• 제목/요약/키워드: CD8 T lymphocytes

검색결과 168건 처리시간 0.026초

Generation of Renal Cell Carcinoma-specific CD4+/CD8+ T Cells Restricted by an HLA-39 from a RCC Patient Vaccinated with GM-CSF Gene-Transduced Tumor Cells

  • Jun, Do Youn;Moutner, Joseph;Jaffee, Elizabeth
    • IMMUNE NETWORK
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    • 제3권2호
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    • pp.96-102
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    • 2003
  • Background: Granulocyte-macrophage colony-stimulating factor (GM-CSF) gene-transduced tumor cell vaccines induce very potent systemic anti-tumor immunity in preclinical and clinical models. Our previous phase I clinical trial in patients with metastatic renal cell carcinoma (RCC) has demonstrated both immune cell infiltration at vaccine sites and T cell-mediated delayed-type hypersensitivity (DTH) response to whole tumor cell vaccines. Methods: To investigate the immune responses to autologous genetically- modified tumor cell vaccines, tumor-specific $CD8^+$ T cell lines were generated from peripheral blood lymphocytes (PBL) of a RCC patient 1.24 by repeated in vitro stimulation with either B7.1-transduced autologous RCC tumor cells or B7.1-transduced autologous tumor cells treated with interferon gamma ($IFN{\gamma}$), and cloned by limiting dilution. Results: Among several RCC-specific cytotoxic T lymphocytes (CTLs), a $CD4^+/CD8^+$ double positive T cell clone (17/A2) appeared to recognize $IFN{\gamma}$-treated autologous RCC restricted by HLA-B39. The 17/A2 also recognized other HLA-B39 positive RCC tumor cells after $IFN{\gamma}$ treatment. Conclusion: These results demonstrate that autologous RCC vaccination successfully generates the tumor-specific CTL 17/A2, and suggest that the presentation and recognition of the tumor antigen by the 17/A2 might be upregulated by $IFN{\gamma}$.

Different Pattern of p27kip1 and p21cip1 Expression Following Ex Vivo Activation of CD8+ T Lymphocytes

  • Kim, Sung-Jin;Lee, Hyeon-Woo
    • Biomolecules & Therapeutics
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    • 제15권4호
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    • pp.218-223
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    • 2007
  • T cell proliferation is a pivotal to an effective immune response. Cyclin-dependent kinase (cdk) inhibitor, $p27^{kip1}$ is degraded to initiate T cell expansion. In this study, we show that although the expression of $p27^{kip1}$ protein was down-regulated, that of $p21^{cip1}$, another cdk inhibitor, was up-regulated in $CD8^+$ T cells following in vitro stimulation. Ex vivo gB antigen-stimulation following HSV immunization increased $p21^{cip1}$ positive cells that co-expressed IFN-$\gamma$. Moreover, $p21^{cip1}$ was co-expressed with IFN-${\gamma}$ in E7 antigen-stimulated $CD8^+$ T cells, whereas $p27^{kip1}$ was not. Our findings imply a role of $p21^{cip1}$ proteins in antigen-induced effector $CD8^+$ T cells differentiation in vivo.

폐흡충(Paragonimus westermani) 감염이 흰쥐의 IgE 생성 및 비장림프구 아군분포에 미치는 영향 (Changes of IgE production, splenic helper and suppressor T lymphocytes in mice infected with Paragonimus westermani)

