Antiproliferative and Apoptotic effects of Aprepitant on Human Glioblastoma U87MG Cells

Yıl 2017, Cilt: 21 Sayı: 1, 156 - 164, 20.09.2016

Miriş Dikmen

https://doi.org/10.12991/marupj.259893

Öz

Glioblastoma multiforme, is the
most malignant glioma among  other
gliomas with high incidence. It has aggresive properties  such as high proliferation, invasion and
migration rates.  Therefore, recently
studies have focused on the development  of
new therapeutic targets in glioblastoma chemotherapy.  Substance P, neurokinin-1 (SP/NK-1) receptor
system has an  important role in cancer
development and metastasis. Therefore,  NK-1
receptors are new therapeutic targets for glioblastoma  therapy and development of NK-1 receptor
antagonists. 

In this study, antiproliferative
and apoptotic effects of aprepitant  which
is an antiemetic drug commonly using in chemotherapy  on human U87MG glioblastoma cells were
investigated.  Antiproliferative effects
of aprepitant were evaluated by  MTT
(3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium  bromide) and Real Time Analyses System (RTCA
DP). Also  apoptotic effects of
aprepitant were evaluated by annexin-VPI 
and caspase-3 activity by using flow cytometer. According  to the cell index values obtained from
real-time cell analysis  system, with 50
μM and higher concentrations, cell proliferation  was decreased and IC50 values were determined
as 76.9, 62.5  and 59.2 μM for 24, 48 and
72 hours respectively. Aprepitant  showed
significant antiproliferative effects on U87MG cells.  Depending on increasing aprepitant
concentrations, both  early and late
apoptotic cell ratios were increased. In addition,  caspase-3 activation was slightly increased
with IC25 and IC50  concentrations of
aprepitant according to the control group. 
As a result, aprepitant showed important antiproliferative and  apoptotic effects on U87MG cells. In
conclusion, NK-1 receptor  antagonists
may have a potential therapeutic role for human 
glioblastoma chemotherapy.   

Anahtar Kelimeler

aprepitant, U87MG cell, antiproliferative, apoptosis, neurokinin‑1 receptor

Aprepitantın İnsan Glioblastoma U87MG Hücreleri üzerinde Antiproliferatif ve Apoptotik Etkileri

Öz

Glioblastoma multiforme, gliomalar arasında en malign özellikte olup, görülme sıklığı  oldukça yüksektir. Hızlı çoğalma, beyin dokusuna invazyon ve migrasyon gibi agresif özelliklere sahiptir. Bu nedenle son yıllarda glioblastoma kemoterapisinde, yeni tedavi hedeflerinin gelişmesini üzerine çalışmalar yoğunlaşmıştır. Substans P, nörokinin-1 (SP/NK-1) reseptör sistemi, kanser gelişimi ve kanser metastazında önemli bir rol oynamaktadır. Bu nedenle NK-1 reseptörleri, glioblastoma tedavisinde ve NK-1 reseptör antagonistlerinin gelişiminde yeni tedavi hedefleri arasında yer almaktadır.

Bu çalışmada,  klinikte özellikle kemoterapi sırasında antiemetik amaçla kullanılan,  bir NK-1 reseptör antagonisti olan aprepitantın, insan malignant glioblastoma U87-MG hücre hattında antiproliferatif ve apoptotik etkileri araştırılmıştır. Çalışmada MTT yöntemi ve gerçek zamanlı hücre analiz sistemi (RTCA DP)  ile hücre proliferasyon analizleri, anneksin V-PI ve kaspaz 3 flow sitometri analizleri ile de apoptotik etkiler çalışılmıştır. MTT analizine göre Aprepitantın konsantrasyon ve zamana artışına bağlı olarak U87MG hücre önemli derecede sitotoksik etki yaptığı ve U87MG hücre proliferasyonunu azalttığı görülmüştür. Gerçek zamanlı analiz sisteminden elde edilen cell index değerlerine göre de, 50 µM ve üzeri aprepitant konsantrasyonlarında hücre proliferasyonunun azaldığı ve sırasıyla IC₅₀ değerlerinin 24. saatte 76.9 µM,  48. saatte 62.5 µM ve 72. saatte de 59.2 µM olarak belirlenmiştir. Flow sitometri analiz sonuçlarına göre aprepitantın 24. saatteki erken ve geç apoptotik etkisi konsantrasyon artışına bağlı olarak artış göstermiştir. Özellikle IC₂₅ ve IC₅₀ aprepitant değerlerinde aktif kaspaz-3 değeri kontrole göre, az da olsa artmıştır.  Sonuç olarak aprepitantın malignant glioblastoma U87-MG hücrelerinde önemli antiproliferatif ve apoptotik etkileri belirlenmiş olup, aprepitant ve yeni NK-1 reseptörler antagonistlerinin, kemoterapi sırasında antikanser ilaçlar ile birlikte umut vadeden yeni bir terapötik hedef olabileceği görülmektedir

Anahtar Kelimeler

NK-1, aprepitant, U87MG, apoptoz, antiproliferatif

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