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Shin JH, Han JA. Influence of Casting Variables on Release Kinetics of Orally Disintegrating Film. Foods 2024; 13:1418. [PMID: 38731789 PMCID: PMC11083982 DOI: 10.3390/foods13091418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Revised: 04/28/2024] [Accepted: 05/02/2024] [Indexed: 05/13/2024] Open
Abstract
As a new form for supplying vitamin C, orally disintegrating films (ODFs) were developed C based on hyaluronic acid (HA) under varying casting conditions and the properties were analyzed. The films with different thicknesses (2, 3, and 8 mm, for CT2, CT4, and CT8, respectively) were produced by adjustments made to casting height. Two types of 8 mm thick ODFs produced by single or double casting (4 + 4 mm for CTD4+4) methods were also compared. As film thickness increased, water vapor permeability and tensile strength also increased. Even at equal thickness, manufacturing with double casting exhibited a stronger texture and reduced disintegration compared to single casting. All ODFs met the World Health Organization's recommended daily vitamin C intake (45 mg/day) with a single sheet. Films showed over 80% dissolution in various solvents, adhering to the Hixson-Crowell cube root law, indicating vitamin C release occurred via porous penetration of the eluate. For CT2, CT4, and CTD4+4, vitamin C release was primarily governed by diffusion within the gel matrix and HA erosion. However, for CT8, HA erosion-induced release somewhat dominated. Based on the sensory test, it seems desirable to adjust the thickness of the film to 2 or 4 mm, because a thickness greater than that increased the foreign body sensation due to prolonged residence in the oral cavity.
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Affiliation(s)
- Jang-Ho Shin
- Department of Food Service Management and Nutrition, Sangmyung University, Seoul 03016, Republic of Korea;
| | - Jung-Ah Han
- Department of Food and Nutrition, Sangmyung University, Seoul 03016, Republic of Korea
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Kweon DK, Han JA. Development of hyaluronic acid-based edible film for alleviating dry mouth. Food Science and Human Wellness 2023. [DOI: 10.1016/j.fshw.2022.07.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Han JA. The effect of different pretreatments followed by enzyme reaction on preparing shape-retaining softened burdock. Food Chem 2021; 353:129440. [PMID: 33714124 DOI: 10.1016/j.foodchem.2021.129440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 02/15/2021] [Accepted: 02/20/2021] [Indexed: 11/26/2022]
Abstract
To prepare texture-softened burdock that maintains its original shape, the effect of three different pretreatments before pectinase reaction (ENZ) up to 3 h: heating and drying (HD), freeze-thawing after heating and then drying (HFTD), or freeze-drying after heating (HFD) was compared. The hardness of raw burdock could be decreased by 15% after ENZ up to 3 h. The order of hardness by pretreatment was HFD (-93.3%) < HFTD (-80.7%) < HD (-52.8%) < R (raw), implying that the burdock could be softened by pretreatment itself. By the combination of pretreatment and ENZ, HFTD-ENZ for 3 h or HFD-ENZ over 2 h produced excellent softening. Hardness less than 2.0 × 104 (N/m2) was obtained by HFD followed by ENZ over 2 h, and this could possibly be ingested by the tongue without chewing. More chlorogenic acid was also detected with those samples.
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Affiliation(s)
- Jung-Ah Han
- Department of Food and Nutrition, Sangmyung University, Seoul 03016, Republic of Korea.
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Kim HJ, Han JA, Lim ST, Cho DH. Effects of germination and roasting on physicochemical and sensory characteristics of brown rice for tea infusion. Food Chem 2021; 350:129240. [PMID: 33618097 DOI: 10.1016/j.foodchem.2021.129240] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 01/26/2021] [Accepted: 01/27/2021] [Indexed: 11/18/2022]
Abstract
Germinated brown rice was roasted for the preparation of tea. The germination induced substantial increases in reducing sugars (from 3224.06 to 5028.80 mg/100 g), free amino acids (from 62.51 to 165.07 mg/100 g), volatile compounds, and phenolics (10.06 to 14.27 mg GAE/100 g). Roasting decreased the residual contents of free amino acids and reducing sugars, but produced the volatiles and phenolics. Browning index was slightly decreased by the germination (from 22.69 to 20.13), but significantly increased by the subsequent roasting. The germinated BR (GBR) was more susceptible to roasting than native BR. Acrylamide content in the roasted GBR was significantly lower than that in the roasted BR, because of the lower asparagine content in GBR. Sensory evaluation revealed that a mild roasting for 5 min at 230 °C after germination for 2 days was appropriate to produce a brown rice tea.
