• Asian Pacific Journal of Cancer Prevention
• /
• 제15권22호
• /
• pp.9945-9948
• /
• 2014

Background: The purpose of this study was to investigate Tim-3 expression on peripheral CD3-CD56+ natural killer (NK) cells and CD3+CD56+ natural killer T (NKT) cells in lung cancer patients. Materials and Methods: We analyzed Tim-3+CD3-CD56+ cells, Tim-3+CD3-$CD56^{dim}$ cells, Tim-3+CD3-$CD56^{bright}$ cells, and Tim-3+CD3+CD56+ cells in fresh peripheral blood from 79 lung cancer cases preoperatively and 53 healthy controls by flow cytometry. Postoperative blood samples were also analyzed from 21 members of the lung cancer patient cohort. Results: It was showed that expression of Tim-3 was significantly increased on CD3-CD56+ cells, CD3-$CD56^{dim}$ cells and CD3+CD56+ cells in lung cancer patients as compared to healthy controls (p=0.03, p=0.03 and p=0.04, respectively). When analyzing Tim-3 expression with cancer progression, results revealed more elevated Tim-3 expression in CD3-CD56+ cells, CD3-$CD56^{dim}$ cells and CD3+CD56+ cells in cases with advanced stages (III/IV) than those with stage I and II (p=0.02, p=0.04 and p=0.01, respectively). In addition, Tim-3 expression was significantly reduced on after surgical resection of the primary tumor (p<0.01). Conclusions: Tim-3 expression in natural killer cells from fresh peripheral blood may provide a useful indicator of disease progression of lung cancer. Furthermore, it was indicated that Tim-3 might be as a therapeutic target.

• 대한병리학회지
• /
• 제52권6호
• /
• pp.404-410
• /
• 2018

Background: Fine-needle aspiration cytology serves as a safe, economical tool in evaluating thyroid nodules. However, about 30% of the samples are categorized as indeterminate. Hence, many immunocytochemistry markers have been studied, but there has not been a single outstanding marker. We studied the efficacy of CD56 with human bone marrow endothelial cell marker-1 (HBME-1) in diagnosis in the Bethesda System for Reporting Thyroid Cytopathology (TBSRTC) category III. Methods: We reviewed ThinPrep liquid-based cytology (LBC) samples with Papanicolaou stain from July 1 to December 31, 2016 (2,195 cases) and selected TBSRTC category III cases (n=363). Twenty-six cases were histologically confirmed as benign (six cases, 23%) or malignant (20 cases, 77%); we stained 26 LBC slides with HBME-1 and CD56 through the cell transfer method. For evaluation of reactivity of immunocytochemistry, we chose atypical follicular cell clusters. Results: CD56 was not reactive in 18 of 20 cases (90%) of malignant nodules and showed cytoplasmic positivity in five of six cases (83%) of benign nodules. CD56 showed high sensitivity (90.0%) and relatively low specificity (83.3%) in detecting malignancy (p=.004). HBME-1 was reactive in 17 of 20 cases (85%) of malignant nodules and was not reactive in five of six cases (83%) of benign nodules. HBME-1 showed slightly lower sensitivity (85.0%) than CD56. The specificity in detecting malignancy by HBME-1 was similar to that of CD56 (83.3%, p=.008). CD56 and HBME-1 tests combined showed lower sensitivity (75.0% vs 90%) and higher specificity (93.8% vs 83.3%) in detecting malignancy compared to using CD56 alone. Conclusions: Using CD56 alone showed relatively low specificity despite high sensitivity for detecting malignancy. Combining CD56 with HBME-1 could increase the specificity. Thus, we suggest that CD56 could be a useful preoperative marker for differential diagnosis of TBSRTC category III samples.

• Journal of Microbiology and Biotechnology
• /
• 제27권6호
• /
• pp.1204-1208
• /
• 2017

Natural killer (NK) cells have been reported to be dysfunctional in chronic hepatitis B (CHB) infection. However, the functional recovery of NK cells under antiviral therapeutic agents in CHB was not clearly understood. In this study, we investigated the phenotypic changes of NK(CD56+CD3-) cells in terms of their functional markers (CD16, NKG2A, NKG2D) during tenofovir therapy in CHB. The frequency of NK(CD56+CD3-) cells in CHB patients was significantly increased after 12 months of tenofovir therapy when compared with baseline. The expression levels of CD16+/CD56+CD3- and NKG2A+/CD56+CD3- cells were also affected by tenofovir treatment. In addition, there was a positive correlation between the proportion of NK(CD56+CD3-) cells and HBV DNA (log copies/ml) in CHB patients.

