Allergic contact dermatitis (ACD) is an inflammatory skin disease and regarded as a prototype of T-cell mediated delayed-type hypersensitivity reactions. Poly-${\gamma}$-glutamic acid (PGA) is a biodegradable polymer that is produced by Bacillus subtilis. This study was performed to assess the effects of PGA in a canine model of ACD. ACD was induced on the back of dogs induced by sensitization and repeated application by 2,4-dinitro-1-chlorobenzene (DNCB). Topical treatment of PGA was applied once a day for 12 days and skin biophysical parameters including transepidermal water loss (TEWL), skin hydration, skin pH, skin thickness and erythema index, were measured every two days during experimental periods. Histopathology and immunohistochemistry were performed to evaluate the antiinflammatory effect. In skin biophysical parameters, TEWL, skin hydration, skin thickness and erythema index were significantly increased, with a maximum increase appeared on day 2 (p < 0.05). On the other hand, skin pH was significantly decreased, with a maximum decrease appeared on day 2 (p < 0.01). After the completion of PGA treatment, skin biophysical parameters were significantly reached those of baseline in a time-dependent manner (p < 0.05). In histopathology, marked increases of epidermal thicknesses were induced after DNCB challenge with numerous inflammatory cell infiltrations and edematous changes, decreases of connective tissue occupied regions in dermis. In addition, marked increases of cytokine - tumor necrosis factor-${\alpha}$ (TNF-${\alpha}$) and interferon-${\gamma}$ (IFN-${\gamma}$)-immunoreactivities in the dermis and of apoptotic markers - caspase-3 and PARP-immunoreactivities in the epidermis were observed in DNCB-PBS control as compared with intact control, respectively (p < 0.01). It means, the ACD and related apoptotic changes were induced by DNCB in the present study. However, these ACD induced by DNCB and related apoptosis in epidermis were significantly inhibited by treatment of PGA treated skin, the decreases of infiltrated inflammatory cells and related decreases of pro-inflammatory cytokine immunoreactivities were also observed (p < 0.01). Based on these findings, PGA may have anti-inflammatory and alleviatory effects in the allergic contact dermatitis.
Tak, Hyun-Min;Kim, Gyu-Tae;Kim, Eun-Jin;Mun, Yun-Ja;Choe, Chang-Yong;Son, Dong-Soo;Han, Jae-Hee;Kang, Da-Won
Journal of Embryo Transfer
/
v.24
no.1
/
pp.57-64
/
2009
This study was carried out to investigate expression of apoptosis-related differentially expressed gene (DEG) in ovaries of Korean cattle with follicular and luteal cysts and to identify the relationship between cyst and apoptosis using microarray, real-time PCR, TUNEL staining, and Western blot analysis. Microarray data showed that PIK3R2 and AKT1 were significantly up-regulated in follicular cyst, and TNF-RAF2, PRLR, FOXL2, STK4, and COL4A3 were up-regulated whereas INHA, CIDEB, BCL10, and FASLG were down-regulated in luteal cyst. Real-time PCR was performed to validate DEGs altered in luteal cyst. Of nine DEGs, four DEGs down-regulated in luteal cyst showed a positive corelation between microarray data and real-time PCR data. In this study, we focused on INHA, among many DEGs, which was highly down-regulated in both follicular and luteal cysts. Real-time PCR and micro array data showed that INHA was down-regulated by 12.3-fold and by 1.4-fold, respectively, in the bovine follicular cyst. TUNEL assay and Western blot analysis for ERK, JNK, p38, PI3K, and Akt, which were used to detect whether apoptosis is occurred, showed no significant changes in cystic ovaries (p>0.05). In the expression and activity of caspase-3, Bax, Bel-2, and Bel-xL, there was no significant changes between follicular cystic ovary and normal ovary. Rather, the expression levels of PI3K and p-Akt were decreased in follicular cystic ovary. These results suggest that deficiency of apoptosis in cystic ovary is associated with decreased expression of apoptotic effectors.
