Cancers, Vol. 11, Pages 1934: JAK2 Inhibition Impairs Proliferation and Sensitises Cervical Cancer Cells to Cisplatin-Induced Cell Death

Cancers, Vol. 11, Pages 1934: JAK2 Inhibition Impairs Proliferation and Sensitises Cervical Cancer Cells to Cisplatin-Induced Cell Death Cancers doi: 10.3390/cancers11121934 Authors: Ethan L. Morgan Andrew Macdonald Persistent infection with high-risk human papillomavirus (HPV) is the underlying cause of ~5% of all human cancers, including the majority of cervical carcinomas and many other ano-genital and oral cancers. A major challenge remains to identify key host targets of HPV and to reveal how they contribute to virus-mediated malignancy. The HPV E6 oncoprotein aberrantly activates the signal transducer and activator of transcription 3 (STAT3) transcription factor and this is achieved by a virus-driven increase in the levels of the pro-inflammatory cytokine interleukin-6 (IL-6) in HPV positive cervical cancers cells. Crucially, STAT3 activity is essential for the proliferation and survival of cervical cancer cells, suggesting that targeting STAT3 may have therapeutic potential. Unfortunately, the development of direct STAT3 inhibitors has been problematic in the clinic due to toxicity issues identified in early stage trials. To overcome this issue, we focused on the protein Janus kinase 2 (JAK2), which phosphorylates STAT3 and is essential for STAT3 activation. Here, we demonstrate that inhibiting JAK2 reduces cell proliferation and induces apoptosis in HPV transformed cervical cancer cells. We further establish that this is due to inhibition of phosphorylation ...
Source: Cancers - Category: Cancer & Oncology Authors: Tags: Article Source Type: research

Related Links:

