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Kanwal Maheshwari, Renato M Silva, Leticia Guajardo-Morales, Gustavo P Garlet, Alexandre R Vieira, Ariadne Letra
INTRODUCTION: Heat shock proteins (HSPs) protect cells under adverse conditions such as infection, inflammation, and disease. The differential expression of HSPs in human periapical granulomas suggests a potential role for these proteins in periapical lesion development, which may contribute to different clinical outcomes. Therefore, we hypothesized that polymorphisms in HSP genes leading to perturbed gene expression and protein function may contribute to an individual's susceptibility to periapical lesion development...
October 2016: Journal of Endodontics
Amanda K Lindholm-Perry, Rebecca J Kern, Brittney N Keel, Warren M Snelling, Larry A Kuehn, Harvey C Freetly
We have previously identified components of the immune system contributing to feed intake and gain in both the rumen and small intestine of beef steers. In this study, we examined the spleen, a major lymphatic organ near the digestive tract, to determine whether it was also influencing individual feed efficiency status through immune responses. Animals (n = 16) that were divergent for gain and intake were selected for tissue sampling. The spleen transcriptomes were evaluated by microarray. A total of 1216 genes were identified as differentially expressed...
2016: Frontiers in Genetics
Srividya Vasu, Neville H McClenaghan, Peter R Flatt
OBJECTIVES: Mechanisms of toxicity and cell damage were investigated in novel clonal human pancreatic beta cell line, 1.1B4, after exposure to streptozotocin, alloxan, ninhydrin, and hydrogen peroxide. METHODS: Viability, DNA damage, insulin secretion/content, [Ca]i, and glucokinase/hexokinase, mRNA expression were measured by MTT assay, comet assay, radioimmunoassay, fluorometric imaging plate reader, enzyme-coupled photometry, and real-time polymerase chain reaction, respectively...
October 2016: Pancreas
Yun Sol Jo, Mi Ryoung Choi, Sang Yong Song, Min Sung Kim, Nam Jin Yoo, Sug Hyung Lee
Frameshift mutation of genes containing mononucleotide repeats is a feature of gastric (GC) and colorectal cancers (CRC) with microsatellite instability (MSI). In the public genome database, we found that human HSPA4 gene encoding a heats hock protein 70 protein (HSP70-4) and MED13 gene had mononucleotide repeats in the coding sequences that could be targets for frameshift mutation in cancers with MSI. HSP70-4 is a member of HSP70 that is known to play a role in cell survival. MED13 is a member of MED genome-wide transcription regulators that function as a regulator for diverse biological processes...
October 2016: Pathology Oncology Research: POR
Tatyana Appelbaum, Doreen Becker, Evelyn Santana, Gustavo D Aguirre
PURPOSE: Canine X-linked progressive retinal atrophy 1 (XLPRA1) caused by a mutation in retinitis pigmentosa (RP) GTPase regulator (RPGR) exon ORF15 showed significant variability in disease onset in a colony of dogs that all inherited the same mutant X chromosome. Defective protein trafficking has been detected in XLPRA1 before any discernible degeneration of the photoreceptors. We hypothesized that the severity of the photoreceptor degeneration in affected dogs may be associated with defects in genes involved in ciliary trafficking...
2016: Molecular Vision
Mohammad Reza Mirzaei, Mohammad Kazemi Arababadi, Malek Hossein Asadi, Seyed Javad Mowla
OBJECTIVE: OCT4B1, a novel variant of OCT4, is expressed in cancer cell lines and tis- sues. Based on our previous reports, OCT4B1 appears to have a crucial role in regulating apoptosis as well as stress response [heat shock proteins (HSPs)] pathways. The aim of the present study was to determine the effects of OCT4B1 silencing on the expression of high molecular weight HSPs in three different human tumor cell lines. MATERIALS AND METHODS: In this experimental study, OCT4B1 expression was suppressed in AGS (gastric adenocarcinoma), 5637 (bladder tumor) and U-87MG (brain tumor) cell lines using RNAi strategy...
2016: Cell Journal
Ram Bhupal Reddy, Anupama Rajan Bhat, Bonney Lee James, Sindhu Valiyaveedan Govindan, Rohit Mathew, D R Ravindra, Naveen Hedne, Jeyaram Illiayaraja, Vikram Kekatpure, Samanta S Khora, Wesley Hicks, Pramila Tata, Moni A Kuriakose, Amritha Suresh
The head and neck squamous cell carcinoma (HNSCC) transcriptome has been profiled extensively, nevertheless, identifying biomarkers that are clinically relevant and thereby with translational benefit, has been a major challenge. The objective of this study was to use a meta-analysis based approach to catalog candidate biomarkers with high potential for clinical application in HNSCC. Data from publically available microarray series (N = 20) profiled using Agilent (4X44K G4112F) and Affymetrix (HGU133A, U133A_2, U133Plus 2) platforms was downloaded and analyzed in a platform/chip-specific manner (GeneSpring software v12...
