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Janjua D, Thakur K, Aggarwal N, Chaudhary A, Yadav J, Chhokar A, Tripathi T, Joshi U, Senrung A, Bharti AC. Prognostic and therapeutic potential of STAT3: Opportunities and challenges in targeting HPV-mediated cervical carcinogenesis. Crit Rev Oncol Hematol 2024; 197:104346. [PMID: 38608913 DOI: 10.1016/j.critrevonc.2024.104346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 03/28/2024] [Accepted: 04/04/2024] [Indexed: 04/14/2024] Open
Abstract
Cervical cancer (CaCx) ranks as the fourth most prevalent cancer among women globally. Persistent infection of high-risk human papillomaviruses (HR-HPVs) is major etiological factor associated with CaCx. Signal Transducer and Activator of Transcription 3 (STAT3), a prominent member of the STAT family, has emerged as independent oncogenic driver. It is a target of many oncogenic viruses including HPV. How STAT3 influences HPV viral gene expression or gets affected by HPV is an area of active investigation. A better understanding of host-virus interaction will provide a prognostic and therapeutic window for CaCx control and management. In this comprehensive review, we delve into carcinogenic role of STAT3 in development of HPV-induced CaCx. With an emphasis on fascinating interplay between STAT3 and HPV genome, the review explores the diverse array of opportunities and challenges associated with this field to harness the prognostic and therapeutic potential of STAT3 in CaCx.
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Affiliation(s)
- Divya Janjua
- Molecular Oncology Laboratory, Department of Zoology, University of Delhi (North Campus), New Delhi, India
| | - Kulbhushan Thakur
- Molecular Oncology Laboratory, Department of Zoology, University of Delhi (North Campus), New Delhi, India
| | - Nikita Aggarwal
- Molecular Oncology Laboratory, Department of Zoology, University of Delhi (North Campus), New Delhi, India
| | - Apoorva Chaudhary
- Molecular Oncology Laboratory, Department of Zoology, University of Delhi (North Campus), New Delhi, India
| | - Joni Yadav
- Molecular Oncology Laboratory, Department of Zoology, University of Delhi (North Campus), New Delhi, India
| | - Arun Chhokar
- Molecular Oncology Laboratory, Department of Zoology, University of Delhi (North Campus), New Delhi, India; Department of Zoology, Deshbandhu College, University of Delhi, Delhi, India
| | - Tanya Tripathi
- Molecular Oncology Laboratory, Department of Zoology, University of Delhi (North Campus), New Delhi, India
| | - Udit Joshi
- Molecular Oncology Laboratory, Department of Zoology, University of Delhi (North Campus), New Delhi, India
| | - Anna Senrung
- Molecular Oncology Laboratory, Department of Zoology, University of Delhi (North Campus), New Delhi, India; Department of Zoology, Daulat Ram College, University of Delhi, Delhi, India
| | - Alok Chandra Bharti
- Molecular Oncology Laboratory, Department of Zoology, University of Delhi (North Campus), New Delhi, India.
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Endale HT, Mariye YF, Negash HK, Hassen FS, Asrat WB, Mengstie TA, Tesfaye W. MiRNA in cervical cancer: Diagnosis to therapy: Systematic review. Heliyon 2024; 10:e24398. [PMID: 38317930 PMCID: PMC10839805 DOI: 10.1016/j.heliyon.2024.e24398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 12/22/2023] [Accepted: 01/08/2024] [Indexed: 02/07/2024] Open
Abstract
Cancers are one of the most public health problems worldwide. Among them, cervical cancer (CC) is the fourth most prevalent cancer with 604 000 new cases and 342 000 deaths. Mostly, it is associated with Human papillomavirus (HPV). It has been caused by the aggregation of genetic and epigenetic modifications in cervical epithelial cells. Although genetic mutations are given great attention for the carcinogenesis of CC, epigenetic changes have emerged as a hotspot area for CC biomarkers research with great implications for early diagnosis, prognosis, and treatment response prediction of the disease. Recently, there are several studies focused on miRNAs as biomarkers of cervical cancer. However, the precise function of miRNAs in the development of cervical cancer is not still completely understood, particularly when it comes to unconventional sampling materials like cervical mucus and plasma serum. Hence, this review article will give a summary of the miRNAs profiles that emerge at different stages of cervical cancer progression and their downstream effects on target genes and associated signaling pathways. Finally, these results may provide insight into the use of miRNAs as biomarkers for the prediction or diagnosis of cervical cancer or the development of miRNA-based therapeutics against cervical cancer.
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Affiliation(s)
- Hiwot Tezera Endale
- Department of Biochemistry, School of Medicine, College of Medicine & Health Sciences, University of Gondar, Ethiopia
| | - Yitbarek Fantahun Mariye
- Department of Obstetrics & Gynecology, School of Medicine, College of Medicine & Health Sciences, Addis Ababa University, Ethiopia
| | - Habtu Kifle Negash
- Department of Human Anatomy, School of Medicine, College of Medicine & Health Sciences, University of Gondar, Ethiopia
| | - Fethiya Seid Hassen
- Department of Biochemistry, School of Medicine, College of Medicine & Health Sciences, University of Gondar, Ethiopia
| | - Wastina Bitewlign Asrat
- Department of Biochemistry, School of Medicine, College of Medicine & Health Sciences, University of Gondar, Ethiopia
| | - Tiget Ayelgn Mengstie
- Department of Biochemistry, School of Medicine, College of Medicine & Health Sciences, University of Gondar, Ethiopia
| | - Winta Tesfaye
- Department of Human Physiology, School of Medicine, College of Medicine & Health Sciences, University of Gondar, Ethiopia
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Thakur K, Janjua D, Aggarwal N, Chhokar A, Yadav J, Tripathi T, Chaudhary A, Senrung A, Shrivastav A, Bharti AC. Physical interaction between STAT3 and AP1 in cervical carcinogenesis: Implications in HPV transcription control. Biochim Biophys Acta Mol Basis Dis 2023; 1869:166817. [PMID: 37532113 DOI: 10.1016/j.bbadis.2023.166817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 07/07/2023] [Accepted: 07/19/2023] [Indexed: 08/04/2023]
Abstract
The constitutive activation and aberrant expression of Signal Transducer and Activator of Transcription 3 (STAT3) plays a key role in initiation and progression of cervical cancer (CaCx). How STAT3 influences HPV transcription is poorly defined. In the present study, we probed direct and indirect interactions of STAT3 with HPV16/18 LCR. In silico assessment of cis-elements present on LCR revealed the presence of potential STAT3 binding motifs. However, experimental validation by ChIP-PCR could not confirm any specific STAT3 binding on HPV16 LCR. Protein-protein interaction (PPI) network analysis of STAT3 with other host transcription factors that bind LCR, highlighted the physical association of STAT3 with c-FOS and c-JUN. This was further confirmed in vitro by co-immunoprecipitation, where STAT3 co-immunoprecipitated with c-FOS and c-JUN in CaCx cells. The result was supported by immunocytochemical analysis and colocalization of STAT3 with c-FOS and c-JUN. Positive signals in proximity ligation assay validated physical interaction and colocalization of STAT3 with AP1. Colocalization of STAT3 with c-FOS and c-JUN increased upon IL-6 treatment and decreased post-Stattic treatment. Alteration of STAT3 expression affected the subcellular localization of c-FOS and c-JUN, along with the expression of viral oncoproteins (E6 and E7) in CaCx cells. High expression of c-JUN in tumor tissues correlated with poor prognosis in both HPV16 and HPV18 CaCx cohort whereas high expression of STAT3 correlated with poor prognosis in HPV18 CaCx lesions only. Overall, the data suggest an indirect interaction of STAT3 with HPV LCR via c-FOS and c-JUN and potentiate transcription of viral oncoproteins.
