Journal of Pathology and Translational Medicine

Shin Young Park

3 Articles

Quality Control Program for Fresh Frozen Tissue and Its Results of Chonbuk National University Hospital National Biobank of Korea.: Shin Young Park, Hyun Ah Baek, Hyoung Jong Kwak, Sang Hyun Hong, Ho Sung Park, Kyu Yun Jang, Woo Sung Moon, Myoung Jae Kang, Dong Geun Lee, Myoung Ja Chung; Korean J Pathol. 2010;44(3):295-301.; DOI: https://doi.org/10.4132/KoreanJPathol.2010.44.3.295

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BACKGROUND
Molecular tools for tissue profiling generally require collection of fresh frozen tissues (FFT) as sources of high-quality DNA and RNA. Nowadays, researchers carry out large-scale, multi-center studies and they request inter-institutional minimal intrinsic bias, some fundamental similarities, and the same standardized and validated procedures.
METHODS
This study reports standardized quality control procedure for fresh frozen tissue of the National Biobank of Korea.
RESULTS
The main procedures for quality control for FFT are as follows: records related to sample collection such as labeling of samples, transport temperature, lag time from excision of tissue to freezing, and sample size were reviewed for all fresh frozen samples. The stability of RNA and DNA in fresh frozen tissue was evaluated for 3% of collected samples and purity was assessed (ratio of the absorbance at 260 and 280 nm) as was integrity (agarose gel electrophoresis). Stained hematoxylin and eosin sections were reviewed by a pathologist to confirm the diagnosis and to assess how representative the frozen sample was.
CONCLUSIONS
We introduced that the quality-control criteria for fresh frozen tissue of the NBK. We expect that this study contributes to standardization of collection, storage, and quality control of fresh frozen tissue.

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Influence of Cold Ischemia Time and Storage Period on DNA Quality and Biomarker Research in Biobanked Colorectal Cancer Tissues
Min Gyoung Pak, Mee Sook Roh
Kosin Medical Journal.2020; 35(1): 26. CrossRef

The Prognostic Significance of the Tumor-Infiltrating FoxP3-Positive Regulatory T Cells in Gastric Carcinoma.: Sang Jae Noh, Shin Young Park, Kyung Ryoul Kim, Chan Young Kim, Keun Sang Kwon, Ho Sung Park, Ho Lee, Myoung Ja Chung, Woo Sung Moon, Kyu Yun Jang; Korean J Pathol. 2010;44(1):9-15.; DOI: https://doi.org/10.4132/KoreanJPathol.2010.44.1.9

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Abstract PDF

BACKGROUND
Regulatory T cells (Tregs) are known to be key regulators of immune responses in patients with autoimmune disease and infection and also for attenuating antitumor immunity by the host. It has been reported that high numbers of tumor-infiltrating Tregs might be associated with poor clinical outcomes for several malignant tumors. Therefore, this study aimed to examine the impact of tumor-infiltrating Tregs on the prognosis of gastric carcinoma patients.
METHODS
The immunohistochemical staining for anti-fork head Box P3 (FoxP3) antibody was performed by using a 3 mm core from the tumor specimens of each of the 173 gastric cancer patients for constructing a tissue microarray. FoxP3-positive Tregs were quantified by calculating the numbers of positive cells per 5 high-power fields on light microscopy. Thereafter, the 173 patients were subdivided into the low Tregs group (< or = 3/5 high power fields [HPF], n = 41) and the high Tregs group (> 3/5 HPF, n = 132).
RESULTS
The high Tregs group was significantly associated with a higher stage, more invasion depth and lymph node metastasis (p = 0.009, p = 0.036, p = 0.006, respectively). The high Tregs group showed significantly poorer overall survival and event-free survival (p = 0.004, p = 0.017, respectively) on the univariate analysis. The Tregs group and the tumor, node and metastasis stage were also independent prognostic factors that were significantly associated with overall survival (p = 0.025, p < 0.001, respectively) by multivariate analysis.
CONCLUSIONS
Our results indicated that a high number of tumor-infiltrating FoxP3-positive Tregs could be an indicator of poor long term survival for gastric carcinoma patients.

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Tumor-infiltrating PD1-Positive Lymphocytes and FoxP3-Positive Regulatory T Cells Predict Distant Metastatic Relapse and Survival of Clear Cell Renal Cell Carcinoma
Myoung Jae Kang, Kyoung Min Kim, Jun Sang Bae, Ho Sung Park, Ho Lee, Myoung Ja Chung, Woo Sung Moon, Dong Geun Lee, Kyu Yun Jang
Translational Oncology.2013; 6(3): 282. CrossRef
Significance of Foxp3 Positive Regulatory T Cell and Tumor Infiltrating T Lymphocyte in Triple Negative Breast Cancer
Hanna Kang, Harin Cheong, Min Sun Cho, Heasoo Koo, Woon Sup Han, Kyung Eun Lee, Byung In Moon, Sun Hee Sung
The Korean Journal of Pathology.2011; 45(1): 53. CrossRef

Expression and Prognostic Significance of Serum Response Factor in Cholangiocarcinoma.: Shin Young Park, Kyu Yun Jang, Yo Na Kim, Hee Jin Kim, Ho Sung Park, Myoung Ja Chung, Hee Chul Yu, Baik Hwan Cho, Kyoung Ryul Kim, Woo Sung Moon; Korean J Pathol. 2009;43(6):517-522.; DOI: https://doi.org/10.4132/KoreanJPathol.2009.43.6.517

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Abstract PDF

BACKGROUND
Serum response factor (SRF) is a transcriptional factor that plays an important role in cell growth and differentiation for several types of cells. The expression of SRF in cholangiocarcinoma (CC) and its potential role has not been examined. The aim of this study was to determine the relationship between the expression of SRF in CC and the clinicopathological parameters, as well as patient survival.
METHODS
We analyzed the expression of SRF in 84 surgically resected cases of CC (33 cases of intrahepatic CC [ICC] and 51 cases of extrahepatic CC [ECC]) by using immunohistochemistry. RESULTS: The positive expression of SRF was detected in 48.8% of the cases of CC (42.4% in ICC, 52.9% in ECC). SRF was predominantly expressed in the CC cells with intense labeling in the nucleus. A SRF expression was significantly associated with the cell proliferation rate (Ki-67 labeling index, p=0.046) and poor patient survival (p=0.002). The tumor differentiation (p=0.038), the T category (p<0.001), lymph node and distant metastasis (p<0.001, p=0.009) and nerve and vessel invasion (p=0.010, p=0.012) were also found to be significantly associated with a poor CC prognosis. CONCLUSIONS: These results suggest that the SRF may play a role in the tumor cell proliferation of CC, and its expression in tumor cells can provide additional prognostic information.

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Serum response factor induces epithelial to mesenchymal transition with resistance to sorafenib in hepatocellular carcinoma
JUN SANG BAE, SANG JAE NOH, KYOUNG MIN KIM, KYU YUN JANG, MYOUNG JA CHUNG, DAE GOHN KIM, WOO SUNG MOON
International Journal of Oncology.2014; 44(1): 129. CrossRef
Clinicopathologic significance of serum response factor expression in colorectal adenocarcinomas
Se Min Jang, Young Jin Jun, Hulin Han, Kang Hong Lee, Ki-Seok Jang, Seung Sam Paik
Basic and Applied Pathology.2011; 4(2): 46. CrossRef

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