CONCLUSION: Since the almost exclusively cause of cervical neoplasms is due to the presence and carcinogenic activity of HPV, the harmful/synergistic effect of smoking, passive smoking and partner smoking cannot be attributed to the direct carcinogenic effect of nicotine but to the overall damage of the immune system as we as the reduction of cervical self-defense making it more vulnerable to the carcinogenic nature of HPV, in particular the increased pathogenic types 16 and 18. Lastly, another potential correlation that could be further examined is the potential effects of tobacco constituents in cervical fluids on the se...
Source: Hellenic Journal of Nuclear Medicine - Category: Nuclear Medicine Tags: Hell J Nucl Med Source Type: research
Authors: Park YC, Ouh YT, Sung MH, Park HG, Kim TJ, Cho CH, Park JS, Lee JK Abstract OBJECTIVE: Persistent infection of HPV increases the chance of carcinoma in situ of cervix through stages of cervical intraepithelial neoplasia (CIN) 1, 2, and 3, and finally progresses into cervical cancer. We aimed to explore the safety and efficacy of BLS-M07 which is orally administered agent expressing human papillomavirus (HPV) 16 E7 antigen on the surface of Lactobacillus casei in patients with CIN 3. METHODS: Patients with CIN 3 were recruited in our clinical trial. Reid Colposcopic Index (RCI) grading and serum HPV16 E...
Source: Journal of Gynecologic Oncology - Category: OBGYN Tags: J Gynecol Oncol Source Type: research
This article focuses on the epidemiology, transmission, risk factors, and clinical presentation of HPV-associated oropharyngeal SCC, and provides an update on HPV vaccination in the context of the new head and neck cancer epidemic.
Source: Journal of the American Academy of Physician Assistants - Category: Primary Care Tags: CME: Oncology Source Type: research
Authors: Boguñá N, Capdevila L, Jané-Salas E Abstract Over the last few decades, the human papillomavirus (HPV) infection has emerged as a new epidemic and become a health issue due to its involvement in several cancers affecting the cervix, the anogenital region and the oropharynx. In this review, we aim to understand and explain the distinctive features of HPV-related oropharyngeal squamous cell carcinoma based on its epidemiological data, risk factors, specific topography, HPV subtypes most frequently involved, HPV-status diagnosis, clinical behaviour, prognosis, treatment, and preventive me...
Source: Medicina Clinica - Category: General Medicine Tags: Med Clin (Barc) Source Type: research
Santosh K. Ghosh1*, Thomas S. McCormick1,2 and Aaron Weinberg1* 1Biological Sciences, School of Dental Medicine, Case Western Reserve University, Cleveland, OH, United States 2Dermatology, School of Medicine, Case Western Reserve University, Cleveland, OH, United States Human beta-defensins (hBDs, −1, 2, 3) are a family of epithelial cell derived antimicrobial peptides (AMPs) that protect mucosal membranes from microbial challenges. In addition to their antimicrobial activities, they possess other functions; e.g., cell activation, proliferation, regulation of cytokine/chemokine production, migration, diffe...
Source: Frontiers in Oncology - Category: Cancer & Oncology Source Type: research
Gulcin Tezcan1, Ekaterina V. Martynova1, Zarema E. Gilazieva1, Alan McIntyre2, Albert A. Rizvanov1 and Svetlana F. Khaiboullina1,3* 1Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia 2Centre for Cancer Sciences, Faculty of Medicine and Health Sciences, University of Nottingham, Nottingham, United Kingdom 3Department of Microbiology and Immunology, University of Nevada, Reno, Reno, NV, United States Inflammation has a crucial role in protection against various pathogens. The inflammasome is an intracellular multiprotein signaling complex that is linked to pathogen sensing and...
Source: Frontiers in Pharmacology - Category: Drugs & Pharmacology Source Type: research
Authors: Ishimaru N, Kanzawa Y, Seto H, Kinami S Abstract We herein report a patient with syphilitic cervicitis and cervical cancer presenting as oropharyngeal syphilis. A 31-year-old Japanese woman with a history of unprotected vaginal and oral sex visited our hospital with right submandibular adenomas and erythema in the extremities. The fornix uteri was red, with a nodule noted. The rapid plasma reagin ratio was 1:3. She was diagnosed with syphilitic cervicitis and treated with amoxicillin for four weeks. Initial cervical cytology showed cells with mild nuclear enlargement, which was thought to be metaplasia ass...
Source: Internal Medicine - Category: Internal Medicine Tags: Intern Med Source Type: research
Conclusions In the span of a very short time—less than a decade—robotic head and neck surgery has transformed the management of the head and neck cancer, and it seems clear that the future of treatment for these cancers lies in a multimodal approach in which TORS is likely to play an important role. Nevertheless, it is important to keep in mind that the current indications for TORS are limited and long-term data on the safety and oncological outcomes are needed to better understand the true role of TORS in treatment of head and neck cancer. Nonetheless, the emergence of ever more advanced robotic instruments i...
Source: Frontiers in Oncology - Category: Cancer & Oncology Source Type: research
We examined epigenetic alterations, DNA methylation and microRNA dysregulation, in Epstein-Barr virus-related nasopharyngeal carcinoma in the endemic area of Southern China and found several differentially methyl ated tumor suppressor gene candidates by using a next-generation sequencer. Among these candidates, we revealed higher methylation rates of RAS-like estrogen-regulated growth inhibitor (RERG) in biopsy specimens of nasopharyngeal carcinoma more conveniently by using restriction enzyme-based real-tim e PCR. This result may help to improve cancer screening strategies. We profiled microRNAs of nasopharyngeal carcinom...
Source: Environmental Health and Preventive Medicine - Category: Environmental Health Source Type: research
With every passing year, more and more studies and observations demonstrate growing incidence of oral cancer, a decrease in patients’ age, and an increasing number of epidemiological factors. The aim of the study was to determine the level of awareness among undergraduate and graduate university students regarding the incidence of oral cancer linked with viral infections and high-risk sexual behavior, including oral sex. Self-administered questionnaire-based survey was carried out among 196 Polish students aged 19 to 25 years. It was found that the young adults understood the meaning of human papillomavirus (HPV), bu...
Source: Medicine - Category: Internal Medicine Tags: Research Article: Meta-Analysis of Observational Studies in Epidemiology Source Type: research
More News: Cancer | Cancer & Oncology | Carcinoma | Cervical Cancer | Genital Warts | Human Papillomavirus (HPV) | Oral Cancer | Toxicology