Downregulation of aromatase by siRNA decreases acetylcholinesterase mRNA and specific activity in SHSY5Y cells

Zekiye Tuba Tüylü Küçükkılınç

Downregulation of aromatase by siRNA decreases acetylcholinesterase mRNA and specific activity in SHSY5Y cells

Abstract

Anti-hormone therapy mediated cognitive decline among cancer patients has been referred to as chemobrain. Current literature indicates that declined estrogen in the brain may be contributing to the genesis of this phenomenon. Aromatase is a key enzyme that converts C19 steroids to estrogen in the brain, although its involvement in cognitive function has remained obscure. This study evaluated the downregulation of aromatase by siRNA treatment and the effect of aromatase downregulation on mRNA expression and specific activity of acetylcholinesterase in SHSY5Y cells. short interfering RNA duplexes were employed to achieve aromatase gene downregulation in SH-SY5Y cells. The reduction of aromatase mRNA was analyzed by real-time PCR. Estradiol levels were determined to confirm the downregulation by a commercial ELISA kit. Acetylcholinesterase mRNA level of siRNA-treated SH-SY5Y cells was analyzed employing Real-time PCR. Specific acetylcholinesterase activity was determined using the Ellman method. Viability and caspase 3/7 activity was examined using ApoTox-GloTM Triplex Assay. zVad-Fmk was employed as a pan-caspase inhibitor in experimental groups.Real-time PCR analysis showed a significant decrease in aromatase mRNA. The downregulation data was also confirmed using an ELISA estradiol kit. Acetylcholinesterase mRNA level was determined significantly reduced in siRNA-treated SH-SY5Y cells. It was observed that the specific activity of acetylcholinesterase was also reduced. Aromatase downregulation didn’t alter viability or caspase 3/7 activity of SHSY5Y cells. However, aromatase downregulation increased susceptibility to caspase-dependent apoptosis.Considering our findings, there may be interactions between aromatase and acetylcholinesterase that have not yet been elucidated and may contribute to the mechanism of chemobrain.

Keywords

References

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Details

Primary Language

English

Subjects

Pharmaceutical Biochemistry

Journal Section

Research Article

Authors

Zekiye Tuba Tüylü Küçükkılınç ^*
0000-0003-1566-0717
Türkiye

Publication Date

June 28, 2025

Submission Date

January 3, 2022

Acceptance Date

January 7, 2022

Published in Issue

Year 2022 Volume: 26 Number: 2

IZ

https://izlik.org/JA32UZ56YA

Cite

RIS / Bibtex

APA

Tüylü Küçükkılınç, Z. T. (2025). Downregulation of aromatase by siRNA decreases acetylcholinesterase mRNA and specific activity in SHSY5Y cells. Journal of Research in Pharmacy, 26(2), 362-369. https://izlik.org/JA32UZ56YA

AMA

1.Tüylü Küçükkılınç ZT. Downregulation of aromatase by siRNA decreases acetylcholinesterase mRNA and specific activity in SHSY5Y cells. J. Res. Pharm. 2025;26(2):362-369. https://izlik.org/JA32UZ56YA

Chicago

Tüylü Küçükkılınç, Zekiye Tuba. 2025. “Downregulation of Aromatase by SiRNA Decreases Acetylcholinesterase MRNA and Specific Activity in SHSY5Y Cells”. Journal of Research in Pharmacy 26 (2): 362-69. https://izlik.org/JA32UZ56YA.

EndNote

Tüylü Küçükkılınç ZT (June 1, 2025) Downregulation of aromatase by siRNA decreases acetylcholinesterase mRNA and specific activity in SHSY5Y cells. Journal of Research in Pharmacy 26 2 362–369.

IEEE

[1]Z. T. Tüylü Küçükkılınç, “Downregulation of aromatase by siRNA decreases acetylcholinesterase mRNA and specific activity in SHSY5Y cells”, J. Res. Pharm., vol. 26, no. 2, pp. 362–369, June 2025, [Online]. Available: https://izlik.org/JA32UZ56YA

ISNAD

Tüylü Küçükkılınç, Zekiye Tuba. “Downregulation of Aromatase by SiRNA Decreases Acetylcholinesterase MRNA and Specific Activity in SHSY5Y Cells”. Journal of Research in Pharmacy 26/2 (June 1, 2025): 362-369. https://izlik.org/JA32UZ56YA.

JAMA

1.Tüylü Küçükkılınç ZT. Downregulation of aromatase by siRNA decreases acetylcholinesterase mRNA and specific activity in SHSY5Y cells. J. Res. Pharm. 2025;26:362–369.

MLA

Tüylü Küçükkılınç, Zekiye Tuba. “Downregulation of Aromatase by SiRNA Decreases Acetylcholinesterase MRNA and Specific Activity in SHSY5Y Cells”. Journal of Research in Pharmacy, vol. 26, no. 2, June 2025, pp. 362-9, https://izlik.org/JA32UZ56YA.

Vancouver

1.Zekiye Tuba Tüylü Küçükkılınç. Downregulation of aromatase by siRNA decreases acetylcholinesterase mRNA and specific activity in SHSY5Y cells. J. Res. Pharm. [Internet]. 2025 Jun. 1;26(2):362-9. Available from: https://izlik.org/JA32UZ56YA