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https://www.readbyqxmd.com/read/29665322/tumour-cell-expression-of-interleukin-6-receptor-%C3%AE-is-associated-with-response-rates-in-patients-treated-with-sunitinib-for-metastatic-clear-cell-renal-cell-carcinoma
#1
Martin Pilskog, Leif Bostad, Reidunn J Edelmann, Lars A Akslen, Christian Beisland, Oddbjørn Straume
Clear cell renal cell carcinoma (ccRCC) is the most common type of renal cell carcinoma, and anti-angiogenic treatment is currently first line therapy for metastatic ccRCC (mccRCC). Response rates and duration of response show considerable variation, and adverse events have a major influence on patient quality of life. The need for predictive biomarkers to select responders to receptor tyrosine kinase inhibitors upfront is urgent. We investigated the predictive value of immunohistochemical biomarkers associated with angiogenesis and systemic inflammation in mccRCC...
April 2018: Journal of Pathology. Clinical Research
https://www.readbyqxmd.com/read/29658585/inhibitors-of-heat-shock-protein-90-augment-endothelin%C3%A2-1%C3%A2-induced-heat-shock-protein-27-through-the-sapk-jnk-signaling-pathway-in-osteoblasts
#2
Kazuhiko Fujita, Takanobu Otsuka, Tetsu Kawabata, Go Sakai, Rie Matsushima-Nishiwaki, Osamu Kozawa, Haruhiko Tokuda
It has been previously reported that endothelin‑1 (ET‑1) stimulates the induction of heat shock protein (HSP) 27 through the activation of p38 mitogen‑activated protein (MAP) kinase and stress‑activated protein kinase/c‑Jun N‑terminal kinase (SAPK/JNK) in osteoblast‑like MC3T3‑E1 cells. The present study investigated whether HSP90, a high‑molecular‑weight HSP, was implicated in the ET‑1‑stimulated HSP27 induction in MC3T3‑E1 cells. The effects of HSP90 inhibitors on the induction of HSP27 were examined...
April 12, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29652520/hemolysis-induced-lung-vascular-leakage-contributes-to-the-development-of-pulmonary-hypertension
#3
Olga Rafikova, Elissa R Williams, Matthew L McBride, Marina Zemskova, Anup Srivastava, Vineet Nair, Ankit A Desai, Paul R Langlais, Evgeny Zemskov, Marc Simon, Lawrence J Mandarino, Ruslan Rafikov
RATIONALE: While hemolytic anemia-associated pulmonary hypertension (PH) and pulmonary arterial hypertension (PAH) are more common than the prevalence of idiopathic PAH alone, the role of hemolysis in the development of PAH is poorly characterized. OBJECTIVES: We hypothesized that hemolysis independently contributes to PAH pathogenesis via endothelial barrier dysfunction with resulting perivascular edema and inflammation. METHODS: Plasma samples from patients with and without PAH (both confirmed by right heart catheterization) were used to measure free hemoglobin (Hb) and its correlation with PAH severity...
April 13, 2018: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/29650953/hsp27-is-a-partner-of-jak2-stat5-and-a-potential-therapeutic-target-in-myelofibrosis
#4
Margaux Sevin, Lucia Kubovcakova, Nicolas Pernet, Sébastien Causse, Franck Vitte, Jean Luc Villeval, Catherine Lacout, Marine Cordonnier, Fernando Rodrigues-Lima, Gaétan Chanteloup, Matthieu Mosca, Marie-Lorraine Chrétien, Jean Noël Bastie, Sylvain Audia, Paul Sagot, Selim Ramla, Laurent Martin, Martin Gleave, Valérie Mezger, Radek Skoda, Isabelle Plo, Carmen Garrido, François Girodon, Aurélie de Thonel
Heat shock protein 27 (HSP27/HSPB1) is a stress-inducible chaperone that facilitates cancer development by its proliferative and anti-apoptotic functions. The OGX-427 antisense oligonucleotide against HSP27 has been reported to be beneficial against idiopathic pulmonary fibrosis. Here we show that OGX-427 is effective in two murine models of thrombopoietin- and JAKV617F-induced myelofibrosis. OGX-427 limits disease progression and is associated with a reduction in spleen weight, in megakaryocyte expansion and, for the JAKV617F model, in fibrosis...
