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https://www.readbyqxmd.com/read/28334399/association-of-hiv-status-with-local-immune-response-to-anal-squamous-cell-carcinoma-implications-for-immunotherapy
#1
Elizabeth L Yanik, Genevieve J Kaunitz, Tricia R Cottrell, Farah Succaria, Tracee L McMiller, Maria L Ascierto, Jessica Esandrio, Haiying Xu, Aleksandra Ogurtsova, Toby Cornish, Evan J Lipson, Suzanne L Topalian, Eric A Engels, Janis M Taube
Importance: The programmed cell death protein 1 (PD-1) and programmed death-ligand 1 (PD-L1) pathway play an important immunosuppressive role in cancer and chronic viral infection, and have been effectively targeted in cancer therapy. Anal squamous cell carcinoma (SCC) is associated with both human papillomavirus and HIV infection. To date, patients with HIV have been excluded from most trials of immune checkpoint blocking agents, such as anti-PD-1 and anti-PD-L1, because it was assumed that their antitumor immunity was compromised compared with immunocompetent patients...
March 23, 2017: JAMA Oncology
https://www.readbyqxmd.com/read/28330110/sequence-based-approach-for-rapid-identification-of-cross-clade-cd8-t-cell-vaccine-candidates-from-all-high-risk-hpv-strains
#2
Krishna P Singh, Neeraj Verma, Bashir A Akhoon, Vishal Bhatt, Shishir K Gupta, Shailendra K Gupta, Suchi Smita
Human papilloma virus (HPV) is the primary etiological agent responsible for cervical cancer in women. Although in total 16 high-risk HPV strains have been identified so far. Currently available commercial vaccines are designed by targeting mainly HPV16 and HPV18 viral strains as these are the most common strains associated with cervical cancer. Because of the high level of antigenic specificity of HPV capsid antigens, the currently available vaccines are not suitable to provide cross-protection from all other high-risk HPV strains...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28327951/hpv16-dna-and-integration-in-normal-and-malignant-epithelium-implications-for-the-etiology-of-laryngeal-squamous-cell-carcinoma
#3
X Chen, L Gao, E M Sturgis, Z Liang, Y Zhu, X Xia, X Zhu, X Chen, G Li, Z Gao
Background: Molecular evidence suggests that human papillomavirus (HPV) has a role in the etiology of oropharyngeal squamous cell carcinoma. However, the role of HPV in laryngeal squamous cell carcinoma (LSCC) is unclear. Patients and Methods: We conducted a case-control study using tumor tissue specimens from 300 LSCC patients and vocal cord polyp specimens from 300 cancer-free controls. HPV genotype, HPV16 viral load and viral integration status, and p16 expression were determined...
January 23, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28326651/current-activities-and-future-directions-of-comprehensive-hepatitis-control-measures-in-japan-a-supportive-role-of-hepatitis-information-center-in-building-a-solid-foundation
#4
Noriko Oza, Hiroshi Isoda, Toshiki Ono, Tatsuya Kanto
In Japan, hepatitis B or C virus infection has been a major health issue. For the prevention of liver-related deaths, multifaceted strategies have been taken against hepatitis virus. In Fiscal Year (FY) 2002, nationwide screening for hepatitis was started as a part of health examinations provided by municipal governments. From FY2007, the hepatitis treatment network has been strengthened by the nationwide establishment of regional government-based hepatitis treatment systems, comprising linked regional core centers, specialized institutions for hepatitis treatment, primary care physicians and regional governments...
March 21, 2017: Hepatology Research: the Official Journal of the Japan Society of Hepatology
https://www.readbyqxmd.com/read/28325688/current-and-emerging-molecular-tests-for-human-papillomavirus-related-neoplasia-in-the-genomic-era
#5
REVIEW
Sixto M Leal, Margaret L Gulley
Laboratory tests have a key role in preventing human papillomavirus (HPV)-driven carcinomas and in guiding therapeutic interventions. An understanding of the virology, immunology, and carcinogenesis of HPV is essential for choosing appropriate diagnostic test modalities and developing new and even more effective cancer prevention strategies. HPV infects basal epithelial cells on multiple surfaces and induces carcinoma primarily in the cervix and the oropharynx. HPV types are stratified as high risk or low risk based on their carcinogenic potential, driven largely by viral interference with cell cycle regulation and the DNA damage response to promote continuous cell division while thwarting apoptosis, which enables mutation accumulation...
