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https://www.readbyqxmd.com/read/28937732/reducing-agent-assisted-excessive-galvanic-replacement-mediated-seed-mediated-synthesis-of-porous-gold-nanoplates-and-highly-efficient-gene-thermo-cancer-therapy
#1
Seounghun Kang, Kyunglee Kang, Hyun Huh, Hyungjun Kim, Sung-Jin Chang, Tae Jung Park, Ki Soo Chang, Dal-Hee Min, Hongje Jang
Porous Au nanoplates (pAuNPs) were manufactured by a reducing agent-assisted galvanic replacement reaction on Ag nanoplates using a seed-mediated synthetic approach. Two core additives, polyvinylpyrrolidone and L-ascorbic acid, prevented fragmentation and proceeded secondary growth. By controlling the concentration of the additives and the amount of replacing ion AuCl4-, various nanostructures including nanoplates with holes, nanoframes, porous nanoplates, and bumpy nanoparticles with unity and homogeneity were synthesized...
September 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28937369/study-of-association-of-epstein-barr-virus-in-lymphomas-by-epstein-barr-virus-encoded-rna-in-situ-hybridization-an-indian-perspective-from-a-tertiary-care-cancer-institute
#2
Roshani Gala, Jatin S Gandhi, Gurudutt Gupta, Shrruti K Grover, Anila Sharma, Sunil Pasricha, Anurag Mehta
BACKGROUND: The Epstein-Barr virus (EBV), also called human herpesvirus 4, is a virus of the herpes family. The EBV-associated lymphomas include Burkitt lymphoma, classic Hodgkin lymphoma (HL), lymphomas arising in immunocompromised individuals, peripheral T-cell lymphomas, angioimmunoblastic T-cell lymphoma, extranodal nasal-type natural killer/T-cell lymphoma, and other rare histotypes. OBJECTIVE: The present study evaluated the role of EBV as an etiologic agent in various lymphomas and determined an Indian perspective in a tertiary care cancer center compared to that of Western literature...
July 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28935568/genetically-engineered-oncolytic-newcastle-disease-virus-mediates-cytolysis-of-prostate-cancer-stem-like-cells
#3
Raghunath Shobana, Raghavendra Sumanth Pudupakam, Adria Allen, Moanaro Biswas, Nammalwar Sriranganathan
Oncolytic virotherapy is a promising novel approach that overcomes the limitations posed by radiation and chemotherapy. In this study, the oncolytic efficacy of a recombinant Newcastle disease virus (rNDV) BC-KLQL-GFP, against prostate cancer stem-like/tumor initiating cells was evaluated. Xenograft derived prostaspheres (XPS) induced tumor more efficiently than monolayer cell derived prostaspheres (MCPS) in nude mice. Primary and secondary XPS show enhanced self-renewal and clonogenic potential compared to MCPS...
September 18, 2017: Journal of Biotechnology
https://www.readbyqxmd.com/read/28935244/contribution-of-hepatitis-b-c-virus-to-liver-cancer-in-china-north-areas-experience-from-chinese-national-cancer-center
#4
Minjie Wang, Yuting Wang, Xiaoshuang Feng, Ruijun Wang, Yanmei Wang, Hongmei Zeng, Jun Qi, Hong Zhao, Ni Li, Jianqiang Cai, Chunfeng Qu
AIM: To understand the impact of hepatitis B virus (HBV) and/or hepatitis C virus (HCV) on primary liver cancer (PLC) in China north areas. METHODS: A total of 2172 histologically confirmed PLC patients in National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences during January 1, 2003 and December 31, 2014 were enrolled. In some HCC cases we sequenced HBV PreS-S gene, C/E1 and NS5B fragment of HCV, and analyzed their genotypes. RESULTS: Among histologically confirmed 2172 PLC cases, 1823 (83...
September 18, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28934210/oncolytic-potency-and-reduced-virus-tumor-specificity-in-oncolytic-virotherapy-a-mathematical-modelling-approach
#5
Khaphetsi Joseph Mahasa, Amina Eladdadi, Lisette de Pillis, Rachid Ouifki
In the present paper, we address by means of mathematical modeling the following main question: How can oncolytic virus infection of some normal cells in the vicinity of tumor cells enhance oncolytic virotherapy? We formulate a mathematical model describing the interactions between the oncolytic virus, the tumor cells, the normal cells, and the antitumoral and antiviral immune responses. The model consists of a system of delay differential equations with one (discrete) delay. We derive the model's basic reproductive number within tumor and normal cell populations and use their ratio as a metric for virus tumor-specificity...