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Affiliation(s)
- Hyun-Jin Kim
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, South Korea; Food Research Institute, Dongsuh Companies Inc., Siheung 15090, South Korea
| | - Jung-Ah Han
- Department of Food and Nutrition, Sangmyung University, Seoul 03016, South Korea
| | - Seung-Taik Lim
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, South Korea.
| | - Dong-Hwa Cho
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, South Korea.
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Jeong D, Han JA, Liu Q, Chung HJ. Effect of processing, storage, and modification on in vitro starch digestion characteristics of food legumes: A review. Food Hydrocoll 2019. [DOI: 10.1016/j.foodhyd.2018.12.039] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Lee JS, Cho SM, Kim BK, Han JA. Development of a cooked rice model for bibimbap and resulting physico-digestive properties. Food Sci Biotechnol 2016; 25:489-495. [PMID: 30263296 DOI: 10.1007/s10068-016-0068-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Revised: 12/16/2015] [Accepted: 12/17/2015] [Indexed: 11/26/2022] Open
Abstract
A cooked rice model for bibimbap was developed using response surface methodology (RSM). The ratio of brown rice (X 1), high amylose rice (X 2) based on a white rice ratio of 1.0, and the ratio of water to total rice weight (X 3), were independent variables. Stickiness (Y 1), elasticity (Y 2), and overall acceptability by sensory testing (Y 3) of cooked rice were dependent variables. Optimal RSM conditions were white rice:brown rice:high amylose rice=1:1.07:0.56, and the ratio of water to total rice weight was 1.6. Coefficient of determination (R 2) values of response surface equations were 0.909, 0.930, and 0.956 for Y 1, Y 2, and Y 3, respectively (p<0.05). Experimental values measured under optimal conditions coincided with predicted values. Rapidly digestive starch (RDS) and expected glycemic index (eGI) values determined using the optimized rice model were much lower than for control white rice only.
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Affiliation(s)
- Jin-Sil Lee
- 1Department of Foodservice Management and Nutrition, Sangmyung University, Seoul, 03016 Korea
| | - Seung-Mock Cho
- 2Korea Food Research Institute, Seongnam, Gyeonggi, 13539 Korea
| | - Bum-Keun Kim
- 2Korea Food Research Institute, Seongnam, Gyeonggi, 13539 Korea
| | - Jung-Ah Han
- 1Department of Foodservice Management and Nutrition, Sangmyung University, Seoul, 03016 Korea
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Lim ST, Han JA. Improvement in antioxidant functionality and shelf life of yukwa (fried rice snack) by turmeric (Curcuma longa L.) powder addition. Food Chem 2015; 199:590-6. [PMID: 26776012 DOI: 10.1016/j.foodchem.2015.12.046] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Revised: 12/09/2015] [Accepted: 12/09/2015] [Indexed: 11/17/2022]
Abstract
The physico-chemical, oxidative and sensory characteristics of fried rice snack, yukwa with different amounts of turmeric powder (Curcuma longa) were investigated. The moisture content of the pallet ranged from 16.47% to 19.84%. After frying the pallet, a slight decrease in the degree of expansion was obtained with increasing turmeric powder content. The textural properties of yukwa were not changed until the turmeric powder content reached 5%; however, over 8% addition induced a decrease in the hardness and an increase in the crispiness. Oxidative deterioration was effectively inhibited by turmeric powder addition, and more turmeric powder in yukwa led to higher free radical scavenging activity. Based on the sensory characteristics, a 5% addition of turmeric powder was the most acceptable for the yukwa product. In the correlation results among variables, the moisture content of the pallet proved to be the most important factor for yukwa quality.
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Affiliation(s)
- Seung-Taik Lim
- Graduate School of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Republic of Korea.
| | - Jung-Ah Han
- Department of Foodservice Management and Nutrition, Sangmyung University, Seoul 110-743, Republic of Korea.
