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Xin Cai, Hongjian Ding, Yanxia Liu, Gaofeng Pan, Qingguo Li, Zhen Yang, Weiyan Liu
High mobility group proteins (HMGs) are the second most abundant chromatin proteins and exert global genomic functions in the establishment of active or inactive chromatin domains. Through interaction with nucleosomes, transcription factors, nucleosome-remodeling machines and histones, the HMGs family proteins contribute to the fine tuning of transcription in response to rapid environmental changes. Mammalian high mobility group Bs (HMGBs) are characterized by two tandem HMG box domains followed by a long acidic tail...
January 9, 2017: Acta Biochimica et Biophysica Sinica
Hyong Woo Choi, Daniel F Klessig
BACKGROUND: Multicellular organisms have evolved systems/mechanisms to detect various forms of danger, including attack by microbial pathogens and a variety of pests, as well as tissue and cellular damage. Detection via cell-surface receptors activates an ancient and evolutionarily conserved innate immune system. RESULT: Potentially harmful microorganisms are recognized by the presence of molecules or parts of molecules that have structures or chemical patterns unique to microbes and thus are perceived as non-self/foreign...
October 26, 2016: BMC Plant Biology
Shengnan Guo, Yuanyuan Wang, Yu Gao, Yinxu Zhang, Mingzi Chen, Minghao Xu, Lu Hu, Yu Jing, Fangyu Jing, Chen Li, Qingjun Wang, Zhitu Zhu
BACKGROUND High mobility group-box 3 (HMGB3) has been shown to affect tumor initiation and progression. This research aimed to investigate the role of HMGB3 in gastric cancer (GC) cell proliferation, migration, invasion, chemoresistance, and its potential molecular mechanisms. MATERIAL AND METHODS GC MGC803 and BGC823 cells were transfected with siRNA targeting the HMGB3 gene. The expressions of HMGB3 protein in MGC803 and BGC823 cells after transfection were detected by Western blot assays. We detected cell proliferation and cell cycle by MTT and flow cytometry assay...
October 24, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
Xiunan Li, Yumei Wu, Aihui Liu, Xin Tang
MiR-27b downregulation is significantly associated with tamoxifen resistance in breast cancer cells. However, how it is downregulated in tamoxifen resistant (TamR) breast cancer cells and its downstream regulation were not clear. By performing MSP assay and QRT-PCR analysis with the use of 5-AZA-dC, a DNA methyltransferase inhibitor, we observed that TamR MCF-7 cells had significantly higher levels of methylation in the miR-27b promoter region than tamoxifen sensitive MCF-7 (TamS) cells and demethylation restored miR-27b expression...
September 2, 2016: Biochemical and Biophysical Research Communications
Daphne C Avgousti, Christin Herrmann, Katarzyna Kulej, Neha J Pancholi, Nikolina Sekulic, Joana Petrescu, Rosalynn C Molden, Daniel Blumenthal, Andrew J Paris, Emigdio D Reyes, Philomena Ostapchuk, Patrick Hearing, Steven H Seeholzer, G Scott Worthen, Ben E Black, Benjamin A Garcia, Matthew D Weitzman
Viral proteins mimic host protein structure and function to redirect cellular processes and subvert innate defenses. Small basic proteins compact and regulate both viral and cellular DNA genomes. Nucleosomes are the repeating units of cellular chromatin and play an important part in innate immune responses. Viral-encoded core basic proteins compact viral genomes, but their impact on host chromatin structure and function remains unexplored. Adenoviruses encode a highly basic protein called protein VII that resembles cellular histones...
July 7, 2016: Nature
J W Yu, W Mai, Y L Cui, L Y Kong
The objective of this study was to investigate the key genes and pathways associated with thyroid carcinoma. Based on the microarray data of GSE27155, we identified the differentially expressed genes (DEGs) between four types of thyroid carcinoma samples (papillary carcinoma (PTC), oncocytic carcinoma (OTC), follicular carcinoma (FTC) and anaplastic carcinoma (ATC)) and normal controls. With the obtained DEGs, we performed gene functional interaction (FI) network analysis. Then we conducted Venn diagram analysis to identify the intersection and specific DEGs of the four types of thyroid carcinomas...
2016: Neoplasma
Hyong Woo Choi, Murli Manohar, Patricia Manosalva, Miaoying Tian, Magali Moreau, Daniel F Klessig
Damage-associated molecular pattern molecules (DAMPs) signal the presence of tissue damage to induce immune responses in plants and animals. Here, we report that High Mobility Group Box 3 (HMGB3) is a novel plant DAMP. Extracellular HMGB3, through receptor-like kinases BAK1 and BKK1, induced hallmark innate immune responses, including i) MAPK activation, ii) defense-related gene expression, iii) callose deposition, and iv) enhanced resistance to Botrytis cinerea. Infection by necrotrophic B. cinerea released HMGB3 into the extracellular space (apoplast)...