• Clinical and Experimental Reproductive Medicine
• /
• 제35권2호
• /
• pp.119-129
• /
• 2008

목 적: 말초혈액 $CD56^+$ 자연살해세포 (natural killer cell)이 증가되어 있는 반복유산 환자들의 탈락막 $CD56^+/CD16^+$ 자연살해세포의 분포를 확인하고 말초혈액자연살해세포의 발현양상과 상관관계가 있는지 확인해 보고자 한다. 연구방법: 반복유산 환자 중 계류유산이 되어 자궁경부확장배출술과 배아 염색체검사를 시행하였던 환자 가운데 배아 염색체검사가 정상이고 말초혈액에서 자연살해세포 중 $CD56^+$ 자연살해세포가 증가된 환자들 29명을 대상으로 연구하였으며, 대조군으로는 배아 염색체검사가 비정상인 32명을 선택하였다. 이 환자들의 검체에서 착상부위를 포함한 자궁 탈락막세포를 확인하여 면역조직화학염색을 통해 $CD56^+$와 $CD16^+$ 자연살해세포의 분포를 확인하였다. 면역조직화학염색은 score와 백분율을 구하여 평가하였다. 결 과: 연구군과 대조군의 탈락막조직 $CD56^+$ 자연살해세포 score ($43.6{\pm}24.5$ vs. $23.9{\pm}16.3$ P =0.001)와 $CD56^+$ NK cell percentage ($42.1{\pm}11.7$ vs. $33.9{\pm}15.8$ P =0.027)는 유의한 차이가 있었다. 그러나 탈락막조직 $CD16^+$ NK cell score ($18.7{\pm}9.5$ vs. $13.2{\pm}39.4$ P =0.108)와 $CD16^+$ 자연살해세포 percentage ($24.7{\pm}5.9$ vs. $23.4{\pm}11.7$ P =0.599)는 통계학적으로 유의한 차이가 없었다. 말초혈액자연살해세포가 증가되어 있는 환자군에서 탈락막자연살해세포의 score와 말초혈액자연살해 세포의 백분율간에 직접적인 상관관계는 없었다 (peripheral $CD56^+$ NK cell percentage vs. decidual $CD56^+$ NK cell score, r=-0.016, P =0.932, peripheral $CD16^+$ NK cell percentage vs. decidual $CD16^+$ NK cell score, r=0.008, P =0.968). 결 론: 본 연구에서는 말초혈액 CD56^+ 자연살해세포가 증가되어 있는 반복유산 환자의 계류유산된 조직에서 탈락막 $CD56^+$ 자연살해세포가 증가되어 있다는 것을 보여 주었다. 또한 탈락막자연살해세포와 말초혈액자연살해세포의 증가 양상에서는 직접적인 상관관계는 없었다. 이는 탈락막자연살해세포가 반복유산의 면역학적인 기전에서 중요한 역할을 할 것이라는 가능성을 제시하여 준다.

• Asian Pacific Journal of Cancer Prevention
• /
• 제15권8호
• /
• pp.3757-3761
• /
• 2014

Purpose: The aim of this study was to investigate the prognostic significance of the CD56+NK-TIL count in infiltrating ductal carcinoma (IDC) of breast. Material and Methods: Immunohistochemistry (IHC) was performed using antibodies specific for CD56 on formalin-fixed and paraffin-embedded tissue sections of 175 infiltrating ductal carcinomas (IDC) of breast. Distribution of intratumoral and stromal CD56+NK-TILs was assessed semi-quantitatively. Results: A low intratumoral CD56+count showed significant and inverse associations with tumor grade, stage, and lymph node status, whereas it had significant and direct association with response to treatment indicating good prognosis. These patients had better survival (${\chi}^2$=4.80, p<0.05) and 0.52 fold lower death rate (HR=0.52, 95% CI=0.28-0.93) as compared to patients with high CD56+ intratumoral count. The association of survival was insignificant with low CD56 stromal count as compared to high CD56 stromal count (${\chi}^2$=1.60, p>0.05). Conclusion: To conclude, although NK-TIL count appeared as a significant predictor of prognosis, it alone may not be sufficient for predicting the outcome considering the fact that there exists a crosstalk between NK-TILs and the other immune infiltrating TILs.