April 12, 2018: Nature Communications
https://www.readbyqxmd.com/read/29627902/rosmarinic-acid-and-sirna-combined-therapy-represses-hsp27-hspb1-expression-and-induces-apoptosis-in-human-glioma-cells
#5
Aslıhan Şengelen, Evren Önay-Uçar
High expression of Hsp27 in glioma cells has been closely associated with tumor cell proliferation and apoptosis inhibition. The aim of the present study was to asses the effects of rosmarinic acid (RA) on Hsp27 expression and apoptosis in non-transfected and transfected human U-87 MG cells. The effect of rosmarinic acid was compared to quercetin, which is known to be a good Hsp27 inhibitor. In order to block the expression of Hsp27 gene (HSPB1), transfection with specific siRNAs was performed. Western blotting technique was used to assess the Hsp27 expression, and caspase-3 colorimetric activity assay was performed to determine apoptosis induction...
April 7, 2018: Cell Stress & Chaperones
https://www.readbyqxmd.com/read/29604402/effects-of-aquatic-and-land-based-exercises-on-amyloid-beta-heat-shock-protein-27-and-pulse-wave-velocity-in-elderly-women
#6
Ji-Hyeon Kim, Young-Suk Jung, Jong-Won Kim, Min-Seong Ha, Soo-Min Ha, Do-Yeon Kim
BACKGROUND: Alzheimer's disease is a neurodegenerative brain disease resulting from the deterioration of neuronal cells and vascular dementia, the latter of which results from cerebrovascular disorders. Exercise is effective in preventing and treating degenerative brain diseases as it activates blood flow to the brain, increases nerve production in the hippocampus, and promotes the expression of synaptic plasticity-related proteins. Therefore, this study investigated the effects of 16-week aquatic and land-based exercise programs on amyloid beta (Aβ), heat shock protein (HSP) 27 levels, and pulse wave velocity (PWV)...
March 28, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29604279/resveratrol-protects-hacat-cells-from-ultraviolet-b-induced-photoaging-via-upregulation-of-hsp27-and-modulation-of-mitochondrial-caspase-dependent-apoptotic-pathway
#7
Fen Zhou, Xin Huang, Yun Pan, Di Cao, Chuan Liu, Yiyi Liu, Aijun Chen
The skin is the outermost protective barrier between the internal and external environment in humans. Chronic exposure to ultraviolet (UV) radiation is a major cause of photoaging. Evidence suggests that resveratrol suppresses UVB-induced photoaging. In this study, we aimed to investigate the protective effects of resveratrol against UVB-induced photoaging in HaCaT cells and to determine the underlying mechanisms. Apoptosis of normal or HSP27-overexpressing HaCaT cells in the presence of UVB was analyzed by flow cytometry...
March 28, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29592877/analysis-of-hsp27-and-the-autophagy-marker-lc3b-puncta-following-preoperative-chemotherapy-identifies-high-risk-osteosarcoma-patients
#8
J Andrew Livingston, Wei-Lien Wang, Jen-Wei Tsai, Alexander J Lazar, Cheuk Hong Leung, Heather Lin, Shailesh Advani, Najat Daw, Janice Santiago-O'Farrill, Mario Hollomon, Nancy B Gordon, Eugenie S Kleinerman
Chemotherapy-induced autophagy is a proposed mechanism of chemoresistance and potential therapeutic target in osteosarcoma. We evaluated heat shock protein 27 (HSP27) and autophagy-related proteins as predictors of pathologic treatment response and prognostic markers among osteosarcoma patients who received standard chemotherapy. We analyzed 394 tumor specimens (pre-treatment, post-treatment, and metastases) from 260 osteosarcoma patients by immunohistochemistry for cytoplasmic light chain 3B (LC3B)-positive puncta, sequestosome 1 (SQSTM1), high mobility group box 1 (HMGB1), and HSP27 expression...