March 2016: PLoS Pathogens
A G Sandoval-Hernández, H G Hernández, A Restrepo, J I Muñoz, G F Bayon, A F Fernández, M F Fraga, G P Cardona-Gómez, H Arboleda, Gonzalo H Arboleda
The liver X receptor agonist, GW3965, improves cognition in Alzheimer's disease (AD) mouse models. Here, we determined if short-term GW3965 treatment induces changes in the DNA methylation state of the hippocampus, which are associated with cognitive improvement. Twenty-four-month-old triple-transgenic AD (3xTg-AD) mice were treated with GW3965 (50 mg/kg/day for 6 days). DNA methylation state was examined by modified bisulfite conversion and hybridization on Illumina Infinium Methylation BeadChip 450 k arrays...
February 2016: Journal of Molecular Neuroscience: MN
Jing Gao, Zhengzhi Zou, Jing Gao, Haifang Zhang, Zhicai Lin, Yaya Zhang, Xianyang Luo, Changhua Liu, Jingdun Xie, Chengfu Cai
HMGB3, an X-linked member of the high-mobility group (HMG) superfamily of HMG proteins, has been shown to affect numerous tumorigenic progression. However, the expression and the prognostic role of HMGB3 in esophageal squamous cell carcinoma (ESCC) remained unknown. In this study, we examined the HMGB3 expression in ESCC tissues and adjacent nontumorous tissues by qRT-PCR and immuohistochemistry. Statistical analyses were applied to test for prognostic and diagnostic associations. The mRNA levels of HMGB3 were found to be significantly higher in tumorous tissues than in the adjacent normal tissues...
2015: International Journal of Clinical and Experimental Pathology
Minghui Li, Yong Cai, Hongmei Zhao, Zongyuan Xu, Qingsong Sun, Man Luo, Lizhi Gu, Min Meng, Xiang Han, Hong Sun
Human urinary bladder cancer (UBC) is the fourth most common cancer and the eighth most common cause of cancer death in the USA. High mobility group box 3 (HMGB3), a member of a family of proteins containing one or more high mobility group DNA binding motifs, was reported to be overexpressed in a variety of human cancers. However, the expression and role of HMGB3 in human UBC remains unclear. Here, we found that UBC patients had upregulated HMGB at both mRNA and protein levels. Immunochemistry (IHC) evaluation of HMGB3 expression in 113 UBC clinical specimens showed that high expression of HMGB3 had positive correlation with UBC tumor size (P = 0...
June 2015: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
Ruggiero Norfo, Roberta Zini, Valentina Pennucci, Elisa Bianchi, Simona Salati, Paola Guglielmelli, Costanza Bogani, Tiziana Fanelli, Carmela Mannarelli, Vittorio Rosti, Daniela Pietra, Silvia Salmoiraghi, Andrea Bisognin, Samantha Ruberti, Sebastiano Rontauroli, Giorgia Sacchi, Zelia Prudente, Giovanni Barosi, Mario Cazzola, Alessandro Rambaldi, Stefania Bortoluzzi, Sergio Ferrari, Enrico Tagliafico, Alessandro M Vannucchi, Rossella Manfredini
Primary myelofibrosis (PMF) is a myeloproliferative neoplasm characterized by megakaryocyte (MK) hyperplasia, bone marrow fibrosis, and abnormal stem cell trafficking. PMF may be associated with somatic mutations in JAK2, MPL, or CALR. Previous studies have shown that abnormal MKs play a central role in the pathophysiology of PMF. In this work, we studied both gene and microRNA (miRNA) expression profiles in CD34(+) cells from PMF patients. We identified several biomarkers and putative molecular targets such as FGR, LCN2, and OLFM4...
September 25, 2014: Blood
Xudong Chen, Guoqiang Zhao, Fuqing Wang, Fenglan Gao, Hailan Luo, Yuanyuan Wang, Yuwen Du, Xiaonan Chen, Changgui Xue, Ziming Dong, Guohua Song
The high mobility group-box 3 (HMGB3) protein belongs to the high mobility group box (HMG-box) subfamily, and recent studies have shown that HMGB3 is an oncogene for leukemia. HMGB3 is also expressed at a high level in the progression phase of breast and gastric cancer (GC). Using bioinformatic analyses, we found that HMGB3 is a potential target for miR-513b. However, the pathophysiological role of miR-513b and its relevance to the growth and development of GC have yet to be investigated. This study focuses on whether miR-513b acts as a tumor suppressor in GC...
November 2014: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
Alan F Scott, David W Mohr, Laura M Kasch, Jill A Barton, Raquel Pittiglio, Roxann Ingersoll, Brian Craig, Beth A Marosy, Kimberly F Doheny, William C Bromley, Thomas H Roderick, Nicolas Chassaing, Patrick Calvas, Shreya S Prabhu, Ethylin Wang Jabs
IMPORTANCE: Microphthalmias are rare disorders whose genetic bases are not fully understood. HMGB3 is a new candidate gene for X-linked forms of this disease. OBJECTIVE: To identify the causative gene in a pedigree with an X-linked colobomatous microphthalmos phenotype. DESIGN, SETTING, AND PARTICIPANTS: Whole-genome sequencing and chromosome X-exome-targeted sequencing were performed at the High Throughput Sequencing Laboratory of the Genetic Resources Core Facility at the Johns Hopkins University School of Medicine on the DNA of the male proband and informatically filtered to identify rare variants...
