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https://www.readbyqxmd.com/read/29792338/molecular-mechanism-for-the-influence-of-gender-dimorphism-on-alcoholic-liver-injury-in-mice
#1
S-Q Li, P Wang, D-M Wang, H-J Lu, R-F Li, L-X Duan, S Zhu, S-L Wang, Y-Y Zhang, Y-L Wang
It is known that women develop alcoholic liver injury more rapidly and have a lower alcohol toxic threshold than men. However, the detailed molecular mechanisms remain unclear. The precise mechanism responsible for the sex difference needs to be determined. Female and male mice were given ethanol by intragastric infusion every day for 4 weeks. The pathological changes were detected by hematoxylin-eosin, Sirius red, oil red O, periodic acid-Schiff, and Hochest33258 staining in the liver of female and male mice...
January 1, 2018: Human & Experimental Toxicology
https://www.readbyqxmd.com/read/29791027/phenotypical-and-molecular-changes-in-nodule-in-nodule-hepatocellular-carcinoma-with-pathogenetical-implications
#2
Noemi Rudini, Chiara Novello, Annarita Destro, Elena Riboldi, Matteo Donadon, Luca Viganò, Emanuela Morenghi, Massimo Roncalli, Luca Di Tommaso
BACKGROUND: Nodule in nodule hepatocellular carcinoma (N/N HCC) is a convincing proof of multistep hepatocarcinogenesis. In this lesion, an inner HCC develops within an outer more differentiated tumor, which can be rapidly taken over by the former so that N/N HCC is rarely detected. METHODS AND RESULTS: Ten resected N/N HCC in cirrhosis characterized, as outer lesions, by early (n.3) and G1 (n.7) HCC and, as inner lesions, by G1 (n.3) and G2 (n.7) HCC. The largest/smallest diameters of outer and inner nodules were, respectively, 20/6 and 16/4 mm...
May 23, 2018: Histopathology
https://www.readbyqxmd.com/read/29789443/low-intensity-pulsed-ultrasound-stimulation-facilitates-in-vitro-osteogenic-differentiation-of-human-adipose-derived-stem-cells-via-up-regulation-of-heat-shock-protein-hsp-70-hsp90-and-bone-morphogenetic-protein-bmp-signaling-pathway
#3
Zhonglei Zhang, Yalin Ma, Shaowen Guo, Yi He, Gang Bai, Wenjun Zhang
Low-intensity pulsed ultrasound (LIPUS) has positive effects on osteogenic differentiation. However, the effect of LIPUS on osteogenic differentiation of human adipose-derived stem cells (hASCs) is unclear. In the present study, we investigated whether LIPUS could promote the proliferation and osteogenic differentiation of hASCs. hASCs were isolated and osteogenically induced with LIPUS stimulation at 20 and 30 mW cm-2 for 30 min day-1 Cell proliferation and osteogenic differentiation potential of hASCs were respectively analyzed by cell counting kit-8 assay, Alizarin Red S staining, real-time polymerase chain reaction, and Western blotting...
May 29, 2018: Bioscience Reports
https://www.readbyqxmd.com/read/29788207/potentiating-hsp104-activity-via-phosphomimetic-mutations-in-the-middle-domain
#4
Amber Tariq, JiaBei Lin, Megan M Noll, Mariana P Torrente, Korrie L Mack, Oscar Hernandez Murillo, Meredith E Jackrel, James Shorter
Hsp104 is a hexameric AAA + ATPase and protein disaggregase found in yeast, which can be potentiated via mutations in its middle domain (MD) to counter toxic phase separation by TDP-43, FUS and α-synuclein connected to devastating neurodegenerative disorders. Subtle missense mutations in the Hsp104 MD can enhance activity, indicating that post-translational modification of specific MD residues might also potentiate Hsp104. Indeed, several serine and threonine residues throughout Hsp104 can be phosphorylated in vivo...
August 1, 2018: FEMS Yeast Research
https://www.readbyqxmd.com/read/29785917/effect-of-season-and-breed-on-physiological-and-blood-parameters-in-buffaloes
#5
Liu Shenhe, Li Jun, Li Zipeng, Deng Tingxian, Zia Ur Rehman, Zhou Zichao, Yang Liguo
In this Research Communication we describe the effect of temperature and humidity index (THI) on various physiological traits, the plasma heat shock protein 70 (HSP70), heat shock protein 90 (HSP90) and cortisol levels and other blood parameters in crossbred buffalo (Nili-Ravi × Murrah) and Mediterranean buffalo to compare their tolerance to heat stress. As expected, crossbred buffalo had a significantly higher rectal temperature (RT), body surface temperature (BT), respiratory rate (RR), HSP70 and HSP90 levels in summer compared to spring and winter...