2017: PloS One
https://www.readbyqxmd.com/read/28934154/why-human-papillomaviruses-activate-the-dna-damage-response-ddr-and-how-cellular-and-viral-replication-persists-in-the-presence-of-ddr-signaling
#6
REVIEW
Molly L Bristol, Dipon Das, Iain M Morgan
Human papillomaviruses (HPV) require the activation of the DNA damage response (DDR) in order to undergo a successful life cycle. This activation presents a challenge for the virus and the infected cell: how does viral and host replication proceed in the presence of a DDR that ordinarily arrests replication; and how do HPV16 infected cells retain the ability to proliferate in the presence of a DDR that ordinarily arrests the cell cycle? This raises a further question: why do HPV activate the DDR? The answers to these questions are only partially understood; a full understanding could identify novel therapeutic strategies to target HPV cancers...
September 21, 2017: Viruses
https://www.readbyqxmd.com/read/28932636/cd103-tumor-infiltrating-lymphocytes-are-tumor-reactive-intraepithelial-cd8-t-cells-associated-with-prognostic-benefit-and-therapy-response-in-cervical-cancer
#7
Fenne L Komdeur, Thalina M Prins, Stephanie van de Wall, Annechien Plat, G Bea A Wisman, Harry Hollema, Toos Daemen, David N Church, Marco de Bruyn, Hans W Nijman
Human papilloma virus (HPV)-induced cervical cancer constitutively expresses viral E6/E7 oncoproteins and is an excellent target for T cell-based immunotherapy. However, not all tumor-infiltrating T cells confer equal benefit to patients, with epithelial T cells being superior to stromal T cells. To assess whether the epithelial T cell biomarker CD103 could specifically discriminate the beneficial antitumor T cells, association of CD103 with clinicopathological variables and outcome was analyzed in the TCGA cervical cancer data set (n = 304) and by immunohistochemistry (IHC) in an independent cohort (n = 460)...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28932365/causal-role-of-infectious-agents-in-cancer-an-overview
#8
REVIEW
Jila Masrour-Roudsari, Soheil Ebrahimpour
Cancer is a complex group of diseases with multiple eventual causes. The underlying causes are not fully known. Thus, learning more about the known causes of cancer is an important issue. Moreover, among these factors, infection and its association to cancers is controversial. Although, it seems that the genome instability of the cells can initiate cancer development. The purpose of this review was to present the role of infection in the development of cancer. Infectious agents, such as hepatitis B (HBV) and C viruses (HCV), Epstein-Barr virus (EBV), human papillomavirus (HPV), human immunodeficiency virus type 1 (HIV-1), Helicobacter pylori (H...
2017: Caspian Journal of Internal Medicine
https://www.readbyqxmd.com/read/28932315/experimental-hepatic-carcinogenesis-oxidative-stress-and-natural-antioxidants
#9
REVIEW
Velid Unsal, Ergül Belge-Kurutaş
Hepatocellular carcinoma is one of the most common cancers in the world, and it is influenced by agents such as DEN, 2-AAF, phenobarbital, alcohol, aflatoxin B1 metabolite or hepatitis viruses (B and C). Oxidative stress is becoming recognized as a key factor in the progression of hepatocarcinogenesis. Reactive oxygen species can play a leading role in initiation and promotion of hepatic carcinogenesis. The metabolites of DEN Diethylnitrosamine (DEN) mediate the binding of tumour promoters by covalently binding to the DNA with one or two oxidation-providing electrons...
