Journals / Türk Biyokimya Dergisi / 2020 / Cilt: 45 - Sayı: 6

Expression of proteins linked to Alzheimer’s disease in C6 rat glioma cells under the action of lipopolysaccharide (LPS), nimesulide, resveratrol and citalopram

[LPS, nimesulid, resveratrol ve sitalopram etkisi altında C6 sıçan glioma hücrelerinde Alzheimer hastalığına bağlı proteinlerin ekspresyonu]

Pages
793–801
Publication Date
2022-11-06
DOI
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

The objective ofthis study was to evaluate the effect of nimesulide,resveratrol and citalopram on C6 (glioma) cells whenexposed to Lipopolysaccharide (LPS).Methods: Expression levels of the proteins APP, BACE1,COX-2, Nicastrin and Tau-p were evaluated by Westernblotand ELISA in C6 cells by effect of LPS, and the drugscitalopram, nimesulide and resveratrol.Results: It was found that LPS is able to hyperphosphorylateTau in this cell model and the drugsdecrease hyperphosphorylation.

📌 3 Key Takeaways

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Objective & Hypothesis:Objectives: Alzheimer’s disease is complex and involvesseveral proteins.
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Key Findings & Data:Most affected are Tau protein and amyloidprecursor protein (APP) which, when cleaved by the enzymesβ-secretase (BACE1) and γ-secretase (Nicastrin),yield the amyloid peptide.
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Conclusion & Impact:The objective ofthis study was to evaluate the effect of nimesulide,resveratrol and citalopram on C6 (glioma) cells whenexposed to Lipopolysaccharide (LPS).Methods: Expression levels of the proteins APP, BACE1,COX-2, Nicastrin and Tau-p were evaluated by Westernblotand ELISA in C6 cells by effect of LPS, and the drugscitalopram, nimesulide and resveratrol.Results: It was found that LPS is able to hyperphosphorylateTau in this cell model and the drugsdecrease hyperphosphorylation.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Objectives: Alzheimer’s disease is complex and involvesseveral proteins. Most affected are Tau protein and amyloidprecursor protein (APP) which, when cleaved by the enzymesβ-secretase (BACE1) and γ-secretase (Nicastrin),yield the amyloid peptide. Although these processes takeplace mainly in neurons, it is not exclusive of them, as gliacells also contribute to these processes. The objective ofthis study was to evaluate the effect of nimesulide,resveratrol and citalopram on C6 (glioma) cells whenexposed to Lipopolysaccharide (LPS).Methods: Expression levels of the proteins APP, BACE1,COX-2, Nicastrin and Tau-p were evaluated by Westernblotand ELISA in C6 cells by effect of LPS, and the drugscitalopram, nimesulide and resveratrol.Results: It was found that LPS is able to hyperphosphorylateTau in this cell model and the drugsdecrease hyperphosphorylation. We also found that thedrugs increase the expression of APP, decrease BACE1 andpromote the expression of Nicastrin. COX-2 decreases itsexpression when nimesulide is used.Conclusions: Our results suggest that C6 cell line is usefulto analyze the effect of pro-inflammatory molecules on tauphosphorylation and APP expression in vitro. The beneficialeffect on the reduction of tau hyperphosphorylationshown by citalopram, nimesulide and resveratrol shouldbe taken with caution due to the limitations of the presentstudy and further research on these compounds is neededto determine their therapeutic use in neurodegenerativediseases such as Alzheimer’s disease.

Özet

Amaç: Alzheimer hastalığı karmaşıktır ve birkaç protein içerir. En çok etkilenenler, u-sekretaz (BACE1) ve γ-sekretaz (Nicastrin) enzimleri tarafından parçalandığında amiloid peptidi veren Tau proteini ve amiloid öncü proteinidir (APP). Bu süreçler esas olarak nöronlarda gerçekleşmesine rağmen, glia hücreleri de bu süreçlere katkıda bulunduğundan, bunlardan ayrı değildir. Amaç: Bu çalışmanın amacı, LPS’ye maruz kaldığında nimesulid, resveratrol ve sitalopramın C6 (glioma) hücreleri üzerindeki etkisini değerlendirmektir. Gereç ve Yöntem: APP, BACE1, COX-2, Nicastrin ve Tau-p proteinlerinin ekspresyon seviyeleri, LPS’nin etkisi ile C6 hücrelerinde Western-blot ve ELISA ve sitalopram, nimesulid ve resveratrol ilaçları ile değerlendirildi. Bulgular: Bu hücre modelinde LPS’nin Tau’yu hiperfosforilat edebildiği ve ilaçların hiperfosforilasyonu azalttığı bulundu. Ayrıca ilaçların APP ekspresyonunu arttırdığını, BACE1’i azalttığını ve Nicastrin ekspresyonunu teşvik ettiğini bulduk. Nimesulid kullanıldığında COX-2 ekspresyonunu azaltır. Sonuçlar: Sonuçlarımız, pro-enflamatuar moleküllerin tau fosforilasyonu ve in vitro APP ekspresyonu üzerindeki etkisini analiz etmek için C6 hücre hattının yararlı olduğunu göstermektedir. Sitalopram, nimesulid ve resveratrol tarafından gösterilen tau hiperfosforilasyonunun azaltılması üzerindeki yararlı etki, mevcut çalışmanın sınırlamaları nedeniyle dikkatle alınmalı ve bu bileşikler üzerinde, Alzheimer hastalığı gibi nörodejeneratif hastalıklarda terapötik kullanımlarının belirlenmesi için daha fazla araştırmaya ihtiyaç vardır.

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Cite This Article

ABREU, G. E. A., DİAZ, J. A. M., AGUİLAR, M. E. H., DURAN, F. R., COVARRUBİAS, D. H., HERNANDEZ, L. I. G., GUTİERREZ, S. L. M. (2022). Expression of proteins linked to Alzheimer’s disease in C6 rat glioma cells under the action of lipopolysaccharide (LPS), nimesulide, resveratrol and citalopram. Türk Biyokimya Dergisi, Cilt: 45 - Sayı: 6, 793–801. https://ajindex.com/articles/620778

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