March 18, 2017: Journal of Molecular Diagnostics: JMD
https://www.readbyqxmd.com/read/28324233/diagnosis-and-treatment-of-kaposi-sarcoma
#6
REVIEW
Johann W Schneider, Dirk P Dittmer
Kaposi sarcoma (KS) is the most common neoplasm of people living with HIV today. In Sub-Saharan Africa, KS is among the most common cancers in men, overall. Not only HIV-positive individuals present with KS; any immune compromised person infected with KS-associated herpesvirus (KSHV) or human herpesvirus 8 is at risk: the elderly, children in KSHV-endemic areas, and transplant recipients. KS diagnosis is based on detection of the viral protein latency-associated nuclear antigen (LANA) in the biopsy, but not all cases of KS are the same or will respond to the same therapy...
March 21, 2017: American Journal of Clinical Dermatology
https://www.readbyqxmd.com/read/28323757/the-performance-of-human-papillomavirus-biomarkers-in-predicting-anal-high-grade-squamous-intraepithelial-lesions-in-gay-and-bisexual-men
#7
Fengyi Jin, Jennifer M Roberts, Andrew E Grulich, I Mary Poynten, Dorothy A Machalek, Alyssa Cornall, Samuel Phillips, Deborah Ekman, Ross L Mcdonald, Richard J Hillman, David J Templeton, Annabelle Farnsworth, Suzanne M Garland, Christopher K Fairley, Sepehr N Tabrizi
BACKGROUND: We evaluate the performance of human papillomavirus (HPV) biomarkers in prediction of anal histological high-grade squamous intraepithelial lesions (HSIL) in gay and bisexual men (GBM) in Sydney, Australia. DESIGN: Baseline analysis of a three-year cohort study METHODS:: The Study of the Prevention of Anal Cancer (SPANC) is natural history study of anal HPV infection in GBM aged ≥35 years. All participants completed cytological and histological assessments...
March 18, 2017: AIDS
https://www.readbyqxmd.com/read/28317574/role-of-oral-microbial-infections-in-oral-cancer
#8
REVIEW
Brett L Ferguson, Scott Barber, Imani H Asher, Chalmers R Wood
The role of bacterial and viral carcinogenesis in the oral cavity is increasingly of interest, as a means to provide more methods of cancer prevention. There may be relationships between bacteria and multiple strains of viruses in the progression of malignancy. Cancer cause is closely related to the type of carcinogen, as well as the synergistic or additive actions of combined risk factors, the susceptibility of the host, and duration of interaction between host and exposure to risk factor. Much research is underway to further define the role of microbial and bacterial agents in the progression of malignancy...
April 2017: Dental Clinics of North America
https://www.readbyqxmd.com/read/28317077/de-novo-cancer-in-patients-on-dialysis-and-after-renal-transplantation-north-western-italy-1997-2012
#9
Valentina Mazzucotelli, Pierluca Piselli, Diana Verdirosi, Claudia Cimaglia, Giovanni Cancarini, Diego Serraino, Silvio Sandrini
BACKGROUND: Kidney transplant recipients (KTR) are known to have a higher risk of cancer than the general population, especially of malignancies related to oncogenic viral infections. This study assessed the incidence of de novo malignancies (DNMs) in patients receiving kidney transplantation and in dialysis patients (DP) on the waiting list for transplantation at the same centre. The aim was to quantify the contribution of post-transplant immunosuppression to the underlying risk of developing a DNM in dialysis patients on the waiting list for kidney transplant...