The anti-cancer activities of Rhus verniciflua Stokes (GC), Ulmus davidiana var. japonica Nakai (UGP) and arsenium sublimatum (SS) extracts, which have been used Oriental medicine therapy for various diseases, were investigated. The treatment of GC, UGP and SS alone, and combined treatment with GC, UGP and SS did not affect the cell viability in the mouse normal cell lines (RAW 264.7 macrophages and C2C12 myoblasts). However, co-treatment with GC, UGP and SS markedly induces apoptosis in human gastric cancer AGS cells, but not in other various cancer cell lines (human lung cancer A549, colon cancer HCT116, liver cancer Hep3B and bladder T24 cells) as evidenced by formation of apoptotic bodies, chromatin condensation, and accumulation of annexin-V positive cells. Co-treatment with GC, UGP and SS effectively induced the expression levels of Fas and Fas ligand, and inhibited the levels IAP family proteins such as XIAP, cIAP-1 and survivin, and anti-apoptotic Bcl-xL proteins compared with treatment with either agent alone. Combined treatment also significantly induced the loss of mitochondrial membrane potential, which was associated with the activation of caspases (-3, -8, and -9) and degradation of poly (ADP-ribose) polymerase. However, the cytotoxic effects induced by co-treatment with GC, UGP and SS were significantly attenuated by pan-caspases inhibitor, z-VAD-fmk, indicating an important role for caspases. These results indicated that the caspases were key regulators of apoptosis in response to co-treatment of GC, UGP and SS in human gastric cancer AGS cells and further studies will be needed to identify the active compounds.
Extracts of soybeans fermented by Bacillus subtilis have a wide variety of functions, such as enhancing the body's immune function, fibrinolysis activity, anti-inflammation, anti-cancer, estrogen function and anti-infection effects. Recently, it was reported that the extracts of fermented beans exhibit strong anti-inflammatory and anti-cancer properties by suppressing the transcription of pro-inflammatory cytokine genes and induction of apoptosis, respectively. However, the mechanisms of their cytotoxicity in human gastric cancer cells are poorly understood. In the present study, we investigated the effects of ethyl alcohol extracts from fermented soybean (FS) and yellow agabean (FYA) on cell growth and apoptosis in AGS human gastric cancer cells. A treatment of FS and FYA inhibited the growth of AGS cells in a concentration-dependent manner by inducing apoptosis. FS- and FYA-induced apoptosis were associated with down-regulation of XIAP and cIAP-2, and up-regulation of pro-apoptotic Bax expression. Moreover, a treatment of FS and FYA not only triggered an increase in the levels of death receptor (DR)4, DR5, Fas and FasL, but also induced the activation of casepase-3, -8 and -9. These findings illustrate that FS and FYA may have a therapeutic potential in human gastric AGS cells and as a functional food.
Granulocyte colony-stimulating factor (G-CSF) is used for heart failure therapy and promotes myocardial regeneration by inducing mobilization of bone marrow stem cells to the injured heart after myocardial infarction; however, this treatment has one weakness in that its biological effect is transient. In our previous report, we generated 5 mutants harboring N-linked glycosylation to improve its antiapoptotic activities. Among them, one mutant (Phe140Asn) had higher cell viability than wild-type hG-CSF in rat cardiomyocytes, even after treatment with an apoptotic agent ($H_2O_2$). Cells treated with this mutant significantly upregulated the antiapoptotic proteins, and experienced reductions in caspase 3 activity and PARP cleavage. Moreover, the total number of apoptotic cells was dramatically lower in cultures treated with mutant hG-CSF. Taken together, these results suggest that the addition of an N-linked glycosylation was successful in improving the antiapoptotic activity of hG-CSF, and that this mutated product will be a feasible therapy for patients who have experienced heart failure.
