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Lapehn S, Nair S, Firsick EJ, MacDonald J, Thoreson C, Litch JA, Bush NR, Kadam L, Girard S, Myatt L, Prasad B, Sathyanarayana S, Paquette AG. Transcriptomic comparison of in vitro models of the human placenta. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.14.598695. [PMID: 38915703 PMCID: PMC11195179 DOI: 10.1101/2024.06.14.598695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
Studying the human placenta through in vitro cell culture methods is necessary due to limited access and amenability of human placental tissue to certain experimental methods as well as distinct anatomical and physiological differences between animal and human placentas. Selecting an in vitro culture model of the human placenta is challenging due to representation of different trophoblast cell types with distinct biological roles and limited comparative studies that define key characteristics of these models. Therefore, the aim of this research was to create a comprehensive transcriptomic comparison of common in vitro models of the human placenta compared to bulk placental tissue from the CANDLE and GAPPS cohorts (N=1083). We performed differential gene expression analysis on publicly available RNA sequencing data from 6 common in vitro models of the human placenta (HTR-8/SVneo, BeWo, JEG-3, JAR, Primary Trophoblasts, and Villous Explants) and compared to CANDLE and GAPPS bulk placental tissue or cytotrophoblast, syncytiotrophoblast, and extravillous trophoblast cell types derived from bulk placental tissue. All in vitro placental models had a substantial number of differentially expressed genes (DEGs, FDR<0.01) compared to the CANDLE and GAPPS placentas (Average DEGs=10,873), and the individual trophoblast cell types (Average DEGs=5,346), indicating that there are vast differences in gene expression compared to bulk and cell-type specific human placental tissue. Hierarchical clustering identified 53 gene clusters with distinct expression profiles across placental models, with 22 clusters enriched for specific KEGG pathways, 7 clusters enriched for high-expression placental genes, and 7 clusters enriched for absorption, distribution, metabolism, and excretion genes. In vitro placental models were classified by fetal sex based on expression of Y-chromosome genes that identified HTR-8/SVneo cells as being of female origin, while JEG-3, JAR, and BeWo cells are of male origin. Overall, none of the models were a close approximation of the transcriptome of bulk human placental tissue, highlighting the challenges with model selection. To enable researchers to select appropriate models, we have compiled data on differential gene expression, clustering, and fetal sex into an accessible web application: "Comparative Transcriptomic Placental Model Atlas (CTPMA)" which can be utilized by researchers to make informed decisions about their selection of in vitro placental models.
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Affiliation(s)
- Samantha Lapehn
- Center for Developmental Biology and Regenerative Medicine, Seattle Children!s Research Institute, Seattle, WA 98101 United States
| | - Sidharth Nair
- Center for Developmental Biology and Regenerative Medicine, Seattle Children!s Research Institute, Seattle, WA 98101 United States
| | - Evan J. Firsick
- Center for Developmental Biology and Regenerative Medicine, Seattle Children!s Research Institute, Seattle, WA 98101 United States
| | - James MacDonald
- Department of Environmental and Occupational Health Sciences, University of Washington School of Public Health, Seattle, WA 98195 United States
| | - Ciara Thoreson
- Global Alliance to Prevent Prematurity and Stillbirth, Lynwood, WA 98036 United States
| | - James A Litch
- Global Alliance to Prevent Prematurity and Stillbirth, Lynwood, WA 98036 United States
| | - Nicole R. Bush
- Department of Psychiatry and Behavioral Sciences; Department of Pediatrics, University of California San Francisco, San Francisco, CA 94143 United States
| | - Leena Kadam
- Department of Obstetrics and Gynecology, Oregon Health & Science University, Portland, OR 97239 United States
| | - Sylvie Girard
- Department of Obstetrics and Gynecology, Mayo Clinic, Rochester, MN 55905 United States
| | - Leslie Myatt
- Department of Obstetrics and Gynecology, Oregon Health & Science University, Portland, OR 97239 United States
| | - Bhagwat Prasad
- Department of Pharmaceutical Sciences, Washington State University, Spokane, WA 99202 United States
| | - Sheela Sathyanarayana
- Department of Pediatrics, University of Washington School of Medicine, Seattle, WA 98195 United States
- Center for Child Health, Behavior and Development, Seattle Children!s Research Institute, Seattle, WA 98101 United States
- Department of Epidemiology, University of Washington School of Public Health, Seattle, WA 98101 United States
| | - Alison G. Paquette
