scholarly journals Activation of FGD5-AS1 Promotes Progression of Cervical Cancer through Regulating BST2 to Inhibit Macrophage M1 Polarization

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Guokun Liu ◽  
Xuan Du ◽  
Li Xiao ◽  
Qing Zeng ◽  
QianLing Liu

Accumulating evidence has elucidated the biological function of lncRNAs in various tumors. FGD5 antisense RNA 1 (FGD5-AS1) is identified as a significant tumor regulator in malignancies. Up to now, the detailed function of FGD5-AS1 in cervical cancer and its underlying molecular mechanisms remain uninvestigated. Bone marrow stromal cell antigen 2 (BST2) can play critical roles in immune response, and the roles of BST2 in cervical cancer was explored currently. The level of FGD5-AS1 and BST2 was detected by qRT-PCR in cervical cancer cells. FGD5-AS1 and BST2 expression was significantly upregulated in cervical cancer cells. Then, the decrease of FGD5-AS1 greatly repressed cervical cancer cell growth in vitro. In addition, FGD5-AS1 silencing repressed BST2 expression and suppressed M2 macrophage polarization. Mechanistically, we confirmed that FGD5-AS1 sponged miR-129-5p to reduce its inhibition on BST2. Furthermore, lack of BST2 depressed cervical cancer cell growth, while inducing apoptosis. Loss of BST2 induced M1 macrophage polarization while blocking M2 macrophage polarization. For another, we demonstrated that FGD5-AS1-triggered M2 macrophage polarization was remarkably reversed by miR-129-5p via suppressing BST2. In conclusion, FGD5-AS1 induced M2 macrophage polarization via sponging miR-129-5p and modulating BST2, thus contributing to cervical cancer development. Our findings revealed FGD5-AS1/miR-129-5p/BST2 as a new potential target for cervical cancer.

2021 ◽  
Vol 28 ◽  
Author(s):  
Yuan Pan ◽  
Yuting Jiang ◽  
Yingli Cui ◽  
Jihong Zhu ◽  
Yang Yu

Background : Lactoferricin peptide (LP) has been reported to control cancer cell proliferation. NF‐κB interacting lncRNA (NKILA) is a tumor suppressor in several cancers. Objective: We aimed to explore the potential function of the truncated LP (TLP) in the prevention of cervical cancer cell proliferation. Methods: Bioinformatics analysis via PPA-Pred2 showed that 18-aa N-terminus of truncated lactoferricin peptide (TLP18, FKCRRWQWRMKKLGAPSI) shows higher affinity with nuclear factor kappaB (NF-κB) than LP. The effects of LP and TLP18 on cervical cancer cells SiHa and HeLa and the related mechanisms were explored by investigating NF‐κB and lncRNA-NKILA. Results : TLP18 shows an inhibitory rate up to 0.4-fold higher than LP on the growth of cervical cancer cells (P<0.05). NKILA siRNA promoted cell growth whether LP or TLP18 treatment (P<0.05). TLP18 treatment increases the level of lncRNA-NKILA and reduces the level of NF‐κB up to 0.2-fold and 0.6-fold higher than LP (P<0.05), respectively. NKILA siRNA increased the levels of NF‐κB, cleaved caspase-3, and BAX (P<0.05). TLP18 increased apoptotic cell rate up to 0.2-fold higher than LP, while NKILA siRNA inhibited cell apoptosis cell growth even LP or TLP18 treatment. Conclusion: Truncated Lactoferricin peptide controls cervical cancer cell proliferation via lncRNA-NKILA/NF‐κB feedback loop.


2017 ◽  
Vol 399 (1) ◽  
pp. 93-100 ◽  
Author(s):  
Yuanyuan Meng ◽  
Qi Li ◽  
Lianwei Li ◽  
Rong Ma

AbstractThis study was intended to analyze effects of lncRNA CRNDE on cervical cancer cell growth and metastasis. Fifty pairs of cervical cancer tissues and corresponding adjacent tissues were collected. Expressions of long non-coding RNAs (lncRNAs) in tissue samples were detected by microarray analysis. Expression levels of CRNDE in cervical cancer cells and normal cells were detected by qRT-PCR. Cell-counting kit-8 (CCK-8) assay and clone formation assay were utilized to evaluate cell growth. Wound healing assay and Transwell assay were conducted to detect the migratory and invasive capability of cervical cancer cells. The expressions of CRNDE in cervical cancer tissues and cells were higher than those in normal tissues and cells. CCK-8 assay and clone formation assay showed that the knockdown of CRNDE could inhibit the cell proliferation of HeLa and C-33A cells. Wound healing assay indicated that the downregulation of CRNDE expression could suppress the cell migration. The result of a Transwell assay demonstrated that the number of invasion cells reduced in the CRNDE-si group in comparison with the Mock group. LncRNA CRNDE could promote the cell growth and stimulate the metastasis of cervical cancer cells.