Lee Dong-Ju;Kim Myung-Dong;Kim Young-Sam;Yoo Yeong-Min;Lee Seon-Goo
Journal of Physiology & Pathology in Korean Medicine
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v.19
no.5
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pp.1281-1291
/
2005
Chungpae-tang is suggested to have the antitumor activity on lung cancer. This study was peformed to investigate apoptotic effect in vitro and antitumor effect and immune response after injection of B16-F10 melanoma cells and Chungpae-tang into a tail vein of C57BL/6 mice and administratition of Chungpae-tang in A549 human lung cancer cell line in vivo, respectively. Experimental studies were obtained by measuring the median survival time and cytokine expression through RT-PCR, and ELISA assay. The results were summarized as follows: 5 mg/ml of Chungpae-tang causing DNA fragmentation, caspase-3 enzyme activation, PARP fragmentation, and cytochrome c release, suggested that Chungpae-tang has in vitro apoptotic effect in A549 human lung cancer cell line in the apoptosis-induced experiment. The median survival time of the Chungpae-tang treated group was 21 days and that of control group was 22 days, suggesting that the median survival time between the Chungpae-tang treated group and the control group was not significant. Cytokine expression between the Chungpae-fang treated group and the control group was noticeable, but was not significant in the RT-PCR. In the ELISA assay, IL-2 productivity in the Chungpae-tang treated group was to increase more than that in the normal group (p<0.05) and was no significant between the Chungpae-tang treated group and the control group. $INF-\gamma$ productivity of the control group decreased more than that of the normal group (p<0.05) and that of the Chungpae-tang-treated group increased more than that of the control group (p<0.05). IL-12 productivity of the control group increased more than that of the normal group (p<0.05) and that of the Chungpae-tang-treated group decreased more than that of the control group (p<0.05) and the normal group. IL-4 productivity of the Chungpae-tang-treated group increased more than that of the normal group and the control group (p<0.05). IL-10 productivity of the Chungpae-tang-treated group increased more than that of the normal group and the control group (p<0.05). Accordingly the results show Chungpae-tang could induce apoptosis in A549 human lung cancer cell line and bring to antitumor effect and immune response against injection of B16-F10 melanoma cells into a tail vein of C57BL/6 mice but it needs more research on the precise mechanism of such effects.
The purpose of this study was to investigate the effects of resveratrol supplementation on inflammasome, inflammation, and macrophage markers in subcutaneous adipose tissue of high-fat-diet-induced obese mice. C57BL/6 mice were randomly assigned to three groups: normal diet control (NC; n=10), high-fat diet control (HC; n=10), or high fat with resveratrol (HRE; n=10) group. The mice were fed a high-fat diet (60% of calories from fat) or normal diet (18% of calories from fat). Resveratrol dissolved in a 0.1ml solution of dimethyl sulfoxide was supplemented orally at 25 mg/kg body weight. After 15 weeks, the body weight was significantly higher in the high-fat diet group than in the normal diet group. The inflammasome markers NLRP3, ASC, and caspase1 were significantly lower in the HRE group than in the HC group. The levels of an inflammation marker, IL-18, were also significantly lower in the HRE group than in the NC and HC groups. The levels of macrophage markers F480 and CD86 were significantly lower in the HRE group than in the HC group. The levels of the M2 macrophage marker CD206 were significantly decreased in the HC and HRE groups. Resveratrol had a positive effect on ameliorating the complications of high fat diet-induced obesity by reducing inflammasome and M1 macrophage gene expressions. However, resveratrol supplementation did not reduce inflammation gene expression.
Kim, Min Jeong;Lee, Hye Hyeon;Seo, Min Jeong;Kang, Byoung Won;Park, Jeong Uck;Kim, Kyoung-Sook;Kim, Gi-Young;Joo, Woo Hong;Choi, Yung Hyun;Cho, Young-Su;Jeong, Yong Kee
Journal of Microbiology and Biotechnology
/
v.22
no.12
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pp.1665-1672
/
2012
An 80% ethanol extract of Hizikia fusiforme was obtained and followed by successive fractionation using the organic solvents n-hexane, ethyl acetate, and n-butanol to identify the antioxidative substance. The aqueous part of the nbutanol fractionation step, showing high antioxidative activity, was subjected to reverse-phase liquid chromatography. As a result, a substance purified from a BB-2 fraction showed high antioxidative activity. The m/z 419 [M+H] molecular ion peak in the fraction was observed by the analysis of the ESI-LC/MS spectrum. By the analysis of 1H NMR (500 MHz, DMSO-$d_6$) and $^{13}C$ NMR (125 MHz, DMSO-$d_6$) spectra, a unique compound of the fraction was biochemically identified as a 5-hydroxy-3,6,7,8,3',4'-hexamethoxyflavone (5HHMF). We also investigated the effect of 5HHMF on human gastric AGS carcinoma cells. Western blot analysis suggested that the flavone substantially increased the levels of the death receptor-associated apoptosis mediators Fas, Fas L, FADD, TRADD, and DR4 in a concentration-dependent manner. The levels of Fas, Fas L, TRADD, and DR4 in the cells treated with 5HHMF ($5{\mu}g/ml$) were approximately 26.4-, 12.8-, 6.7-, and 9.8-times higher than those of non-treated cells, respectively. Of note, the level of FADD protein in the cells exposed to 5HHMF ($1{\mu}g/ml$) increased approximately 9.6-times. In addition, the cleavage of caspase-3, -8, and -9 in cultured AGS cells treated with 5HHMF was significantly confirmed. Therefore, our results suggest that 5HHMF from H. fusiforme is involved in the induction of death receptor-associated apoptosis mediators in human gastric AGS carcinoma cells.