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Kim HS, Lee EJ, Lim ST, Han JA. Self-enhancement of GABA in rice bran using various stress treatments. Food Chem 2015; 172:657-62. [DOI: 10.1016/j.foodchem.2014.09.107] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Revised: 09/17/2014] [Accepted: 09/18/2014] [Indexed: 11/25/2022]
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Lee HJ, Kim JM, Kim KH, Heo JI, Kwak SJ, Han JA. Genotoxic stress/p53-induced DNAJB9 inhibits the pro-apoptotic function of p53. Cell Death Differ 2014; 22:86-95. [PMID: 25146923 DOI: 10.1038/cdd.2014.116] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Revised: 06/11/2014] [Accepted: 07/08/2014] [Indexed: 02/07/2023] Open
Abstract
DNAJB9 is a recently isolated member of the molecular chaperone gene family, whose precise function is largely unknown. In the present study, we have identified DNAJB9 as an inducible gene of the tumor suppressor p53. DNAJB9 expression was induced by p53 or genotoxic stress in a p53-dependent manner, which was mediated by the Ras/Raf/ERK pathway. In addition, depletion of DNAJB9 by using siRNAs greatly increased genotoxic stress/p53-induced apoptosis, suggesting that DNAJB9 inhibits the pro-apoptotic function of p53. We also found that DNAJB9 physically interacts with p53 through its J domain, through which it inhibits the pro-apoptotic function of p53. Moreover, DNAJB9 colocalized with p53 in both cytoplasm and nucleus under genotoxic conditions. Together, these results demonstrate that DNAJB9 is a downstream target of p53 that belongs to the group of negative feedback regulators of p53.
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Affiliation(s)
- H J Lee
- Department of Biochemistry and Molecular Biology, Kangwon National University School of Medicine, Chuncheon, South Korea
| | - J M Kim
- Department of Biochemistry and Molecular Biology, Kangwon National University School of Medicine, Chuncheon, South Korea
| | - K H Kim
- Institute for Systems Biology, Seattle, WA, USA
| | - J I Heo
- Department of Biochemistry, College of Medicine, Hallym University, Chuncheon, South Korea
| | - S J Kwak
- Department of Biochemistry, College of Medicine, Dankook University, Cheonan, South Korea
| | - J A Han
- Department of Biochemistry and Molecular Biology, Kangwon National University School of Medicine, Chuncheon, South Korea
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Cho DH, Han JA, Lim ST. Identification of botanical origin of starch by using peptide mass fingerprinting of granule-bound starch synthase. J Cereal Sci 2013. [DOI: 10.1016/j.jcs.2013.02.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Kim HY, Han JA, Kweon DK, Park JD, Lim ST. Effect of ultrasonic treatments on nanoparticle preparation of acid-hydrolyzed waxy maize starch. Carbohydr Polym 2013; 93:582-8. [DOI: 10.1016/j.carbpol.2012.12.050] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2012] [Revised: 12/11/2012] [Accepted: 12/12/2012] [Indexed: 10/27/2022]
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Lee H, Jang EH, Lee JS, Hong WS, Kim YS, Han JA. Textural and sensory properties of rice noodle blended with of hydrocolloids. ACTA ACUST UNITED AC 2012. [DOI: 10.9724/kfcs.2012.28.6.703] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Jin YC, Li ZH, Hong ZS, Xu CX, Han JA, Choi SH, Yin JL, Zhang QK, Lee KB, Kang SK, Song MK, Kim YJ, Kang HS, Choi YJ, Lee HG. Conjugated linoleic acid synthesis-related protein proteasome subunit α 5 (PSMA5) is increased by vaccenic acid treatment in goat mammary tissue. J Dairy Sci 2012; 95:4286-97. [PMID: 22818443 DOI: 10.3168/jds.2011-4281] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2011] [Accepted: 03/07/2012] [Indexed: 11/19/2022]
Abstract
This study was conducted to identify proteins associated with the endogenous synthesis of conjugated linoleic acid (CLA) from trans-vaccenic acid (TVA; trans-11 C18:1, a precursor for CLA endogenous synthesis) in mammary tissues. Six lactating goats were divided into 2 groups. One group was given an intravenous bolus injection of TVA (150mg) twice daily over 4 d; the other group received saline injections. Treatment with TVA increased the concentration of cis-9,trans-11 CLA and TVA in goat milk. Additionally, TVA treatment increased the expression of stearoyl-CoA desaturase (SCD) in mammary tissue. Using 2-dimensional gel electrophoresis and electrospray ionization quadrupole time-of-flight mass spectrometry, 3 proteins affected by infusions of TVA were identified. Proteasome (prosome, macropain) subunit α type 5 (PSMA5) was upregulated, whereas peroxiredoxin-1 and translationally controlled tumor protein 1 were downregulated in TVA-treated animals compared with the vehicle-injected controls. Only the effect of TVA on PSMA5 could be confirmed by Western blot analysis. To further explore the regulation of PSMA5 in mammary epithelial cells when TVA is converted into CLA, we used a differentiated bovine mammary epithelial cell line treated with TVA for 6h. Changes in cis-9,trans-11 CLA concentrations and mRNA expression patterns of both SCD and PSMA5 were monitored. The concentration of cis-9,trans-11 CLA increased after TVA treatment. The mRNA expression level of PSMA5 was significantly elevated to 6h, but SCD mRNA expression only increased in 2h after TVA treatment. These results indicate that PSMA5 is highly expressed in goat mammary tissue and bovine mammary epithelial cells when TVA is converted into CLA. Our data suggest that PSMA5 protein is associated with CLA biosynthesis in mammary tissue.