- Center for Developmental Biology and Regenerative Medicine, Seattle Children!s Research Institute, Seattle, WA 98101 United States
- Department of Environmental and Occupational Health Sciences, University of Washington School of Public Health, Seattle, WA 98195 United States
- Department of Pediatrics, University of Washington School of Medicine, Seattle, WA 98195 United States
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Nasimi Shad A, Fanoodi A, Maharati A, Akhlaghipour I, Bina AR, Saburi E, Forouzanfar F, Moghbeli M. Role of microRNAs in tumor progression by regulation of kinesin motor proteins. Int J Biol Macromol 2024; 270:132347. [PMID: 38754673 DOI: 10.1016/j.ijbiomac.2024.132347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Revised: 05/06/2024] [Accepted: 05/11/2024] [Indexed: 05/18/2024]
Abstract
Aberrant cell proliferation is one of the main characteristics of tumor cells that can be affected by many cellular processes and signaling pathways. Kinesin superfamily proteins (KIFs) are motor proteins that are involved in cytoplasmic transportations and chromosomal segregation during cell proliferation. Therefore, regulation of the KIF functions as vital factors in chromosomal stability is necessary to maintain normal cellular homeostasis and proliferation. KIF deregulations have been reported in various cancers. MicroRNAs (miRNAs) and signaling pathways are important regulators of KIF proteins. MiRNAs have key roles in regulation of the cell proliferation, migration, and apoptosis. In the present review, we discussed the role of miRNAs in tumor biology through the regulation of KIF proteins. It has been shown that miRNAs have mainly a tumor suppressor function via the KIF targeting. This review can be an effective step to introduce the miRNAs/KIFs axis as a probable therapeutic target in tumor cells.
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Affiliation(s)
- Arya Nasimi Shad
- Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Ali Fanoodi
- Student Research Committee, Faculty of Medicine, Birjand University of Medical Sciences, Birjand, Iran
| | - Amirhosein Maharati
- Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Iman Akhlaghipour
- Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Amir Reza Bina
- Student Research Committee, Faculty of Medicine, Birjand University of Medical Sciences, Birjand, Iran
| | - Ehsan Saburi
- Department of Medical Genetics and Molecular Medicine, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Fatemeh Forouzanfar
- Clinical Research Development Unit, Imam Reza Hospital, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Meysam Moghbeli
- Department of Medical Genetics and Molecular Medicine, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
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Kołat D, Kałuzińska Ż, Bednarek AK, Płuciennik E. Determination of WWOX Function in Modulating Cellular Pathways Activated by AP-2α and AP-2γ Transcription Factors in Bladder Cancer. Cells 2022; 11:cells11091382. [PMID: 35563688 PMCID: PMC9106060 DOI: 10.3390/cells11091382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 04/16/2022] [Accepted: 04/18/2022] [Indexed: 02/07/2023] Open
Abstract
Following the invention of high-throughput sequencing, cancer research focused on investigating disease-related alterations, often inadvertently omitting tumor heterogeneity. This research was intended to limit the impact of heterogeneity on conclusions related to WWOX/AP-2α/AP-2γ in bladder cancer which differently influenced carcinogenesis. The study examined the signaling pathways regulated by WWOX-dependent AP-2 targets in cell lines as biological replicates using high-throughput sequencing. RT-112, HT-1376 and CAL-29 cell lines were subjected to two stable lentiviral transductions. Following CAGE-seq and differential expression analysis, the most important genes were identified and functionally annotated. Western blot was performed to validate the selected observations. The role of genes in biological processes was assessed and networks were visualized. Ultimately, principal component analysis was performed. The studied genes were found to be implicated in MAPK, Wnt, Ras, PI3K-Akt or Rap1 signaling. Data from pathways were collected, explaining the differences/similarities between phenotypes. FGFR3, STAT6, EFNA1, GSK3B, PIK3CB and SOS1 were successfully validated at the protein level. Afterwards, a definitive network was built using 173 genes. Principal component analysis revealed that the various expression of these genes explains the phenotypes. In conclusion, the current study certified that the signaling pathways regulated by WWOX and AP-2α have more in common than that regulated by AP-2γ. This is because WWOX acts as an EMT inhibitor, AP-2γ as an EMT enhancer while AP-2α as a MET inducer. Therefore, the relevance of AP-2γ in targeted therapy is now more evident. Some of the differently regulated genes can find application in bladder cancer treatment.
