Journals / Archives of Clinical and Experimental Medicine / 2019 / Cilt: 4 - Sayı: 3

The effects of mesenchymal stem cells on the IDO, HLA-G and PD-L1 expression of breast tumor cells MDA-MB-231 and MCF-7

Mezenkimal kök hücrelerin, meme tümörü hücreleri MDA-MB-231 ve MCF-7’nin IDO, HLA-G ve PD-L1 ifadeleri üzerine etkileri

Pages
127–131
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Conclusion: In conclusion, for MDA-MB-231 cells, MSCs may play a protective role because they reduce the expression of HLA-G and PD-L1 that are involved in the suppression of cytotoxic cells and exhaustion of T cells.

📌 3 Key Takeaways

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Objective & Hypothesis:Aim: Mesenchymal stem cells (MSCs) are strong immunomodulatory cells and a component of the tumor microenvironment.
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Key Findings & Data:In this study, we aimed to investigate the effects of MSCs derived from adipose tissue on the expressions of immune evasive molecules indoleamine 2,3-dioxygenase (IDO), human leukocyte antigen G (HLA-G) and programmed death-ligand 1 (PD-L1) of breast tumor cell lines MDA-MB-231 and MCF-7.
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Conclusion & Impact:Conclusion: In conclusion, for MDA-MB-231 cells, MSCs may play a protective role because they reduce the expression of HLA-G and PD-L1 that are involved in the suppression of cytotoxic cells and exhaustion of T cells.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Mezenkimal kök hücreler · immün kaçınma · HLA-G

Abstract

Aim: Mesenchymal stem cells (MSCs) are strong immunomodulatory cells and a component of the tumor microenvironment. In this study, we aimed to investigate the effects of MSCs derived from adipose tissue on the expressions of immune evasive molecules indoleamine 2,3-dioxygenase (IDO), human leukocyte antigen G (HLA-G) and programmed death-ligand 1 (PD-L1) of breast tumor cell lines MDA-MB-231 and MCF-7. Methods: For this purpose, MSCs, MDA-MB-231 and MCF-7 cells were cultured with increased doses of interferon gamma (IFN-g). In another plate, tumor cells were cultured in transwell inserts using the same IFN-g stimulation to evaluate the effect of MSCs. At the end of the culture period, the HLA-G and PD-L1 expression was detected by flow cytometry, and IDO expression by the Luminex method. Results: We found that in low-dose IFN-g stimulation (10 ng/mL), MSCs led to a significant increase in the HLA-G and PD-L1 expression of MCF-7 cells. On the contrary, at a high dose of IFN-g (50 ng/mL), their expression significantly decreased in both tumor cells. In addition, we observed that the IDO expression of MDA-MB-231 cells was significantly increased in the presence of MSCs, but MCF-7 cells were not affected. Conclusion: In conclusion, for MDA-MB-231 cells, MSCs may play a protective role because they reduce the expression of HLA-G and PD-L1 that are involved in the suppression of cytotoxic cells and exhaustion of T cells. On the other hand, MSCs may be an important source of high IDO levels, and therefore may negatively affect the antitumor immune response. However, our data should be supported by further studies.

Özet

Amaç: Mezenkimal kök hücreler (MKH) güçlü immünomodülatör hücreleridir ve ayrıca tümör mikroçevresinin bir bileşenidir. Bu çalışmada meme tümör hücre hatları MDA-MB-231 ve MCF-7’nin immün evazif moleküller olan Indoleamine 2,3-dioxygenase (IDO), Human Leukocyte Antigen G (HLA-G) and Programmed Death-Ligand 1 (PD-L1) ifadelerine yağ dokusu kökenli mezenkimal kök hücrelerin etkilerini araştırmayı amaçladık. Yöntemler: Bu amaçla MKH, MDA-MB-231 ve MCF-7 hücrelerini artan dozlarda interferon gama (IFN-g) ile kültüre edildi. Başka bir kültür kabında MKH’ler ile tümör hücreleri trans-well insertler ve aynı IFN-g uyarımı ile kültür edildi. Kültür süresinin bitiminde HLA-G ve PD-L1 ifadeleri flow-sitmotetri yöntemi ile IDO ifadeleri Luminex yöntemi ile analiz edildi. Bulgular: Düşük dozlu IFN-g uyarımında (10 ng/mL), MSC'lerin MCF-7 hücrelerinin HLA-G ve PD-L1 ekspresyonunda önemli bir artışa yol açtığını bulduk. Aksine, yüksek doz IFN-g ile (50 ng/mL) bu ifadelerin her iki tümör hücresinde de önemli ölçüde azaldığını gördük. Ek olarak, MDA-MB-231 hücrelerinin IDO ekspresyonunun MSC'lerin varlığında anlamlı şekilde arttığını, ancak MCF-7 hücrelerinin etkilenmediği gördük. Sonuç: Sonuç olarak, MDA-MB-231 hücreleri için MSC'ler, sitotoksik hücrelerin baskılanmasında ve T hücrelerinin tükenmesinde önemli bir rol oynayan HLA-G ve PD-L1 ekspresyonunu azalttığı için koruyucu bir rol oynayabilir. Öte yandan, MSC'ler yüksek IDO seviyeleri için önemli bir kaynak olabilir ve bu nedenle anti-tümör immün yanıtı olumsuz yönde etkileyebilir. Bununla birlikte, verilerimiz diğer çalışmalarla desteklenmelidir.

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Cite This Article

ÖZDEMİR, R. B. Ö., ÖZDEMİR, A. T., KIRMAZ, C., TUĞLU, M. İ., ŞENOL, Ö., ÖZVEREL, C. S., BERDELİ, A. (2019). The effects of mesenchymal stem cells on the IDO, HLA-G and PD-L1 expression of breast tumor cells MDA-MB-231 and MCF-7. Archives of Clinical and Experimental Medicine, Cilt: 4 - Sayı: 3, 127–131. https://ajindex.com/articles/152273

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