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Affiliation(s)
- Y C Jin
- Department of Animal Science, College of Animal Science and Veterinary Medicine, Jilin University, Changchun 130062, People's Republic of China
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Han JA, Lim ST. Effect of γ-irradiation on pasting and emulsification properties of octenyl succinylated rice starches. Carbohydr Polym 2012; 90:1480-5. [DOI: 10.1016/j.carbpol.2012.07.018] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2012] [Revised: 06/18/2012] [Accepted: 07/06/2012] [Indexed: 11/28/2022]
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Affiliation(s)
- Jung-Ah Han
- Department of Foodservice Management and Nutrition, Sangmyung University, Seoul 110-743, Korea
- Corresponding authors. (Han) Phone: 82-2-2287-5357. Fax: 82-2-2287-0071. E-mail: . (Lim) Phone: 82-2-3290-3435. Fax: 82-2-927-5201. E-mail:
| | - Seung-Taik Lim
- Corresponding authors. (Han) Phone: 82-2-2287-5357. Fax: 82-2-2287-0071. E-mail: . (Lim) Phone: 82-2-3290-3435. Fax: 82-2-927-5201. E-mail:
- School of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Korea
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Han JA, BeMiller JN. Effects of protein on crosslinking of normal maize, waxy maize, and potato starches. Carbohydr Polym 2008; 73:532-40. [DOI: 10.1016/j.carbpol.2007.12.022] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2007] [Revised: 11/13/2007] [Accepted: 12/21/2007] [Indexed: 10/22/2022]
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Affiliation(s)
- Jung-Ah Han
- Division of Human Environmental Sciences, Sangmyung University, Seoul 110-743, Korea
| | - Min-Jung Lee
- Graduate School of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Korea
| | - Seung-Taik Lim
- Graduate School of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Korea
- Corresponding author. Phone: 82-2-3290-3435. E-mail:
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S. Lim H, Han JA, N. BeMiller J, Lim ST. Physical Modification of Waxy Maize Starch by Dry Heating with Ionic Gums. J Appl Glycosci (1999) 2006. [DOI: 10.5458/jag.53.281] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Han JA, Lim H, Lim ST. Comparison between Size Exclusion Chromatography and Micro-Batch Analyses of Corn Starches in DMSO using Light Scattering Detector. STARCH-STARKE 2005. [DOI: 10.1002/star.200400365] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Han JA, Lee BH, Lim WJ, Lim ST. Utilization of Hydroxypropylated Waxy Rice and Corn Starches in Korean Waxy Rice Cake to Retard Retrogradation. Cereal Chem 2005. [DOI: 10.1094/cc-82-0088] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Jung-Ah Han
- School of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Korea
| | - Bok-Hee Lee
- School of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Korea
| | - Wang Jin Lim
- School of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Korea
| | - Seung-Taik Lim
- School of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Korea
- Corresponding author. Phone: 82-2-3290-3435. E-mail:
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Abstract
We evaluated DNA protection effect of heat shock protein (HSP) against cytotoxic effects of exogenous nitric oxide (NO) and reactive oxygen intermediate (ROI). Cultured human corneal fibroblasts were divided into 4 groups. Control (Group I) was not exposed to a sub-lethal heat treatment. Other 3 groups were exposed to 43 degrees C for 1 hr, then incubated at 37 degrees C during different duration (1, 6, 24 hr, Group II, III, IV, respectively). Expression pattern of HSP 70 was analyzed by Western blot. Cell viability was measured by MTT assay and the relationship between HSP 70 expression and DNA damage was examined by terminal deoxyribonucleotidyl transferase mediated dUTP-digoxigenin nick and labeling (TUNEL) stain and single cell gel electrophoresis. Expression pattern of HSP 70 was dependent on recovery times. Cell viability following heat treatment was significantly increased and the TUNEL positive cell number was decreased at 6 hr. In single cell gel electrophoresis, tail moments were increased in a dose-dependent manner by SNAP and X/XO. Following heat treatment, tail moments showed decreased significantly at 6 hr. These results suggest that induction of HSP 70 by sub-lethal heat treatment is closely related with cytoprotective effects against oxidative stresses in human corneal fibroblasts.
