Establishment of Leukemia Mouse Model Using Mouse-Derived A20 Leukemic Cells, and Detection of Tumor Cells in Bone Marrow

Lan Ying Wen,Su-Mi Bae,Woong Shick Ahn 한국실험동물학회 2010 Laboratory Animal Research Vol.26 No.4

Objectives of this study were to establish a leukemia mouse model in the Balb/c mouse based upon the A20 cell line (murine B-lymphoma/leukemia cell line, H-2<SUP>d</SUP>). Here we demonstrate for the first time that A20 cells were infiltrated into tissue and bone marrow, thereby evaluate the feasibility of using A20 leukemic cells as a leukemia model. In the study, changes of behavior, survival rate and histological changes of major organs after intravenous injection of A20 cells (1×10?, 1×10? or 1×10?) into Balb/c mice were observed. After inoculation of 1×10? cells, animals survived up to 38.3 days, although there were no significant correlation between the number of injected cells and life-span. At 21 and 28 days postinjection, both hematoxylin-eosin and CD45R immunohistochemical stains showed diffuse large B-cell lymphoma in the liver. FACS analysis was performed after injection of fluorescent nanomaterial (MNPs@SiO2 RITC)-labeled A20 cells. The labeled A20 cells were detected in bone marrow from 6 hours post-inoculation, indicative of the cellular infiltration. This is the first study that demonstrated the invasion of A20 cells into the bone marrow of Balb/c model using A20 cells. With the occurrence of systemic lesions following metastasis of the cells into lymph nodes and neighboring tissues via bone marrow infiltration, it is suggested that the A20 cell-inoculated Balb/c miouse could be an animal model of acute lymphocytic leukemia.

Quality of Life for Patients with Esophageal/Gastric Cardia Precursor Lesions or Cancer: A One-year Prospective Study

Wen, Ying,Pan, Xiong-Fei,Huang, Wen-Zhi,Zhao, Zhi-Mei,Wei, Wen-Qiang,Chen, Feng,Lan, Hui,Huang, He,Yang, Chun-Xia,Qiao, You-Lin Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.1

Background: The current study examined health-related quality of life (QoL) for patients with esophageal/gastric cardia precursor lesions or cancer before and after treatment to facilitate improved prevention and treatment. Materials and Methods: Patients with different stages of esophageal/gastric cardia lesions completed two QoL questionnaires, EORTC QLQ-C30 and supplemental QLQ-OES 18, before primary treatment, and at 1, 6 and 12 months after treatment. Results: Fifty-nine patients with precursor lesions, 57 with early stage cancer, and 43 with advanced cancer responded to our survey. Patients with precursor lesions or early stage cancer reported better QoL overall than those with advanced cancer before treatment (p<0.01). Global QoL scores before treatment and at 1 month after treatment were $71{\pm}9$ versus $69{\pm}9$ (p>0.01), $71{\pm}8$ versus $61{\pm}11$ (p<0.01), $67{\pm}11$ versus $62{\pm}9$ (p<0.01) for three stages of lesions. At 6 months after treatment, some QoL measures recovered gradually in precursor lesion and early cancer patients, while some continuously deteriorated in advanced cancer patients. At 12 months, all QoL scores were comparable to baseline for patients with precursor lesions (p>0.01), while global QoL, social, pain, and insomnia scores for early stage and advanced cancer were inferior to corresponding baseline levels (difference between means>5, p<0.01). At this time point, compared with patients with early stage cancer, those with advanced cancer showed worse QoL with all function and most symptom measures (p<0.01). Conclusions: Patients with precursor lesions or early stage esophageal/gastric cardia cancer show better QoL than those with advanced cancer. This indicates that screening, early diagnosis and treatment may improve the QoL for esophageal/gastric cardia cancer patients. Target intervention and counseling should be given by health care providers during treatment and follow-up to facilitate QoL improvement.

Therapeutic effects of systemic photodynamic therapy in a leukemia animal model using A20 cells.