  • 민득영;류재숙;신명헌
    • Parasites, Hosts and Diseases
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    • 제31권3호
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    • pp.231-238
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    • 1993
  • 폐흡충 피낭유충을 BALB/c 마우스에 경구 감염시킨 후 마우스를 시기별(3일, 1주, 2주, 3주, 4주, 5주, 7주, 9주, 13주 및 23주)로 희생시켜 말초혈액내 호산구수와 혈청내 IgE 항체가를 측정하는 한편 비장 림프구를 분리하여 림프구 아군(helper T, cytotoxic / suppressor T, pan T)에 대한 단세포군 항체를 결합시켜 EPICS C fluorocytometer로 분석하였다. 폐흡충에 대한 혈청내 총 IgE 항체가는 감염 3주부터 증가되어 감염 4주에 높게 증가되었으며 13주 이후 23주까지 높은 항체가가 유지되었다. 말초혈액내 호산구수는 감염 2주 부터 증가되어 감염 9주에 $664.1/\textrm{mm}^3$으로 가장 증가 되었으며 그 이후에는 감소하여 23주에는 정상보다 약간 증가되었다. 폐흡충을 감염시키고 감염 3일, 1주, 2주, 3주, 4주, 7주 및 23주에 T 림프구 아군을 분석한 결과 L3T4 helper T 림프구와 Lyt-2 cytotoxic / suppressor T 림프구의 비율은 감염 군에서 감염 초기에 대조군에 비해 약간 감소된 경향을 보였으나 대조군과 유의한 차이를 보이지 않았다. Thy 1.2 pan T 림프구의 비율은 감염 2주와 4주에 대조군에 비해 유의하게 감소되었고(P<0.05) 7주 이후에는 대조군과 비슷하였다. 이러한 결과들로 보아 마우스의 폐흡충감염에서 특이 항원이나 마이토젠의 자극이 없이는 비장킬프구의 아군분포에 큰 변화가 없는 것으로 생각된다. 생각된다.

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분자 추출물을 돼지의 비장 면역세포에 처리시 cDNA Microarray를 이용한 유전자 발현분석 (cDNA Microarray Analysis of Gene Expression in Pig Spleen Lymphocytes in Response to Extract of Raspberry)

  • 정정수;최영숙;임희경;오윤길;;최강덕
    • Journal of Animal Science and Technology
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    • 제50권6호
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    • pp.849-856
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    • 2008
  • 본 연구에서는 복분자(라즈베리)의 돼지 비장 임파구에 대한 면역 반응을 조사하였다. 복분자의 70% 에틸 알코올 추출물을 돼지 비장 임파구에 처리하였다. 복분자의 추출물은 비장 면역세포의 증식을 촉진하였으며, 복분자(라즈베리)의 추출물은 돼지 비장 임파구에 대해 CD3-T 세포, CD4-T 세포와 B 세포의 구성분을 증가시켰다. 복분자 추출물은 비장 임파구 세포의 활력을 증가시킴으로써 면역반응을 향상시켰다. 본 연구에서 우리는 돼지 비장세포에 복분자 추출물을 처리한 결과 8개의 유전자 발현이 증가되었음을 확인했는데, 이들 중에는 세포구조와 면역반응에 관여하는 유전자가 포함되었다. 특히 microtubule-associated protein 4, cytoplasmic dynein heavy chain, tumor necrosis factor alpha, 및 lymphotoxin-beta receptor precursor 유전자 발현이 증가되었다. 한편 10개의 유전자는 복분자 추출물에 의해 그 발현이 감소되었다.

결핵환자에서 말초혈액과 흉막액내 ${\gamma}{\delta}$ T 림프구의 의의 (The Clinical Significance of ${\gamma}{\delta}$ T lymphocytes in patients with pleural tuberculosis)