March 19, 2017: Journal of Nephrology
https://www.readbyqxmd.com/read/28298901/unveiling-another-missing-piece-in-ebv-driven-lymphomagenesis-ebv-encoded-micrornas-expression-in-eber-negative-burkitt-lymphoma-cases
#10
Lucia Mundo, Maria R Ambrosio, Matteo Picciolini, Giuseppe Lo Bello, Sara Gazaneo, Leonardo Del Porro, Stefano Lazzi, Mohsen Navari, Noel Onyango, Massimo Granai, Cristiana Bellan, Giulia De Falco, Davide Gibellini, Pier P Piccaluga, Lorenzo Leoncini
Epstein-Barr virus (EBV) is a gammaherpesvirus linked to a number of lymphoid and epithelial malignancies, including Burkitt lymphoma (BL) in which its frequency ranges from 30% in sporadic cases to 100% in the endemic ones. The possible contribution of EBV to BL pathogenesis is largely unknown. It has been suggested that EBV may be associated with all of the cases, including those diagnosed as EBV negative by a mechanism of hit-and-run. Early during oncogenesis, viral genes are essential for initiating disease...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28288626/hepatitis-c-related-hepatocellular-carcinoma-in-the-era-of-new-generation-antivirals
#11
REVIEW
Thomas F Baumert, Frank Jühling, Atsushi Ono, Yujin Hoshida
Hepatitis C virus infection is a major cause of hepatocellular carcinoma worldwide. Interferon has been the major antiviral treatment, yielding viral clearance in approximately half of patients. New direct-acting antivirals substantially improved the cure rate to above 90%. However, access to therapies remains limited due to the high costs and under-diagnosis of infection in specific subpopulations, e.g., baby boomers, inmates, and injection drug users, and therefore, hepatocellular carcinoma incidence is predicted to increase in the next decades even in high-resource countries...
March 14, 2017: BMC Medicine
https://www.readbyqxmd.com/read/28283662/exhaustion-associated-regulatory-regions-in-cd8-tumor-infiltrating-t-cells
#12
Giuliana P Mognol, Roberto Spreafico, Victor Wong, James P Scott-Browne, Susan Togher, Alexander Hoffmann, Patrick G Hogan, Anjana Rao, Sara Trifari
T-cell exhaustion is a progressive loss of effector function and memory potential due to persistent antigen exposure, which occurs in chronic viral infections and cancer. Here we investigate the relation between gene expression and chromatin accessibility in CD8(+) tumor-infiltrating lymphocytes (TILs) that recognize a model tumor antigen and have features of both activation and functional exhaustion. By filtering out accessible regions observed in bystander, nonexhausted TILs and in acutely restimulated CD8(+) T cells, we define a pattern of chromatin accessibility specific for T-cell exhaustion, characterized by enrichment for consensus binding motifs for Nr4a and NFAT transcription factors...
March 10, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28282583/control-of-immune-escaped-human-papilloma-virus-is-regained-after-therapeutic-vaccination
#13
REVIEW
Wenbo Ma, Cornelis Jm Melief, Sjoerd H van der Burg
High-risk human papillomaviruses infect the basal cells of human epithelia. There it deploys several mechanisms to suppress pathogen receptor recognition signalling, impeding the immune system to control viral infection. Furthermore, infected cells become more resistant to type I and II interferon, tumour necrosis factor-α and CD40 activation, via interference with downstream programs halting viral replication or regulating the proliferation and cell death. Consequently, some infected individuals fail to raise early protein-specific T-cell responses that are strong enough to protect against virus-induced premalignant disease and ultimately cancer...
March 7, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28281267/a-novel-colorimetric-pcr-based-biosensor-for-detection-and-quantification-of-hepatitis-b-virus
#14
Li Yang, Mei Li, Feng Du, Gangyi Chen, Afshan Yasmeen, Zhuo Tang
Hepatitis B virus (HBV) can cause viral infection that attacks the liver and it is a major global health problem that puts people at a high risk of death from cirrhosis of the liver and liver cancer. HBV has infected one-third of the worldwide population, and 350 million people suffer from chronic HBV infection. For these reasons, development of an accurate, sensitive, and expedient detection method for diagnosing, monitoring, and assessing therapeutic response of HBV is very necessary and urgent for public health and disease control...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28279982/a-prosurvival-dna-damage-induced-cytoplasmic-interferon-response-is-mediated-by-end-resection-factors-and-is-limited-by-trex1
#15
Erkin Erdal, Syed Haider, Jan Rehwinkel, Adrian L Harris, Peter J McHugh
Radiotherapy and chemotherapy are effective treatment methods for many types of cancer, but resistance is common. Recent findings indicate that antiviral type I interferon (IFN) signaling is induced by these treatments. However, the underlying mechanisms still need to be elucidated. Expression of a set of IFN-stimulated genes comprises an IFN-related DNA damage resistance signature (IRDS), which correlates strongly with resistance to radiotherapy and chemotherapy across different tumors. Classically, during viral infection, the presence of foreign DNA in the cytoplasm of host cells can initiate type I IFN signaling...