Wen, Lan Ying,Bae, Su-Mi,Chun, Heung-Jae,Park, Kye-Shin,Ahn, Woong Shick Baillière Tindall ; Springer London 2012 LASERS IN MEDICAL SCIENCE Vol.27 No.2

<P>Photodynamic therapy (PDT) is attracting attention because of its noticeable inhibitory effects on the growth of dermatological and other solid tumors. Here, we studied the use of PDT in systemic diseases such as leukemia, lymphoma, and metastatic cancer, for which tumor formation areas cannot be clearly compartmentalized. We developed a systemic PDT method and examined its effect in a leukemia mouse model. Growth inhibition of A20 cells (H-2(d), murine B-lymphoma/leukemia, and Balb/c origin) induced by PDT/Photodithazine was evaluated by EZ-Cytox assay. After PDT, changes in cell morphology were assessed by light microscopy. Induction of apoptosis, as well as changes in the cell cycle, were assessed by fluorescence-activated cell sorting (FACS) analysis. A20 cells were injected into Balb/c mice through the tail veins, and PDT was performed. A total of 10 mg kg(-1) body weight of Photodithazine concentration was injected intravenously. After 5 min, micro photofibers (diameter, 200 μm) were inserted into the tail veins and irradiated at 1,200 J with a laser. PDT inhibited growth of A20 cells and resulted in marked morphological changes. PDT also induced apoptosis and G1 arrest. In a leukemia mouse model, systemic PDT increased the survival rate (p < 0.01). This is the first report of the effects of systemic PDT in a leukemia animal model. PDT has been applied only locally in most cases, for example to solid tumors. This study provides experimental evidence that systemic PDT could effectively be applied to systemic and spread tumors, for which tumor formation areas cannot clearly be determined.</P>

Impact of Interleukin-10 Gene Polymorphisms on Survival in Patients with Colorectal Cancer

Wen-Chien Ting,Lu-Min Chen,Li-Chia Huang,Mann-Jen Hour,Yu-Hsuan Lan,Hong-Zin Lee,Bang-Jau You,Ta-Yuan Chang,Bo-Ying Bao 대한의학회 2013 Journal of Korean medical science Vol.28 No.9

Chronic inflammation is thought to be the leading cause of colorectal cancer, and interleukin-10 (IL10) has been identified as a potent immunomodulatory cytokine that regulates inflammatory responses in the gastrointestinal tract. Although several single nucleotide polymorphisms (SNPs) in IL10 have been associated with the risk of colorectal cancer, their prognostic significance has not been determined. Two hundred and eightytwo colorectal cancer patients were genotyped for two candidate cancer-associated SNPs in IL10. The associations of these SNPs with distant metastasis-free survival and overall survival were evaluated by Kaplan-Meier analysis and Cox regression model. The minor homozygote GG genotype of IL10 rs3021094 was significantly associated with a 3.30-fold higher risk of death compared with the TT+TG genotypes (P = 0.011). The patients with IL10rs3021094 GG genotype also had a poorer overall survival in Kaplan-Meier analysis (log-rank P = 0.007) and in multivariate Cox regression model (P = 0.044) adjusting for age, gender,carcinoembryonic antigen levels, tumor differentiation, stage, lymphovascular invasion,and perineural invasion. In conclusion, our results suggest that IL10 rs3021094 might be a valuable prognostic biomarker for colorectal cancer patients.

Lateral-torsional Buckling Analysis of Cantilever Beam with Tip Lateral Elastic Brace under Uniform and Concentrated Load

Wen-Fu Zhang,Ying-Chun Liu,Gui-Lan Hou,Ke-Shan Chen,Jing Ji,Yun Deng,Shi-Lin Deng 한국강구조학회 2016 International Journal of Steel Structures Vol.16 No.4

The studies on the lateral-torsional buckling of cantilever steel beam with tip lateral elastic brace are rarely reported. The total potential energy is first established for the lateral-torsional buckling of cantilever steel beam with tip lateral elastic brace under uniform and concentrated load. The modal trial function of the lateral displacement and torsional angle are expressed as trigonometric function combination with six terms. By introducing new dimensionless parameters, the analytical solution of the dimensionless buckling equation for the lateral-torsional buckling of cantilever steel beam with tip lateral elastic brace is obtained. With the help of 1stOpt software which is mathematical optimization analysis software, the non-dimensional critical moment formula of the lateral-torsional buckling of cantilever beam with tip lateral elastic brace is obtained. Then, the accuracy of the formula is verified by ADINA finite element software. The results show that the given critical moment formula is of high accuracy. It provides convenient and simple design method for practical engineering.

