RNAi‑mediated downregulation of asparaginase‑like protein 1 inhibits growth and promotes apoptosis of human cervical cancer line SiHa

Lv,Xiao‑Feng; Hong,Han‑Qing; Liu,Ling; Cui,Shi‑Hong; Ren,Chen‑Chen; Li,Hong‑Yu; Zhang,Xiao‑An; Zhang,Lin‑Dong; Wei,Tian‑Xiang; Liu,Jin‑Jin; Xing,Wen‑Ying; Fu,Han; Yan,Shu‑Jun

doi:10.3892/mmr.2018.9018

RNAi‑mediated downregulation of asparaginase‑like protein 1 inhibits growth and promotes apoptosis of human cervical cancer line SiHa

Authors:
- Xiao‑Feng Lv
- Han‑Qing Hong
- Ling Liu
- Shi‑Hong Cui
- Chen‑Chen Ren
- Hong‑Yu Li
- Xiao‑An Zhang
- Lin‑Dong Zhang
- Tian‑Xiang Wei
- Jin‑Jin Liu
- Wen‑Ying Xing
- Han Fu
- Shu‑Jun Yan
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Affiliations: Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China, Department of Imaging, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
Published online on: May 14, 2018 https://doi.org/10.3892/mmr.2018.9018
Pages: 931-937
Copyright: © Lv et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Asparaginase like 1 (ASRGL1) protein belongs to the N‑terminal nucleophile group, cleaving the isoaspartyl‑dipeptides and L‑asparagine by adding water. It tends to be overexpressed in cancerous tumors including ovarian cancer and breast tumors. The present study assessed the potential ability of ASRGL1 as a molecular target in gene‑based cervical cancer treatment. The protein expression level of ASRGL1 was determined in paraffin‑embedded tumor specimen by immunohistochemistry. Additionally, in order to assess the activity of ASRGL1 during the process of cervical cancer cell multiplication, ASRGL1‑short hairpin (sh) RNA‑expressing lentivirus was established, which was used to infect SiHa cells. The Cellomics ArrayScan VT1 Reader identified the influence of downregulation on SiHa caused by RNA interference‑intervened ASRGL1. Flow cytometric analysis was also performed to evaluate the influence. The cyclin dependent kinase (CDK2), cyclin A2, B‑cell lymphoma 2 (Bcl‑2) and Bcl‑2‑associated X protein (Bax) expression levels were assessed by western blot analysis. ASRGL1 was observed to be overexpressed in cervical cancer tissues when compared with the adjacent normal tissues. The knockdown of ASRGL1 in SiHa by ASRGL1‑shRNA lentivirus infection significantly inhibited cell growth and enhanced cellular apoptosis; the cells were also captured during the S phase. The knockdown of ASRGL1 expression led to the increased expression of Bax and decreased expression of Bcl‑2, CDK2 and cyclin A2. In conclusion, ASRGL1 was closely associated with growth and apoptosis in cervical cancer. Therefore, ASRGL1 may be a novel, potentially effective anti‑cervical cancer therapy.

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