2016: PloS One
Sheng-Wei Luo, Wei-Na Wang, Luo Cai, Zeng-Hua Qi, Cong Wang, Yuan Liu, Chang-Lian Peng, Liang-Biao Chen
The effects of Dissostichus mawsoni-Calmodulin (Dm-CaM) on growth performance, enzyme activities, respiratory burst, MDA level and immune-related gene expressions of the orange-spotted grouper (Epinephelus coioides) exposed to the acute low temperature stress were evaluated. The commercial diet supplemented with Dm-CaM protein was fed to the groupers for 6 weeks. No significant difference was observed in the specific growth rates, weight gains and survivals. After the feeding trial, the groupers were exposed to acute low temperature challenge...
October 2015: Fish Physiology and Biochemistry
Teng Ma, Lu Xu, Hongzhi Wang, Jing Chen, Lu Liu, Guobin Chang, Guohong Chen
IMP (inosine 5'-monophosphate) is a compound that enhances the flavor of poultry meat. IMP has become a new breeding trait to improve poultry meat quality. We tried to identify several potential regulatory genes, and construct their predicted regulatory relationships. Time series gene expression profiles of thigh muscle tissues of Rugao chicken, a famous indigenous breed in China, were performed for analysis of genes that are co-expressed or correlated with the concentration of IMP. We found 15 crucial co-expression genes, which are Hspa2, Pten, Gabpa, Bpi, Mkl1, Srf, Cd34, Hspa4, Etv6, Bmpr2, Gde1, Igfbp5, Cd28, Pecam1 and Gja1, that may directly or indirectly regulate IMP metabolism...
2015: Journal of Animal Science and Biotechnology
Sourabh Dwivedi, Quaiser Saquib, Abdulaziz A Al-Khedhairy, Javed Ahmad, Maqsood A Siddiqui, Javed Musarrat
Rhamnolipids extracted from Pseudomonas aeruginosa strain JS-11 were utilized for synthesis of stable silver nanoparticles (Rh-AgNPs). The Rh-AgNPs (23 nm) were characterized by Fourier transform infra-red (FTIR) spectroscopy, atomic force microscopy (AFM) and transmission electron microscopy (TEM). The cytotoxicity assays suggested significant decrease in viability of Rh-AgNPs treated human breast adenocarcinoma (MCF-7) cells, compared with normal human peripheral blood mononuclear (PBMN) cells. Flow cytometry data revealed 1...
August 1, 2015: Colloids and Surfaces. B, Biointerfaces
Srividya Vasu, R Charlotte Moffett, Neville H McClenaghan, Peter R Flatt
Knowledge of the effects of glucotoxic and lipotoxic environments on proglucagon producing intestinal L cells and pancreatic alpha cells is limited compared with pancreatic beta cells. This study compares the in vitro responses of these cell types to hyperglycaemia and hyperlipidaemia. Glucose (30 mM) and palmitate (0.5mM) reduced GLUTag and MIN6 cell viability while alpha TC1 cells were sensitive only to lipotoxicity. Consistent with this, Cat mRNA expression was substantially higher in GLUTag and alpha TC1 cells compared to MIN6 cells...
August 1, 2015: Experimental Cell Research
Andrey S Glotov, Evgeny S Tiys, Elena S Vashukova, Vladimir S Pakin, Pavel S Demenkov, Olga V Saik, Timofey V Ivanisenko, Olga N Arzhanova, Elena V Mozgovaya, Marina S Zainulina, Nikolay A Kolchanov, Vladislav S Baranov, Vladimir A Ivanisenko
BACKGROUND: Pre-eclampsia is the most common complication occurring during pregnancy. In the majority of cases, it is concurrent with other pathologies in a comorbid manner (frequent co-occurrences in patients), such as diabetes mellitus, gestational diabetes and obesity. Providing bronchial asthma, pulmonary tuberculosis, certain neurodegenerative diseases and cancers as examples, we have shown previously that pairs of inversely comorbid pathologies (rare co-occurrences in patients) are more closely related to each other at the molecular genetic level compared with randomly generated pairs of diseases...
2015: BMC Systems Biology
Zongguo Yang, Liping Zhuang, Peter Szatmary, Li Wen, Hua Sun, Yunfei Lu, Qingnian Xu, Xiaorong Chen
BACKGROUND: Heat shock proteins (HSPs) are overexpressed in human hepatocellular carcinoma (HCC) tissue and correlate with aggressiveness and prognosis of HCC. METHODS: Using the GSE14520 microarray expression profile from Gene Expression Omnibus, we compared HSP gene expression between tumour and non-tumour tissues and correlated this with outcomes in HCC patients. RESULTS: We analysed 220 hepatitis B virus (HBV)-related HCC patients and 25 HSPs in this study...