Study of the Liouduei Area Hakka Industry`s Attractiveness Factors Using the Evaluation Grid Method

( Po-wen Chen ),( Lan-ying Chuang ),( Shiunn-der Kuo ) 세계문화관광학회 2011 International Journal of Culture and tourism Resea Vol.4 No.1

The added cultural value of a product attracts consumers and a quality product is an attractive object that appeals to consumers. Therefore, theLiouduei area Hakka industry, with its rich cultural background, is also an attractive industry. The Hakka industry attracts visitors to the Liouduei area, contributes to local economy, adds to the output value, and further preserves and promotes the unique Hakka culture in the South. However, what are the attractiveness factors of the Liouduei area Hakka industry in the South? In this study, the Evaluation Grid method of the Miryoku Engineering was used to interview a total of 12 promoters, proprietors, and consumers who are highly involved with the Liouduei area Hakka Industry. These interviews identified four original attractiveness factors including: “Local Characteristics,” “Diverse and Varied Products,” “Unique Southern Hakka Culture,” and “Sense of Tradition and Nostalgia,” as well as 15 concrete attractiveness factors, and 14 abstract attractiveness factors. The attractiveness factors extracted from this study can be used by the Liouduei area Hakka Industry businesses for future reference.

Study of the Liouduei Area Hakka Industry’ Attractiveness Factors Using the Evaluation Grid Method

Po-Wen Chen,Lan-Ying Chuang,Shiunn-Der Kuo 세계문화관광학회 2011 International Journal of Culture and tourism Resea Vol.4 No.1

The added cultural value of a product attracts consumers and a quality product is an attractive object that appeals to consumers. Therefore, the Liouduei area Hakka industry, with its rich cultural background, is also an attractive industry. The Hakka industry attracts visitors to the Liouduei area, contributes to local economy, adds to the output value, and further preserves and promotes the unique Hakka culture in the South. However, what are the attractiveness factors of the Liouduei area Hakka industry in the South? In this study, the Evaluation Grid method of the Miryoku Engineering was used to interview a total of 12 promoters, proprietors, and consumers who are highly involved with the Liouduei area Hakka Industry. These interviews identified four original attractiveness factors including: “Local Characteristics,” “Diverse and Varied Products,” “Unique Southern Hakka Culture,” and “Sense of Tradition and Nostalgia,” as well as 15 concrete attractiveness factors, and 14 abstract attractiveness factors. The attractiveness factors extracted from this study can be used by the Liouduei area Hakka Industry businesses for future reference.

Ets-1 enhances tumor migration through regulation of CCR7 expression

( Li-wen Fang ),( Ying-hsien Kao ),( Ya-ting Chuang ),( Huey-lan Huang ),( Tzong-shyuan Tai ) 생화학분자생물학회(구 한국생화학분자생물학회) 2019 BMB Reports Vol.52 No.9