• The Korean Journal of Pain
• /
• 제31권1호
• /
• pp.43-49
• /
• 2018

Background: Chronic pain reportedly exerts complex effects on immune function. Natural killer (NK) cells are lymphocytes that play a critical role in cellular and innate immunity. This study examined changes in the subset populations and cytotoxic activity of peripheral blood NK cells in patients with chronic pain. Methods: Thirty patients with chronic moderate-to-severe pain (group P) and age-matched pain-free subjects (group NoP) were enrolled. Peripheral whole blood was analyzed for the percentage and expression of NK cell surface markers (CD56 and CD16) by flow cytometry. Cytotoxic activity was assayed by evaluating CD69 expression on $CD3^-/CD56^+NK$ cells. Results: The percentage of NK cells among total lymphocytes was not significantly different between groups P and NoP ($16.3{\pm}9.3$ vs. $20.2{\pm}10.5%$). Likewise, the percentages of two major NK cell subsets, $CD56^{bright}$ and $CD56^{dim}$, were also not significantly different between the two groups. However, the percentage of $CD56^{bright}/CD16^+$ subset, was slightly but significantly increased in group P ($1.0{\pm}0.9%$; P< 0.01) compared with group NoP ($0.5{\pm}0.6%$). The cytotoxicity of NK cells was not different between the two groups, showing similar CD69 expression (P vs. $NoP=29.2{\pm}15.2$ vs. $32.0{\pm}15.0%$). These findings were not influenced by pain intensity, opioid use, or disease causing pain in group P. Conclusions: NK cell cytotoxic activity and major subset populations, with the exception of an increased percentage of the $CD56^{bright}/CD16^+$ subset, are not significantly altered in patients with chronic severe pain.

• Clinical and Experimental Reproductive Medicine
• /
• 제36권3호
• /
• pp.199-207
• /
• 2009

목 적: 말초혈액 자연살해세포가 증가된 반복유산 환자군과 증가되지 않은 반복유산 환자군에서 다음 번 유산 시탈락막의 자연살해세포의 발현양상을 관찰하여 말초혈액 자연살해세포와 상관관계가 있는지 보고자 하였다. 연구방법: 말초혈액 자연살해세포가 15% 이상 증가된 반복유산 환자군 14명을 실험군으로, 15% 이하인 군 12명을 대조군으로 하여 연구를 진행하였다. 이 환자들에게서 다음 번 유산 시 착상부위를 포함한 자궁 탈락막 세포를 확인하여 면역조직화학염색을 통해 $CD56^+$와 $CD16^+$ 자연살해세포의 수를 세어 실험군과 대조군을 비교하였다. 결 과: 실험군과 대조군은 탈락막 내 $CD56^+$ 자연살해세포의 수 간에 통계적으로 유의한 차이 ($170.1{\pm}132.1$ vs. $68.3{\pm}66.1$, p=0.02)를 보였으나 둘 간의 상관관계 (r=0.229, p=0.261)는 없었다. 또한 두 군간에 $CD16^+$ 자연살해세포는 통계적으로 유의한 차이 ($25.70{\pm}11.72$ vs. $31.17{\pm}22.67$)를 보이지 않았다. 결 론: 본 연구는 말초혈액 $CD56^+$ 자연살해세포가 증가된 반복유산 환자군에서 말초혈액 자연살해세포가 증가되지 않은 군에 비하여 탈락막의 $CD56^+$ 자연살해세포가 증가되어 있음을 알 수 있었다. 이는 탈락막 자연살해세포가 반복유산의 면역학적 기전에서 중요한 역할을 할 것이라는 가능성을 제시해 주는 연구 결과이며 또한 말초혈액 자연살해세포의 측정이 반복유산 환자에서 다음 번 유산을 예측할 수 있는 유용한 지표임을 알 수 있다.

