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    μžκ°€λ©΄μ—­μ„± κ±΄μ„±μ•ˆ μ₯λͺ¨λΈμ—μ„œμ˜ CD103+ μˆ˜μ§€μƒ μ„Έν¬μ˜ 뢄포 λ³€ν™”

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    ν•™μœ„λ…Όλ¬Έ(석사) -- μ„œμšΈλŒ€ν•™κ΅λŒ€ν•™μ› : μ˜κ³ΌλŒ€ν•™ μ˜ν•™κ³Ό, 2021.8. κΉ€λ―ΈκΈˆ.λͺ©μ : μš°λ¦¬λŠ” λ…Έν™” 및 μžκ°€λ©΄μ—­μ„± κ±΄μ„±μ•ˆ μ₯ λͺ¨λΈμ—μ„œμ˜ νŠΉμ§•μ μΈ ν•­μ›ν‘œμ§€μ„Έν¬μ˜ 뢄포에 λŒ€ν•΄μ„œ μ—°κ΅¬ν•˜κ³ μž 이번 연ꡬλ₯Ό κ³„νš ν•˜μ˜€λ‹€. 방법: λ…Έν™” κ΄€λ ¨ κ±΄μ„±μ•ˆ μ₯λͺ¨λΈλ‘œ C57BL/6 (B6) μ₯λ₯Ό μ„ μ •ν•˜μ˜€κ³ , 8μ£Όλ Ή μ₯λ₯Ό μ–΄λ¦° μ₯, 20κ°œμ›”λ Ήμ„ λ‚˜μ΄λ“  μ₯λ‘œ μ„€μ • ν•˜μ˜€λ‹€. μžκ°€λ©΄μ—­μ„± κ±΄μ„±μ•ˆ μ₯ λͺ¨λΈλ‘œ NOD.B10.H2b μ₯λ₯Ό μ‚¬μš© ν•˜μ˜€κ³ , 5주령을 μ–΄λ¦° μ₯, 24 주령을 λ‚˜μ΄λ“  μ₯λ‘œ μ •ν•˜μ˜€λ‹€. 각 ꡰ은 각막 염색 점수, λˆˆλ¬ΌλΆ„λΉ„λŸ‰μ„ μΈ‘μ • 및 비ꡐ ν•˜μ˜€κ³ , 각막, λˆˆλ¬Όμƒ˜, μž₯간막 λ¦Όν”„μ ˆμ˜ ν•­μ›ν‘œμ§€μ„Έν¬λ„ μœ μ„Έν¬ 뢄석기λ₯Ό ν†΅ν•˜μ—¬ λΆ„μ„ν•˜μ˜€λ‹€. λ˜ν•œ B6 μ₯μ˜ 뢄변을 λͺ¨μ•„μ„œ μž₯λ‚΄ λ§ˆμ΄ν¬λ‘œλ°”μ΄μ˜΄μ˜ ꡬ성도 비ꡐ 뢄석 ν•˜μ˜€λ‹€. κ²°κ³Ό: λͺ¨λ“  κ΅°μ—μ„œ λ‚˜μ΄λ“  μ₯κ°€ κ±΄μ„±μ•ˆ 양상이 μ‹¬ν•΄μ§€λŠ” 것이 κ΄€μ°°λ˜μ—ˆλ‹€. B6 μ₯μ˜ μˆ˜μ§€μƒ 세포 λΆ„μ„μ—μ„œ 각막 CD11b+ μˆ˜μ§€μƒ 세포가 λ‚˜μ΄λ“  μ₯μ—μ„œ μœ μ˜ν•˜κ²Œ μ¦κ°€ν•˜μ˜€κ³  (P<0.05), μž₯간막 CD11b+ μˆ˜μ§€μƒμ„Έν¬μ™€ CD103+CD11b+ μˆ˜μ§€μƒμ„Έν¬κ°€ μœ μ˜ν•˜κ²Œ μ¦κ°€ν•˜μ˜€λ‹€ (P<0.05). NOD μ₯μ—μ„œλŠ” κ°λ§‰μ˜ CD103+CD11b- μˆ˜μ§€μƒμ„Έν¬μ™€ λˆˆλ¬Όμƒ˜μ˜ MHC-IIhi B 세포가 노화에 따라 유의 ν•˜κ²Œ μ¦κ°€ν•˜μ˜€λ‹€. μž₯간막 CD103+CD11b+ μˆ˜μ§€μƒμ„Έν¬, CD103+CD11b- μˆ˜μ§€μƒμ„Έν¬μ™€ MHC-IIhi B 세포도 μœ μ˜ν•˜κ²Œ 노화에 따라 μ¦κ°€ν•œ 양상을 λ³΄μ˜€λ‹€. B6 μ₯μ˜ μž₯λ‚΄ λ§ˆμ΄ν¬λ‘œλ°”μ΄μ˜΄ ꡬ성 λΆ„μ„μ—μ„œ, beta-diversity λΆ„μ„μ—μ„œ genus 와 species 뢄석 μ‹œ μ–‘κ΅°κ°„μ˜ μœ μ˜ν•œ 차이λ₯Ό 확인할 수 μžˆμ—ˆλ‹€. λŒ€ν‘œμ μœΌλ‘œ λ‚˜μ΄λ“  μ₯μ—μ„œ Lachnospiraceae 와 Helicobacteraceae λ₯Ό ν¬ν•¨ν•œ 9개의 κ· μ£Όκ°€ 더 많이 λΆ„ν¬ν–ˆκ³ , μ–΄λ¦° μ₯μ—μ„œλŠ” Lactobacillus λ₯Ό ν¬ν•¨ν•œ 8개의 κ· μ£Όκ°€ 더 많이 뢄포 ν•˜μ˜€λ‹€. κ²°λ‘ : μž₯ κ΄€λ ¨ CD103+CD11b-μˆ˜μ§€μƒμ„Έν¬ 및 MHC-IIhi B μ„Έν¬λŠ” μžκ°€ λ©΄μ—­ κ±΄μ„±μ•ˆ λͺ¨λΈμ—μ„œ λ§Žμ€ 뢄포λ₯Ό 확인 ν•˜μ˜€μ§€λ§Œ, CD103+ DC의 경우 λ…Έν™” κ΄€λ ¨ κ±΄μ„±μ•ˆμ—μ„œλŠ” νŠΉμ§•μ μΈ 뢄포λ₯Ό 확인 ν•  수 μ—†μ—ˆλ‹€.Purpose : We aimed to investigate whether changes in antigen-presenting cell (APC) distributions are distinct in aging-dependent and autoimmune dry eye model. Methods : Corneal staining and tear secretion were evaluated in 8-week- and 20-month-old C57BL/6 (B6) mice and 5-week- and 24-week-old NOD.B10.H2b mice. In the cornea, lacrimal gland (LG), and mesenteric lymph node, MHC-IIhi B cells (CD45+CD11b-CD11c-CD24+MHC-IIhi), CD11b- dendritic cells (DCs) (CD45+CD11b-CD11c+CD24+MHC-IIhi), CD11b+DCs (CD45+CD11b+CD11c+CD24+MHC-IIhi), and CD103+ DCs (CD45+CD11b+/-CD11c+CD103+MHC-IIhi) were compared between young and aged mice. Changes of fecal bacterial genomic 16S rRNA sequences were compared. Results: Corneal staining increased, but tear secretion decreased in both aged mice (P<0.001). In aged B6 mice, the percentage of corneal CD11b+ DCs was higher (P<0.05) than that in young mice. The percentages of mesenteric CD11b+ DCs and CD103+CD11b+ DCs in the aged mice were higher than those in young mice (P<0.05). In aged NOD.B10.H2b mice, the percentages of corneal CD103+CD11b- DCs and MHC-IIhi B cells in the LG were higher than those in young mice (P<0.05). The percentages of mesenteric CD103+CD11b+ DCs, CD103+CD11b- DCs and MHC-IIhi B cells were also higher than those in young mice (P<0.05). Ξ±-diversity increased in aged B6 mice. Ξ²-diversity showed a significant difference between aged and young mice (P<0.05). In the aged B6 mice, nine taxa in the family Lachnospiraceae increased, while eight taxa in the family Lactobacillaceae decreased. Conclusion: Gut-related CD103+CD11b- DCs and MHC-IIhi B cells may be prevalent in aged autoimmune dry eye models, while CD103+ DCs are not predominant in aging-dependent dry eye model.1. Introduction 1 2. Materials and Methods 4 3. Results 11 4. Discussion 28 References 35 κ΅­λ¬Έ 초둝 42석

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