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Affiliation(s)
- Yun-Sang Kim
- Department of Ophthalmology, College of Medicine, Chung-Ang University, Seoul, Korea
| | - Jung-Ah Han
- Department of Ophthalmology, College of Medicine, Chung-Ang University, Seoul, Korea
| | - Tae-Bum Cheong
- Department of Ophthalmology, College of Medicine, Chung-Ang University, Seoul, Korea
| | - Jae-Chun Ryu
- Korea Institute of Science and Technology, Seoul, Korea
| | - Jae-Chan Kim
- Department of Ophthalmology, College of Medicine, Chung-Ang University, Seoul, Korea
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Abstract
Modification of transcription factors would result in significant changes in the expression of related genes. Recently, the presence of transglutaminase (TGase) has been reported in nuclei, the biological significances of which have attracted a great concern. In this study, we tested the possibility that nuclear TGase would crosslink and regulate the activity of a glutamine-rich transcription factor Sp1. The addition of purified guinea pig liver TGase increased the binding activity of Sp1 to the target DNA sequence by gel electrophoretic mobility shift assay. The activity of the human p21WAF1 promoter containing six Sp1 binding sites was increased by the cotransfection of the TGase 2 gene, and two Sp1 sites at -82 and -69, relative to the transcription start site, were essential for the increased activity in human renal embryonic 293T cells. The activity of a minimal promoter containing three consensus Sp1 binding sites was increased by co-transfection of human TGase 2 gene. The amount of Sp1 protein was increased dramatically in TGase 2-transfected 293T cells and the Sp1 protein itself from HeLa cell nuclear extracts was crosslinked readily by purified TGase at 37 degrees C in the presence of Ca2+. These results suggest that the nuclear TGase might modulate the activity of the Sp1 transcription factor probably via the posttranslational or transcriptional modification of the factor by TGase.
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Affiliation(s)
- J A Han
- Department of Biochemistry and Molecular Biology, Kangwon National University College of Medicine, Korea
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Yoo YM, Kim KM, Kim SS, Han JA, Lea HZ, Kim YM. Hemoglobin toxicity in experimental bacterial peritonitis is due to production of reactive oxygen species. Clin Diagn Lab Immunol 1999; 6:938-45. [PMID: 10548590 PMCID: PMC95802 DOI: 10.1128/cdli.6.6.938-945.1999] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Hemoglobin (Hb) is a toxic molecule responsible for the extreme lethality associated with experimental Escherichia coli peritonitis, but the mechanism has yet to be elucidated. Hb, but not globin, showed toxic effects in a live E. coli model but not in a model using killed E. coli. Methemoglobin, hematin, and the well-known Fenton reagents iron and iron-EDTA demonstrated the same lethal effect in E. coli peritonitis as Hb, while the addition of the Fenton inhibitors desferrioxamine (DF) and diethylenetriamine pentaacetate removed most of the cytotoxic activity of iron. Administration of a combined dose of superoxide dismutase and catalase minimized the action of Hb and iron-EDTA, suggesting that both O(2)(.-) and H(2)O(2) are involved in the toxic action of Hb in this rat model. The combination of the antioxidative enzymes and DF further suppressed iron-mediated lethality. An electron spin resonance technique with the spin-trapping reagent 5, 5-dimethyl-1-pyroline-N-oxide (DMPO) showed O(2)(.-) generation in the peritoneal fluid of rats injected with E. coli alone or E. coli plus iron-DF, and (.)OH generation was detected in the peritoneal fluid of the rats injected with iron-EDTA. Hb did not show any spin adduct of oxygen radicals, suggesting that Hb produces non-spin-trapping radical ferryl ion, which decayed the spin adduct of DMPO. In the presence of Hb or iron-EDTA, O(2)(-)-generating activity and viability of phagocytes decreased, whereas lipid peroxidation of peritoneal phagocytes increased. Generation of oxygen radicals and lipid peroxidation did not differ in the live and dead bacterial models. Bacterial numbers in the peritoneal cavity and blood were markedly increased in the live bacterial model with Hb and iron-EDTA. The Fenton inhibitor iron-DF prevented the loss of phagocyte function, lipid peroxidation, and bacterial proliferation. These results led us to conclude that the lethal toxicity of Hb in bacterial peritonitis is associated with a Fenton-type reaction, the products of which decrease phagocyte viability, through the induction of lipid peroxidation, allowing bacterial proliferation and resulting in mortality.