August 15, 2017: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28932224/shrimp-mir-10a-is-co-opted-by-white-spot-syndrome-virus-to-increase-viral-gene-expression-and-viral-replication
#10
Jiun-Yan Huang, Shih-Ting Kang, I-Tung Chen, Li-Kwan Chang, Shih-Shun Lin, Guang-Hsiung Kou, Chia-Ying Chu, Chu-Fang Lo
Members of the microRNA miR-10 family are highly conserved and play many important roles in diverse biological mechanisms, including immune-related responses and cancer-related processes in certain types of cancer. In this study, we found the most highly upregulated shrimp microRNA from Penaeus vannamei during white spot syndrome virus (WSSV) infection was miR-10a. After confirming the expression level of miR-10a by northern blot and quantitative RT-PCR, an in vivo experiment showed that the viral copy number was decreased in miR-10a-inhibited shrimp...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28931682/susceptibility-of-human-endogenous-retrovirus-type-k-to-reverse-transcriptase-inhibitors
#11
Rafael A Contreras-Galindo, Derek Dube, Koh Fujinaga, Mark H Kaplan, David M Markovitz
Human Endogenous Retroviruses make up 8% of the human genome. The HERV-K HML-2 (HK2) family contains proviruses that are the most recent entrants into the human germline and are transcriptionally active. In HIV-1 infection and cancer, HK2 genes produce retroviral particles that appear to be infectious, yet the replication capacity of these viruses and potential pathogenicity has been difficult to ascertain. In this report, we screened the efficacy of commercially available reverse transcriptase inhibitors (RTIs) at inhibiting the enzymatic activity of the HK2 RT and HK2 genomic replication...
September 20, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28931234/the-evva-cohort-study-anal-and-cervical-type-specific-human-papillomavirus-prevalence-persistence-and-cytologic-findings-in-women-living-with-hiv
#12
Alexandra de Pokomandy, Elaina Kaufman, Christina de Castro, Marie-Hélène Mayrand, Ann N Burchell, Marina Klein, Louise Charest, Manon Auger, Sophie Rodrigues-Coutlée, François Coutlée
Background: The risk of anal cancer due to high-risk human papillomavirus (HR-HPV) is higher in women living with human immunodeficiency virus (HIV) than in the general population. We present findings of cervical and anal HPV and cytologic tests at baseline in the EVVA cohort study and HPV persistence data 6 months after baseline. Methods: Semiannual visits included questionnaires, chart reviews, cervical/anal cytologic and cervical/anal HPV testing for 2 years...
August 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28931212/temozolomide-resistant-human-brain-tumor-stem-cells-are-susceptible-to-recombinant-vesicular-stomatitis-virus-and-double-deleted-vaccinia-virus-in-vitro
#13
Bin Jiang, Xueqing Lun, Xiaoguang Hao, Yihua Wang, Xin Yin, Dezhang Huang, Wei He, Zhigang Wang
BACKGROUND: Malignant glioma still has a poor prognosis and remains incurable. Although temozolomide (TMZ) has demonstrated antitumor activity, its use recently has been halted because of some patients' resistance to this drug. New treatments are desperately needed. An oncolytic virus (virotherapy) is being developed as a novel cancer therapy. We have previously reported that recombinant Vesicular Stomatitis Virus (VSV-ΔM51) and double deleted Vaccinia Virus (vvDD) infected and killed glioma cell lines in vitro and prolonged survival in animal glioma models...
September 16, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28930604/therapeutic-startegies-for-human-papillomavirus-infection-and-associated-cancers
#14
Alok Chandra Bharti, Tejveer Singh, Anjali Bhat, Deepti Pande, Mohit Jadli
Human papillomavirus (HPV) infection is linked to development of cancer of cervix, vagina, vulva, penis, ano-genital and non-genital oro-pharyngeal sites. HPV being a sexually transmitted virus infects both genders equally but with higher chances of pathological outcome in women. In the absence of organized screening programs, women report HPV-infected lesions at relatively advanced stages where they are subjected to standard treatments that are not HPV-specific. HPV infection-driven lesions usually take 10-20 years for malignant progression and are preceded by well-characterized pre-cancer stages...
January 1, 2018: Frontiers in Bioscience (Elite Edition)
https://www.readbyqxmd.com/read/28930164/liver-cancer-molecular-characterization-clonal-evolution-and-cancer-stem-cells
#15
REVIEW
Germana Castelli, Elvira Pelosi, Ugo Testa
Liver cancer is the second most common cause of cancer-related death. The major forms of primary liver cancer are hepatocellular carcinoma (HCC) and intrahepatic cholangiocarcinoma (iCCA). Both these tumors develop against a background of cirrhotic liver, non-alcoholic fatty liver disease, chronic liver damage and fibrosis. HCC is a heterogeneous disease which usually develops within liver cirrhosis related to various etiologies: hepatitis B virus (HBV) infection (frequent in Asia and Africa), hepatitis C virus (HCV), chronic alcohol abuse, or metabolic syndrome (frequent in Western countries)...