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Affiliation(s)
- Kulbhushan Thakur
- Molecular Oncology Laboratory, Department of Zoology, University of Delhi (North Campus), New Delhi, India
| | - Divya Janjua
- Molecular Oncology Laboratory, Department of Zoology, University of Delhi (North Campus), New Delhi, India
| | - Nikita Aggarwal
- Molecular Oncology Laboratory, Department of Zoology, University of Delhi (North Campus), New Delhi, India
| | - Arun Chhokar
- Molecular Oncology Laboratory, Department of Zoology, University of Delhi (North Campus), New Delhi, India; Department of Zoology, Deshbandhu College, University of Delhi, Delhi, India
| | - Joni Yadav
- Molecular Oncology Laboratory, Department of Zoology, University of Delhi (North Campus), New Delhi, India
| | - Tanya Tripathi
- Molecular Oncology Laboratory, Department of Zoology, University of Delhi (North Campus), New Delhi, India
| | - Apoorva Chaudhary
- Molecular Oncology Laboratory, Department of Zoology, University of Delhi (North Campus), New Delhi, India
| | - Anna Senrung
- Molecular Oncology Laboratory, Department of Zoology, University of Delhi (North Campus), New Delhi, India
| | - Anuraag Shrivastav
- Department of Biology, The University of Winnipeg, 515 Portage Avenue, Winnipeg, Manitoba, Canada; Paul Albrechtsen Research Institute CCMB, 675 McDermot Ave, Winnipeg, Manitoba, Canada
| | - Alok Chandra Bharti
- Molecular Oncology Laboratory, Department of Zoology, University of Delhi (North Campus), New Delhi, India.
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Thakur K, Janjua D, Shishodia G, Chhokar A, Aggarwal N, Yadav J, Tripathi T, Chaudhary A, Senrung A, Bharti AC. Investigation of molecular mechanisms underlying JAK/STAT signaling pathway in HPV-induced cervical carcinogenesis using 'omics' approach. Med Oncol 2022; 39:255. [PMID: 36224441 DOI: 10.1007/s12032-022-01854-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 09/12/2022] [Indexed: 11/24/2022]
Abstract
The precise mechanism of action of Janus Kinases (JAK)/Signal Transducer and activator of Transcription (STAT) signaling in human papillomavirus (HPV)-associated cervical cancer (CaCx) is poorly defined. The present study dissected the underlying components of JAK/STAT signaling in HPV-positive cervical neoplasms. Whole transcriptome profile of CaCx cohort from TCGA database revealed elevated STAT3 and its impact on CaCx patients' survival. Using the RT2 Profiler PCR Array, we analyzed 84 genes of interest associated with JAK/STAT signaling in mRNA derived from HPV-negative and HPV-positive cervical lesions which revealed 21 differentially expressed genes (DEGs). Analyses of DEGs using the Database for Annotation, Visualization and Integrated Discovery tool indicated maximum genes enriched in immune response and negative regulation of apoptotic process. Protein-protein network analysis indicated IL4, STAT5A, STAT4, and JAK3 to be the key genes in the interaction network. Further, 7 key DEGs (IL4R, IRF1, EGFR, OAS1, PIAS1, STAT4, and STAT5A) were validated in TCGA cohort using R2 platform. These genes were differentially expressed among HPV-positive cervical tissues and their correlation with STAT3 was established. EGFR and IL4R showed a comparatively strong correlation with STAT3 that supports their involvement in pathogenesis of CaCx. Finally, the Kaplan-Meier analysis established the prognostic association of the key DEGs, in CaCx cohort. The STAT3 and associated key genes discovered from our study establish a strong pathogenic role of JAK/STAT3 pathway in HPV-mediated cervical carcinogenesis.
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Affiliation(s)
- Kulbhushan Thakur
- Molecular Oncology Laboratory, Department of Zoology, University of Delhi (North Campus), New Delhi, 110007, India
| | - Divya Janjua
- Molecular Oncology Laboratory, Department of Zoology, University of Delhi (North Campus), New Delhi, 110007, India
| | - Gauri Shishodia
- Division of Molecular Oncology, Institute of Cytology and Preventive Oncology, Noida, India.,Department of Biochemistry, UT Southwestern Medical Center, Dallas, TX, USA
| | - Arun Chhokar
- Molecular Oncology Laboratory, Department of Zoology, University of Delhi (North Campus), New Delhi, 110007, India
| | - Nikita Aggarwal
- Molecular Oncology Laboratory, Department of Zoology, University of Delhi (North Campus), New Delhi, 110007, India
| | - Joni Yadav
- Molecular Oncology Laboratory, Department of Zoology, University of Delhi (North Campus), New Delhi, 110007, India
| | - Tanya Tripathi
- Molecular Oncology Laboratory, Department of Zoology, University of Delhi (North Campus), New Delhi, 110007, India
| | - Apoorva Chaudhary
- Molecular Oncology Laboratory, Department of Zoology, University of Delhi (North Campus), New Delhi, 110007, India
| | - Anna Senrung
- Molecular Oncology Laboratory, Department of Zoology, University of Delhi (North Campus), New Delhi, 110007, India
| | - Alok Chandra Bharti
- Molecular Oncology Laboratory, Department of Zoology, University of Delhi (North Campus), New Delhi, 110007, India. .,Division of Molecular Oncology, Institute of Cytology and Preventive Oncology, Noida, India.
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Zhuang M, Ding X, Song W, Chen H, Guan H, Yu Y, Zhang Z, Dong X. Correlation of IL-6 and JAK2/STAT3 signaling pathway with prognosis of nasopharyngeal carcinoma patients. Aging (Albany NY) 2021; 13:16667-16683. [PMID: 34165442 PMCID: PMC8266356 DOI: 10.18632/aging.203186] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 05/24/2021] [Indexed: 01/17/2023]
Abstract
IL-6 is reported to be the main upstream activator, instead of the downstream target of JAK2/STAT3. This study is intended to explore the correlation of IL-6 and JAK2/STAT3 signaling pathway with clinicopathological features and prognosis in nasopharyngeal carcinoma (NPC). First, NPC tissues and normal nasopharyngeal epithelial tissues were obtained from 117 NPC patients. Next, we detected expression levels of IL-6 in serum and those of STAT3, p-STAT3, JAK2, p-JAK2 and CyclinD1 in tissues. A follow-up was conducted in all the patients and the survival was analyzed. To verify the correlation of IL-6 and JAK2/STAT3 pathway, CNE-1 and SUNE1 NPC cells were interpreted with IL-6 and JAK2/STAT3 signaling pathway inhibitor AG490 to detect cell viability, migration and invasion. We observed thatIL-6 increased in serum of NPC patients. The expressions of IL-6, STAT3, p-STAT3, JAK2, p-JAK2 and CyclinD1 in NPC tissues were higher and correlated with TNM stage and lymph node metastasis (LNM). Survival rates were reduced in patients with positive expressions of IL-6, STAT3, p-STAT3, JAK2, p-JAK2 and CyclinD1. LNM and positive expressions of IL-6 and p-STAT3 were risk factors for poor prognosis of NPC. Besides, recombinant human IL-6 promoted cell proliferation, invasion and migration while AG490 inhibited cell proliferation, invasion and migration in CNE-1 and SUNE1 NPC cells. The results demonstrated that increased IL-6 expression and the activated JAK2/STAT3 signaling pathway had effects on prognosis and reduced the survival time in NPC patients, which provide a potential target for the treatment of NPC.