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Affiliation(s)
- Y M Yoo
- Departments of Molecular and Cellular Biochemistry, Kangwon National University, Chunchon, Kangwon-do, Korea
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Kim YM, Chung HT, Kim SS, Han JA, Yoo YM, Kim KM, Lee GH, Yun HY, Green A, Li J, Simmons RL, Billiar TR. Nitric oxide protects PC12 cells from serum deprivation-induced apoptosis by cGMP-dependent inhibition of caspase signaling. J Neurosci 1999; 19:6740-7. [PMID: 10436031 PMCID: PMC6782848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023] Open
Abstract
Although nitric oxide (NO) induces neuronal cell death under some conditions, it also can prevent apoptosis resulting from growth factor withdrawal. We investigated the molecular mechanism by which NO protects undifferentiated and differentiated PC12 cells from trophic factor deprivation-induced apoptosis. PC12 cells underwent apoptotic death in association with increased caspase-3-like activity, DNA fragmentation, poly(ADP-ribose) polymerase (PARP) cleavage, and cytochrome c release after 24 hr of serum withdrawal. The apoptosis of PC12 cells was inhibited by the addition of NO-generating donor S-nitroso-N-acetylpenicillamine (SNAP) (5-100 microM) and the specific caspase-3-like protease inhibitor Ac-Asp-Glu-Val-Asp-aldehyde (Ac-DEVD-cho) but not the YVADase (or caspase-1-like protease) inhibitor N-acetyl-Tyr-Val-Ala-Asp-aldehyde (Ac-YVAD-cho). SNAP and Ac-DEVD-cho prevented the increase in DEVDase (caspase-3-like protease) activity. The SNAP-mediated suppression of DEVDase activity was only minimally reversed by the incubation of cell lysate with dithiothreitol, indicating that NO did not S-nitrosylate caspase-3-like proteases in PC12 cells. Western blot analysis showed that NO inhibited the proteolytic activation of caspase-3. The cGMP analog 8-bromo-cGMP (8-Br-cGMP) blocked apoptotic cell death, caspase-3 activity and activation, and cytochrome c release. The soluble guanylyl cyclase inhibitor 1-H-oxodiazol-[1,2,4]-[4,3-a] quinoxaline-1-one (CODQ) significantly attenuated NO-mediated, but not 8-Br-cGMP-dependent, inhibition of apoptotic cell death, PARP cleavage, cytochrome c release, and DEVDase activity. Furthermore, the protein kinase G inhibitor KT5823 reversed both SNAP- and 8-Br-cGMP-mediated anti-apoptotic events. All these apoptotic phenomena were also suppressed by NO production through neuronal NO synthase gene transfer into PC12 cells. Furthermore, similar findings were observed in differentiated PC12 cells stimulated to undergo apoptosis by NO donors and NGF deprivation. These findings indicate that NO protects against PC12 cell death by inhibiting the activation of caspase proteases through cGMP production and activation of protein kinase G.
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Affiliation(s)
- Y M Kim
- Department of Molecular and Cellular Biochemistry, College of Medicine, Kangwon National University, Chunchon, Kangwon-do, Korea
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Abstract
Increased expression of Transglutaminases 2 (TGase 2, TGase C) was observed in PC-14 human lung cancer cells in association with doxorubicin resistance and the reduction of the enzyme expression was correlated with the increasing cytotoxicity of the drug (Han and Park, 1999). Hydrogen peroxide was suggested to be a key mediator for doxorubicin-induced DNA fragmentation leading to apoptosis. A possible role of hydrogen peroxide as a putative mediator of TGase 2 expression in the doxorubicin sensitive PC-14 cells was examined. TGase 2 expression was increased in PC-14 cells treated with doxorubicin in a dose-dependent manner resulting in the concomitant increase of reactive oxygen species. The rise of TGase 2 expression by doxorubicin treatment was inhibited by N-acetylcysteine or glutathione treatment, while direct addition of hydrogen peroxide to PC-14 cells induced TGase 2 expression. These results suggest that generation of hydrogen peroxide induced by doxorubicin treatment is one of the key factors in an enhancement of TGase 2 expression in PC-14 cells.
