Title:Knockdown of PRKD2 Enhances Chemotherapy Sensitivity in Cervical
Cancer via the TP53/CDKN1A Pathway
Volume: 23
Issue: 2
Author(s): Ruijing Feng, Xin Wang, Hongwei Chen, Chen Cao, Ting Liu, Tong Zhao, Huang Chen, Rui Tian, Yangyang Ni, Xun Tian, Zheng Hu*, Ji Ma*Danni Gong*
Affiliation:
- Sun Yat-sen University Nanchang Research Institution, Nanchang 330200, Jiangxi, China
- Department of Gynecological
Oncology, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, Guangdong, China
- Department of Pathology, The Central Hospital of Sui Zhou, Sui Zhou 441300, Hubei, China
- Department of Obstetrics and Gynecology, Tongji Medical College, Huazhong University of Science and Technology,
Wuhan 430014, Hubei, China
Keywords:
Cervical cancer, chemotherapy sensitivity, PRKD2, TP53/CDKN1A pathway, whole exome sequencing, drug resistance.
Abstract:
Background: Chemotherapy is the common treatment for cervical cancer, and the occurrence
of drug resistance seriously affects the therapeutic effect of cervical cancer. Our previous study
found that PRKD2 mutations occurred only in cervical cancer patients with chemotherapy resistance.
However, the relationship between PRKD2 and drug resistance of cervical cancer remains unknown.
Objective: We aim to clarify the relationship between PRKD2 and drug resistance of cervical cancer.
Methods: Samples of patient tumor tissue were collected before chemotherapy and sequenced by
WES. Chemotherapy clinical response was determined by measuring tumor volume. The expression of
PRKD2, cell viability, and apoptosis were assessed by qRT-PCR, Western blot, CCK8, and flow cytometry
in SiHa and ME180 cells after transfected with siPRKD2. The chemotherapy sensitivity signaling-
related proteins were analyzed by Western blot. The expression levels of PRKD2, TP53, and
CDKN1A in tissues were detected by immunohistochemistry staining.
Results: The expression of PRKD2 was higher in chemotherapy-resistant cervical cancer patients.
PRKD2 knockdown increased the chemotherapy sensitivity of cervical cancer cells via the
TP53/CDKN1A pathway, which led to G1 arrest and cell apoptosis. Furthermore, downregulation of
PRKD2 enhances chemotherapeutic sensitivity in cervical cancer patients through the TP53/CDKN1A
pathway.
Conclusion: In summary, PRKD2 may be a promising therapeutic target to improve the efficacy of
chemotherapy.