Sohn, Sea Hwan;Cho, Eun Jung;Park, Dhan Bee;Jang, In Surk;Moon, Yang Soo
Korean Journal of Poultry Science
/
v.41
no.2
/
pp.115-125
/
2014
With Single Comb White Leghorn (WL) and Korean Native Chicken (KNC) breeds, we compared the stress response with chicken breeds that were subjected to a high stocking density. Stress response was analyzed by the quantity of telomeric DNA, the rate of DNA damage and the expression levels of heat shock proteins (HSPs) and hydroxyl-3-methyl-glutaryl coenzyme A reductase (HMGCR) genes on tissues and blood. The telomere length and telomere shortening rates were analyzed by quantitative fluorescence in situ hybridization on the nuclei of lymphocytes and tissues. The DNA damage rate of lymphocytes was quantified by the comet assay. The expression levels of HSP70, HSP90-${\alpha}$, HSP90-${\beta}$ and HMGCR genes were measured by quantitative real-time polymerase chain reaction in lymphocytes. There was no significant difference between KNC and WL in body weight, weight gain, telomere shortening rate and DNA damage rate. However, the growth rate significantly decreased in chickens raised under high stocking density conditions, as compared to the control group. The telomere-shortening rate, DNA damage and HSPs expression of the lymphocytes were significantly higher in the high stocking density group than the control. The stress condition and breeds had a significant effect on the expressions of HSP70, HSP90-${\alpha}$ and HSP90-${\beta}$ in lymphocytes, except HMGCR. The stress response of WL was higher than that of KNC, as analyzed to the expression of HSP70 and HSP90-${\alpha}$. Therefore, we concluded that the chickens which were exposed to a high stocking density had increased the individual physiological stress response regardless of breeds, and White Leghorns are more susceptible to stress condition than Korean Native Chickens.
Background : Anti-apoptotic proteins may be involved in tumor development, progression and the response to treatment, Bcl-2 is by far the most studied anti-apoptotic protein. A novel inhibitor of apoptosis, designated survivin, and the heat shock proteins (HSPs) have recently been found in many human cancers. Immunohistochemical methods were used to determine the expression level of survivin, HSP70 and bcl-2 in non-small cell lung cancer (NSCLC) to evaluate their clinical significance. Materials and Methods : Tissue array slides were obtained from 99 surgically resected NSCLCs. Immunohistochemical staining was performed by an immuno-peroxidase technique using an avidin-biotinylated horseradish peroxidase complex. Anti-survivin rabbit polyclonal antibodies, anti-HSP70 mouse monoclonal antibodies and anti-bcl-2 mouse monoclonal antibodies were used as the primary antibodies. Results : Positive staining of survivin was detected in 33.3% of the cases. Survivin positivity is associated with to females and recurrence. A nonstatistically significant trend toward increased survivin expression was observed in non-smokers, and its expression inversely correlated with the number of cigarettes smoked in smokers. HSP70 was detected in 84.8% but this did not correlated with the clinicopathologic characteristics. Bcl-2 was detected in 18.2% and its expression correlated to tumor recurrence. No significant difference in the median survival time was noted in a comparison of all cases with survivin expression and those without. There was no association between HSP70 or bcl-2 expression and survival. Conclusion : Survivin expression was significantly associated with females and tumor recurrence. In addition its expression was inversely associated with the number of cigarettes smoked. However, HSP70 and bcl-2 expression were not associated with the clinical parameters or survival. This suggests that measuring the survivin levels may be useful in identifying patients at high risk for disease recurrence. Therefore, survivin might be a new diagnostic/therapeutic target in cancer.
