects by 2-dimensional immunoblot using primary cultured HBMEC as the antigen source...
2015: Current Neurovascular Research
C Mozzini, U Garbin, C Stranieri, A Pasini, E Solani, I A Tinelli, L Cominacini, A M Fratta Pasini
Endoplasmic reticulum (ER) stress plays a role in the pathogenesis of type 2 diabetes mellitus (T2DM), with activation of the unfolded protein response (UPR) and ER apoptosis in β-cells. The aim of the study is investigating the role of the prolonged glycemic, inflammatory, and oxidative impairment as possible UPR and ER apoptosis inductors in triggering the ER stress response and the protective nuclear erythroid-related factor 2 (Nrf2)/antioxidant-related element (ARE) activation in peripheral blood mononuclear cells (PBMC) of T2DM patients without glycemic target...
March 2015: Free Radical Research
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