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Affiliation(s)
- Mengqi Zhuang
- Department of Oncology, The Fourth People's Hospital of Jinan, Jinan 250031, PR China
| | - Xiaotong Ding
- Department of Oncology, Jinan Fuda Cancer Hospital, Jinan 250033, PR China
| | - Wenli Song
- Department of Clinical Laboratory, The Fourth People's Hospital of Jinan, Jinan 250031, PR China
| | - Huimin Chen
- Department of Radiation Neurology, The Fourth People's Hospital of Jinan, Jinan 250031, PR China
| | - Hui Guan
- Department of Radiation Oncology, The Fourth People's Hospital of Jinan, Jinan 250031, PR China
| | - Yang Yu
- School of Graduate Studies, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 271099, PR China
| | - Zicheng Zhang
- Department of Radiation Oncology, Shenzhen Traditional Chinese Medicine Hospital, The Fourth Clinical Medical of Guangzhou University of Chinese Medicine, Shenzhen 518033, PR China
| | - Xinzhe Dong
- Department of Radiation Oncology, Qilu Hospital of Shandong University, Jinan 250012, PR China
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Floberg JM, Zhang J, Muhammad N, DeWees TA, Inkman M, Chen K, Lin AJ, Rashmi R, Jayachandran K, Edelson BT, Siegel BA, Dehdashti F, Grigsby PW, Markovina S, Schwarz JK. Standardized Uptake Value for 18F-Fluorodeoxyglucose Is a Marker of Inflammatory State and Immune Infiltrate in Cervical Cancer. Clin Cancer Res 2021; 27:4245-4255. [PMID: 33820781 DOI: 10.1158/1078-0432.ccr-20-4450] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 02/09/2021] [Accepted: 04/01/2021] [Indexed: 01/10/2023]
Abstract
PURPOSE Chemoradiotherapy for locally advanced cervical cancer fails in over a third of patients. Biomarkers with therapeutic implications are therefore needed. We investigated the relationship between an established prognostic marker, maximum standardized uptake value (SUVmax) on 18F-fluorodeoxyglucose positron emission tomography, and the inflammatory and immune state of cervical cancers. EXPERIMENTAL DESIGN An SUVmax most prognostic for freedom from progression (FFP) was identified and compared with known prognostic clinical variables in a cohort of 318 patients treated with definitive radiation with prospectively collected clinical data. Gene set enrichment analysis (GSEA) and CIBERSORT of whole-transcriptome data from 68 patients were used to identify biological pathways and immune cell subpopulations associated with high SUVmax. IHC using a tissue microarray (TMA, N = 82) was used to validate the CIBERSORT findings. The impact of macrophages on cervical cancer glucose metabolism was investigated in coculture experiments. RESULTS SUVmax <11.4 was most prognostic for FFP (P = 0.001). The GSEA showed that high SUVmax is associated with increased gene expression of inflammatory pathways, including JAK/STAT3 signaling. CIBERSORT and CD68 staining of the TMA showed high SUVmax tumors are characterized by a monocyte-predominant immune infiltrate. Coculture of cervical cancer cells with macrophages or macrophage-conditioned media altered glucose uptake, and IL6 and JAK/STAT3 signaling contribute to this effect. CONCLUSIONS SUVmax is a prognostic marker in cervical cancer that is associated with activation of inflammatory pathways and tumor infiltration of myeloid-derived immune cells, particularly macrophages. Macrophages contribute to changes in cervical cancer glucose metabolism.See related commentary by Williamson et al., p. 4136.
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Affiliation(s)
- John M Floberg
- Department of Radiation Oncology, Washington University School of Medicine, St. Louis, Missouri.,Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Jin Zhang
- Department of Radiation Oncology, Washington University School of Medicine, St. Louis, Missouri
| | - Naoshad Muhammad
- Department of Radiation Oncology, Washington University School of Medicine, St. Louis, Missouri
| | - Todd A DeWees
- Division of Biomedical Statistics and Informatics, Mayo Clinic, Phoenix, Arizona
| | - Matthew Inkman
- Department of Radiation Oncology, Washington University School of Medicine, St. Louis, Missouri
| | - Kevin Chen
- Washington University School of Medicine, St. Louis, Missouri
| | - Alexander J Lin
- Department of Radiation Oncology, Washington University School of Medicine, St. Louis, Missouri
| | - Ramachandran Rashmi
- Department of Radiation Oncology, Washington University School of Medicine, St. Louis, Missouri
| | - Kay Jayachandran
- Department of Radiation Oncology, Washington University School of Medicine, St. Louis, Missouri
| | - Brian T Edelson
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri
| | - Barry A Siegel
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, Missouri.,Alvin J. Siteman Cancer Center, Washington University School of Medicine, St. Louis, Missouri
| | - Farrokh Dehdashti
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, Missouri.,Alvin J. Siteman Cancer Center, Washington University School of Medicine, St. Louis, Missouri
| | - Perry W Grigsby
- Department of Radiation Oncology, Washington University School of Medicine, St. Louis, Missouri.,Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, Missouri.,Alvin J. Siteman Cancer Center, Washington University School of Medicine, St. Louis, Missouri
| | - Stephanie Markovina
- Department of Radiation Oncology, Washington University School of Medicine, St. Louis, Missouri.,Alvin J. Siteman Cancer Center, Washington University School of Medicine, St. Louis, Missouri
| | - Julie K Schwarz
- Department of Radiation Oncology, Washington University School of Medicine, St. Louis, Missouri. .,Alvin J. Siteman Cancer Center, Washington University School of Medicine, St. Louis, Missouri.,Department of Cell Biology and Physiology, Washington University School of Medicine, St. Louis, Missouri
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Wang Q, Vattai A, Vilsmaier T, Kaltofen T, Steger A, Mayr D, Mahner S, Jeschke U, Hildegard Heidegger H. Immunogenomic Identification for Predicting the Prognosis of Cervical Cancer Patients. Int J Mol Sci 2021; 22:2442. [PMID: 33671013 DOI: 10.3390/ijms22052442] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 02/22/2021] [Accepted: 02/24/2021] [Indexed: 12/12/2022] Open
Abstract
Cervical cancer is primarily caused by the infection of high-risk human papillomavirus (hrHPV). Moreover, tumor immune microenvironment plays a significant role in the tumorigenesis of cervical cancer. Therefore, it is necessary to comprehensively identify predictive biomarkers from immunogenomics associated with cervical cancer prognosis. The Cancer Genome Atlas (TCGA) public database has stored abundant sequencing or microarray data, and clinical data, offering a feasible and reliable approach for this study. In the present study, gene profile and clinical data were downloaded from TCGA, and the Immunology Database and Analysis Portal (ImmPort) database. Wilcoxon-test was used to compare the difference in gene expression. Univariate analysis was adopted to identify immune-related genes (IRGs) and transcription factors (TFs) correlated with survival. A prognostic prediction model was established by multivariate cox analysis. The regulatory network was constructed and visualized by correlation analysis and Cytoscape, respectively. Gene functional enrichment analysis was performed by Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG). A total of 204 differentially expressed IRGs were identified, and 22 of them were significantly associated with the survival of cervical cancer. These 22 IRGs were actively involved in the JAK-STAT pathway. A prognostic model based on 10 IRGs (APOD, TFRC, GRN, CSK, HDAC1, NFATC4, BMP6, IL17RD, IL3RA, and LEPR) performed moderately and steadily in squamous cell carcinoma (SCC) patients with FIGO stage I, regardless of the age and grade. Taken together, a risk score model consisting of 10 novel genes capable of predicting survival in SCC patients was identified. Moreover, the regulatory network of IRGs associated with survival (SIRGs) and their TFs provided potential molecular targets.
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Hou Y, Li H, Huo W. MicroRNA-495 alleviates ulcerative interstitial cystitis via inactivating the JAK-STAT signaling pathway by inhibiting JAK3. Int Urogynecol J 2021; 32:1253-63. [PMID: 33416962 DOI: 10.1007/s00192-020-04593-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 10/26/2020] [Indexed: 10/22/2022]
Abstract
INTRODUCTION AND HYPOTHESIS As a notable chronic disorder, the incidence of interstitial cystitis (IC) has been documented to have increased among the female population with activity in microRNA-495 (miR-495) implicated in this disease. The current study was aimed at elucidating the effects associated with miR-495 on the inflammatory response and bladder fibrosis in rats with ulcerative IC via the JAK-STAT pathway by targeting JAK3. METHODS Ulcerative IC rat models were established. The targeting relationship between JAK3 and miR-495 was evaluated using luciferase reporter assay. After gain- or loss-of-function assays, mast-cell infiltration was assessed using toluidine blue staining, bladder fibrosis using Masson staining, and NO content using nitrate reductase method. JAK3 protein expression was detected by immunohistochemistry, JAK3, STAT1, STAT3, TGFβ-1, Col-I, Col-III, JAK1, JAK2, p-STAT1, and p-STAT3 expression by RT-qPCR and Western blot analysis, and serum IL-6, IL-8, IL-10, IL-17, and TNF-α levels in rats by ELISA. RESULTS Following transfection of overexpressed miR-495 or siRNA-JAK3, a diminished degree of mast-cell infiltration, number of mast cells, bladder fibrosis, NO content, JAK3-positive expression, mRNA expression of JAK3, STAT1, STAT3, TGFβ-1, Col-I, Col-III, protein expression of JAK1, JAK2, JAK3, p-STAT1, p-STAT3, and expression of IL-6, IL-8, IL-10, IL-17, and TNF-α were identified. CONCLUSIONS Collectively, our key findings provide evidence supporting the notion that the overexpression of miR-495 ameliorates inflammatory response and bladder fibrosis in ulcerative IC rat models via inactivation of the JAK-STAT signaling pathway by inhibiting JAK3.