May 2018: Journal of Dairy Research
https://www.readbyqxmd.com/read/29782836/dancing-with-the-diva-hsp90-client-interactions
#6
REVIEW
Martina Radli, Stefan G D Rüdiger
The molecular chaperone Hsp90 is involved in the folding, maturation and degradation of a large number structurally and sequentially unrelated clients, often connected to serious diseases. Elucidating the principles of how Hsp90 recognises this large variety of substrates is essential for comprehending the mechanism of this chaperone machinery, as well as it is a prerequisite for the design of client specific drugs targeting Hsp90. Here, we discuss the recent progress in understanding the substrate recognition principles of Hsp90 and its implications for the role of Hsp90 in the lifecycle of (signalling) molecules...
May 18, 2018: Journal of Molecular Biology
https://www.readbyqxmd.com/read/29781744/endurance-training-alters-ykl40-perm1-and-hsp70-skeletal-muscle-protein-contents-in-men-with-type-2-diabetes-mellitus
#7
Christian Brinkmann, Anika Kuckertz, Thorsten Schiffer, Wilhelm Bloch, Hans-Georg Predel, Klara Brixius
BACKGROUND: The fight against type 2 diabetes mellitus (T2DM) is tremendously challenging. This pilot study investigates whether endurance training (3 times per week for 3 months, moderate intensity) can change the skeletal muscle protein contents of chitinase-3-like protein-1 (YKL40), peroxisome proliferator-activated receptor y coactivator-1 and estrogen-related receptor-induced regulator in muscle-1 (PERM1) and heat-shock protein-70 (HSP70), which have been discussed as novel therapeutically relevant targets...
May 21, 2018: Endocrine Research
https://www.readbyqxmd.com/read/29781058/hammondia-sp-oocysts-shed-by-a-brazilian-fox-lycalopex-vetulus-differ-from-hammondia-heydorni-and-hammondia-triffittae
#8
Luís F P Gondim, Rodrigo M Soares, Silvia C Osaki, Alessandra Snak, Laura R Grillo, Nelson L M Fernandes, Anderson L de Carvalho
A Brazilian fox (Lycalopex vetulus) was rescued from a highway, and 16 days after maintained in captivity, the fox shed oocysts with sizes compatible with Hammondia sp. and Neospora caninum. DNA extracted from oocysts were initially tested in two PCRs targeting the internal transcribed spacer 1 (ITS-1) of the rDNA of Hammondia heydorni and the Nc-5 gene of N. caninum. A 270-bp product was visualized in the PCR for H. heydorni. No amplification was observed for N. caninum PCR. Since ITS-1-based PCR is not sufficient to differentiate Hammondia species derived from canids, oocyst DNA was examined using multilocus sequence analysis of five genetic fragments [intron 1 of the alpha tubulin gene (intron 1), internal transcribed spaces 1 and 2 (ITS-1 and ITS-2) of the rDNA, 28S rRNA gene (D2/D3 domain), and heat shock protein 70 (Hsp70)]...
May 21, 2018: Parasitology Research
https://www.readbyqxmd.com/read/29780609/serum-heat-shock-protein-70-levels-as-a-biomarker-for-inflammatory-processes-in-multiple-sclerosis
#9
Patricia Lechner, Dorothea Buck, Lisa Sick, Bernhard Hemmer, Gabriele Multhoff
Background: Inflammatory and neurodegenerative processes are hallmarks of multiple sclerosis (MS). The synthesis of the major stress-inducible heat shock protein 70 (Hsp70) is induced by inflammation. Objective: The purpose of this study is to determine whether Hsp70 in serum can serve as a potential biomarker to distinguish inflammatory and neurodegenerative processes in MS. Methods: Serum was obtained from 94 patients: 26 clinically isolated syndrome (CIS), 40 relapsing-remitting MS (RRMS), 19 secondary progressive MS (SPMS), and nine primary progressive MS (PPMS)...
April 2018: Multiple Sclerosis Journal—Experimental, Translational and Clinical
https://www.readbyqxmd.com/read/29779101/the-role-of-epibionts-of-bacteria-of-the-genus-pseudoalteromonas-and-cellular-proteasomes-in-the-adaptive-plasticity-of-marine-cold-water-sponges
#10
O I Kravchuk, A I Lavrov, A D Finoshin, N G Gornostaev, A A Georgiev, S B Abaturova, V S Mikhailov, Yu V Lyupina
It was found that cells of different color morphs of the cold-water marine sponges Halichondria panicea (Pallas, 1766) of the class Demospongiae differ in the content of epibionts of bacteria of the genus Pseudoalteromonas. The sponge cells with elevated levels of epibionts of bacteria of the genus Pseudoalteromonas showed an increased expression of Hsp70 proteins but had a reduced level of the proteasomal catalytic beta 5 subunit, which was accompanied by a change in their activity. Probably, epibionts of bacteria of the genus Pseudoalteromonas may affect the ubiquitin-proteasome system in the cells of cold-water marine sponges and, thereby, ensure their adaptive plasticity...