March 28, 2018: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/29589779/telomere-length-is-independently-associated-with-age-oxidative-biomarkers-and-sport-training-in-skeletal-muscle-of-healthy-adult-males
#9
Fiorenza Magi, Ivan Dimauro, Fabrizio Margheritini, Guglielmo Duranti, Neri Mercatelli, Cristina Fantini, Francesca Romana Ripani, Stefania Sabatini, Daniela Caporossi
In skeletal muscle, which mainly contains postmitotic myonuclei, it has been suggested that telomere length remains roughly constant throughout adult life, or shortens in response to physiopathological conditions in muscle diseases or in the elderly. However, telomere length results from both the replicative history of a specific tissue and the exposure to environmental, DNA damage-related factors, therefore the predictive biological significance of telomere measures should combine the analysis of the various interactive factors...
March 28, 2018: Free Radical Research
https://www.readbyqxmd.com/read/29580736/quantitative-phosphoproteomic-analysis-of-caprine-muscle-with-high-and-low-meat-quality
#10
Manshun Liu, Yanchao Wei, Xin Li, Siew Young Quek, Jing Zhao, Huazhen Zhong, Dequan Zhang, Yongfeng Liu
During the conversion of muscle to meat, protein phosphorylation can regulate various biological processes that have important effects on meat quality. To investigate the phosphorylation pattern of protein on rigor mortis, goat longissimus thoracis and external intercostals were classified into two groups (high quality and low quality), and meat quality was evaluated according to meat quality attributes (Warner-Bratzler shear force, Color, pH and drip loss). A quantitative mass spectrometry-based phosphoproteomic study was conducted to analyze the caprine muscle at 12h postmortem applying the TiO2 -SIMAC-HILIC (TiSH) phosphopeptide enrichment strategy...
January 2, 2018: Meat Science
https://www.readbyqxmd.com/read/29571878/expression-analysis-of-protein-homeostasis-pathways-in-the-peripheral-blood-mononuclear-cells-of-sporadic-amyotrophic-lateral-sclerosis-patients
#11
Abhishek Vats, Mandaville Gourie-Devi, Kavita Ahuja, Ankkita Sharma, Saima Wajid, Nirmal Kumar Ganguly, Vibha Taneja
Misfolded protein aggregates are the hallmark of Amyotrophic Lateral Sclerosis (ALS) which suggests involvement of protein homeostasis pathways in etiology of ALS. However, status of protein homeostasis in peripheral blood of ALS is not well established. We analyzed expression levels of key genes of proteostasis pathways in peripheral blood mononuclear cells (PBMCs) of sporadic ALS (sALS) patients and healthy controls. Increased protein carbonylation was observed in patients reflecting oxidative damage in PBMCs...
April 15, 2018: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/29568951/effect-of-liposome%C3%A2-mediated-hsp27-transfection-on-collagen-synthesis-in-alveolar-type-ii-epithelial-cells
#12
Haijing Deng, Xuemin Gao, Haibing Peng, Jin Wang, Xiaoli Hou, Hong Xu, Fang Yang
To investigate the effect of liposome Lipofectamine® 2000‑mediated HSP27 plasmid transfection in A549 human alveolar type II epithelial cell line on collagen synthesis during transforming growth factor‑β1 (TGF‑β1)‑induced type II epithelial cell transition to myofibroblasts. Cells were transfected with varying ratios of the Lipofectamine® 2000‑mediated heat shock protein 27 (HSP27) plasmid and the transfection efficiency was determined using flow cytometry. The maximum transfection efficacy was confirmed by laser confocal microscopy...