Kim Tae-Hyung;Kim Kyung-Ju;Choe Mi-Kyung;Yeo In-Kyu
Journal of Aquaculture
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v.19
no.2
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pp.77-83
/
2006
This study was conducted to investigate changes of hemolymph count, antioxidant enzyme activities (catalase: CAT and superoxide dismutase: SOD) and Heat Shock Protein 70 (HSP70) mRNA in hemolymph, hepatopancreas and gill of abalone (Haliotis sieboldii) exposed to various water temperatures. Abalones were exposed to 10, 15, 20, 25 or $30^{\circ}C$ for 0, 6, 12, 24 or 48 hours. Survival rate of abalone was 100% at 10, 15, 20 and $25^{\circ}C$, but 0% at $30^{\circ}C$. Hemolymph counts increased at lower water temperatures (10 and $15^{\circ}C$) and decreased at $30^{\circ}C$. SOD activity decreased immediately after exposure to lower or higher water temperatures compared to the control ($20^{\circ}C$) with an exception at $30^{\circ}C$ where the activity increased. At lower temperatures, SOD activity rose high after 24 hours, but decreased again at 48 hours. At $25^{\circ}C$, it decreased compared to the control. CAT activity decreased immediately after exposure to 10 or $25^{\circ}C$ compared to the control, and then was recovered to the initial level after increment. At $15^{\circ}C$, CAT activity was high after 6 hours, and then was recovered to the initial level after increment. At $30^{\circ}C$, the activity decreased throughout the experiment. The HSP70 mRNA expression in gill increased at lower temperatures compared to the control ($20^{\circ}C$) and $25^{\circ}C$. In this study, rapid change of wale, temperature caused stress response in abalone which had been raised at $20^{\circ}C$. At molecular level, HSP70 was expressed rapidly, but antioxidant enzymes like SOD and CAT were expressed later than HSP70. At 15 and $25^{\circ}C$ of water temperatures, the HSP70, SOD and CAT expression were stable with time. However, at $30^{\circ}C$, all abalone died possibly because they could not develop resistance to high temperature.
Park, Ji Ae;Cho, Eun Jung;Choi, Eun Sik;Hong, Yeong Ho;Choi, Yeon Ho;Sohn, Sea Hwan
Korean Journal of Poultry Science
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v.43
no.3
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pp.177-189
/
2016
This study was conducted to verify the relationships between the expression values of stress-related markers and their production performances in 25 strains of Korean domestic chicken breeds. For stress response markers, the amount of telomeric DNA; expression levels of heat shock protein (HSP)-70, $HSP-90{\alpha}$, and $HSP-90{\beta}$; and comet scores were analyzed. Production performances were measured by the survival rate, body weights, days at first egg laying, egg weight and hen housed egg production. The results showed that the production traits and values of stress-related markers showed significant differences between strains. In general, the stress response of pure bred chickens with heavy weights was relatively high, while that of hybrid chickens with light weights was relatively low. The correlation coefficients between telomere contents and body weights showed that there were weak negative relationships. However, the correlations of telomere content with the survival rate and egg production were weakly positive after 20 weeks old. The expression levels of HSP genes and DNA damage rate (comet scores) were positively correlated to body weight, but were negatively correlated to the survival rate and egg production. The results implied that increasing body weight was associated with increasing HSPs expression and the DNA damage rate was associated with decreasing telomere content. In addition, increasing HSPs expression and the DNA damage rate decreased the survival rate and egg production, but the relationships with the telomere content was the reverse. Correlations among the stress-related markers showed that there were significant correlation coefficients between all of the marker values. HSPs expression was negatively correlated to the telomere content, while it was positively correlated to the DNA damage rate. There was a highly negative correlation between the telomere content and DNA damage rate. In conclusion, increasing the HSP values and DNA damage rate can promote telomere reduction, which led to a decrease in disease resistance and robustness of the chicken. Thus, increasing the stress response was verified to adversely affect the laying performance and viability of chickens.
Mutations in the APP gene lead to enhanced cleavage by ${\beta}-$ and ${\gamma}-secretase$, and increased $A{\beta}$ formation, which are closely associated with Alzheimer's disease (AD)-like neuropathological changes. Recent studies have shown that exercise training can ameliorate pathogenic phenotypes ($A{\beta}-42$, BDNF, GLUT-1 and HSP70) in experimental models of Alzheimer's disease. Here, we have used NSE/APPsw transgenic mice to investigate directly whether exercise training ameliorates pathogenic phenotypes within Alzheimer's brains. Sixteen weeks of exercise training resulted in a reduction of $A{\beta}-42$ peptides and also facilitated improvement of cognitive function. Furthermore, GLUT -1 and BDNF proteins produced by exercise training may protect brain neurons by inducing the concomitant expression of genes that encode proteins (HSP-70) which suppress stress induced neuron cell damages from APPsw transgenic mice. Thus, the improved cognitive function by exercise training may be mechanistically linked to a reduction of $A{\beta}-42$ peptides, possibly via activation of BDNF, GLUT-1, and HSP-70 proteins. On the basis of the evidences presented in this study, exercise training may represent a practical therapeutic management strategy for human subjects suffering from Alzheimer's disease.