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Shen S, Zhang S, Liu P, Wang J, Du H. Potential role of microRNAs in the treatment and diagnosis of cervical cancer. Cancer Genet 2020; 248-249:25-30. [DOI: 10.1016/j.cancergen.2020.09.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 08/01/2020] [Accepted: 09/20/2020] [Indexed: 12/23/2022]
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10
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Hao Y, Yan Z, Zhang A, Hu S, Wang N, Luo XG, Ma W, Zhang TC, He H. IL-6/STAT3 mediates the HPV18 E6/E7 stimulated upregulation of MALAT1 gene in cervical cancer HeLa cells. Virus Res 2020; 281:197907. [DOI: 10.1016/j.virusres.2020.197907] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Revised: 01/23/2020] [Accepted: 02/26/2020] [Indexed: 12/25/2022]
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Li LW, Na C, Tian SY, Chen J, Ma R, Gao Y, Lou G. Ellagic acid induces HeLa cell apoptosis via regulating signal transducer and activator of transcription 3 signaling. Exp Ther Med 2018; 16:29-36. [PMID: 29896225 PMCID: PMC5995030 DOI: 10.3892/etm.2018.6182] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 06/06/2017] [Indexed: 02/06/2023] Open
Abstract
Ellagic acid has been reported to possess various activities, including anti-inflammatory, anti-oxidative, antiviral and anticancer abilities. However, the effect and underlying molecular mechanism of ellagic acid on cervical carcinoma remain unclear. Therefore, the present study aimed to investigate the effects of ellagic acid on human cervical carcinoma cells and the molecular mechanism involved. The present study assessed the survival of HeLa cells cultured in vitro using an MTT assay. Apoptosis rate and cell cycle of HaLa cells were measured using an Annexin V-Fluorescein isothiocyanate/propidium iodide Apoptosis Detection and Cell Cycle Analysis kits, respectively, following treatment with varying concentrations of ellagic acid. Further effects of ellagic acid on HeLa cells was assessed using flow cytometry and western blotting. Ellagic acid treatment significantly inhibited cell proliferation of the human cervical carcinoma HeLa, SiHa and C33A cells. In HeLa cells, it was observed that ellagic acid arrested the cell cycle at G1 phase, induced cell apoptosis, suppressed the phosphorylation of Janus kinase 2 and signal transducer and activator of transcription 3 (STAT3), as well as modulated the expression of associated proteins. Collectively, the results of the present study provide evidence that ellagic acid inhibits cervical carcinoma cell proliferation, and induces apoptosis and cell cycle arrest at G1 phase possibly via the regulation of STAT3 signaling.
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Affiliation(s)
- Lian-Wei Li
- Department of Gynecology, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang 150081, P.R. China
| | - Chao Na
- Department of Integrated TCM and Western Medicine, Heilongjiang Provincial Hospital, Harbin, Heilongjiang 150036, P.R. China
| | - Song-Yu Tian
- Department of Gynecology, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang 150081, P.R. China
| | - Jie Chen
- Department of Gynecology, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang 150081, P.R. China
| | - Rong Ma
- Department of Gynecology, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang 150081, P.R. China
| | - Ying Gao
- Department of Gynecology, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang 150081, P.R. China
| | - Ge Lou
- Department of Gynecology, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang 150081, P.R. China
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Fan Z, Cui H, Xu X, Lin Z, Zhang X, Kang L, Han B, Meng J, Yan Z, Yan X, Jiao S. MiR-125a suppresses tumor growth, invasion and metastasis in cervical cancer by targeting STAT3. Oncotarget 2016; 6:25266-80. [PMID: 26389681 PMCID: PMC4694830 DOI: 10.18632/oncotarget.4457] [Citation(s) in RCA: 114] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Accepted: 06/30/2015] [Indexed: 12/15/2022] Open
Abstract
MiR-125a has been characterized as a tumor suppressor in several cancers. However, the role of miR-125a in cervical cancer is unknown. In this study, we found the expression of miR-125a was downregulated in cervical cancer patients, and negatively correlated with the tumor size, FIGO stage, and preoperative metastasis. Kaplan-Meier analysis showed that miR-125a expression predicted favorable outcome for cervical cancer patients. Dual luciferase assays identified the STAT3 gene as a novel direct target of miR-125a. Functional studies showed that miR-125a overexpression significantly suppressed the growth, invasion and epithelial-mesenchymal transition (EMT) of cervical cancer cells both in vitro and in vivo via decreasing STAT3 expression. Moreover, miR-125a conferred to G2/M cell cycle arrest, accompanied by inhibition of several G2/M checkpoint proteins. Mechanistically, inactivation of miR-125a during cervical carcinogenesis was caused by HPV suppression of p53 expression. Clinically, STAT3, the expression of which, predicted poorer outcome, was inversely correlated with miR-125a in cervical cancer. These data highlight the importance of miR-125a in the cell proliferation and progression of cervical cancer, and indicate that miR-125a may be a useful therapeutic target for cervical cancer.
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Affiliation(s)
- Zhongyi Fan
- Department of Oncology, PLA General Hospital, Beijing, China
| | - Hanzhi Cui
- Department of Oncology, 309th Hospital of PLA, Beijing, China
| | - Xiaojie Xu
- Department of Medical Molecular Biology, Beijing Institute of Biotechnology, Beijing, China
| | - Zhi Lin
- Department of Oncology, PLA General Hospital, Beijing, China
| | - Xuelin Zhang
- Department of Oncology, PLA General Hospital, Beijing, China
| | - Lei Kang
- Department of Nuclear Medicine, Peking University First Hospital, Beijing, China
| | - Baiyu Han
- Department of Endocrinology and Metablism, 264th Hospital of PLA, Shanxi, China
| | - Jing Meng
- Department of Oncology, PLA General Hospital, Beijing, China
| | - Zhifeng Yan
- Department of Oncology, PLA General Hospital, Beijing, China
| | - Xiang Yan
- Department of Oncology, PLA General Hospital, Beijing, China
| | - Shunchang Jiao
- Department of Oncology, PLA General Hospital, Beijing, China
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Singh N, Hussain S, Sharma U, Suri V, Nijhawan R, Bharadwaj M, Sobti RC. The protective role of the -1306C>T functional polymorphism in matrix metalloproteinase-2 gene is associated with cervical cancer: implication of human papillomavirus infection. Tumour Biol 2015; 37:5295-303. [PMID: 26561467 DOI: 10.1007/s13277-015-4378-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Accepted: 11/04/2015] [Indexed: 10/22/2022] Open
Abstract
Cervical cancer is the major reproductive health problem among women caused by persistent infection of high-risk human papillomavirus (HR-HPV). Metalloproteinase-2 (MMP-2) is an endopeptidase highly expressed in cervical cancer; however, the genetic link between aberrant expression of MMP-2 and cervical carcinogenesis is not known. The genotypic distribution, expression pattern of MMP-2 and HPV infection, was analyzed in a total of 300 fresh surgically resected cervical tissue biopsies. The MMP-2 C1306T (rs243865) promoter polymorphism dominant model (CC v/s CT + CT + TT) revealed that the CC genotype had a 4.33-fold significant increased risk for development of cervical cancer (OR = 4.33; 95 % CI = 2.36-4.02, p = 0.0001) compared to those with variant genotypes (-1306 CT + TT). The C allele was associated with 3-fold significant increased risk (OR = 2.95; 95 % CI = 1.90-4.60, p = 0.0002) compared to T allele. Interestingly, a significant correlation was found between high expression of MMP-2 protein and CC genotype in cancer patients (p = 0.001) compared to normal controls (p = 0.012). Further analysis showed that the risk of cancer was extremely pronounced in HPV positive patients (OR = 9.33; 95 % CI = 2.88-30.20, p = 0.0001) compared to HPV negative ones, implicating the possible interaction between -1306CC genotype and HPV infection in increasing the cancer risk (p = 0.0001). The leads from the present study suggest the protective role of gene variant -1306C>T at the promoter region of the MMP-2 against HPV-mediated cervical cancer. These findings substantiate the functional role of MMP-2 C1306T polymorphism in a significant downregulation of MMP-2 protein in women with variant genotype (CT/TT) compared to the normal wild CC genotype.