2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Huilin Zhang ◽  
Ping He ◽  
Qing Zhou ◽  
Yan Lu ◽  
Bingjian Lu

Abstract Background CSN5, a member of Cop9 signalosome, is essential for protein neddylation. It has been supposed to serve as an oncogene in some cancers. However, the role of CSN5 has not been investigated in cervical cancer yet. Methods Data from TCGA cohorts and GEO dataset was analyzed to examine the expression profile of CSN5 and clinical relevance in cervical cancers. The role of CSN5 on cervical cancer cell proliferation was investigated in cervical cancer cell lines, Siha and Hela, through CSN5 knockdown via CRISPR–CAS9. Western blot was used to detect the effect of CSN5 knockdown and overexpression. The biological behaviors were analyzed by CCK8, clone formation assay, 3-D spheroid generation assay and cell cycle assay. Besides, the role CSN5 knockdown in vivo was evaluated by xenograft tumor model. MLN4924 was given in Siha and Hela with CSN5 overexpression. Results We found that downregulation of CSN5 in Siha and Hela cells inhibited cell proliferation in vitro and in vivo, and the inhibitory effects were largely rescued by CSN5 overexpression. Moreover, deletion of CSN5 caused cell cycle arrest rather than inducing apoptosis. Importantly, CSN5 overexpression confers resistance to the anti-cancer effects of MLN4924 (pevonedistat) in cervical cancer cells. Conclusions Our findings demonstrated that CSN5 functions as an oncogene in cervical cancers and may serve as a potential indicator for predicting the effects of MLN4924 treatment in the future.


2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Dan Lei ◽  
Wen-Ting Yang ◽  
Peng-Sheng Zheng

AbstractHomeobox B4 (HOXB4), which belongs to the homeobox (HOX) family, possesses transcription factor activity and has a crucial role in stem cell self-renewal and tumorigenesis. However, its biological function and exact mechanism in cervical cancer remain unknown. Here, we found that HOXB4 was markedly downregulated in cervical cancer. We demonstrated that HOXB4 obviously suppressed cervical cancer cell proliferation and tumorigenic potential in nude mice. Additionally, HOXB4-induced cell cycle arrest at the transition from the G0/G1 phase to the S phase. Conversely, loss of HOXB4 promoted cervical cancer cell growth both in vitro and in vivo. Bioinformatics analyses and mechanistic studies revealed that HOXB4 inhibited the activity of the Wnt/β-catenin signaling pathway by direct transcriptional repression of β-catenin. Furthermore, β-catenin re-expression rescued HOXB4-induced cervical cancer cell defects. Taken together, these findings suggested that HOXB4 directly transcriptional repressed β-catenin and subsequently inactivated the Wnt/β-catenin signaling pathway, leading to significant inhibition of cervical cancer cell growth and tumor formation.


Cancers ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 1934 ◽  
Author(s):  
Eric Ehrke-Schulz ◽  
Sonja Heinemann ◽  
Lukas Schulte ◽  
Maren Schiwon ◽  
Anja Ehrhardt

Human papillomaviruses (HPV) cause malignant epithelial cancers including cervical carcinoma, non-melanoma skin and head and neck cancer. They drive tumor development through the expression of their oncoproteins E6 and E7. Designer nucleases were shown to be efficient to specifically destroy HPV16 and HPV18 oncogenes to induce cell cycle arrest and apoptosis. Here, we used high-capacity adenoviral vectors (HCAdVs) expressing the complete CRISPR/Cas9 machinery specific for HPV18-E6 or HPV16-E6. Cervical cancer cell lines SiHa and CaSki containing HPV16 and HeLa cells containing HPV18 genomes integrated into the cellular genome, as well as HPV-negative cancer cells were transduced with HPV-type-specific CRISPR-HCAdV. Upon adenoviral delivery, the expression of HPV-type-specific CRISPR/Cas9 resulted in decreased cell viability of HPV-positive cervical cancer cell lines, whereas HPV-negative cells were unaffected. Transduced cervical cancer cells showed increased apoptosis induction and decreased proliferation compared to untreated or HPV negative control cells. This suggests that HCAdV can serve as HPV-specific cancer gene therapeutic agents when armed with HPV-type-specific CRISPR/Cas9. Based on the versatility of the CRISPR/Cas9 system, we anticipate that our approach can contribute to personalized treatment options specific for the respective HPV type present in each individual tumor.