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Affiliation(s)
- J A Han
- Department of Biochemistry, Kangwon National University College of Medicine, Choonchun, Korea
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Han JA, Park SC. Reduction of transglutaminase 2 expression is associated with an induction of drug sensitivity in the PC-14 human lung cancer cell line. J Cancer Res Clin Oncol 1999; 125:89-95. [PMID: 10190315 DOI: 10.1007/s004320050247] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Recently a role for transglutaminase 2 (TGase 2) in the drug resistance of cancer cells has been suggested, although the mechanism is unclear. In the present study, we observed that doxorubicin-resistant PC-14/ADR cells showed a ten-fold higher level of TGase 2 expression than drug-sensitive PC-14 cells. PC-14/ADR cells exhibited the classical multidrug resistance (MDR) phenotype, which was cross-resistant to vincristine, but not to cisplatin. The stepwise induction of resistance to doxorubicin and vincristine in PC-14 cells was accompanied by a gradual increase of TGase 2 expression, but this expression was not increased with induction of cisplatin resistance. To confirm the role of TGase 2 protein in the acquisition of drug resistance in PC-14 cells, the TGase 2 expression in PC-14/ADR cells was reduced by stable transfection with the antisense or ribozyme construct. In the clones showing reduced expression of TGase 2, lactate dehydrogenase released from drug-treated cells was increased in the presence of either MDR-related drugs (doxorubicin and vincristine) or a non-MDR-related drug (cisplatin). These data suggest that TGase 2 can play a role in the acquisition of drug resistance in PC-14 cells through a general cellular defense system other than the MDR-related system.
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Affiliation(s)
- J A Han
- Department of Biochemistry, Kangwon National University College of Medicine, Korea
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Park SC, Yeo EJ, Han JA, Hwang YC, Choi JY, Park JS, Park YH, Kim KO, Kim IG, Seong SC, Kwak SJ. Aging process is accompanied by increase of transglutaminase C. J Gerontol A Biol Sci Med Sci 1999; 54:B78-83. [PMID: 10051854 DOI: 10.1093/gerona/54.2.b78] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Crosslinking has been suggested as one of the mechanisms involved in the aging process. Among the various random or enzyme-mediated crosslinking reactions, transglutaminase (TGase)-catalyzed crosslinking activity has been proposed for its possible involvement in cell proliferation, differentiation, carcinogenesis, programmed death, and aging. Moreover, recent findings of TGase C as a putative signal transducer and cell cycle regulator has renewed interest in the study of TGase C in relation to aging phenomena. The ubiquitous presence of TGase C compared to the organ-specific localization of other types of TGases has attracted special attention as a cellular aging device. In the present investigation for in vitro studies, we have compared the pattern of TGase C in young and old human red blood cells, separated by density differentiation, and in early and late-passage or hydrogen peroxide-treated human primary fibroblasts. For in vivo study, we monitored the age-dependent changes of TGase C in the liver and brain tissues of 4, 12, 18, and 24-month-old Sprague-Dawley rats. We obtained evidence that both the activity and protein levels of TGase C were high in old RBC and late-passage or hydrogen peroxide-treated fibroblasts. Similar findings were seen in liver and brain tissue such as age-dependent increases in TGase activity and protein level in an organ-specific pattern. These data suggest that TGase C might play an active role in the cellular process with age.
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Affiliation(s)
- S C Park
- Department of Biochemistry, Seoul National University College of Medicine, Republic of Korea.
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Kim DH, Jung EA, Sohng IS, Han JA, Kim TH, Han MJ. Intestinal bacterial metabolism of flavonoids and its relation to some biological activities. Arch Pharm Res 1998; 21:17-23. [PMID: 9875509 DOI: 10.1007/bf03216747] [Citation(s) in RCA: 294] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Flavonoid glycosides were metabolized to phenolic acids via aglycones by human intestinal microflora producing alpha-rhamnosidase, exo-beta-glucosidase, endo-beta-glucosidase and/or beta-glucuronidase. Rutin, hesperidin, naringin and poncirin were transformed to their aglycones by the bacteria producing alpha-rhamnosidase and beta-glucosidase or endo-beta-glucosidase, and baicalin, puerarin and daidzin were transformed to their aglycones by the bacteria producing beta-glucuronidase, C-glycosidase and beta-glycosidase, respectively. Anti-platelet activity and cytotoxicity of the metabolites of flavonoid glycosides by human intestinal bacteria were more effective than those of the parental compounds. 3,4-Dihydroxyphenylacetic acid and 4-hydroxyl-phenylacetic acid were more effective than rutin and quercetin on anti-platelet aggregation activity. 2,4,6-Trihydroxybenzaldehyde, quercetin and ponciretin were more effective than rutin and ponciretin on the cytotoxicity for tumor cell lines. We insist that these flavonoid glycosides should be natural prodrugs.
