13 research outputs found

    Wnt μ‹ ν˜Έμ— μ˜ν•œ 인간 Th17 세포 λΆ„ν™” 쑰절 및 NKT 세포 λ¦¬κ°„λ“œμ˜ λΉ„κ°• λ°±μ‹  adjuvant ν™œμš© 연ꡬ

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    Wnt/Ξ²-catenin μ‹ ν˜ΈλŠ” 초기 λ°°λ°œμƒ, μ’…μ–‘ ν˜•μ„± λ“±μ˜ κ³Όμ • λ™μ•ˆ μ€‘μš”ν•œ 역할을 ν•˜λ©°, T μ„Έν¬μ—μ„œλŠ” Th2 μ„Έν¬λ‘œμ˜ λΆ„ν™”λ₯Ό μ΄‰μ§„ν•œλ‹€. κ·ΈλŸ¬λ‚˜ 인간 Th17 μ„Έν¬μ˜ 뢄화와 μœ μ§€μ— μžˆμ–΄ Wnt μ‹ ν˜Έμ˜ 역할은 μ•„μ§κΉŒμ§€ λͺ…ν™•ν•˜μ§€ μ•Šλ‹€. λ³Έ μ—°κ΅¬μ—μ„œλŠ” 퇴행성 κ΄€μ ˆμ—Ό ν™˜μžμ™€ λΉ„κ΅ν•˜μ—¬ λ₯˜λ§ˆν‹°μŠ€ κ΄€μ ˆμ—Ό ν™˜μžμ˜ κ΄€μ ˆ ν™œμ•‘μ—μ„œ IL-17이 μ¦κ°€λ˜μ–΄ 있으며, μ΄λŠ” Wnt/Ξ²-catenin 경둜의 μ–΅μ œμ œμΈ sFRP1λ†λ„μ˜ 증가와 상관관계가 μžˆμŒμ„ κ΄€μ°°ν•˜μ˜€λ‹€. T 세포 수용체λ₯Ό 맀개둜 ν•œ μžκ·Ήμ‹œμ— sFRP1의 μ²¨κ°€λŠ” naΓ―ve CD4+와 memory T 세포에 μ˜ν•œ IL-17 생산을 ν˜„μ €νžˆ μ¦κ°€μ‹œμΌ°λ‹€. λ”μš±μ΄ Th17 λΆ„ν™” μ‘°κ±΄μ—μ„œλŠ”, sFRP1 첨가가 TGF-β에 λŒ€ν•œ μš”κ΅¬λ₯Ό ν˜„μ €νžˆ κ°μ†Œμ‹œμΌ°λ‹€. λ©”μ»€λ‹ˆμ¦˜μ μœΌλ‘œ, sFRP1은 TGF-Ξ² μžκ·Ήμ‹œ CD4+ T μ„Έν¬μ—μ„œ Smad2/3의 인산화λ₯Ό μ¦κ°€μ‹œμΌ°μœΌλ©°, TGF-Ξ² μ‹ ν˜Έμ˜ μ–΅μ œλŠ” sFRP1의 Th17 촉진 ν™œμ„±μ„ μ‚¬λΌμ§€κ²Œ ν•˜μ˜€λ‹€. μ’…ν•©μ μœΌλ‘œ 이번 연ꡬ κ²°κ³ΌλŠ” 인간 Th17 세포 λΆ„ν™”μ˜ κ°•λ ₯ν•œ μœ λ„μ œλ‘œμ„œ sFRP1의 κ³ μœ ν•œ κΈ°λŠ₯을 λ³΄μ—¬μ£Όμ—ˆλ‹€. λ”°λΌμ„œ sFRP1은 μΈκ°„μ—μ„œ Th17세포λ₯Ό 맀개둜 ν•˜λŠ” μ§ˆν™˜μ˜ μΉ˜λ£Œμ— μœ λ§ν•œ ν‘œμ μ΄ 될 μˆ˜λ„ μžˆμ„ κ²ƒμœΌλ‘œ κΈ°λŒ€λœλ‹€. Ξ±-galactosylceramide (Ξ±-GalCer)λŠ” μ•ˆμ „ν•˜κ³  효과적인 λΉ„κ°• λ°±μ‹  adjuvant둜 μ•”κ³Ό λ°”μ΄λŸ¬μŠ€ 감염에 λŒ€ν•œ 효과적인 λ°©μ–΄λ©΄μ—­λ°˜μ‘μ„ μœ λ„ν•œλ‹€. λ³Έ μ—°κ΅¬μ—μ„œλŠ” CD1d/λ‹Ήμ§€μ§ˆ ꡬ쑰에 κ·Όκ±°ν•˜μ—¬ 가지ꡬ쑰λ₯Ό ν¬ν•¨ν•˜λ„λ‘ μ„€κ³„λœ 두 가지 Ξ±-GalCer μœ λ„μ²΄λ“€, KBC-007κ³Ό KBC-009의 λΉ„κ°• 독감 λ°±μ‹  adjuvantλ‘œμ„œμ˜ 효과λ₯Ό ν‰κ°€ν•˜μ˜€λ‹€. 이듀 μœ λ„μ²΄λ“€μ€ Ξ±-GalCer보닀 μš©ν•΄λ„κ°€ κ°œμ„ λ˜μ—ˆμœΌλ©° λ§ˆμš°μŠ€μ™€ μΈκ°„μ˜ μžμ—°μ‚΄ν•΄ T 세포λ₯Ό κ°•ν•˜κ²Œ μžκ·Ήν•˜μ˜€λ‹€. in vivo 혈청 사이토카인 뢄석 κ²°κ³Ό μ„œλ‘œ λ‹€λ₯Έ 사이토카인 λΆ„λΉ„ ν”„λ‘œν•„μ„ μœ λ„ν•˜μ—¬, KBC-009λŠ” Th1/Th2 사이토카인을 λͺ¨λ‘ μœ λ„ν•œ 반면 KBC-007은 Th2둜 편ν–₯된 사이토카인 λ°˜μ‘μ„ μœ λ„ν•˜μ˜€λ‹€. λΆˆν™œμ„±ν™”λœ 독감 λ°”μ΄λŸ¬μŠ€ A/PR/8/34 (PR8)와 ν•¨κ»˜ Ξ±-GalCer μœ λ„μ²΄λ₯Ό 단일 νˆ¬μ—¬λ‘œ λ©΄μ—­ν™”ν•˜μ˜€μ„ λ•Œ μ „μ‹ κ³Ό μ λ§‰λΆ€μœ„μ—μ„œ 항원 특이적인 체앑성과 세포성 λ©΄μ—­ λ°˜μ‘μ΄ κ°•ν™”λ˜μ—ˆλ‹€. 