March 14, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29563808/the-clinicopathological-and-prognostic-value-of-hsp27-in-hepatocellular-carcinoma-a-systematic-review-and-meta-analysis
#13
Chaojie Liang, Yingchen Xu, Hua Ge, Guangming Li, Jixiang Wu
Background: In the recent past, there is increasing evidence demonstrating that HSP27 plays a key role in tumor progression. However, the relationship between HSP27 expression and the clinicopathological features of hepatocellular carcinoma (HCC), as well as its prognostic value in HCC patients remain controversial. Accordingly, we conducted a meta-analysis to assess the correlation between HSP27 expression and HCC, and determine the prognostic value of HSP27 in HCC. Methods: The data included clinicopathological features and survival information extracted from the published literature in the databases PubMed, EMBASE, Cochrane Library, Web of Science, CNKI, and Wan Fang...
2018: OncoTargets and Therapy
https://www.readbyqxmd.com/read/29550762/phosphorylated-hsp27-is-mutually-exclusive-with-atrx-loss-and-the-idh1-r132h-mutation-and-may-predict-better-prognosis-among-glioblastomas-without-the-idh1-mutation-and-atrx-loss
#14
Hong-Qing Cai, Peng-Fei Wang, Hai-Peng Zhang, Zhi-Jian Cheng, Shou-Wei Li, Jie He, Yu Zhang, Jia-Jie Hao, Ming-Rong Wang, Chang-Xiang Yan, Jing-Hai Wan
AIM: To identify biomarkers for accurate classification of glioma. PATIENTS AND METHODS: We evaluated the heat shock protein 27 (Hsp27), phosphorylated Hsp27 (p-Hsp27), ATRX and IDH1R132H proteins using immunohistochemistry in 421 glioma tissues. The χ2 test was used to assess the relationship between molecular alterations and clinico-pathological parameters. Kaplan-Meier survival curves were constructed, and differences were detected by the log-rank test. RESULTS: We found that Hsp27 and p-Hsp27 were mainly expressed in aggressive astrocytic gliomas...
March 17, 2018: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/29541457/ristocetin-induces-phosphorylated-hsp27-hspb1-release-from-the-platelets-of-type-2-dm-patients-anti-platelet-agent-effect-on-the-release
#15
Haruhiko Tokuda, Gen Kuroyanagi, Takashi Onuma, Yukiko Enomoto, Tomoaki Doi, Hiroki Iida, Takanobu Otsuka, Shinji Ogura, Toru Iwama, Kumi Kojima, Osamu Kozawa
It has been previously reported that HSP27 is released from platelets in type 2 diabetes mellitus (DM) patients according to phosphorylation. In the present study, we investigated the effect of ristocetin, a glycoprotein (GP)Ib/IX/V activator, on the release of HSP27 and the effect of anti-platelet agents, such as acetylsalicylic acid (ASA), on this release. Forty-six patients with type 2 DM were recruited, and classified into two groups depending on administration of anti-platelet agents, resulting in 31 patients without these agents (control group) and 15 patients with them (anti-platelet group)...
April 2018: Biomedical Reports
https://www.readbyqxmd.com/read/29540510/identification-by-proteomics-of-oviductal-sperm-interacting-proteins
#16
Julie Lamy, Perrine Nogues, Lucie Combes-Soia, Guillaume Tsikis, Valérie Labas, Pascal Mermillod, Xavier Druart, Marie Saint-Dizier
The interactions between oviductal fluid (OF) proteins and spermatozoa play major roles in sperm selection, storage and capacitation before fertilization. However, only a few sperm-interacting proteins in the OF has been identified and very little is known about the regulation of sperm-oviduct interactions across the estrous cycle. Samples of bovine frozen-thawed sperm from three bulls were incubated with OF at pre-, post-ovulatory stages (Pre/Post-ov) or luteal phase (LP) of the estrous cycle (7 mg/ml proteins, treated groups), or with a protein-free media (control)...