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Affiliation(s)
- D H Kim
- College of Pharmacy, Kyung-Hee University, Seoul, Korea
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Kang MS, Kim HS, Han JA, Park SC, Kim WB, Park JG. Characteristics of human gastric carcinoma cell lines with induced multidrug resistance. Anticancer Res 1997; 17:3531-6. [PMID: 9413198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
In contrast to intrinsic drug resistance, induced multidrug resistance in gastric cancer cells has not been well studied. Therefore, two doxorubicin-resistant cell lines, (SNU-1DOX, SNU-16DOX), were derived in vitro from gastric carcinoma cell lines (SNU-1, SNU-16) respectively, and their characteristics were investigated. These resistances were not associated with overexpression of mdrl, multidrug resistance associated protein 1 (MRP1), pi or liver class of glutathione S transferase (GST pi, GSTL), heat shock protein 70 (HSP70), p53 or transglutaminase C (TGC). Levels of p21WAF1 RNA and topoisomerase II protein were decreased in the SNU-16DOX, but not in SNU-1DOX. However, the subsequent enzyme activity of topoisomerase II in SNU-16DOX was not decreased, but rather increased in SNU-16DOX. Furthermore, both resistant cell lines showed lower uptake and higher efflux of doxorubicin and induced cross-resistance to etoposide and vincristine in addition to doxorubicin, indicating a multi-drug resistance phenotype. In summary, we report two gastric carcinoma cell lines exhibiting induced multidrug resistance phenotype and suggest that mdrl, MRP1, GST, TGC, HSP70 and p53 do not play important roles in induced drug resistance in these cell lines. The role of changes in topoisomerase II activity and/or protein is still inconclusive, and p21WAF1 is associated with induced multidrug resistance in the SNU-16DOX gastric carcinoma cell line.
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MESH Headings
- ATP Binding Cassette Transporter, Subfamily B, Member 1/genetics
- ATP Binding Cassette Transporter, Subfamily B, Member 1/metabolism
- Biological Transport
- Carcinoma/pathology
- Cyclin-Dependent Kinase Inhibitor p21
- Cyclins/metabolism
- DNA Topoisomerases, Type II/metabolism
- DNA-Binding Proteins/genetics
- DNA-Binding Proteins/metabolism
- Doxorubicin/metabolism
- Drug Resistance, Multiple
- Drug Resistance, Neoplasm
- Gene Expression Regulation, Neoplastic
- Glutathione Transferase/metabolism
- HSP70 Heat-Shock Proteins/metabolism
- Humans
- Multidrug Resistance-Associated Proteins
- MutS Homolog 3 Protein
- RNA, Messenger/genetics
- Stomach Neoplasms/pathology
- Transglutaminases/metabolism
- Tumor Cells, Cultured
- Tumor Suppressor Protein p53/genetics
- Tumor Suppressor Protein p53/metabolism
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Affiliation(s)
- M S Kang
- Laboratory of Cell Biology, Seoul National University College of Medicine, Korea
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Han JA, Hu WY. [Progress in the study on protective effect of saponins Panax notoginseng on ischemic brain damage]. Zhongguo Zhong Xi Yi Jie He Za Zhi 1996; 16:506-7. [PMID: 9387754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Han JA, Lu CM, Brown GB, Rado TA. Direct amplification of a single dissected chromosomal segment by polymerase chain reaction: a human brain sodium channel gene is on chromosome 2q22-q23. Proc Natl Acad Sci U S A 1991; 88:335-9. [PMID: 1846440 PMCID: PMC50805 DOI: 10.1073/pnas.88.2.335] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
We have devised a general strategy for gene mapping based upon the direct amplification of a target sequence within a single microdissected Giemsa-banded chromosomal segment using the polymerase chain reaction. The usefulness of this approach was demonstrated by mapping a cloned human brain sodium channel (alpha subunit) gene sequence to chromosome 2q22-q23. When DNA from single, dissected chromosome segments 2q21-qter and 2q24-pter were used as templates, a sodium channel-specific 172-base-pair polymerase chain reaction product was obtained. This product was not synthesized when segments 2q21-pter and 2q24-qter were used. Chromosome microdissection-polymerase chain reaction is not only a simple, fast, and accurate method for gene mapping but also may offer significant advantages for other applications, such as cancer cytogenetics and linkage analysis.
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Affiliation(s)
- J A Han
- Laboratory of Medical Genetics, University of Alabama, Birmingham 35294
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