March 9, 2017: Genes & Development
https://www.readbyqxmd.com/read/28276007/investigation-on-the-association-between-thyroid-tumorigeneses-and-herpesviruses
#16
J F M Almeida, A H Campos, M A Marcello, N E Bufalo, C L Rossi, L H P Amaral, A B Marques, L L Cunha, C A Alvarenga, P C Tincani, A J Tincani, L S Ward
Herpesviruses have been associated with various human malignancies and with thyroid autoimmunity. Aiming to investigate the presence of these viruses in thyroid nodules, we analyzed serum and thyroid tissue from 183 patients (83 benign and 100 malignant thyroid nodules). We also obtained 104 normal thyroid tissues extracted from the contralateral lobe of these patients. We used ELISA to screen the serology of all patients and a real-time quantitative PCR to analyze thyroid tissue viral load in antibody-positive patients...
March 8, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28271981/understanding-epstein-barr-virus-life-cycle-with-proteomics-a-temporal-analysis-of-ubiquitination-during-virus-reactivation
#17
Dong-Wen Lv, Jun Zhong, Kun Zhang, Akhilesh Pandey, Renfeng Li
Epstein-Barr virus (EBV) is a human γ-herpesvirus associated with cancer, including Burkitt lymphoma, nasopharyngeal, and gastric carcinoma. EBV reactivation in latently infected B cells is essential for persistent infection whereby B cell receptor (BCR) activation is a physiologically relevant stimulus. Yet, a global view of BCR activation-regulated protein ubiquitination is lacking when EBV is actively replicating. We report here, for the first time, the long-term effects of IgG cross-linking-regulated protein ubiquitination and offer a basis for dissecting the cellular environment during the course of EBV lytic replication...
January 2017: Omics: a Journal of Integrative Biology
https://www.readbyqxmd.com/read/28271657/dna-damage-response-is-hijacked-by-human-papillomaviruses-to-complete-their-life-cycle
#18
Shi-Yuan Hong
The DNA damage response (DDR) is activated when DNA is altered by intrinsic or extrinsic agents. This pathway is a complex signaling network and plays important roles in genome stability, tumor transformation, and cell cycle regulation. Human papillomaviruses (HPVs) are the main etiological agents of cervical cancer. Cervical cancer ranks as the fourth most common cancer among women and the second most frequent cause of cancer-related death worldwide. Over 200 types of HPVs have been identified and about one third of these infect the genital tract...
2017: Journal of Zhejiang University. Science. B
https://www.readbyqxmd.com/read/28271648/henoch-sch%C3%A3-nlein-purpura-with-concurrent-cytomegalovirus-duodenitis
#19
Sae Bom Shin, Yeong Jin Choi, Jieun Lee, Bong Gye Kwak, Yong Hee Kim, Kyung Sun Ha, Jin Hyoung Kang
Henoch-Schönlein purpura (HSP) is a systemic vasculitis involving the small vessels with distinct clinical features. The etiology of HSP is diverse, and viral infection is one of the many predisposing factors. Cytomegalovirus (CMV) infection mostly affects immune-suppressed patients, but rarely patients with normal immunity can also be affected. Authors experienced a case of HSP patient, with underlying small-cell lung cancer (SCLC) with CMV duodenitis. This is a rare case of HSP diagnosed in SCLC patient with predisposing factor of CMV infection...
February 7, 2017: Infection & Chemotherapy
https://www.readbyqxmd.com/read/28271570/single-domain-antibodies-for-the-knockdown-of-cytosolic-and-nuclear-proteins
#20
REVIEW
Thomas Böldicke
Single domain antibodies (sdAbs) from camels or sharks comprise only the variable heavy chain domain. Human sdAbs comprise the variable domain of the heavy chain (VH) or light chain (VL) and can be selected from human antibodies. SdAbs are stable, non aggregating molecules in vitro and in vivo compared to complete antibodies and scFv fragments. They are excellent novel inhibitors of cytosolic/nuclear proteins because they are correctly folded inside the cytosol in contrast to scFv fragments. SdAbs are unique because of their excellent specificity and possibility to target posttranslational modifications such as phosphorylation sites, conformers or interaction regions of proteins that cannot be targeted with genetic knockout techniques and are impossible to knockdown with RNAi...
March 8, 2017: Protein Science: a Publication of the Protein Society
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