2017 ◽  
Vol 27 (7) ◽  
pp. 1306-1317
Author(s):  
Yen-Yun Wang ◽  
Pei-Wen Hsieh ◽  
Yuk-Kwan Chen ◽  
Stephen Chu-Sung Hu ◽  
Ya-Ling Hsu ◽  
...  

ObjectiveThe β-nitrostyrene family has been reported to possess anticancer properties. However, the anticancer activity of β-nitrostyrenes on cervical cancer cells and the underlying mechanisms involved remain unexplored. In this study, a β-nitrostyrene derivative CYT-Rx20 (3′-hydroxy-4′-methoxy-β-methyl-β-nitrostyrene) was synthesized, and its anticancer activity on cervical cancer cells and the mechanisms involved were investigated.MethodsThe effect of CYT-Rx20 on human cervical cancer cell growth was evaluated using cell viability assay. Reactive oxygen species (ROS) generation and annexin V staining were detected by flow cytometry. The protein expression levels of cleaved caspase-3, cleaved caspase-9, cleaved poly (ADPribose) polymerase, γH2AX, β-catenin, Vimentin, and Twist were measured by Western blotting. DNA double-strand breaks were determined by γ-H2AX foci formation and neutral comet assay. Migration assay was used to determine cancer cell migration. Nude mice xenograft was used to investigate the antitumor effects of CYT-Rx20 in vivo.ResultsCYT-Rx20 induced cytotoxicity in cervical cancer cells by promoting cell apoptosis via ROS generation and DNA damage. CYT-Rx20-induced cell apoptosis, ROS generation, and DNA damage were reversed by thiol antioxidants. In addition, CYT-Rx20 inhibited cervical cancer cell migration by regulating the expression of epithelial-to-mesenchymal transition markers. In nude mice, CYT-Rx20 inhibited cervical tumor growth accompanied by increased expression of DNA damage marker γH2AX and decreased expression of mesenchymal markers β-catenin and Twist.ConclusionsCYT-Rx20 inhibits cervical cancer cells in vitro and in vivo and has the potential to be further developed into an anti-cervical cancer drug clinically.


2021 ◽  
Author(s):  
Huilin Zhang ◽  
Ping He ◽  
Qing Zhou ◽  
Yan Lu ◽  
Bingjian Lu

Abstract BackgroundsCSN5, a member of Cop9 signalosome, is essential for protein neddylation. It has been supposed to serve as an oncogene in some cancers. However, the role of CSN5 has not been investigated in cervical cancer yet.MethodsData from TCGA cohorts and GEO dataset was analyzed to examine the expression profile of CSN5 in cervical cancers. The role of CSN5 on cervical cancer cell proliferation was investigated in cervical cancer cell lines, Siha and Hela, through CSN5 knockdown via CRISPR-CAS9. Western blot was used to detect the effect of CSN5 knockdown and overexpression. CCK8, clone formation assay and cell cycle assay were also employed. Besides, the role CSN5 knockdown in vivo was evaluated by xenograft tumor model. Moreover, MLN4924 was applied in Siha and Hela with CSN5 overexpression.ResultsWe found that downregulation of CSN5 in Siha and Hela cells inhibited cell proliferation in vitro and in vivo, and the inhibitory effects were largely rescued by CSN5 overexpression. Moreover, deletion of CSN5 caused cell cycle arrest rather than inducing apoptosis. Importantly, CSN5 overexpression confers resistance to the anti-cancer effects of MLN4924 (pevonedistat) in cervical cancer cells.ConclusionsOur findings demonstrated that CSN5 functions as an oncogene in cervical cancers and may serve as a potential indicator for predicting the effects of MLN4924 treatment in the future.


2020 ◽  
Author(s):  
Leilei Xu ◽  
Qin Zhang ◽  
Changhua Li ◽  
Fu Hua ◽  
Xiaoping Liu

Abstract The authors have withdrawn this preprint due to erroneous posting.


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