특히, KBC-009λŠ” λΆˆν™œμ„±ν™”λœ PR8 단독 면역화와 λΉ„κ΅ν•˜μ—¬ ν˜„μ €νžˆ μ¦κ°€λœ μ „μ‹  IgG와 점막 IgA 항체 역가와 세포 독성 T 세포 생성을 μœ λ„ν•˜λŠ” λ“± κ°•ν•œ adjuvant ν™œμ„±μ„ λ‚˜νƒ€λ‚΄μ—ˆλ‹€. 이와 λŒ€μ‘°μ μœΌλ‘œ KBC-007의 μ²¨κ°€λŠ” PR8 특이적인 λ©΄μ—­ λ°˜μ‘μ„ λ―Έλ―Έν•˜κ²Œ μ¦κ°€μ‹œμΌ°λ‹€. λ°”μ΄λŸ¬μŠ€ 감염에 λŒ€ν•œ KBC-009의 λ°©μ–΄ νš¨κ³ΌλŠ” Ξ±-GalCer의 κ²½μš°μ™€ μœ μ‚¬ν•˜μ˜€λ‹€. 이λ₯Ό ν†΅ν•˜μ—¬ 가지ꡬ쑰λ₯Ό ν¬ν•¨ν•œ Ξ±-GalCer μœ λ„μ²΄κ°€ 독감 λ°”μ΄λŸ¬μŠ€ 감염에 λŒ€ν•œ λ°©μ–΄ λ©΄μ—­ λ°˜μ‘μ„ μœ λ„ν•  수 μžˆλŠ” 효과적인 점막 adjuvant둜 μ‚¬μš©λ  수 μžˆλ‹€λŠ” 것을 ν™•μΈν•˜μ˜€λ‹€.Wnt/Ξ²-catenin signaling plays a crucial role during embryogenesis and tumorigenesis and in T cells, promotes the differentiation of Th2 cells. However, the role of Wnt signals in the differentiation and maintenance of human Th17 cells remains poorly understood. We found that the higher levels of IL-17 in the synovial fluid of rheumatoid arthritis (RA) patients compared to osteoarthritis (OA) patients were associated with a higher concentration of sFRP1, an inhibitor of the Wnt/Ξ²-catenin pathway. The addition of sFRP1 during TCR-mediated stimulation induced a significant increase in IL-17 production by both naive CD4+ and memory T cells. Moreover, under Th17-differentiation conditions, the addition of sFRP1 significantly reduced the requirement for TGF- Ξ². Mechanistically, we observed that sFRP1 significantly enhanced the phosphorylation of Smad2/3 in CD4+ T cells upon TGF- Ξ² stimulation and that blocking TGF-Ξ² signaling abolished the Th17-promoting activity of sFRP1. Our findings reveal a novel function for sFRP1 as a potent inducer of human Th17 cell differentiation. Consequently, sFRP1 may represent a promising target for the treatment of Th17-mediated disease in humans. Ξ±-Galactosylceramide (Ξ±-GalCer) is a safe and effective adjuvant for nasal vaccines and induces protective immune responses against tumors and viral infections. In our previous study, the fatty acyl chains of Ξ±-GalCer were modified based on the CD1d/glycolipid structure to generate Ξ±-GalCer analogues with branched acyl chains. In this study, two Ξ±-GalCer