Jin H. J.;Kim I. C.;Wee M. S.;Yeon S. H.;Kim C. D.;Cho C. Y.;Choi S. H.;Cho S. R.;Son D. S.;Kim Y. K.;Jung J. H.;Choi H. S.;Park C. K.
Journal of Embryo Transfer
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v.20
no.3
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pp.289-295
/
2005
This study was performed to investigate the relationship between Heat shock protein 70 (HSP70) gene polymorphism and in vitro fertilization(IVF) embryo development in the pigs. The single strand conformation polymorphism(SSCP) genotypes from HSP70 K1, K3 and K4 PCR products were detected different patterns. In cleavage rate of oocyte fertilized in vitro, HSP70 K1-AA genotype($73.1\%$) and K1-AB genotype($62.3\%$) showed significantly higher oocyte cleavage rate than HSP70 K1-BB genotype($49.3\%$)(p<0.05). And HSP70 K3-AA genotype ($72.4\%$) and K3-AB($62.2\%$) also showed significantly higher oocyte cleavage rate than HSP70 K3-BB genotype($49.1\%$)(p<0.05). The IVF embryo development of 2-cell stage according to HSP70 genotypes of sperm and pig breeds also showed a significant difference. The number of embryos developed to 2-cell stage in Landrace(28.8) and Duroc(29.8) were significantly higher than in Yorkshire(10.9)(p<0.05). And also HSP70 K4-AB genotype group(29.6) higher than HSP70 K4-AA genotype group(10.6)(p<0.05). However, the number of embryos developed to blastocyst stage did not showed significant differences among breeds as well as HSP70 genotypes. These resrults suggest that in vitro development in porcine early embryos may be affected by HSP70 genotypes and breeds.
Effects of stress on the low salinity stress were examined in the pacific abalone Haliotis discus discus. Changes in survival rate, hemolymph count, antioxidant enzyme activities (catalase: CAT and superoxide dismutase: SOD), respiratory burst activity, phenoloxidase activity, lysozyme activity and expression of heat shock protein 70 (HSP70) mRNA were measured 0, 3, 6, 12, 24 or 48hours after low salinity treatment with 25, 30, 33 and 35 psu. Survival rates of pacific abalone were 100% at 33 and 35 psu, but 93 and 97% at 25 and 30 psu for 48 hours, respectively. Hemolymph counts decreased in the time elapsed-dependent way at all of the experimental groups. At low salinity, 25 and 30 psu, SOD and CAT activity increased compared to the experimental group of 33 psu. Moreover, respiratory burst activities of the pacific abalone seemed to have no effect on low salinity stress at any experimental group. However, phenoloxidase activity is an important component of the defence against pathogen that was decreased in a reduction of salinity dependent way. Lysozyme activity also immediately reduced at 25 psu experimental group for 48 h. The HSP70 mRNA was weakly expressed at 33 psu, but strongly detectable at 25 psu experimental group. The HSP 70 mRNA expression in gill increased in the time elapsed-dependent way at 25 psu experimental group and then recovered at 48 h. These results suggest that low salinity stress give rise to inhibitory action of immune system as a result of the decrease of phenoloxidase and lysozyme activity in the pacific abalone, especially.
The flowering locus T (FT) gene, of which expression will be controlled at high temperature by heat shock promoter (it printed as to HSproFT), was introduced into spray-type chrysanthemum (Dendranthema grandiflorum (Ramat.) Kitamura) 2 cultivars ('Pink PangPang' and 'Pink Pride' by co-cultivation with Agrobacterium tumefaciens strain C58C1 harboring pCAMBIA2300 containing the HSproFT gene. After leaf segments of the 2 cultivars were infected with the A. tumafaciens with C58C1 as explants, shoots were regenerated from the explants cultured on the $1^{st}$ selection medium (MS basal salts + 1.0 mg/L BA, 0.5 mg/L IAA + 10 mg/L kanamycin + 0.7% plant agar, pH 5.8). The shoots were transferred into the $2^{nd}$ selection medium (MS basal salts + 1.0 mg/L BA, 0.5 mg/L IAA + 20 mg/L kanamycin + 0.7% plant agar, pH 5.8). One hundred seventeen plantlets from 'Pink PangPang' and 5 ones from 'Pink Pride' were confirmed as transformants by PCR analysis. Twenty six of the transformants and non-transformants were acclimatized and established well in a green house. Eights of 26 transgenic lines showed flower bud 1.7~10 days earlier than nontransgenic plants, and 24 of them flowered 1~6 days earlier than non- transgenic plants. The shape and color of flower of all HSproFT-transgenic lines were not different with those of non- transgenic plants.