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Affiliation(s)
- Neha Singh
- Systems Biology Research Centre-Tumor biology, School of Life Sciences, University of Skövde, Skövde, SE-54128, Sweden. .,Department of Biotechnology, Panjab University, Chandigarh, India.
| | - Showket Hussain
- Division of Molecular Oncology, Institute of Cytology and Preventive Oncology (ICMR), Noida, India.
| | - Upma Sharma
- Division of Molecular Genetics and Biochemistry, Institute of Cytology and Preventive Oncology (ICMR), Noida, India
| | - Vanita Suri
- Department of Obstetrics and Gynecology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Raje Nijhawan
- Department of Cytology & Gynae. Pathology, Post Graduate Institute of Medical Education and Research, Sector-12, Chandigarh, India
| | - Mausumi Bharadwaj
- Division of Molecular Genetics and Biochemistry, Institute of Cytology and Preventive Oncology (ICMR), Noida, India
| | - R C Sobti
- Department of Biotechnology, Panjab University, Chandigarh, India. .,Vice Chancellor BBA (Central) University, Lucknow, India.
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Zhang W, Ou J, Lei F, Hou T, Wu S, Niu C, Xu L, Zhang Y. C14ORF166 overexpression is associated with pelvic lymph node metastasis and poor prognosis in uterine cervical cancer. Tumour Biol 2016; 37:369-79. [PMID: 26219895 DOI: 10.1007/s13277-015-3806-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
C14ORF166 (chromosome 14 open reading frame 166) is a transcriptional repressor related to the regulation of centrosome architecture. However, the role of C14ORF166 in the development and progression of cancer remains largely unknown. The aim of this study was to investigate the expression and clinicopathological significance of C14ORF166 in cervical cancer. C14ORF166 expression was analyzed using quantitative real-time PCR (RT-PCR) and Western blotting in cervical cancer cell lines and eight paired cervical cancer samples and the adjacent normal tissues. Immunohistochemistry was used to analyze C14ORF166 protein expression in 148 clinicopathologically characterized cervical cancer specimens. Statistical analyses were performed to evaluate the relationship between the expression of C14ORF166 and clinicopathologic features and prognosis. C14ORF166 mRNA and protein expression were significantly upregulated in cervical cancer cell lines and tissue samples (P < 0.05). Immunohistochemical analysis revealed a high expression of C14ORF166 was observed in 39.9 % (59/148) of the cervical cancer specimens; the remaining samples expressed low levels or did not express any detectable C14ORF166. The chi-square test indicated that high-level expression of C14ORF166 was significantly associated with International Federation of Gynecology and Obstetrics (FIGO) stage (P < 0.001), vital status (P = 0.026), tumor size (P = 0.034), serum squamous cell carcinoma antigen level (SCC-Ag; P = 0.035), and pelvic lymph node metastasis (P < 0.001). Patients with highly expressed C14ORF166 showed a tendency to receive postoperative chemotherapy (P = 0.005) and postoperative radiation (P = 0.008). Furthermore, high C14ORF166 expression was associated with poorer overall survival compared to low C14ORF166 expression, and C14ORF166 was a significant prognostic factor in univariate and multivariate analysis (P < 0.05). High C14ORF166 expression had prognostic value for poor outcome in cervical cancer. C14ORF166 may represent a biomarker of pelvic lymph node metastasis and enable the identification of high-risk patients along with selection of appropriate treatment strategies.
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Shishodia G, Shukla S, Srivastava Y, Masaldan S, Mehta S, Bhambhani S, Sharma S, Mehrotra R, Das BC, Bharti AC. Alterations in microRNAs miR-21 and let-7a correlate with aberrant STAT3 signaling and downstream effects during cervical carcinogenesis. Mol Cancer 2015; 14:116. [PMID: 26051842 PMCID: PMC4459448 DOI: 10.1186/s12943-015-0385-2] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Accepted: 05/12/2015] [Indexed: 11/23/2022] Open
Abstract
Background Present study provides clinical evidence of existence of a functional loop involving miR-21 and let-7a as potential regulators of aberrant STAT3 signaling recently reported by our group in an experimental setup (Shishodia et al. BMC Cancer 2014, 14:996). The study is now extended to a set of cervical tissues that represent natural history of human papillomavirus (HPV)-induced tumorigenic transformation. Materials and methods Cervical tissues from histopathologically-confirmed pre-cancer (23) and cancer lesions (56) along with the normal control tissues (23) were examined for their HPV infection status, expression level of miR-21 & let-7a and STAT3 & pSTAT3 (Y705) by PCR-based genotyping, quantitative real-time PCR and immunoblotting. Results Analysis of cancer tissues revealed an elevated miR-21 and reduced let-7a expression that correspond to the level of STAT3 signaling. While miR-21 showed direct association, let-7a expression was inversely related to STAT3 expression and its activation. In contrast, a similar reciprocal expression kinetics was absent in LSIL and HSIL tissues which overexpressed let-7a. miR-21 was found differentially overexpressed in HPV16-positive lesions with a higher oncoprotein E6 level. Overexpression of miR-21 was accompanied by elevated level of other STAT3-regulated gene products MMP-2 and MMP-9. Enhanced miR-21 was found associated with decreased level of STAT3 negative regulator PTEN and negative regulator of MMPs, TIMP-3. Conclusion Overall, our study suggests that the microRNAs, miR-21 and let-7a function as clinically relevant integral components of STAT3 signaling and are responsible for maintaining activated state of STAT3 in HPV-infected cells during cervical carcinogenesis. Electronic supplementary material The online version of this article (doi:10.1186/s12943-015-0385-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Gauri Shishodia
- Division of Molecular Oncology, Institute of Cytology and Preventive Oncology, I - 7, Sector -39, Noida, 201301, Uttar Pradesh, India. .,Dr. B.R. Ambedkar Centre for Biomedical Research, University of Delhi, Delhi, 110007, New Delhi, India. .,Present Address: Louisiana State University Health Sciences Center, Shreveport, LA, USA.
| | - Shirish Shukla
- Division of Molecular Oncology, Institute of Cytology and Preventive Oncology, I - 7, Sector -39, Noida, 201301, Uttar Pradesh, India. .,Present Address: Department of Radiation Oncology, University of Michigan Medical School, Ann Arbor, MI, USA.
| | - Yogesh Srivastava
- Division of Molecular Oncology, Institute of Cytology and Preventive Oncology, I - 7, Sector -39, Noida, 201301, Uttar Pradesh, India.
| | - Shashank Masaldan
- Division of Molecular Oncology, Institute of Cytology and Preventive Oncology, I - 7, Sector -39, Noida, 201301, Uttar Pradesh, India.
| | - Sumita Mehta
- Department of Obstetrics and Gynecology, University College of Medical Sciences and Associated Guru Teg Bahadur Hospital, Shahdara, Delhi, New Delhi, India.
| | - Suresh Bhambhani
- Division of Cytopathology, Institute of Cytology and Preventive Oncology, I - 7, Sector - 39, Noida, 201301, Uttar Pradesh, India.
| | - Shashi Sharma
- Division of Epidemiology and Biostatistics, Institute of Cytology and Preventive Oncology, I - 7, Sector -39, Noida, 201301, Uttar Pradesh, India.
| | - Ravi Mehrotra
- Division of Cytopathology, Institute of Cytology and Preventive Oncology, I - 7, Sector - 39, Noida, 201301, Uttar Pradesh, India.
| | - Bhudev Chandra Das
- Dr. B.R. Ambedkar Centre for Biomedical Research, University of Delhi, Delhi, 110007, New Delhi, India.
| | - Alok Chandra Bharti
- Division of Molecular Oncology, Institute of Cytology and Preventive Oncology, I - 7, Sector -39, Noida, 201301, Uttar Pradesh, India.