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Kotulak-Chrząszcz A, Kmieć Z, Wierzbicki PM. Sonic Hedgehog signaling pathway in gynecological and genitourinary cancer (Review). Int J Mol Med 2021; 47:106. [PMID: 33907821 PMCID: PMC8057295 DOI: 10.3892/ijmm.2021.4939] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 03/10/2021] [Indexed: 01/07/2023] Open
Abstract
Cancers of the urinary tract, as well as those of the female and male reproductive systems, account for a large percentage of malignancies worldwide. Mortality is frequently affected by late diagnosis or therapeutic difficulties. The Sonic Hedgehog (SHH) pathway is an evolutionary conserved molecular cascade, which is mainly associated with the development of the central nervous system in fetal life. The present review aimed to provide an in‑depth summary of the SHH signaling pathway, including the characterization of its major components, the mechanism of its upstream regulation and non‑canonical activation, as well as its interactions with other cellular pathways. In addition, the three possible mechanisms of the cellular SHH cascade in cancer tissue are discussed. The aim of the present review was to summarize significant findings with regards to the expression of the SHH pathway components in kidney, bladder, ovarian, cervical and prostate cancer. Reports associated with common deficits and de‑regulations of the SHH pathway were summarized, despite the differences in molecular and histological patterns among these malignancies. However, currently, neither are SHH pathway elements included in panels of prognostic/therapeutic molecular patterns in any of the discussed cancers, nor have the drugs targeting SMO or GLIs been approved for therapy. The findings of the present review may support future studies on the treatment of and/or molecular targets for gynecological and genitourinary cancers.
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Affiliation(s)
| | | | - Piotr M. Wierzbicki
- Correspondence to: Dr Piotr M. Wierzbicki, Department of Histology, Faculty of Medicine, Medical University of Gdansk, ul. Debinki 1, 80211 Gdansk, Poland, E-mail:
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Ithal D, Sukumaran SK, Bhattacharjee D, Vemula A, Nadella R, Mahadevan J, Sud R, Viswanath B, Purushottam M, Jain S. Exome hits demystified: The next frontier. Asian J Psychiatr 2021; 59:102640. [PMID: 33892377 DOI: 10.1016/j.ajp.2021.102640] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 03/26/2021] [Indexed: 12/13/2022]
Abstract
Severe mental illnesses such as schizophrenia and bipolar disorder have complex inheritance patterns, involving both common and rare variants. Whole exome sequencing is a promising approach to find out the rare genetic variants. We had previously reported several rare variants in multiplex families with severe mental illnesses. The current article tries to summarise the biological processes and pattern of expression of genes harbouring the aforementioned variants, linking them to known clinical manifestations through a methodical narrative review. Of the 28 genes considered for this review from 7 families with multiple affected individuals, 6 genes are implicated in various neuropsychiatric manifestations including some variations in the brain morphology assessed by magnetic resonance imaging. Another 15 genes, though associated with neuropsychiatric manifestations, did not have established brain morphological changes whereas the remaining 7 genes did not have any previously recorded neuropsychiatric manifestations at all. Wnt/b-catenin signaling pathway was associated with 6 of these genes and PI3K/AKT, calcium signaling, ERK, RhoA and notch signaling pathways had at least 2 gene associations. We present a comprehensive review of biological and clinical knowledge about the genes previously reported in multiplex families with severe mental illness. A 'disease in dish approach' can be helpful to further explore the fundamental mechanisms.