  • 송광선;신계철;김도훈;홍애라;김희선;용석중
    • Tuberculosis and Respiratory Diseases
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    • 제44권1호
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    • pp.44-51
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    • 1997
  • 연구배경 : 최근 알려진 ${\gamma}{\delta}$ 수용체는 결핵균 감염의 초기에 제2형 주요 조직적합성 복합계(MHC class II)의 인식없이 결핵균 항원에 반응하여 세포성 면역반응을 나타냄이 보고되었다. 이에 연구자등은 페결핵환자와 결핵성 흉막염 환자, 그리고 다른 원인의 흉막염 환자사이에 T 림프구의 조성과 ${\gamma}{\delta}$ T-림프구 수의 차이를 관찰하였다. 방법 : 대상은 폐결핵환자 30예(이중 결핵성 흉막염환자 15예), 폐암 환자 12예(이중 악성 흉막염 환자 9예), 폐렴 7예(이중 폐렴성 흉막염 6예)등 모두 49예였다. 혈청 ADA(adenosine deaminase)활성도는 Hitachi 747 자동화학분석기에서 측정하였다. T 세포 림프구 아형의 분류는 lysed whole blood method로 anti-Leu4, anti-Leu3a, anti-Leu2a, anti HLA-DR 그리고 anti-TCR-${\gamma}{\delta}$-1를 이용하여 flow cytometer로 분석하였다. 결과 : 1. 말초혈액내 ${\gamma}{\delta}$-T 림프구의 평균치는 $4.8{\pm}4.6%$ 였고, 결핵군(29예) $5.5{\pm}4.5%$, 비결핵군(14예) $3.3{\pm}2.9%$(폐암군 $4.0{\pm}3.2%$, 폐렴군 $2.2{\pm}1.6%$로 유의한 차이는 없었다(p=0.24). 질병의 이환기간 1개월 이내의 환자중에서도 결핵군(20예) $6.4{\pm}6.6%$, 비결핵군(14예) $3.3{\pm}2.9%$ 으로 유의한 차이는 없었다(p=0.16)(Table 1). 2. 흉막액내 T 세포 림프구 아형중 CD4 림프구는 결핵성 흉막액에서는 $54.6{\pm}13.8%$, 비결핵성 흉막액에서는 $36.2{\pm}25.3%$(악성 흉막액 $38.4{\pm}23.8%$, 폐렴정 흉막액 $30.1{\pm}34.0%$ 결핵성 흉막액에서 의의있게 높았다(p=0.04)(Table 2). 3. 흉막염이 있던 환자에서 말초혈액내 ${\gamma}{\delta}$-T 림프구는 결핵성 흉막염군(14예)이 $7.0{\pm}9.0%$, 비결핵성 흉막염군(11예) $3.0{\pm}2.0%$ (악성 흉막염군 $3.1{\pm}2.2%$, 폐렴성 흉막염군 $2.7{\pm}1.7%$로 차이는 없었다(p=0.16). 흉막액내 ${\gamma}{\delta}$-T 림프구는 결핵성 흉막염군(15예)이 $3.9{\pm}2.9%$, 비결핵성 흉막염군(10예) $2.1{\pm}2.2%$(악성 흉막염군 $2.0{\pm}2.5%$, 폐렴성 흉막염군 $2.4{\pm}1.7%$ 로 유의한 차이가 없었다(p=0.12). 4. 환자의 연령이나 성별과 말초혈액내 ${\gamma}{\delta}$-T 림프구수와는 상관관계가 없었고, 폐결핵 환자에서 병변의 정도, 혈청 및 흉막액내 ADA와 ${\gamma}{\delta}$-T 림프구수와도 상관관계가 없었다. 결론 : 결핵성 흉막염환자에서 말초혈액 및 흉막액내 ${\gamma}{\delta}$-T 림프구수의 유의한 증가는 없어 다른 질환과의 감별진단에 도움이 되지 못할 것으로 생각되며, ${\gamma}{\delta}$-T 림프구의 증가는 결핵 초기 환자들을 대상으로 추가 연구가 필요할 것으로 생각된다.

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가미청금항화탕 및 가미육미지황탕이 Allergy 천식 모델 흰쥐의 BALF내 면역세포 및 혈청 IgE에 미치는 영향 (The Effects of Gamichunggumgangwha-tang (Jiaweiqingjinjianghuo-tang) and Gamiyukmigiwhang-tang (Jiaweiliuweidihuang-tang) on Immune Cell & Serum OA-specific IgE in BALF in a Rat Asthma Model)