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Chopjitt P, Pientong C, Bumrungthai S, Kongyingyoes B, Ekalaksananan T. Activities of E6 Protein of Human Papillomavirus 16 Asian Variant on miR-21 Up-regulation and Expression of Human Immune Response Genes. Asian Pac J Cancer Prev 2015; 16:3961-8. [DOI: 10.7314/apjcp.2015.16.9.3961] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Li YX, Zhang L, Simayi D, Zhang N, Tao L, Yang L, Zhao J, Chen YZ, Li F, Zhang WJ. Human papillomavirus infection correlates with inflammatory Stat3 signaling activity and IL-17 level in patients with colorectal cancer. PLoS One 2015; 10:e0118391. [PMID: 25706309 PMCID: PMC4338045 DOI: 10.1371/journal.pone.0118391] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Accepted: 01/15/2015] [Indexed: 12/19/2022] Open
Abstract
Background Colorectal cancer (CRC) is a major burden of public health and healthcare worldwide. Microbiota has been suggested in promoting chronic inflammation in the intestine which, in turn, promotes tumor development. This study focuses on possible correlations of human papillomavirus (HPV) infection with proinflammatory Stat3 signaling activities and the resulting levels of its downstream proinflammatory cytokine IL-17 in CRC patients. Methods HPV was examined using HPV Genotyping Chip technology and constitutively active Stat3 (p-Stat3) and IL-17 levels were tested using immunohistochemistry (IHC) in paraffin-embedded cancerous and adjacent normal tissues (ANT) from a cohort of 95 CRC patients. Correlation analyses were performed between HPV infection and clinicopathological characteristics, Stat3 activities and IL-17 levels among these CRC patients. Results Three major findings were observed: (1) HPV infection existed in a high rate of CRC cases (48.4%, 46/95), of which 45 cases (45/46, 97.8%) were high-risk HPV16-positive and only one case was HPV53-positive. (2) HPV infection correlated with poorer clinical stages (III+IV) of CRC. (3) HPV infection strongly correlated with both constitutively higher Stat3 activities (P<0.01) and higher IL-17 levels (P<0.01) only in CRC tissues but not in ANT tissues. Conclusions HPV infection is common in CRC patients suggesting potentially preventive effectiveness of HPV vaccination among high-risk young individuals. We have for the first time revealed a tri-lateral relationship among HPV infection, constitutive Stat3 activity and IL-17 level, whose collaborative act may orchestrate a proinflammatory microenvironment in the colorectum that, in turn, may promote carcinogenesis and possibly facilitate progression of CRC.
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Affiliation(s)
- Yi Xin Li
- Department of Pathology/the Key Laboratories for Xinjiang Endemic and Ethnic Diseases, Shihezi University School of Medicine, Shihezi, Xinjiang, China
| | - Lei Zhang
- Department of Pathology/the Key Laboratories for Xinjiang Endemic and Ethnic Diseases, Shihezi University School of Medicine, Shihezi, Xinjiang, China
- Changzhou Children’s Hospital, Changzhou, Jiangsu, China
| | - Dilixia Simayi
- Department of Pathology/the Key Laboratories for Xinjiang Endemic and Ethnic Diseases, Shihezi University School of Medicine, Shihezi, Xinjiang, China
- Key Laboratory of Chinese Ministry of Education, Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Nan Zhang
- Department of Pathology/the Key Laboratories for Xinjiang Endemic and Ethnic Diseases, Shihezi University School of Medicine, Shihezi, Xinjiang, China
| | - Lin Tao
- Department of Pathology/the Key Laboratories for Xinjiang Endemic and Ethnic Diseases, Shihezi University School of Medicine, Shihezi, Xinjiang, China
- Department of Pathology, the First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, China
| | - Lan Yang
- Department of Pathology/the Key Laboratories for Xinjiang Endemic and Ethnic Diseases, Shihezi University School of Medicine, Shihezi, Xinjiang, China
- Department of Pathology, the First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, China
| | - Jin Zhao
- Department of Pathology/the Key Laboratories for Xinjiang Endemic and Ethnic Diseases, Shihezi University School of Medicine, Shihezi, Xinjiang, China
- Department of Pathology, the First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, China
| | - Yun Zhao Chen
- Department of Pathology/the Key Laboratories for Xinjiang Endemic and Ethnic Diseases, Shihezi University School of Medicine, Shihezi, Xinjiang, China
- Department of Pathology, the First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, China
| | - Feng Li
- Department of Pathology/the Key Laboratories for Xinjiang Endemic and Ethnic Diseases, Shihezi University School of Medicine, Shihezi, Xinjiang, China
- Department of Pathology, the First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, China
| | - Wen Jie Zhang
- Department of Pathology/the Key Laboratories for Xinjiang Endemic and Ethnic Diseases, Shihezi University School of Medicine, Shihezi, Xinjiang, China
- Department of Pathology, the First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, China
- * E-mail:
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18
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YAN CHUNMEI, ZHAO YINGLING, CAI HONGYI, MIAO GUOYING, MA WEN. Blockage of PTPRJ promotes cell growth and resistance to 5-FU through activation of JAK1/STAT3 in the cervical carcinoma cell line C33A. Oncol Rep 2015; 33:1737-44. [DOI: 10.3892/or.2015.3769] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Accepted: 12/30/2014] [Indexed: 11/06/2022] Open
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Singh N, Hussain S, Kakkar N, Singh SK, Sobti RC, Bharadwaj M. Implication of high risk human papillomavirus HR-HPV infection in prostate cancer in Indian population--a pioneering case-control analysis. Sci Rep 2015; 5:7822. [PMID: 25592643 DOI: 10.1038/srep07822] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Accepted: 12/11/2014] [Indexed: 11/10/2022] Open
Abstract
Prostate cancer is the second most common cancer with sexual history as a consistent risk factor. This is the pioneering study that evaluates the frequency of HPV infection in prostate cancer in India. Ninety five (95) histopathologically confirmed cancer and fifty five (55) BPH from Indian population were analyzed for HPV infection using a pair of consensus sequence primer followed by type specific PCRs for both high-risk and low-risk HPV types. The data demonstrate HPV infection in 41% of prostate tumor biopsies and 20% in BPH. Subsequent PCR- based HPV typing using type - specific primers revealed 32% were infected with HPV type 16 whereas 6% were found to be positive for HPV type 18, while in BPH controls only 5% of the BPH controls were infected with HPV 16 and this difference was highly significant (p = 0.0004). Significant proportion of HPV infected (74%) cases belonged to stage III and IV (p < 0.001) with a high Gleason score ≥8 (p = 0.003). The study represents for the first time the incidence of HPV infection in prostate cancer in Indian population and strengthens the hypothesis that HPV infection could be one of the co factor associated with progression of prostate cancer.
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Rath G, Jawanjal P, Salhan S, Nalliah M, Dhawan I. Clinical significance of inactivated glycogen synthase kinase 3β in HPV-associated cervical cancer: Relationship with Wnt/β-catenin pathway activation. Am J Reprod Immunol 2014; 73:460-78. [PMID: 25532422 DOI: 10.1111/aji.12346] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2014] [Accepted: 11/18/2014] [Indexed: 11/29/2022] Open
Abstract
PROBLEM To determine the role of inactivated GSK3β with respect to Wnt/β-catenin pathway activation in HPV-16/18-associated cervical cancer. METHOD OF STUDY The expression of active (pGSK3β-Try(216)), inactive (pGSK3β-Ser(9)), and c-Myc as well as HPV-16/18 infection was analyzed in cervical intra-epithelial neoplasia (CIN), squamous cell carcinoma (SCCs) and normal by immunohistochemistry and multiplex PCR. The proteins level was also compared with β-catenin and APC expression. RESULTS The dramatic decrease of pGSK3β-Try(216) expression but ectopic overexpression of pGSK3β-Ser(9) and c-Myc was observed both in CIN and SCCs samples compared to normal tissues. 57/67 CIN and 132/153 SCCs showed HPV-16 infection, while 3/67 CIN and 4/153 SCCs were harbored with HPV-18 infection. Both the proteins were significantly upregulated in HPV-16 infected cases (P = 0.0001; P = 0.001) and also positively correlated with nuclear β-catenin (P = 0.0001; P = 0.0001). CONCLUSION The process of generation of HPV-16-associated cervical tumorigenesis is synergized with GSK3β inactivation and overactivation of Wnt/β-catenin pathway.