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Affiliation(s)
- Dhruva Ithal
- Department of Psychiatry, National Institute of Mental Health and Neuro Sciences, Bengaluru, Karnataka, India
| | - Salil K Sukumaran
- Department of Psychiatry, National Institute of Mental Health and Neuro Sciences, Bengaluru, Karnataka, India
| | - Debanjan Bhattacharjee
- Department of Psychiatry, National Institute of Mental Health and Neuro Sciences, Bengaluru, Karnataka, India
| | - Alekhya Vemula
- Department of Psychiatry, National Institute of Mental Health and Neuro Sciences, Bengaluru, Karnataka, India
| | - Ravi Nadella
- Department of Psychiatry, National Institute of Mental Health and Neuro Sciences, Bengaluru, Karnataka, India
| | - Jayant Mahadevan
- Department of Psychiatry, National Institute of Mental Health and Neuro Sciences, Bengaluru, Karnataka, India
| | - Reeteka Sud
- Department of Psychiatry, National Institute of Mental Health and Neuro Sciences, Bengaluru, Karnataka, India
| | - Biju Viswanath
- Department of Psychiatry, National Institute of Mental Health and Neuro Sciences, Bengaluru, Karnataka, India
| | - Meera Purushottam
- Department of Psychiatry, National Institute of Mental Health and Neuro Sciences, Bengaluru, Karnataka, India.
| | - Sanjeev Jain
- Department of Psychiatry, National Institute of Mental Health and Neuro Sciences, Bengaluru, Karnataka, India
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Ma RR, Zhang H, Chen HF, Zhang GH, Tian YR, Gao P. MiR-19a/miR-96-mediated low expression of KIF26A suppresses metastasis by regulating FAK pathway in gastric cancer. Oncogene 2021; 40:2524-2538. [PMID: 33674746 DOI: 10.1038/s41388-020-01610-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 11/27/2020] [Accepted: 12/09/2020] [Indexed: 01/31/2023]
Abstract
Gastric cancer (GC) is one of the most common malignant neoplasms. Invasion and metastasis are the main causes of GC-related deaths. Recently, kinesins were discovered to be involved in tumor development. The aim of this study was to elucidate the roles of kinesin superfamily protein 26A (KIF26A) in GC and its underlying molecular mechanism in regulating tumor invasion and metastasis. Using real-time quantitative polymerase chain reaction (qPCR) and immunohistochemistry (IHC), we showed that KIF26A expression was lower in GC tissues without lymph node metastasis (LNM) than in nontumorous gastric mucosa, and even lower in GC tissues with LNM than in GC tissues without LNM. Functional experiments showed that KIF26A inhibited migration and invasion of GC cells. We further identified focal-adhesion kinase (FAK), phosphatidylinositol 3-kinase regulatory subunit alpha (PI3KR1), VAV3, Rac1 and p21-activated kinase 2, and β-PAK (PAK3) as downstream effectors of KIF26A in the focal-adhesion pathway, and we found that KIF26A could regulate FAK mRNA expression through inhibiting c-MYC by MAPK pathway. c-MYC could bind to the promoter of FAK and activate FAK transcription. Moreover, we found that KIF26A-mediated inactivation of the focal-adhesion pathway could reduce the occurrence of the epithelial-to-mesenchymal transition (EMT) by increasing expression of E-cadherin and reducing that of Snail. Luciferase assays and Western blotting revealed that miR-19a and miR-96 negatively regulate KIF26A. Finally, we found that decreased expression of KIF26A has been positively correlated with histological differentiation, Lauren classification, LNM, distal metastasis, and clinical stage, as well as poor survival in patients with GC. These data indicate that KIF26A could inhibit GC migration and invasion by regulating the focal-adhesion pathway and repressing the occurrence of EMT.