  • 조영민;정희재;정승기;이형구
    • 대한한의학회지
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    • 제24권3호
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    • pp.1-10
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    • 2003
  • Background : Asthma is a chronic inflammatory disorder under immunological influence. Gamichunggumgangwha-tang (CG, Jiaweiqingjinjianghuo-tang) and Gamiyukmigiwhang-tang (YM, Jiaweiliuweidihuang-tang) are herbal tonics for asthma from traditional herbal medicine. Objective : To evaluate the effect of CG and YM on immune cell & serum OA-specific IgE in broncho-alveolar lavage fluid (BALF) in a rat asthma model. Materials and Methods : Rats were sensitized with OA; at day I sensitized group and CG and YM groups were systemically immunized by subcutaneous injection of 1mg OA and 300mg of Al(OH)3 in a total volume of 2ml. At the same time, 1 ml of 0.9% saline containing $6{\times}10^9$ B. pertussis bacilli was injected by Lp. 14 days after the systemic immunization, rats received local immunization by inhaling 0.9% saline aerosol containing 2% (wt/vol) OA. A day after local immunization, BALF was collected from the rats. Rats were orally administered with each of CG and YM extract for 14 days since the day after local immunization. Lymphocyte, CD4+ T cell and CD8+ T cell counts, CD4+/CD8+ ratio in BALF, change of serum OA-specific IgE level, CD4+ T cell and CD8+ T cell percentages in the peripheral blood were measured and evaluated. Results : CG and YM showed an alleviating effect on asthmatic responses of rats. CG decreased total cell, lymphocyte, CD4+ T cells in BALF, and serum OA-specific IgE level as compared with the control group. YM decreased lymphocytes as compared with the control group. CD4+/CD8+ ratio in BALF from the CG and YM groups and serum OA-specific IgE level from the YM group didn't show any significant variation from the control group. Conclusion : CG alleviated asthmatic hyperreactivity of the immune system through CD4+ T cells and serum IgE. Further the study of this immune system modulating mechanism is expected.

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CD3+/CD4+/CD5+/CD8+/CD21+/CD34-/CD45-/CD79a-/TCRαβ+/TCRγδ-/MHCII+ T-zone lymphoma in a dog with generalized lymphadenopathy: a case report

  • Shin, Sun Woo;Lim, Yu jin;Bae, Hyeona;Kim, Jihu;Cho, ARom;Park, Jinho;Lee, Dongbin;Jung, Dong-In;Kim, Sang-ki;Yu, DoHyeon
    • 대한수의학회지
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    • 제61권3호
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    • pp.21.1-21.6
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    • 2021
  • Canine T-zone lymphoma (TZL) is a mature T-cell lymphoma in dogs. The diagnosis and sub-classification are impossible without biopsy or immunophenotyping by flow cytometry. An 11-year-old, spayed, female Golden Retriever presented with lymph node enlargement. Clinical examination was consistent with canine multicentric lymphoma. However, immunophenotyping revealed positive for CD3, CD4, CD5, CD8, CD21, TCRαβ, and MHCII but negative for CD34, CD45, CD79a, and TCRγδ. Histopathology revealed lymphocytes expanding to the cortex-preserving architecture and thinning of the nodal capsule, and CD3 positive but PAX-5 negative. Owing to the indolent nature of TZL, careful monitoring approach without clinical intervention was utilized.

Macrophage Inflammatory Protein $1{\alpha}$가 T세포성장 및 CD4, CD8 발현에 미치는 영향 (EFFECTS OF MACROPHAGE INFLAMMATORY $PROTEIN-1{\alpha}$ON THE T CELL PROLIFERATION AND THE EXPRESSION OF CD4 AND CD8)

  • 최종선;김오환
    • Maxillofacial Plastic and Reconstructive Surgery
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    • 제18권1호
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    • pp.153-163
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    • 1996
  • Macrophage inflammatory protein $(MIP)-1{\alpha}$ is a cytokine which produces wide range of bioactivities such as proinflammatory, immunomodulatory, and hematopoietic modulatory actions. To determine whether $MIP-1{\alpha}$ acts as a negative regulator on the functions of lymphocyte, $[^3H]$-thymidine incorporation test and flow cytometric analysis were performed by using human tonsil T cell, human peripheral blood T cell, and murine cytolytic T lymphocyte (CTL) line CTLL-2, The results were as follow. 1. When human tonsil T lymphocytes were stimulated with anti-CD3 monoclonal antibody (mAb), rate of T cell proliferation was about four times increased. 200ng/ml of $MIP-1{\alpha}$ inhibited anti-CD3 mAb-mediated T cell growth as much as 60% (P<0.05). 2. The suppression of human peripheral T cell proliferation produced by $MIP-1{\alpha}$ was dramatic, but variable among T cells derived from different individuals $(40%{\sim}90%)$. 3. $MIP-1{\alpha}$inhibited the proliferation of murine CTL line CTLL-2 as much as 75%(P<0.001). 4. When the $MIP-1{\alpha}$ was added to human peripheral T cell, cell proporation of $CD4^+$ helper T cell and $CD8^+$ CTL were not noticeably affected. The expression level of CD4, not of Cd8, however, was down regulated by $MIP-1{\alpha}$ treatment $(27%{\sim}82%)$.