Ets-1 is a prototype of the ETS protein family. Members of the ETS protein family contain a unique ETS domain. Ets-1 is associated with cancer progression and metastasis in many types of cancer. Many studies have shown a link between elevated expression of Ets-1 in cancer biopsies and poor survival. CCR7 is a chemokine that binds to specific ligand CCL21/CCL19. CCR7 expression is associated with tumor metastasis and infiltration into lymph nodes. The objective of this study was to test whether Ets-1 could regulate CCR7 expression and enhance tumor metastasis. Our data showed that CCR7 expression was downregulated in Ets-1-deficient T cells upon T-cell stimulation. Overexpression of Ets-1 increased CCR7 expression in breast cancer cell lines. In contrast, knockdown of Ets-1 reduced CCR7 expression. Ets-1 could directly bind to CCR7 promoter and mediate CCR7 expression in luciferase reporter assays and chromatin immunoprecipitation assays. Transactivation activity of Ets-1 was independent of the Pointed domain of Ets-1. Ets-1 could also enhance NF- κB and CBP transactivation of CCR7 promoter. Our results also showed that Ets-1 could modulate cancer cell transmigration by altering CCR7 expression in transwell assay and wound healing assay. Taken together, our data suggest that Ets-1 can enhance CCR7 expression and contribute to tumor cell migration. [BMB Reports 2019; 52(9): 548-553]

Impact of the Learning Curve on the Survival of Abdominal or Minimally Invasive Radical Hysterectomy for Early-Stage Cervical Cancer

LI LANYING,Lan Ying Wen,박선희,남은지,이정연,김성훈,김영태,김상운 대한암학회 2021 Cancer Research and Treatment Vol.53 No.1

Purpose The objective of this study was to define the learning curve required to attain satisfactory oncologic outcomes of cervical cancer patients who were undergoing open or minimally invasive surgery for radical hysterectomy, and to analyze the correlation between the learning curve and tumor size. Materials and Methods Cervical cancer patients (stage IA-IIA) who underwent open radical hysterectomy (n=280) or minimal invasive radical hysterectomy (n=282) were retrospectively reviewed. The learning curve was evaluated using cumulative sum of 5-year recurrence rates. Survival outcomes were analyzed based on the operation period (“learning period,” P1 vs. “skilled period,” P2), operation mode, and tumor size. Results The 5-year disease-free and overall survival rates between open and minimally invasive groups were 91.8% and 89.0% (p=0.098) and 96.1% and 97.2% (p=0.944), respectively. The number of surgeries for learning period was 30 and 60 in open and minimally invasive group, respectively. P2 had better 5-year disease-free survival than P1 after adjusting for risk factors (hazard ratio, 0.392; 95% confidence interval, 0.210 to 0.734; p=0.003). All patients with tumors < 2 cm had similar 5-year disease-free survival regardless of operation mode or learning curve. Minimally invasive group presented lower survival rates than open group when tumors ≥ 2 cm in P2. Preoperative conization improved disease-free survival in patients with tumors ≥ 2 cm, especially in minimally invasive group. Conclusion Minimally invasive radical hysterectomy required more cases than open group to achieve acceptable 5-year disease-free survival. When tumors ≥ 2 cm, the surgeon’s proficiency affected survival outcomes in both groups.

Study on Thermodynamics of Three Kinds of Benzindocarbocyanine Dyes in Aqueous Methanol Solution

Wei Huang,Lan-Ying Wang,Yi-Le Fu,Ji-Quan Liu,You-Ni Tao,Fang-Li Fan,Gao-Hong Zhai,Zhen-Yi Wen 대한화학회 2009 Bulletin of the Korean Chemical Society Vol.30 No.3

Aggregation behavior of three kinds of benzindocarbocyanine dyes in aqueous methanol solution was studied by UV-Vis absorption spectrum. The results indicated that the three dyes all existed monomer-dimer equilibrium in aqueous methanol solution (concentration range 10−5 to 10−6 M) at 25.0~41.0 °C for Dye 1, 28.0~49.0 oC for Dye 2 and 26.0~47.0 °C for Dye 3. The fundamental property of the three dyes as the dimeric association constant KD, the dimeric free energy ΔGD, the dimeric entropy ΔSD, and the dimeric enthalpy ΔHD were determined. The ΔHD of three dyes: Dye 1, Dye 2 and Dye 3 was -42.5, -15.1 and -18.9 kJ/mol, respectively. The experimental observations were the subject of a theoretical study including the ground-state geometries which were fully optimized using DFT at B3LYP/6-31G level. The effect of dye molecule structure on ΔHD was discussed by theoretical calculations.