Park, Yu Kyung;Lee, Chang-Eun;Lee, Hyoungseok;Koh, Hye Yeon;Kim, Sojin;Lee, Sung Gu;Kim, Jung Eun;Yim, Joung Han;Hong, Ju-Mi;Kim, Ryeo-Ok;Han, Se Jong;Kim, Il-Chan
Journal of Life Science
/
v.30
no.11
/
pp.931-938
/
2020
Translationally controlled tumor protein (TCTP) is one of the most abundant proteins in various eukaryotic organisms. TCTPs play important roles in cell physiological processes in cancer, cell proliferation, gene regulation, and heat shock response. TCTP is also considered an important factor in the resistance to oxidative stress induced by dithiothreitol or hydrogen peroxide (H2O2). Arctic calanoid copepods have a variety of antioxidant defense systems to regulate the levels of potentially harmful reactive oxygen species generated by ultraviolet radiation in the Arctic marine ecosystem. However, information on the antioxidant activity of TCTP in the Arctic Calanus glacialis is still scarce. To understand the putative antioxidant function of the Arctic copepod C. glacialis TCTP (Cg-TCTP), its gene was cloned and sequenced. The Cg-TCTP comprised 522 bp and encoded a 174-amino acid putative protein with a calculated molecular weight of ~23 kDa. The recombinant Cg-TCTP (Cg-r TCTP) gene was overexpressed in Escherichia coli (BL21), and Cg-rTCTP-transformed cells were grown in the presence or absence of H2O2. Cg-rTCTP-transformed E. coli showed increased tolerance to high H2O2 concentrations. Therefore, TCTP may be an important antioxidant protein related to tolerance of the Arctic copepod C. glacialis to oxidative stress in the harsh environment of the Arctic Ocean.
Background: T cell mediated immunity is important in the defense mechanism of tuberculosis. Since ${\gamma}{\delta}$ T cell receptor was found to react with 65 kD heat shock protein of M.tuberculosis, there have been some reports on the role of ${\gamma}{\delta}$ T cells in the defense against M.tuberculosis. But until now, the role of the ${\gamma}{\delta}$ T cells in tuberculosis is not clear. Methods: We therefore measured the percentage of ${\gamma}{\delta}$ T cells of peripheral blood by flowcytometry before and after stimulation with Con-A, PPD and H37Ra lysate and compared between tuberculosis patients and healthy controls. Results: ${\gamma}{\delta}$ T cells of pheripheral blood in pulmonary tuberculosis patients was $7.5{\pm}5.2%$, showing no difference compared with healthy control($10.0{\pm}4.8%$). But IL-2R(+) ${\gamma}{\delta}$ T cells were higher in tuberculosis compared with healthy control($4.8{\pm}5.1%$ vs. $1.8{\pm}2.8%$). After stimulation with PPD or Con-A, the percentage of ${\gamma}{\delta}$ T cells showed no significant change, but IL-2R(+) ${\gamma}{\delta}$ T cells increased significantly in both tuberculosis($17.9{\pm}13.4%,\;57.6{\pm}20.2%$ respectively) and healthy control group($11.5{\pm}9.1%,\;80.8{\pm}9.3%$). After stimulation with H37Ra lysate, percentage of ${\gamma}{\delta}$ T cells showed increasing tendency in healthy control group, but it was not statistically significant. Conclusion: In this study, we could not demonstrate the role of ${\gamma}{\delta}$ T cells in the peripheral blood of pulmonary tuberculosis. It is suggested that further studies will be needed in the regional sites of M.tuberculosis infection.
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