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Natural Killer and CD8 T Cells Contribute to Protection by Formalin Inactivated Respiratory Syncytial Virus Vaccination under a CD4-Deficient Condition

  • Eun-Ju Ko;Youri Lee;Young-Tae Lee;Hye Suk Hwang;Yoonsuh Park;Ki-Hye Kim;Sang-Moo Kang
    • IMMUNE NETWORK
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    • 제20권6호
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    • pp.51.1-51.17
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    • 2020
  • Respiratory syncytial virus (RSV) causes severe pulmonary disease in infants, young children, and the elderly. Formalin inactivated RSV (FI-RSV) vaccine trials failed due to vaccine enhanced respiratory disease, but the underlying immune mechanisms remain not fully understood. In this study, we have used wild type C57BL/6 and CD4 knockout (CD4KO) mouse models to better understand the roles of the CD4 T cells and cellular mechanisms responsible for enhanced respiratory disease after FI-RSV vaccination and RSV infection. Less eosinophil infiltration and lower pro-inflammatory cytokine production were observed in FI-RSV vaccinated CD4KO mice after RSV infection compared to FI-RSV vaccinated C57BL/6 mice. NK cells and cytokine-producing CD8 T cells were recruited at high levels in the airways of CD4KO mice, correlating with reduced respiratory disease. Depletion studies provided evidence that virus control was primarily mediated by NK cells whereas CD8 T cells contributed to IFN-γ production and less eosinophilic lung inflammation. This study demonstrated the differential roles of effector CD4 and CD8 T cells as well as NK cells, in networking with other inflammatory infiltrates in RSV disease in immune competent and CD4-deficient condition.

갑상선 종양에 있어서 말초형 림프구의 Purine Nucleoside Phosphorylase (PNP) 활성과 T 세포 아형에 관한 연구 (Purine Nucleoside Phosphorylase (PNP) Activity of Lymphocytes and T Cell Subsets in Peripheral Blood in Thyroid Tumors)

  • 김동수
    • 대한핵의학회지
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    • 제26권1호
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    • pp.1-7
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    • 1992
  • 저자는 1991년 1월부터 동년 8월 사이에 부산대학교 병원 내과 외래에서 임상증상, 이학적 소견 및 각종 검사소견과 병리조직학적으로 진단된 단순 증식성 갑상선종 환자 20예, 갑상선선종 환자 9예 및 갑상선암환자 20예와 건강대조군 11례에서 말초혈 림프구의 PNP활성을 측정하고 $CD4^+$$CD8^+$ 세포를 동시에 검색하여 분석할 성적을 다음과 같이 요약한다. 1) 말초혈 림프구의 PNP 활성은 건강 대조군 및 단순 증식성 갑상선종 보다 갑상선선종 및 암환자에서 의의있게 증가하거나 증가하는 경향이 있었다. 2) 말초혈의 $CD8^+$ 세포 비율은 갑상선암환자에서 건강 대조군, 단순 증식성 갑상선종 및 갑상선선종환자 보다 각각 의의 있게 감소하거나 감소하는 경 향이 있었다. 3) 말초혈의 CD4/CD8비는 갑상선암환자에서 건강 대조군, 단순 증식성 갑상선종 및 갑상선선종환자보다 각각 의의 있게 증가하거나 증가하는 경향이 있었다. 이상의 결과에 의하면 갑상선암환자에서는 말초혈의 억제/세포상해 T 세포의 감소에 의한 세포성 면역능의 이상이 있고, 말초혈 림프구의 PNP활성의 측정은 갑상선종양환자의 면역 상태를 파악하는데 도움이 되는 검사라고 생각된다.

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