2015: International Journal of Medical Sciences
Celia van der Merwe, Zahra Jalali Sefid Dashti, Alan Christoffels, Ben Loos, Soraya Bardien
Parkinson's disease (PD) is characterised by the loss of dopaminergic neurons in the midbrain. Autosomal recessive, early-onset cases of PD are predominantly caused by mutations in the parkin, PINK1 and DJ-1 genes. Animal and cellular models have verified a direct link between parkin and PINK1, whereby PINK1 phosphorylates and activates parkin at the outer mitochondrial membrane, resulting in removal of dysfunctional mitochondria via mitophagy. Despite the overwhelming evidence for this interaction, few studies have been able to identify a link for DJ-1 with parkin or PINK1...
May 2015: European Journal of Neuroscience
Jong Min Park, Ju Whan Kim, Ki Baik Hahm
No abstract text is available yet for this article.
April 2015: Digestive Diseases and Sciences
Toshiharu Sakurai, Hiroshi Kashida, Satoru Hagiwara, Naoshi Nishida, Tomohiro Watanabe, Jun Fujita, Masatoshi Kudo
AIMS AND METHODS: Heat shock protein A4 (HSPA4, also called Apg-2), a member of the HSP110 family, regulates the immune response in the gut. Here, we assessed the involvement of HSPA4 in gastric ulcer healing by using fibroblasts from wild-type and HSPA4-deficient mice, a murine gastric ulcer model, and samples from 65 patients with gastric cancer. RESULTS: HSPA4 expression was inversely correlated with gastric ulcer healing following endoscopic resection of gastric cancer...
April 2015: Digestive Diseases and Sciences
Teppei Adachi, Toshiharu Sakurai, Hiroshi Kashida, Hiromasa Mine, Satoru Hagiwara, Shigenaga Matsui, Koji Yoshida, Naoshi Nishida, Tomohiro Watanabe, Katsuhiko Itoh, Jun Fujita, Masatoshi Kudo
BACKGROUND: Expression of heat shock protein A4 (HSPA4, also called Apg-2), a member of the HSP110 family, is induced by several forms of stress. The physiological and pathological functions of HSPA4 in the intestine remain to be elucidated. METHODS: We assessed HSPA4 expression and function by generating HSPA4-deficient mice and using 214 human intestinal mucosa samples from patients with inflammatory bowel disease (IBD). RESULTS: In the colonic mucosa of patients with IBD, a significant correlation was observed between the expression of HSPA4 and antiapoptotic protein Bcl-2, a T-cell-derived cytokine IL-17 or stem cell markers, such as Sox2...
January 2015: Inflammatory Bowel Diseases
Tamami Morisaki, Masakazu Yashiro, Anna Kakehashi, Azusa Inagaki, Haruhito Kinoshita, Tatsunari Fukuoka, Hiroaki Kasashima, Go Masuda, Katsunobu Sakurai, Naoshi Kubo, Kazuya Muguruma, Masaichi Ohira, Hideki Wanibuchi, Kosei Hirakawa
Cancer stem cells (CSCs) are responsible for cancer progression, metastasis, and recurrence. To date, the specific markers of CSCs remain undiscovered. The aim of this study was to identify novel biomarkers of gastric CSCs for clinical diagnosis using proteomics technology. CSC-like SP cells, OCUM-12/SP cells, OCUM-2MD3/SP cells, and their parent OCUM-12 cells and OCUM-2MD3 cells were used in this study. Protein lysates from each cell line were analyzed using QSTAR Elite Liquid Chromatography with Tandem Mass Spectrometry, coupled with isobaric tags for relative and absolute quantitation technology...
2014: PloS One
Steven C Goodman, Ariadne Letra, Samuel Dorn, Ana Claudia Araujo-Pires, Andreia Espindola Vieira, Letícia Chaves de Souza, Mamatha Yadlapati, Gustavo Pompermaier Garlet, Renato Menezes Silva
INTRODUCTION: Cells from virtually all organisms respond to a variety of stresses by the rapid synthesis of a highly conserved set of polypeptides termed heat shock proteins (HSPs). HSPs protect cells under adverse conditions such as infection, inflammation, and disease. We hypothesize that endodontic infection might result in an imbalance in the expression of heat shock genes, accounting for different clinical outcomes in periapical lesions. METHODS: We analyzed the expression of 44 HSPs genes using a pathway-specific real-time polymerase chain reaction array in 93 human periapical granulomas and 24 healthy periodontal ligament tissues collected postoperatively...
June 2014: Journal of Endodontics
Yijun Zhou, Leilei Xu, Xinghua Song, Liwen Ding, Jiangtao Chen, Chong Wang, Yuling Gan, Xiaomeng Zhu, Yipin Yu, Qiuzhen Liang
PURPOSE: This study aims to investigate the differential expression proteins profile of spinal cord tissues after acute spinal cord injury (ASCI), provide preliminary results for further study and explore the secondary injury mechanisms underlying ASCI. METHODS: Using Allen's frame to establish ASCI model of Sprague-Dawley rats, then a stable isotope-labelled strategy using isobaric tags for relative and absolute quantitation (iTRAQ) coupled with two-dimensional (2D) liquid chromatography tandem mass spectrometry (2D LC-MS/MS) was performed to separate and identify differentially expressed proteins...
July 2014: European Spine Journal
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