March 2018: Doklady. Biochemistry and Biophysics
https://www.readbyqxmd.com/read/29777767/biglycan-is-a-new-high-affinity-ligand-for-cd14-in-macrophages
#11
Heiko Roedig, Madalina V Nastase, Helena Frey, Kristin Moreth, Jinyang Zeng-Brouwers, Chiara Poluzzi, Louise Tzung-Harn Hsieh, Christian Brandts, Simone Fulda, Malgorzata Wygrecka, Liliana Schaefer
Sterile inflammation is a therapeutic target in many diseases where it represents an important initiator of disease progression. However, the detailed mechanisms underlying its evolution and biological relevance are not yet completely elucidated. Biglycan, a prototype extracellular matrix-derived damage-associated molecular pattern, mediates sterile inflammation in macrophages through Toll-like receptor (TLR) 2 and/or TLR4-dependent signaling pathways. Here we discovered that soluble biglycan is a novel high-affinity ligand for CD14, a well-known GPI-anchored co-receptor for TLRs...
May 16, 2018: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/29775584/conformational-activation-of-argonaute-by-distinct-yet-coordinated-actions-of-the-hsp70-and-hsp90-chaperone-systems
#12
Kotaro Tsuboyama, Hisashi Tadakuma, Yukihide Tomari
Loading of small RNAs into Argonaute, the core protein in RNA silencing, requires the Hsp70/Hsp90 chaperone machinery. This machinery also activates many other clients, including steroid hormone receptors and kinases, but how their structures change during chaperone-dependent activation remains unclear. Here, we utilized single-molecule Förster resonance energy transfer (smFRET) to probe the conformational changes of Drosophila Ago2 mediated by the chaperone machinery. We found that empty Ago2 exists in various closed conformations...
May 17, 2018: Molecular Cell
https://www.readbyqxmd.com/read/29775453/ts-hsp70-induces-protective-immunity-against-trichinella-spiralis-infection-in-mouse-by-activating-dendritic-cells-through-tlr2-and-tlr4
#13
Rui Zhang, Qing Sun, Yi Chen, Ximeng Sun, Yuan Gu, Zhang Zhao, Yuli Cheng, Limei Zhao, Jingjing Huang, Bin Zhan, Xinping Zhu
BACKGROUND: Trichinellosis is a serious food-borne parasitic zoonosis worldwide. In the effort to develop vaccine against Trichinella infection, we have identified Trichinella spiralis Heat shock protein 70 (Ts-Hsp70) elicits partial protective immunity against T. spiralis infection via activating dendritic cells (DCs) in our previous study. This study aims to investigate whether DCs were activated by Ts-Hsp70 through TLR2 and/or TLR4 pathways. METHODS AND FINDINGS: After blocking with anti-TLR2 and TLR4 antibodies, the binding of Ts-Hsp70 to DCs was significantly reduced...
May 18, 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29772540/hsp70-and-gama-semino-protein-as-possible-prognostic-marker-of-prostate-cancer
#14
Sanjay Kumar, Sanjeev Gurshaney, Yori Adagunodo, Erica Gage, Shezreen Qadri, Mahak Sharma, Shalie Malik, Upender Manne, Udai P Singh, Rajesh Singh, Manoj K Mishra
In the United States, Prostate Cancer (PCa) is the leading cause of cancer-related mortality in men. PCa resulted in abnormal growth and function of prostate gland such as secretion of high level of gamma-seminoprotein (gama-SM)/Prostate-Specific Antigen (PSA) which could be detected in the blood. Beside gama-SM protein, the levels of heat shock proteins (Hsp70) were also observed significantly high. Therefore, gama-SM and Hsp70 are unique proteins with high potential for PCa therapeutics and diagnostics. High level of Hsp70 suppresses apoptosis, thus allowing PCa cells to exist; however, depletion of Hsp70 induces apoptosis in PCa cells...
June 1, 2018: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/29770483/melatonin-modulates-dysregulated-circadian-clocks-in-mice-with-diethylnitrosamine-induced-hepatocellular-carcinoma
#15
Diana I Sánchez, Bárbara González-Fernández, Irene Crespo, Beatriz San-Miguel, Marcelino Álvarez, Javier González-Gallego, María Jesús Tuñón
Disruption of circadian rhythms, which are regulated by the circadian clock machinery, plays an important role in different long-term diseases including hepatocellular carcinoma (HCC). Melatonin has been reported to alleviate promotion and progression of HCC, but the potential contribution of circadian clock modulation is unknown. We investigated the effects of melatonin in mice which received diethylnitrosamine (DEN) (35 mg/kg body weight i.p.) once a week for 8 weeks. Melatonin was given at 5 or 10 mg/kg/day i...