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Affiliation(s)
- Ran-Ran Ma
- Key Laboratory for Experimental Teratology of the Ministry of Education and Department of Pathology, School of Basic Medical Sciences, Shandong University, Jinan, PR China.,Department of Pathology, Qilu Hospital, Shandong University, Jinan, PR China
| | - Hui Zhang
- Key Laboratory for Experimental Teratology of the Ministry of Education and Department of Pathology, School of Basic Medical Sciences, Shandong University, Jinan, PR China.,Department of Pathology, Qilu Hospital, Shandong University, Jinan, PR China
| | - Hong-Fang Chen
- Key Laboratory for Experimental Teratology of the Ministry of Education and Department of Pathology, School of Basic Medical Sciences, Shandong University, Jinan, PR China.,Department of Pathology, Yidu Central Hospital of Weifang, Weifang, PR China
| | - Guo-Hao Zhang
- Key Laboratory for Experimental Teratology of the Ministry of Education and Department of Pathology, School of Basic Medical Sciences, Shandong University, Jinan, PR China
| | - Ya-Ru Tian
- Key Laboratory for Experimental Teratology of the Ministry of Education and Department of Pathology, School of Basic Medical Sciences, Shandong University, Jinan, PR China
| | - Peng Gao
- Key Laboratory for Experimental Teratology of the Ministry of Education and Department of Pathology, School of Basic Medical Sciences, Shandong University, Jinan, PR China. .,Department of Pathology, Qilu Hospital, Shandong University, Jinan, PR China.
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Hu Y, Wu MZ, Gu NJ, Xu HT, Li QC, Wu GP. Human papillomavirus 16 (HPV 16) E6 but not E7 inhibits the antitumor activity of LKB1 in lung cancer cells by downregulating the expression of KIF7. Thorac Cancer 2020; 11:3175-3180. [PMID: 32945133 PMCID: PMC7606012 DOI: 10.1111/1759-7714.13640] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 08/10/2020] [Accepted: 08/11/2020] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND The E6 and E7 proteins in human papillomavirus 16 (HPV 16) are the main oncogenes in the occurrence of lung cancer. In recent studies, we found that E6 and E7 downregulated the expression of LKB1 in lung cancer cells. However, it is still unclear how E6 and E7 regulate LKB1 in lung cancer cells. METHODS Double directional genetic manipulation and nuclear plasma separation technology were performed to explore the molecular mechanism of E6 and E7 inhibiting the antitumor activity of LKB1 in well-established lung cancer cell lines. RESULTS E6 but not E7 significantly downregulated the expression of tumor suppressor KIF7 at protein level, and the inhibition of KIF7 further reduced the expression of LKB1 both in the nuclei and in the cytoplasm, whereas reduced the expression of p-LKB1 in the cytoplasm only. This suggested that HPV 16 E6 but not E7 downregulates the antitumor activity of LKB1 by downregulating the expression of p-LKB1 in the cytoplasm only. CONCLUSIONS Here, we demonstrated for the first time that E6 but not E7 inhibits the antitumor activity of LKB1 in lung cancer cells by downregulating the expression of KIF7. Our findings provide new evidence to support the important role of KIF7 in the pathogenesis of lung cancer and suggests new therapeutic targets.
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Affiliation(s)
- Yue Hu
- Department of Pathology, The First Affiliated Hospital and College of Basic Medical Sciences, China Medical University, Shenyang, China.,Department of Pathology, First Hospital of Qinhuangdao, Qinhuangdao, China
| | - Ming-Zhe Wu
- Departments of Gynecology, The First Hospital of China Medical University, Shenyang, China
| | - Na-Jin Gu
- Department of Pathology, The First Affiliated Hospital and College of Basic Medical Sciences, China Medical University, Shenyang, China
| | - Hong-Tao Xu
- Department of Pathology, The First Affiliated Hospital and College of Basic Medical Sciences, China Medical University, Shenyang, China
| | - Qing-Chang Li
- Department of Pathology, The First Affiliated Hospital and College of Basic Medical Sciences, China Medical University, Shenyang, China
| | - Guang-Ping Wu
- Department of Pathology, The First Affiliated Hospital and College of Basic Medical Sciences, China Medical University, Shenyang, China
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Yao Y, Liu L, He W, Lin X, Zhang X, Lin Z, Zeng Z, Guo S. Low expression of KIF7 indicates poor prognosis in epithelial ovarian cancer. Cancer Biomark 2020; 26:481-489. [PMID: 31658044 DOI: 10.3233/cbm-190328] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The aim of the present study was to investigate kinesin family member 7 (KIF7) expression in epithelial ovarian cancer tissues (paraffin-embedded tissues and fresh) and to explore its expression, association with clinicopathological parameters and prognostic value in patients with epithelial ovarian cancer. A total of 113 paraffin-embedded tumor tissues of epithelial ovarian cancer patients diagnosed and operated at the memorial hospital of Sun Yat-sen University Between December 2009 and March 2017 and 41 paratumor tissues were collected for the present study and were assessed for KIF7 expression using immunohistochemistry. Furthermore, 22 fresh epithelial ovarian cancer tissues and their matched paratumor tissues were collected from the Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, between August 2013 and March 2019 and subjected to reverse-transcription quantitative PCR analysis to detect the mRNA expression of KIF7. The expression of KIF7 was lower in cancer tissues than in paratumor tissues, and KIF7 expression was associated with recurrence-free survival and overall survival in epithelial ovarian cancer patients. Furthermore, multivariate logistic regression analysis indicated that low KIF7 expression was an independent predictor of poor survival in patients with epithelial ovarian cancer. In conclusion, KIF7 has a tumor suppressor role in epithelial ovarian cancer and is a useful independent prognostic predictor. It may hold important value for the clinical diagnosis and treatment of epithelial ovarian cancer.