• IMMUNE NETWORK
• /
• 제5권1호
• /
• pp.11-15
• /
• 2005

Background: Throughtout the last three decades, the therapy of leukemias and lymphoma has set the stage for curative cancer therapy in systemic malignant disease. This was the result of an integrated work of basic reaserch and clinical investigators leading to more aggressive albeit tolerable protocol of chemotherapy and radiotherapy. High dose therapy marks the most elaborated strategies in this field today. However, intensification of conventional therapeutic modalities as mentioned has to be based on new approaches and the exploration of new antineoplastic mechanisms. This insight has resulted in immune therapy of cancer. Among the cells of the immune system, natural killer (NK) cells and T cells are of major interest for the development of therapeutic strategies. Methods: Cytotoxicity to target cells was measured by LDH release method, Characterization of activated lymphocyte was measured by Flow cytometry analysis. Anti-CD3, 16, 56 monoclonal antibody and IL-2 were used for the activation of NK and T cell. The analysis of effect of activated lymphocyte, in vivo, were used by Balb/c nude mouse. Results and Conclusion: Cytotoxicity to K562 cells was significantly higher in the mixture group of NK and T cells than that of a group of activating T cells. The survivors and the rate of reduction of size of tumor craft of nude mouse group treatment with activated lymphocyte was higher than that of the group without treatment with activated lymphocyte. Therefore, this results are suggested that the activated lymphocytes by anti-CD3, CD16 and CD56 can reduce the malignancy effect of lymphoma.

• 약학회지
• /
• 제54권3호
• /
• pp.192-199
• /
• 2010

Colorectal cancer is one of the most common alimentary malignancies. In this study, the antitumor activity of activated human natural killer (NK) cells against human colorectal cancer was evaluated in vivo. Human NK cells are the key contributors of innate immune response and the effective functions of these cells are enhanced by cytokines. Human peripheral blood mononuclear cells (PBMC) were cultured with interleukin-2 (IL-2)-containing medium for 14 days and resulted in enriched NK cell population. The resulting populations of the cells comprised 7% $CD3^+CD4^+$ cells, 25% $CD3^+CD8^+$ cells, 13% $CD3^-CD8^+$ cells, 4% $CD3^+$CD16/$CD56^+$ cells, 39% $CD3^+$CD16/$CD56^-$ cells, and 52% $CD3^-$CD16/$CD56^+$ cells. Tumor necrosis factor alpha (TNF-$\alpha$), interferon gamma (IFN-$\gamma$), IL-2, IL-4, and IL-5 transcripts of the activated NK cells were confirmed by RT-PCR. In addition, activated NK cells at doses of 2.5, 5 and 10 million cells per mouse inhibited 10%, 34% and 47% of SW620-induced tumor growth in nude mouse xenograft assays, respectively. This study suggests that NK cell-based immunotherapy may be used as an adoptive immunotherapy for colorectal cancer patients.

• 한국콘텐츠학회:학술대회논문집
• /
• 한국콘텐츠학회 2010년도 춘계 종합학술대회 논문집
• /
• pp.173-175
• /
• 2010

본 연구는 VO2max 70%의 고강도 유산소운동을 통해 각각 300kcal와 600kcal를 소비하는 시점에서 유발되는 면역세포 반응을 분석함으로써 운동량에 따라 어떠한 상이한 영향을 미치고, 인체 면역세포의 긍정적 변화와 면역력 강화를 위한 적정 칼로리 소비량을 구명하고자 남자 대학생 8명을 대상으로 면역반응 T cell(CD3), B cell(CD19), NK cell(CD16+CD56)을 SPSS Ver. 18.0 프로그램을 이용, one-way ANOVA, 사후검증은 Turkey HSD를 통해 분석한 결과, T cell(CD3)에서 운동전보다 운동량이 많아질수록 감소하였으며, 600kcal를 소비하였을때, 5% 수준에서 통계적으로 유의한 차이가 있는 것으로 나타났다. B cell(CD19)에서는 운동 전보다 운동량이 많을수록 감소하였으며, 유의한 차이는 보이지 않았다. NK cell(CD16+CD56)에서 운동 전보다 운동량이 많을수록 증가하였으며, 특히 600kcal를 소비하였을 때, 5% 수준에서 통계적으로 유의한 차이가 있는 것으로 나타났다.