The aim of this study was to investigate the impact of a reported p53 inhibitor, pifithrin-${\alpha}$ (PFT-${\alpha}$), on preimplantation porcine in vitro fertilized (IVF) embryo development in culture. Treatment of PFT-${\alpha}$ was administered at both early (0 to 48 hpi), and later stages (48 to 168 hpi) of preimplantation development, and its impact upon the expression of five genes related to apoptosis (p53, bak, bcl-xL, p66Shc and caspase3), was assessed in resulting d 7 blastocysts, using real-time quantitative PCR. Total cell numbers, along with the number of apoptotic nuclei, as detected by the in situ cell death detection assay, were also calculated on d 7 in treated and non-treated control embryos. The results indicate that PFT-${\alpha}$, when administered at both early and later stages of porcine IVF embryo development, increases the incidence of apoptosis in resulting blastocysts. When administered at early cleavage stages, PFT-${\alpha}$ treatment was shown to reduce the developmental competence of porcine IVF embryos, as well as reducing the quality of resulting blastocysts in terms of overall cell numbers. In contrast, at later stages, PFT-${\alpha}$ administration resulted in marginally increased blastocyst development rates amongst treated embryos, but did not affect cell numbers. However, PFT-${\alpha}$ treatment induced apoptosis and apoptotic related gene expression, in all treated embryos, irrespective of the timing of treatment. Our results indicate that PFT-${\alpha}$ may severely compromise the developmental potential of porcine IVF embryos, and is a potent apoptotic agent when placed into porcine embryo culture media. Thus, caution should be exercised when using PFT-${\alpha}$ as a specific inhibitor of p53 mediated apoptosis, in the context of porcine IVF embryo culture systems.
Kim, Dae Won;Lee, Sung Ho;Ku, Sae Kwang;Lee, Ji Eun;Cha, Hyun Ju;Youn, Jong Kyu;Kwon, Hyeok Yil;Park, Jong Hoon;Park, Eun Young;Cho, Sung-Woo;Han, Kyu Hyung;Park, Jinseu;Eum, Won Sik;Choi, Soo Young
BMB Reports
/
v.48
no.3
/
pp.153-158
/
2015
As FK506 binding proteins (FK506BPs) are known to play an important role in the regulation of a variety of biological processes related to cell survival, this study was designed to examined the protective effects of FK506 binding protein 12 (FK506BP) on low humidity air flow induced dry eye in a rat model using transduced PEP-1-FK506BP. After the topical application of PEP-1-FK506BP, tear volumes were markedly increased and significant prevention of cornea damage was observed compared with dry eye rats. Further, immunohistochemical analysis demonstrated that PEP-1-FK506BP markedly prevented damage to the cornea, the bulbar conjunctiva, and the palpebral conjunctiva epithelial lining compared with dry eye rats. In addition, caspase-3 and PARP expression levels were found to be decreased. These results demonstrated that topical application of PEP-1-FK506BP significantly ameliorates dry eye injury in an animal model. Thus, we suggest that PEP-1-FK506BP can be developed as a new ophthalmic drop to treat dry eye diseases.
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