October 2014: JAMA Ophthalmology
Y Gong, Y Cao, L Song, J Zhou, C Wang, B Wu
Gastric cancer is a major health problem worldwide; it is the second most common cause of cancer death in the world. Recent studies indicate that the high-mobility group (HMG) of chromosomal proteins is associated with cancer progression. However, HMGB3 has been little studied. We analyzed the co-expression network between HMGB3 and differentially-expressed genes in the GSE17187 database, identifying the relevant transcription factors, and the conserved domain of HMGB3 to understand the underlying regulation mechanisms involved in gastric cancer...
2013: Genetics and Molecular Research: GMR
Adrien Bosseboeuf, Aude Gautier, Pierrick Auvray, Sylvie Mazan, Pascal Sourdaine
In dogfish, spermatogenesis progresses from a restricted germinative zone, which lines the dorsal testicular vessel. Single spermatogonia (A(s)), including the spermatogonial stem cells (SSCs), produce successively paired (A(p)), undifferentiated (A(u4) to A(u512)), and differentiated (A(d1) to A(d8)) spermatogonia and preleptotene (PL) spermatocytes through 13 mitoses. Dogfish spermatogonial subpopulations present classical morphological characteristics but cannot be distinguished on the basis of molecular markers...
January 2014: Reproduction: the Official Journal of the Society for the Study of Fertility
Ola A Elgamal, Jong-Kook Park, Yuriy Gusev, Ana Clara P Azevedo-Pouly, Jinmai Jiang, Avtar Roopra, Thomas D Schmittgen
Identifying targets of dysregulated microRNAs (miRNAs) will enhance our understanding of how altered miRNA expression contributes to the malignant phenotype of breast cancer. The expression of miR-205 was reduced in four breast cancer cell lines compared to the normal-like epithelial cell line MCF10A and in tumor and metastatic tissues compared to adjacent benign breast tissue. Two predicted binding sites for miR-205 were identified in the 3' untranslated region of the high mobility group box 3 gene, HMGB3...
2013: PloS One
Chunrong Yang, Lijun Chen, Jianguo Su, Xiaoli Feng, Youliang Rao
High mobility group box 3 (HMGB3) protein is a universal sentinel in the activation of innate antiviral immune responses in mammalian cells of limited tissues. However, the underlying immune functions of HMGB3 responding to viruses and viral/bacterial pathogen-associated molecular patterns (PAMPs) are still unknown in teleosts. In the present study, two novel homologs of grass carp (Ctenopharyngodon idella) HMGB3 (designated as CiHMGB3a and CiHMGB3b) were identified and characterized. Quantitative RT-PCR analysis showed that CiHMGB3a and CiHMGB3b were widely expressed in tissues...
November 2013: Fish & Shellfish Immunology
Jing Xu, Huaru Tian, Xingyin Liu, Wei Wang, Aihua Liang
The high-mobility-group (HMG)-box domain represents a very versatile protein domain that mediates the DNA-binding of non-sequence-specific and sequence-specific proteins. HMG-box proteins are involved in various nuclear functions, including modulating chromatin structure and genomic stability. In this study, we identified the gene HMGB3 in Tetrahymena thermophila. The predicted HmgB3p contained a single HMG-box, an SK-rich-repeat domain and a neutral phosphorylated C-terminal. HMGB3 was expressed in the growth and starvation stages...
September 10, 2013: Gene
Ning Song, Bao Liu, Jian-Ling Wu, Rui-Fang Zhang, Lin Duan, Wen-Shu He, Cong-Min Zhang
HMGB3 overexpression has been reported in a variety of human cancers. However, the role of HMGB3 in human non-small cell lung cancer (NSCLC) remains unclear. In this study, the HMGB3 expression was examined at mRNA and protein levels by quantitative real-time reverse transcriptase-polymerase chain reaction (qRT-PCR), Western blotting, and immunohistochemistry in NSCLC tissues and adjacent non-cancerous tissues. Statistical analyses were applied to test the associations between HMGB3 expression, clinicopathologic factors, and prognosis...
October 2013: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
Hua-Rong Tang, Xian-Qin Luo, Gang Xu, Yan Wang, Zhi-Jun Feng, Hui Xu, Ya-Wei Shi, Qin Zhang, Li-Guang Wu, Chun-Quan Xue, Cheng-Wei Wang, Chao-Yang Wu
AIM: To elucidate high mobility group-box 3 (HMGB3) protein expression in gastric adenocarcinoma, its potential prognostic relevance, and possible mechanism of action. METHODS: Ninety-two patients with gastric adenocarcinomas surgically removed entered the study. HMGB3 expression was determined by immunohistochemistry through a tissue microarray procedure. The clinicopathologic characteristics of all patients were recorded, and regular follow-up was made for all patients...
December 28, 2012: World Journal of Gastroenterology: WJG
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