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Affiliation(s)
- Yaoshan Yao
- Department of Obstetrics and Gynecology, Third Affiliated Hospital, Southern Medical University, Guangzhou, Guangdong, China.,Department of Gynecology Oncology, First People's Hospital of Chenzhou, Chenzhou, Hunan, China.,Department of Obstetrics and Gynecology, Third Affiliated Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Longyang Liu
- Department of Gynecology, Integrated Hospital of Traditional Chinese Medicine, Southern Medical Universtiy, Guangzhou, Guangdong, China.,Department of Obstetrics and Gynecology, Third Affiliated Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Wenhua He
- Department of Cardiovascular Medicine, First People's Hospital of Chenzhou, Hunan, China
| | - Xian Lin
- Department of Oncology, Fujian Provincial Cancer Hospital, Fuzhou, Fujian, China
| | - Xuan Zhang
- Department of Gynecology Oncology, First People's Hospital of Chenzhou, Chenzhou, Hunan, China
| | - Zhongqiu Lin
- Department of Gynecology Oncology, The Memorial Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Zhaoyang Zeng
- Department of Gynecology, Integrated Hospital of Traditional Chinese Medicine, Southern Medical Universtiy, Guangzhou, Guangdong, China
| | - Suiqun Guo
- Department of Obstetrics and Gynecology, Third Affiliated Hospital, Southern Medical University, Guangzhou, Guangdong, China
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Li M, Cheng W, Nie T, Lai H, Hu X, Luo J, Li F, Li H. Selenoprotein K Mediates the Proliferation, Migration, and Invasion of Human Choriocarcinoma Cells by Negatively Regulating Human Chorionic Gonadotropin Expression via ERK, p38 MAPK, and Akt Signaling Pathway. Biol Trace Elem Res 2018; 184:47-59. [PMID: 28983820 DOI: 10.1007/s12011-017-1155-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 09/13/2017] [Indexed: 12/30/2022]
Abstract
Selenoprotein K (SelK), a member of selenoprotein family, is identified as a single endoplasmic reticulum (ER) transmembrane protein. Although over-expression of SelK inhibits adherence and migration of human gastric cancer BGC-823 cells, the effects of SelK in human choriocarcinoma (CCA) are not well understood. In this study, the expression levels of SelK in three CCA cell lines, BeWo, JEG-3, and JAR, were examined. The effects of silencing or over-expressing SelK on expression of human chorionic gonadotropin beta subunit (β-hCG) were detected by western blotting. The results show that the protein level of β-hCG was reciprocally regulated by down- or up-regulation of SelK (*P < 0.05; #P < 0.05). The proliferative, migratory, and invasive capabilities of JEG-3 cells with reduced or over-expressed SelK were then tested using the cell counting kit-8 (CCK-8), wound healing, and transwell chamber assays. We found that these cellular activities were markedly increased by the loss of SelK in JEG-3 cells. Conversely, over-expressing SelK in JEG-3 cells suppressed these phenotypes. In addition, SelK expression after down- or up-regulation of β-hCG was also measured. Surprisingly, we found that level of SelK was affected by β-hCG (*P < 0.05; #P < 0.05). The proliferation, migration, and invasion were determined in JEG-3 cells after each over-expression and reduction of β-hCG. The results confirmed that β-hCG functions as a promoter of human choriocarcinoma. Furthermore, ERK/p38 MAPK and Akt signaling pathways were found to involve in these cellular functions. This work suggests that SelK may act as a tumor suppressor in human choriocarcinoma cells by negatively regulating β-hCG expression via ERK, p38 MAPK, and Akt signaling pathways. These findings revealed that selenoprotein K may serve as a novel target for human choriocarcinoma therapy in vitro.