analogues, KBC-007 and KBC-009, that have different branched chain lengths were prepared and evaluated for their efficacy as nasal influenza vaccine adjuvants. These analogues displayed improved solubility over Ξ±-GalCer and potently stimulated NKT cells in both murine and in vitro human systems. Examination of serum cytokines in vivo revealed that these analogues elicited different cytokine release profiles compared to Ξ±-GalCer. KBC-009 induced both Th1/Th2 cytokines, whereas KBC-007 induced a more Th2-polarized cytokine response with diminished IFN-Ξ³ production. We found that a single immunization of inactivated influenza virus A/PR/8/34 (PR8) combined with Ξ±-GalCer analogues enhanced PR8-specific humoral and cellular immune responses in both systemic and mucosal compartments. Notably, KBC-009 exhibited potent adjuvant effects, inducing significantly higher systemic IgG and mucosal IgA antibody titers and enhancing cytotoxic T lymphocyte generation when compared to immunization with inactivated PR8 alone. In contrast, addition of KBC-007 to inactivated PR8 only marginally increased PR8-specific immune responses. The protective effect of KBC-009 against challenge infection was comparable to the effect produced by Ξ±-GalCer. These results suggest that an Ξ±-GalCer analogue with a branched acyl chain could be used as an effective mucosal adjuvant for the induction of protective immune responses against influenza virus infection.Docto

    ν•œκ΅­ μ—λ„ˆμ§€ μ‚°μ—…μ˜ 전망과 λ―Έλž˜μ „λž΅

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    Thesis(master`s)--μ„œμšΈλŒ€ν•™κ΅ κ²½μ˜μ „λ¬ΈλŒ€ν•™μ› :κ²½μ˜ν•™κ³Ό Global MBA전곡,2007.8Maste

    A study for the application of the replicated crossover designs to the assessment of bioequivalence 생물학적 동등성 평가에 μžˆμ–΄μ„œ 반볡 κ΅μ°¨μ‹œν—˜λ²•μ˜ ν™œμš©μ— κ΄€ν•œ 연ꡬ

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    Thesis (master`s)--μ„œμšΈλŒ€ν•™κ΅ λ³΄κ±΄λŒ€ν•™μ› :보건학과,1999.Maste

    Interpreting the Cultural Symbol of a Picture Book "The Good Siblings"

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