May 16, 2018: Journal of Pineal Research
https://www.readbyqxmd.com/read/29766433/the-role-of-heat-shock-protein-70-in-oxidant-stress-and-inflammatory-injury-in-quail-spleen-induced-by-cold-stress
#16
Jiayi Ren, Chunpeng Liu, Dan Zhao, Jing Fu
The aim of this study was to investigate the role of heat shock protein 70 (Hsp70) in oxidative stress and inflammatory damage in the spleen of quails which were induced by cold stress. One hundred ninety-two 15-day-old male quails were randomly divided into 12 groups and kept at 12 ± 1 °C to examine acute and chronic cold stress. We first detected the changes in activities of antioxidant enzymes in the spleen tissue under acute and chronic cold stress. The activities of glutathione peroxidase (GSH-Px) fluctuated in acute cold stress groups, while they were significantly decreased (p < 0...
May 15, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29765493/long-term-exercise-protects-against-cellular-stresses-in-aged-mice
#17
Irina Belaya, Masataka Suwa, Tao Chen, Rashid Giniatullin, Katja M Kanninen, Mustafa Atalay, Shuzo Kumagai
The current study examined the effect of aging and long-term wheel-running on the expression of heat shock protein (HSP), redox regulation, and endoplasmic reticulum (ER) stress markers in tibialis anterior (T.A.) and soleus muscle of mice. Male mice were divided into young (Y, 3-month-old), old-sedentary (OS, 24-month-old), and old-exercise (OE, 24-month-old) groups. The OE group started voluntary wheel-running at 3 months and continued until 24 months of age. Aging was associated with a higher thioredoxin-interacting protein (TxNiP) level, lower thioredoxin-1 (TRX-1) to TxNiP ratio-a determinant of redox regulation and increased CHOP, an indicator of ER stress-related apoptosis signaling in both muscles...
2018: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29765202/inhibition-of-human-prostate-cancer-pc-3-cells-and-targeting-of-pc-3-derived-prostate-cancer-stem-cells-with-koenimbin-a-natural-dietary-compound-from-murraya-koenigii-l-spreng
#18
Behnam Kamalidehghan, Soudeh Ghafouri-Fard, Elahe Motevaseli, Fatemeh Ahmadipour
Background: Inhibition of prostate cancer stem cells (PCSCs) is an efficient curative maintenance protocol for the prevention of prostate cancer. The objectives of this study were to assess the efficiency of koenimbin, a major biologically active component of Murraya koenigii (L) Spreng, in the suppression of PC-3 cells and to target PC-3-derived cancer stem cells (CSCs) through apoptotic and CSC signaling pathways in vitro. Materials and methods: The antiproliferative activity of koenimbin was examined using MTT, and the apoptotic detection was carried out by acridine orange/propidium iodide (AO/PI) double-staining and multiparametric high-content screening (HCS) assays...
2018: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/29764935/the-disorderly-conduct-of-hsc70-and-its-interaction-with-the-alzheimer-s-related-tau-protein
#19
Isabelle R Taylor, Atta Ahmad, Taia Wu, Bryce A Nordhues, Anup Bhullar, Jason E Gestwicki, Erik R P Zuiderweg
Hsp70 chaperones bind to various protein substrates for folding, trafficking, and degradation. Considerable structural information is available about how prokaryotic Hsp70 (DnaK) binds substrates, but less is known about mammalian Hsp70s, of which there are 13 isoforms encoded in the human genome. Here, we report the interaction between the human Hsp70 isoform heat shock cognate 71 KDa protein (Hsc70 or HSPA8) and peptides derived from the microtubule-associated protein tau, which is linked to Alzheimer's disease...
May 15, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29764864/targeting-the-hsp40-hsp70-chaperone-axis-as-a-novel-strategy-to-treat-castration-resistant-prostate-cancer
#20
Michael A Moses, Yeong Sang Kim, Genesis M Rivera-Marquez, Nobu Oshima, Matthew J Watson, Kristin Beebe, Catherine Wells, Sunmin Lee, Abbey D Zuehlke, Hao Shao, William E Bingman, Vineet Kumar, Sanjay Malhotra, Nancy L Weigel, Jason E Gestwicki, Jane Trepel, Leonard M Neckers
Castration-resistant prostate cancer (CRPC) is characterized by reactivation of androgen receptor (AR) signaling in part by elevated expression of AR splice variants (ARv) including ARv7, a constitutively active, ligand binding domain (LBD)-deficient variant whose expression has been correlated with therapeutic resistance and poor prognosis. In a screen to identify small molecule dual inhibitors of both androgen-dependent and androgen-independent AR gene signatures, we identified the chalcone C86. Binding studies using purified proteins and CRPC cell lysates revealed C86 to interact with heat shock protein 40 (Hsp40)...
May 15, 2018: Cancer Research
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