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Affiliation(s)
- Mengdi Li
- Department of Biochemistry and Molecular Biology, Basic Medical Science College, Harbin Medical University, 157 Baojian Road, Harbin, 150081, China
| | - Wanpeng Cheng
- Department of Clinical Laboratory, Qinhuangdao First Hospital, 258 Wenhua Road, Qinhuangdao, 066000, China
| | - Tingting Nie
- Department of Biochemistry and Molecular Biology, Basic Medical Science College, Harbin Medical University, 157 Baojian Road, Harbin, 150081, China
| | - Hehuan Lai
- Department of Biochemistry and Molecular Biology, Basic Medical Science College, Harbin Medical University, 157 Baojian Road, Harbin, 150081, China
| | - Xiaoyan Hu
- Department of Biochemistry and Molecular Biology, Basic Medical Science College, Harbin Medical University, 157 Baojian Road, Harbin, 150081, China
| | - Jincheng Luo
- Department of Biochemistry and Molecular Biology, Basic Medical Science College, Harbin Medical University, 157 Baojian Road, Harbin, 150081, China
| | - Fenglan Li
- Department of Biochemistry and Molecular Biology, Basic Medical Science College, Harbin Medical University, 157 Baojian Road, Harbin, 150081, China
| | - Hui Li
- Department of Biochemistry and Molecular Biology, Basic Medical Science College, Harbin Medical University, 157 Baojian Road, Harbin, 150081, China.
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KIF7 attenuates prostate tumor growth through LKB1-mediated AKT inhibition. Oncotarget 2017; 8:54558-54571. [PMID: 28903364 PMCID: PMC5589603 DOI: 10.18632/oncotarget.17421] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Accepted: 01/10/2017] [Indexed: 12/26/2022] Open
Abstract
This study investigated kinesin family member 7 (KIF7) expression and function in prostate cancer (PCa). Our results showed that KIF7 was significantly downregulated in PCa, compared with normal, benign prostatic hyperplasia and prostate intraepithelial neoplasia tissues, partially through promoter hypermethylation. We further investigated the effects of KIF7 coiled coil (CC) domain and motor domain (MD) on PCa development in vitro and in vivo. Our results showed that KIF7-CC but not KIF7-MD significantly attenuated proliferation and colony formation, impeded migration and invasion, induced apoptosis and sensitized PCa cells to paclitaxel. Further analysis revealed that KIF7-CC enhanced LKB1 expression and phosphorylation at Ser428, which induced PTEN phosphorylation at Ser380/Thr382/383 and consequently blocked AKT phosphorylation at Ser473. Downregulation of LKB1 significantly attenuated the suppressive effects of KIF7-CC on cell proliferation, colony formation and AKT phosphorylation. Furthermore, our in vivo studies showed that KIF7-CC reduced prostate tumorigenesis in cell-derived xenografts. Downregulation of LKB1 abrogated the anti-tumor effects of KIF7-CC in these xenografts. Taken together, these findings provide the first evidence to support the role of KIF7 as a negative regulator that inhibits PCa development partially through LKB1-mediated AKT inhibition.