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Affiliation(s)
- Gayatri Rath
- Department of Anatomy, Vardhman Mahavir Medical College & Safdarjung Hospital, New Delhi, India
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21
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Tripathi R, Rath G, Jawanjal P, Sharma S, Singhal P, Bhambhani S, Hussain S, Bharadwaj M. Clinical impact of de-regulated Notch-1 and Notch-3 in the development and progression of HPV-associated different histological subtypes of precancerous and cancerous lesions of human uterine cervix. PLoS One 2014; 9:e98642. [PMID: 24905589 DOI: 10.1371/journal.pone.0098642] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2013] [Accepted: 05/06/2014] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Cervical cancer is the leading cause of cancer related deaths among women in India. Limited reports are available for Notch-1 and Notch-3 protein in cervical carcinoma, which play crucial role in cell proliferation, differentiation, and apoptosis. METHODS This study was designed to evaluate the role of Notch-1 and Notch-3 with context to HPV infection in cervical carcinoma. A total of 168 tissue biopsy samples comprising of tumor specimens (n = 98), precancer (n = 30) and non-neoplastic cervical tissues (n = 40) were screened for HPV infection by PCR and expression of Notch-1 and Notch-3 protein by Immunohistochemistry and Immunoblotting. RESULTS 80% (24/30) were found to be positive for HPV in precancer and 86.7% (85/98) in cancer patients. Notch-1 expression of precancer and cancer cases was found to be significantly down-regulated with severity of disease in nuclear (3.43±0.29; 2.04±0.19, p = 0.0001, p = 0.0001) and cytoplasm (3.07±0.29; 2.29±0.17, p = 0.0001, p = 0.0001) obtained from different stages as compared to normal cervix tissue (5.40±0.19, 4.97±0.15; p<0.001; p<0.001). However, Notch-3 expression of above cases was significantly up-regulated with severity of disease and showed intense nuclear (4.17±0.39; 4.74±0.18, p = 0.0001, p = 0.0001) and cytoplasm (3.67±0.36; 4.48±0.18, p = 0.0001, p = 0.0001) of different stages as compared to normal cervix tissue (0.95±0.20, 0.70±0.20; p<0.001; p<0.001) respectively. CONCLUSIONS These findings suggest that Notch-1 and Notch-3 may play an important role with synergistic effect of HPV in regulating development and proliferation of cervical cancer through the deregulation of Notch signalling. This study also shows the clinical utility of both proteins which may be used as predictable biomarkers in diagnosing different histological sub-types of HPV associated cervical cancer. Nevertheless, abnormal activation of this pathway may provide legitimate targets for cervical cancer therapy.
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22
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Richards KH, Doble R, Wasson CW, Haider M, Blair GE, Wittmann M, Macdonald A. Human papillomavirus E7 oncoprotein increases production of the anti-inflammatory interleukin-18 binding protein in keratinocytes. J Virol 2014; 88:4173-9. [PMID: 24478434 DOI: 10.1128/JVI.02546-13] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
UNLABELLED Human papillomavirus (HPV) can successfully evade the host immune response to establish a persistent infection. We show here that expression of the E7 oncoprotein in primary human keratinocytes results in increased production of interleukin-18 (IL-18) binding protein (IL-18BP). This anti-inflammatory cytokine binding protein is a natural antagonist of IL-18 and is necessary for skin homeostasis. We map increased IL-18BP production to the CR3 region of E7 and demonstrate that this ability is shared among E7 proteins from different HPV types. Furthermore, mutagenesis shows that increased IL-18BP production is mediated by a gamma-activated sequence (GAS) in the IL-18BP promoter. Importantly, the increased IL-18BP levels seen in E7-expressing keratinocytes are capable of diminishing IL-18-mediated CD4 lymphocyte activation. This study provides the first evidence for a virus protein that targets IL-18BP and further validates E7 as a key component of the HPV immune evasion armor. IMPORTANCE Infection with human papillomavirus is a leading cause of morbidity and mortality worldwide. This study demonstrates that the E7 protein increases production of the anti-inflammatory IL-18BP, a major regulator of epithelial homeostasis. A number of E7 proteins can increase IL-18BP production, and a region within the CR3 of E7 is necessary for mediating the increase. A consequence of increased IL-18BP production is a reduction in CD4-positive lymphocyte activation in response to IL-18 costimulation. These findings may shed light on the immune evasion abilities of HPV.
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Organista-Nava J, Gómez-Gómez Y, Gariglio P. Embryonic stem cell-specific signature in cervical cancer. Tumour Biol 2013; 35:1727-38. [PMID: 24163107 DOI: 10.1007/s13277-013-1321-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Accepted: 10/14/2013] [Indexed: 10/26/2022] Open
Abstract
The wide range of invasive and noninvasive lesion phenotypes associated with high-risk human papillomavirus (HR-HPV) infection in cervical cancer (CC) indicates that not only the virus but also specific cervical epithelial cells in the transformation zone (TZ), such as stem cells (SCs), play an important part in the development of cervical neoplasia. In this review, we focused in an expression signature that is specific to embryonic SCs and to poorly differentiated cervical malignant tumors and we hypothesize that this expression signature may play an important role to promote cell growth, survival, colony formation, lack of adhesion, as well as cell invasion and migration in CC.
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Affiliation(s)
- Jorge Organista-Nava
- Instituto de Fisiología Celular, Universidad Nacional Autónoma de México (UNAM), México, DF, México,
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24
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Ren C, Cheng X, Lu B, Yang G. Activation of interleukin-6/signal transducer and activator of transcription 3 by human papillomavirus early proteins 6 induces fibroblast senescence to promote cervical tumourigenesis through autocrine and paracrine pathways in tumour microenvironment. Eur J Cancer 2013; 49:3889-99. [PMID: 23953057 DOI: 10.1016/j.ejca.2013.07.140] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Revised: 06/19/2013] [Accepted: 07/16/2013] [Indexed: 11/22/2022]
Abstract
Although it is reported that interleukin (IL)-6/signal transducer and activator of transcription 3 (STAT3) is activated by human papillomavirus (HPV) infection in cervical cancer cells, little is known about the role of IL-6/STAT3 in tumour microenvironment during development of the disease. In this study, we found that cancer-associated fibroblasts (CAF) but not normal fibroblasts (NF) secrete high level of IL-6 with activated STAT3 and appear senescent at early passages in culture or in cervical cancer tissues infected with high-risk HPV, and that treatment of NF with recombinant IL-6 or CAF conditioned medium (CM) induces activation of STAT3 and cellular senescence. IL-6 and STAT3 are either upregulated or activated in Siha and Hela cells infected with HPV 16 or 18, but not in C33A and ME180 cells without HPV 16 or 18 infection. Overexpression of HPV early proteins 6 (E6) activates STAT3, increases IL-6 expression and tumour burden in C33A and ME180 cells, while silencing of HPV E6 by specific shRNA reduces STAT3 activation, IL-6 expression, and tumour formation in Siha and HeLa cells, so does silencing of STAT3 by specific shRNA in HeLa and C33A/E6 cells. The tumour growth of cervical cancer cells reconstituted with CAF or NF is largely affected by inhibition of fibroblast senescence with STAT3 inhibitor or with IL-6 antibody treatment. Thus, we have uncovered a mechanism that fibroblast senescence promotes cervical cancer development through high-risk HPV E6-activated IL-6/STAT3 signalling in tumour microenvironment.
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Shukla S, Mahata S, Shishodia G, Pandey A, Tyagi A, Vishnoi K, Basir SF, Das BC, Bharti AC. Functional regulatory role of STAT3 in HPV16-mediated cervical carcinogenesis. PLoS One 2013; 8:e67849. [PMID: 23874455 PMCID: PMC3715508 DOI: 10.1371/journal.pone.0067849] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Accepted: 05/21/2013] [Indexed: 12/20/2022] Open
Abstract
Signal transducer and activator of transcription 3 (STAT3) is an oncogenic transcription factor constitutively active and aberrantly expressed in cervical cancer. However, the functional role of STAT3 in regulation of HPV's viral oncogene expression and downstream events associated with cervical carcinogenesis is not known. Our present study performed on HPV16-positive cervical cancer cell lines (SiHa and CaSki) and primary tumor tissues revealed a strong positive correlation of constitutively active STAT3 with expression of HPV16 E6 and E7 oncoproteins and a negative association with levels of p53 and pRB. Pharmacologic targeting of STAT3 expression in cervical cancer cell lines either by STAT3-specific siRNA or blocking its tyrosine phosphorylation by AG490 or curcumin led to dose-dependent accumulation of p53 and pRb in cervical cancer cells. Interestingly, the suppression of STAT3 expression or activation was associated with the gradual loss of HPV16 E6 and E7 expression and was accompanied by loss of cell viability. The viability loss was specifically high in HPV16-positive cells as compared to HPV negative C33a cells. These findings substantiate the regulatory role of STAT3 in HPV16-mediated cervical carcinogenesis. Leads obtained from the present study provide a strong rationale for developing novel STAT3-based approaches for therapeutic interventions against HPV infection to control cervical cancer.