September 20, 2017: Cancers
https://www.readbyqxmd.com/read/28929192/role-of-pd-1-in-immunity-and-diseases
#16
Kenji Chamoto, Muna Al-Habsi, Tasuku Honjo
Immunity developed to defend our bodies from foreign particles, including bacteria and viruses. Although effector cells responsible for acquired immunity, mainly T cells, and B cells, are able to distinguish self from non-self, they sometimes attack the body's tissues because of imperfect central tolerance. Several immune check points developed to limit overactivation of these cells. One of the most important immune checkpoints is programmed cell death-1 (PD-1), which is expressed mainly on activated lymphocytes...
September 20, 2017: Current Topics in Microbiology and Immunology
https://www.readbyqxmd.com/read/28928885/associations-of-epstein-barr-virus-dna-in-pbmcs-and-the-subtypes-with-breast-cancer-risk
#17
Wei Zhang, Min-Yi Wang, Xue-Ling Wei, Ying Lin, Feng-Xi Su, Xiao-Ming Xie, Lu-Ying Tang, Ze-Fang Ren
Objective: Epstein-Barr virus (EBV) has been found to be implicated in the development of breast cancer. The purpose of the present study was to identify the associations of EBV DNA and the subtypes in peripheral blood mononuclear cells (PBMCs) with the risk of breast cancer. Material and Methods: A case-control study with 671 breast cancer cases and 859 age-matched controls was conducted in Guangzhou, China. Face-to-face interviews were performed and blood samples were collected immediately after admission to the hospital for patients or after the interview for controls...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28928855/association-between-extranodal-natural-killer-t-cell-lymphoma-and-hepatitis-b-viral-infection-a-case-control-study
#18
Kefeng Wang, Hang Yang, Wenjun He, Yi Xia, Zhongjun Xia, Su Li, Huiqiang Huang, Zhiming Li, Panpan Liu, Wenqi Jiang
Extranodal natural killer/T-cell lymphoma, nasal type (ENKTL) is a rare subtype of lymphoma that is often associated with poor clinical prognosis. Several studies have shown that hepatitis B virus (HBV) infection may be associated with increased risk of B-cell non-Hodgkin lymphoma; however, because of the rarity of ENKTL, little is known about its association with HBV. Our study aimed to assess whether HBV infection was associated with increased odds of ENKTL. We conducted a hospital-based case-control study including 417 ENKTL cases and 488 age- and sex-matched subjects with nonmalignant diseases unrelated to HBV infection...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28928848/primary-lymphoepithelioma-like-carcinoma-of-the-lung-an-unusual-cancer-and-clinical-outcomes-of-14-patients
#19
Lan Lin, Tingyan Lin, Bangwei Zeng
Advanced lung cancer is considered to exhibit a poor prognosis; however, the pulmonary lymphoepithelioma-like carcinoma (LELC), a rare subtype of non-small cell lung cancer (NSCLC), exhibits an improved prognosis, compared with non-LELC. The present study aimed at investigating the clinical manifestation, imaging characteristics, pathology, tumor markers, treatment and prognosis of primary LELC of the lung. A total of 14 patients with pulmonary LELC were confirmed by surgery and pathology. Clinical data of those patients were retrospectively reviewed including age, sex, smoking history, symptoms, computed tomography (CT) results, Epstein-Barr virus-encoded RNA (EBER) status, treatment and outcomes...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927823/t-cell-therapies-for-human-polyomavirus-diseases
#20
REVIEW
Sarah I Davies, Pawel Muranski
Rapid restoration of virus-specific T immunity via adoptive transfer of ex vivo generated T cells has been proven as a powerful therapy for patients with advanced cancers and refractory viral infections such as cytomegalovirus (CMV) and Epstein-Barr virus (EBV). BK virus (BKV), John Cunningham virus (JCV), and Merkel cell carcinoma virus (MCV) are the members of the rapidly growing human polyomavirus (hPyV) family that commonly infects most healthy humans. These viruses have a clearly established potential for causing severe end-organ damage or malignant transformation, especially in individuals with weakened immunity who are unable to mount or regain endogenous T-cell responses as a result of underlying leukemia or iatrogenic immunosuppression in autoimmunity, bone marrow and solid organ transplant settings...
September 15, 2017: Cytotherapy
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