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Downregulation of Mitofusin 2 in Placenta Is Related to Preeclampsia. BIOMED RESEARCH INTERNATIONAL 2016; 2016:6323086. [PMID: 26942197 PMCID: PMC4752976 DOI: 10.1155/2016/6323086] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/12/2015] [Revised: 12/01/2015] [Accepted: 12/02/2015] [Indexed: 12/21/2022]
Abstract
Background. Mitofusin 2 (Mfn2) is a novel mitochondrial protein that is implicated in cellular proliferation and metabolism; however, the role of Mfn2 in preeclampsia (PE) remains unknown. This study aimed to explore the relationship between Mfn2 and PE. Method. Preeclamptic and normal pregnancies were enrolled in a comparative study. The expression of Mfn2 in placenta was detected by qRT-PCR. And the mitochondrial function was detected by ATP assay. Then TEV-1 cells were cultured in hypoxic conditions. mRNA and protein expressions of Mfn2 were detected by qRT-PCR and western blot separately. Cells' viability was detected by MTT. And the mitochondrial function was detected by ATP and mitochondrial membrane potential (MMP) assay. We further knocked down the Mfn2 gene in TEV-1 cells and evaluated the cells' viability. Results. Mfn2 and ATP expressions were significantly decreased in preeclamptic placentae compared to normal placentae. Mfn2 expression level and the viability of TEV-1 cells were reduced during hypoxic conditions. TEV-1 cells' viability, ATP, and MMP levels were also significantly decreased after knockdown of the Mfn2 gene. Conclusions. These results suggest that defects in Mfn2 could cause mitochondrial dysfunction and decrease trophoblastic cells' viability. Therefore, Mfn2 may be functionally involved in the pathogenesis of PE.
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Li S, Guan J, Ge M, Huang P, Lin Y, Gan X. Intestinal mucosal injury induced by tryptase-activated protease-activated receptor 2 requires β-arrestin-2 in vitro. Mol Med Rep 2015; 12:7181-7. [PMID: 26398586 DOI: 10.3892/mmr.2015.4325] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2014] [Accepted: 09/01/2015] [Indexed: 11/06/2022] Open
Abstract
Tryptase exacerbates intestinal ischemia-reperfusion injury, however, the direct role of tryptase in intestinal mucosal injury and the underlying mechanism remains largely unknown. Protease-activated receptor 2 (PAR‑2), commonly activated by tryptase, interacts with various adaptor proteins, including β‑arrestin‑2. The present study aimed to determine whether tryptase is capable of inducing intestinal mucosal cell injury via PAR‑2 activation and to define the role of β‑arrestin‑2 in the process of injury. The IEC‑6 rat intestinal epithelial cell line was challenged by tryptase stimulation. Cell viability, lactate dehydrogenase (LDH) activity and apoptosis were analyzed to determine the severity of cell injury. Injury was also evaluated following treatments with specific PAR‑2 and extracellular signal‑related kinases (ERK) inhibitors, and knockdown of β‑arrestin‑2. PAR‑2, ERK and β‑arrestin‑2 protein expression levels were evaluated. Tryptase treatment (100 and 1,000 ng/ml) resulted in IEC‑6 cell injury, as demonstrated by significant reductions in cell viability, accompanied by concomitant increases in LDH activity and levels of cleaved caspase‑3 protein expression. Furthermore, tryptase treatment led to a marked increase in PAR‑2 and phosphorylated‑ERK expression, and exposure to specific PAR‑2 and ERK inhibitors eliminated the changes induced by tryptase. Knockdown of β‑arrestin‑2 blocked tryptase‑mediated cell injury, whereas tryptase exerted no influence on β‑arrestin‑2 expression in IEC‑6 cells. These data indicate that tryptase may directly damage IEC‑6 cells via PAR-2 and the downstream activation of ERK, and demonstrate that the signaling pathway requires β-arrestin-2.
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Affiliation(s)
- Shun Li
- Department of Anesthesiology, The Third Affiliated Hospital, Sun Yat‑sen University, Guangzhou, Guangdong 510630, P.R. China
| | - Jianqiang Guan
- Department of Anesthesiology, The Third Affiliated Hospital, Sun Yat‑sen University, Guangzhou, Guangdong 510630, P.R. China
| | - Mian Ge
- Department of Anesthesiology, The Third Affiliated Hospital, Sun Yat‑sen University, Guangzhou, Guangdong 510630, P.R. China
| | - Pinjie Huang
- Department of Anesthesiology, The Third Affiliated Hospital, Sun Yat‑sen University, Guangzhou, Guangdong 510630, P.R. China
| | - Yiquan Lin
- Department of Anesthesiology, Zhongshan Ophthalmic Center, Sun Yat‑sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Xiaoliang Gan
- Department of Anesthesiology, Zhongshan Ophthalmic Center, Sun Yat‑sen University, Guangzhou, Guangdong 510060, P.R. China
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