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Affiliation(s)
- Shirish Shukla
- Division of Molecular Oncology, Institute of Cytology and Preventive Oncology, NOIDA, Uttar Pradesh, India
| | - Sutapa Mahata
- Division of Molecular Oncology, Institute of Cytology and Preventive Oncology, NOIDA, Uttar Pradesh, India
| | - Gauri Shishodia
- Division of Molecular Oncology, Institute of Cytology and Preventive Oncology, NOIDA, Uttar Pradesh, India
| | - Arvind Pandey
- Division of Molecular Oncology, Institute of Cytology and Preventive Oncology, NOIDA, Uttar Pradesh, India
| | - Abhishek Tyagi
- Division of Molecular Oncology, Institute of Cytology and Preventive Oncology, NOIDA, Uttar Pradesh, India
| | - Kanchan Vishnoi
- Division of Molecular Oncology, Institute of Cytology and Preventive Oncology, NOIDA, Uttar Pradesh, India
| | - Seemi F. Basir
- Department of Biosciences, Jamia Millia Islamia, New Delhi, India
| | - Bhudev C. Das
- Dr. B.R. Ambedkar Centre for Biomedical Research, University of Delhi, New Delhi, India
| | - Alok C. Bharti
- Division of Molecular Oncology, Institute of Cytology and Preventive Oncology, NOIDA, Uttar Pradesh, India
- * E-mail:
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Ho Y, Tsao SW, Zeng M, Lui VWY. STAT3 as a therapeutic target for Epstein-Barr virus (EBV) – associated nasopharyngeal carcinoma. Cancer Lett 2013; 330:141-9. [DOI: 10.1016/j.canlet.2012.11.052] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2012] [Revised: 11/28/2012] [Accepted: 11/28/2012] [Indexed: 12/24/2022]
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Singh N, Sobti RC, Suri V, Nijhawan R, Sharma S, Das BC, Bharadwaj M, Hussain S. Downregulation of tumor suppressor gene PML in uterine cervical carcinogenesis: impact of human papillomavirus infection (HPV). Gynecol Oncol 2013; 128:420-6. [PMID: 23220564 DOI: 10.1016/j.ygyno.2012.11.041] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Revised: 11/28/2012] [Accepted: 11/29/2012] [Indexed: 11/23/2022]
Abstract
OBJECTIVES Cervical cancer is a leading gynecological cancer in Indian women and is caused due to infection with high risk human pappilloma virus (HR-HPV) 16 and 18. It has been well documented that PML (promyelocytic leukemia) enhances viral infectivity and plays a crucial role in antiviral response mechanisms. The aim of the present study was to evaluate the role of PML gene with context to HPV infection in cervical carcinogenesis. METHODS The expression pattern of PML was analyzed by western blotting and immunohistochemistry in a total of 170 fresh surgically resected cervical tissue specimens comprising precancer (n=12), cancer (n=118) and normal controls (n=40) recruited from PGIMER, Chandigarh, India. HPV status was analyzed by L1 consensus PCR followed by type specific PCR for HR-HPV types 16 and 18 and low risk types 6 and 11. RESULTS A significant downregulation of PML protein was observed in the majority of cervical cancer and precancer cases 68% (89/130) compared to normal controls. The loss of expression pattern of PML gene was significantly increased with severity of disease both clinically and pathologically (p<0.001). HPV infection was detected in the majority of cancer cases 96% (113/118) and in 83% (10/12) of precancer lesions whereas no infection could be detected in normal controls. Interestingly, all the 68% (89/130) cervical cancer cases that showed downregulation of PML were HPV infected (p=0.0001). CONCLUSION Taken together, these observations suggest that the downregulation of PML gene and its synergism with HPV infection may play an important role and may serve as a new marker for early diagnosis and therapeutic intervention for cervical carcinogenesis.
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Sobti RC, Singh N, Hussain S, Suri V, Nijhawan R, Bharti AC, Bharadwaj M, Das BC. Aberrant promoter methylation and loss of Suppressor of Cytokine Signalling-1 gene expression in the development of uterine cervical carcinogenesis. Cell Oncol (Dordr) 2011; 34:533-43. [DOI: 10.1007/s13402-011-0056-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/05/2011] [Indexed: 01/22/2023] Open
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Zheng ZM, Wang X. Regulation of cellular miRNA expression by human papillomaviruses. Biochim Biophys Acta 2011; 1809:668-77. [PMID: 21616186 DOI: 10.1016/j.bbagrm.2011.05.005] [Citation(s) in RCA: 152] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 03/17/2011] [Revised: 04/20/2011] [Accepted: 05/09/2011] [Indexed: 12/17/2022]
Abstract
High-risk HPV infection leads to aberrant expression of cellular oncogenic and tumor suppressive miRNAs. A large number of these miRNA genes are downstream targets of the transcription factors c-Myc, p53, and E2F and their expression can therefore be modulated by oncogenic HPV E6 and E7. Cervical cancer represents a unique tumor model for understanding how viral E6 and E7 oncoproteins deregulate the expression of the miR-15/16 cluster, miR-17-92 family, miR-21, miR-23b, miR-34a, and miR-106b/93/25 cluster via the E6-p53 and E7-pRb pathways. Moreover, miRNAs may influence the expression of papillomavirus genes in a differentiation-dependent manner by targeting viral RNA transcripts. Cellular miRNAs affecting HPV DNA replication are of great interest and will be a future focus. We are entering an era focusing on miRNA and noncoding RNA, and the studies on HPV and host miRNA interactions will continue shedding more light on our understanding of the HPV life cycle and the mechanistic underpinnings of HPV-induced oncogenesis. This article is part of a Special Issue entitled: "MicroRNAs in viral gene regulation".
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Affiliation(s)
- Zhi-Ming Zheng
- National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.
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Hussain S, Singh N, Salam I, Bandil K, Yuvaraj M, Akbar Bhat M, Mir MM, Siddiqi MA, Sobti RC, Bharadwaj M, Das BC. Methylation-mediated gene silencing of suppressor of cytokine signaling-1 (SOCS-1) gene in esophageal squamous cell carcinoma patients of Kashmir valley. J Recept Signal Transduct Res 2011; 31:147-56. [DOI: 10.3109/10799893.2011.553836] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Shukla S, Shishodia G, Mahata S, Hedau S, Pandey A, Bhambhani S, Batra S, Basir SF, Das BC, Bharti AC. Aberrant expression and constitutive activation of STAT3 in cervical carcinogenesis: implications in high-risk human papillomavirus infection. Mol Cancer 2010; 9:282. [PMID: 20977777 PMCID: PMC2984472 DOI: 10.1186/1476-4598-9-282] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2010] [Accepted: 10/27/2010] [Indexed: 12/31/2022] Open
Abstract
Background Recent observations indicate potential role of transcription factor STAT3 in cervical cancer development but its role specifically with respect to HPV infection is not known. Present study has been designed to investigate expression and activation of STAT3 in cervical precancer and cancer in relation to HPV infection during cervical carcinogenesis. Established cervical cancer cell lines and prospectively-collected cervical precancer and cancer tissues were analyzed for the HPV positivity and evaluated for STAT3 expression and its phosphorylation by immunoblotting and immunohistochemistry whereas STAT3-specific DNA binding activity was examined by gel-shift assays. Results Analysis of 120 tissues from cervical precancer and cancer lesions or from normal cervix revealed differentially high levels of constitutively active STAT3 in cervical precancer and cancer lesions, whereas it was absent in normal controls. Similarly, a high level of constitutively active STAT3 expression was observed in HPV-positive cervical cancer cell lines when compared to that of HPV-negative cells. Expression and activity of STAT3 were found to change as a function of severity of cervical lesions from precancer to cancer. Expression of active pSTAT3 was specifically high in cervical precancer and cancer lesions found positive for HPV16. Interestingly, site-specific accumulation of STAT3 was observed in basal and suprabasal layers of HPV16-positive early precancer lesions which is indicative of possible involvement of STAT3 in establishment of HPV infection. In HPV16-positive cases, STAT3 expression and activity were distinctively higher in poorly-differentiated lesions with advanced histopathological grades. Conclusion We demonstrate that in the presence of HPV16, STAT3 is aberrantly-expressed and constitutively-activated in cervical cancer which increases as the lesion progresses thus indicating its potential role in progression of HPV16-mediated cervical carcinogenesis.
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Affiliation(s)
- Shirish Shukla
- Division of Molecular Oncology, Institute of Cytology & Preventive Oncology, I-7, Sector-39, NOIDA, U.P., India
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Sobti RC, Singh N, Hussain S, Suri V, Bharadwaj M, Das BC. Deregulation of STAT-5 isoforms in the development of HPV-mediated cervical carcinogenesis. J Recept Signal Transduct Res 2010; 30:178-88. [DOI: 10.3109/10799891003786218] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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