March 14, 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/29534015/targeting-hodgkin-and-reed-sternberg-cells-with-an-inhibitor-of-heat-shock-protein-90-molecular-pathways-of-response-and-potential-mechanisms-of-resistance
#17
Priscilla Segges, Stephany Corrêa, Bárbara Du Rocher, Gabriela Vera-Lozada, Flavia Krsticevic, Debora Arce, Cinthya Sternberg, Eliana Abdelhay, Rocio Hassan
Classical Hodgkin lymphoma (cHL) cells overexpress heat-shock protein 90 (HSP90), an important intracellular signaling hub regulating cell survival, which is emerging as a promising therapeutic target. Here, we report the antitumor effect of celastrol, an anti-inflammatory compound and a recognized HSP90 inhibitor, in Hodgkin and Reed-Sternberg cell lines. Two disparate responses were recorded. In KM-H2 cells, celastrol inhibited cell proliferation, induced G0/G1 arrest, and triggered apoptosis through the activation of caspase-3/7...
March 13, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29533813/a-new-insight-into-meat-toughness-of-callipyge-lamb-loins-the-relevance-of-anti-apoptotic-systems-to-decreased-proteolysis
#18
Traci Cramer, Moriah L Penick, Jolena N Waddell, Chris A Bidwell, Yuan H Brad Kim
The objective of this study was to determine associations of small heat shock proteins (sHSPs) in tenderness development of loins from callipyge and normal genotype lambs. Loins (M. longissimus lumborum) from sixteen lambs across four genotypes were collected throughout 9 days of postmortem aging. The loins from callipyge lambs had more intact desmin and troponin T throughout aging periods, as well as less μ-calpain autolysis and more calpastatin compared to loins from other genotypes (P < 0.05). Delayed onset of apoptosis was found in the callipyge loins indicated by less cytochrome c and more inactive procaspase-3 compared to normal lamb loins (P < 0...
March 6, 2018: Meat Science
https://www.readbyqxmd.com/read/29532457/heat-shock-protein-27-and-sex-selective-regulation-of-muscarinic-and-par2-receptor-mediated-vasodilation-differential-sensitivity-to-enos-inhibition
#19
Vivek Krishna Pulakazhi Venu, Mahmoud Saifeddine, Koichiro Mihara, Mahmoud El-Daly, Darrell Belke, Jonathan L E Dean, Edward R O'Brien, Simon A Hirota, Morley D Hollenberg
BACKGROUND AND PURPOSE: Previously, we demonstrated that exogenous Heat Shock Protein 27 (HSP27/gene, HSPB1) treatment of human endothelial progenitor cells (EPCs) increases the synthesis and secretion of VEGF, improves EPC-migration/re-endothelialization and decreases neo-intima formation, suggesting a role for HSPB1 in regulating EPC function. We hypothesized that HSPB1 could also affect mature endothelial cells (ECs) to alter EC-mediated vasoreactivity in vivo. Our work focused on eNOS/NO-dependent relaxation caused by acetylcholine and the coagulation pathway-activated receptor, proteinase-activated receptor-2 (PAR2)...
March 12, 2018: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29525670/cellular-hsp27-interacts-with-classical-swine-fever-virus-ns5a-protein-and-negatively-regulates-viral-replication-by-the-nf-%C3%AE%C2%BAb-signaling-pathway
#20
Shifeng Ling, Mingyang Luo, Shengnan Jiang, Jiayu Liu, Chunying Ding, Qinghuan Zhang, Huancheng Guo, Wenjie Gong, Changchun Tu, Jinfu Sun
Classical swine fever virus (CSFV) nonstructural protein NS5A is a multifunctional protein functioning in regulation of viral genome replication, protein translation and assembly by interaction with viral or host proteins. Here, heat shock protein 27 (Hsp27) has been identified as a novel binding partner of NS5A by using His tag "pull down" coupled with shotgun LC-MS/MS, with interaction of both proteins further confirmed by co-immunoprecipitation and laser confocal assays. In PK-15 cells, silencing of Hsp27 expression by siRNA enhanced CSFV replication, and upregulation of Hsp27 inhibited viral proliferation...
March 8, 2018: Virology
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