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Oncogenesis

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https://www.readbyqxmd.com/read/29792187/carbonic-anhydrase-related-protein-expression-in-astrocytomas-and-oligodendroglial-tumors
#1
Sini L Karjalainen, Hannu K Haapasalo, Ashok Aspatwar, Harlan Barker, Seppo Parkkila, Joonas A Haapasalo
BACKGROUND: Carbonic anhydrase related proteins (CARPs) VIII, X and XI functionally differ from the other carbonic anhydrase (CA) enzymes. Structurally, they lack the zinc binding residues, which are important for enzyme activity of classical CAs. The distribution pattern of the CARPs in fetal brain implies their role in brain development. In the adult brain, CARPs are mainly expressed in the neuron bodies but only weaker reactivity has been found in the astrocytes and oligodendrocytes...
May 23, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29789417/mapping-the-hla-ligandome-of-colorectal-cancer-reveals-an-imprint-of-malignant-cell-transformation
#2
Markus W Löffler, Daniel J Kowalewski, Linus Backert, Jörg Bernhardt, Patrick Adam, Heiko Schuster, Florian Dengler, Daniel Backes, Hans-Georg Kopp, Stefan Beckert, Silvia Wagner, Ingmar Königsrainer, Oliver Kohlbacher, Lothar Kanz, Alfred Königsrainer, Hans-Georg Rammensee, Stefan Stevanovic, Sebastian P Haen
Immune cell infiltrates have proven highly relevant for colorectal carcinoma (CRC) prognosis, making CRC a promising candidate for immunotherapy. Since tumors interact with the immune system via HLA-presented peptide ligands, exact knowledge of the peptidome constitution is fundamental for understanding this relationship. Here we comprehensively describe the naturally presented HLA-ligandome of CRC and corresponding non-malignant colon (NMC) tissue. Mass spectrometry identified 35,367 and 28,132 HLA-class I ligands on CRC and NMC, attributable to 7,684 and 6,312 distinct source proteins, respectively...
May 22, 2018: Cancer Research
https://www.readbyqxmd.com/read/29787736/g-quadruplexes-in-the-bap1-promoter-positively-regulate-its-expression
#3
Yingzhou Li, Xiao Zhang, Yang Gao, Jinming Shi, Liping Tang, Guangchao Sui
Accumulating evidence suggests a key role of BAP1 in oncogenesis, but mechanisms regulating BAP1 gene expression remain unexplored. In this report, we revealed that the BAP1 promoter contains multiple G-tracts in its negative strand with high potential of forming G-quadruplex (G4) structures. In circular dichroism studies, synthesized oligonucleotides within these G-rich regions upstream the BAP1 transcription start site showed molar ellipticity at specific wavelengths characteristic of G4 structures. Analyses of these oligonucleotides by native polyacrylamide gel electrophoresis revealed formation of multiple types of G4 structures...
May 19, 2018: Experimental Cell Research
https://www.readbyqxmd.com/read/29785138/a-review-of-soft-tissue-sarcomas-translation-of-biological-advances-into-treatment-measures
#4
REVIEW
Ngoc T Hoang, Luis A Acevedo, Michael J Mann, Bhairavi Tolani
Soft-tissue sarcomas are rare malignant tumors arising from connective tissues and have an overall incidence of about five per 100,000 per year. While this diverse family of malignancies comprises over 100 histological subtypes and many molecular aberrations are prevalent within specific sarcomas, very few are therapeutically targeted. Instead of utilizing molecular signatures, first-line sarcoma treatment options are still limited to traditional surgery and chemotherapy, and many of the latter remain largely ineffective and are plagued by disease resistance...
2018: Cancer Management and Research
https://www.readbyqxmd.com/read/29785026/resetting-the-epigenetic-balance-of-polycomb-and-compass-function-at-enhancers-for-cancer-therapy
#5
Lu Wang, Zibo Zhao, Patrick A Ozark, Damiano Fantini, Stacy A Marshall, Emily J Rendleman, Kira A Cozzolino, Nundia Louis, Xingyao He, Marc A Morgan, Yoh-Hei Takahashi, Clayton K Collings, Edwin R Smith, Panagiotis Ntziachristos, Jeffrey N Savas, Lihua Zou, Rintaro Hashizume, Joshua J Meeks, Ali Shilatifard
The lysine methyltransferase KMT2C (also known as MLL3), a subunit of the COMPASS complex, implements monomethylation of Lys4 on histone H3 (H3K4) at gene enhancers. KMT2C (hereafter referred to as MLL3) frequently incurs point mutations across a range of human tumor types, but precisely how these lesions alter MLL3 function and contribute to oncogenesis is unclear. Here we report a cancer mutational hotspot in MLL3 within the region encoding its plant homeodomain (PHD) repeats and demonstrate that this domain mediates association of MLL3 with the histone H2A deubiquitinase and tumor suppressor BAP1...
May 21, 2018: Nature Medicine
https://www.readbyqxmd.com/read/29781103/targeting-ubiquitin-specific-protease-7-in-cancer-a-deubiquitinase-with-great-prospects
#6
REVIEW
Farjana Yeasmin Khusbu, Fang-Zhi Chen, Han-Chun Chen
Deubiquitinase (DUB)-mediated cleavage of ubiquitin chain balances ubiquitination and deubiquitination for determining protein fate. USP7 is one of the best characterized DUBs and functionally important. Numerous proteins have been identified as potential substrates and binding partners of USP7; those play crucial roles in diverse array of cellular and biological processes including tumour suppression, cell cycle, DNA repair, chromatin remodelling, and epigenetic regulation. This review aims at summarizing the current knowledge of this wide association of USP7 with many cellular processes that enlightens the possibility of abnormal USP7 activity in promoting oncogenesis and the importance of identification of specific inhibitors...
May 20, 2018: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/29780264/methylation-and-gene-expression-of-bcat1-and-ikzf1-in-colorectal-cancer-tissues
#7
Maher Jedi, Graeme P Young, Susanne K Pedersen, Erin L Symonds
The genes BCAT1 and IKZF1 are hypermethylated in colorectal cancer (CRC), but little is known about how this relates to gene expression. This study assessed the relationship between methylation and gene expression of BCAT1 and IKZF1 in CRC and adjacent non-neoplastic tissues. The tissues were obtained at surgery from 36 patients diagnosed with different stages of CRC (stage I n = 8, stage II n = 13, stage III n = 10, stage IV n = 5). Methylated BCAT1 and IKZF1 were detected in 92% and 72% CRC tissues, respectively, with levels independent of stage ( P  > ...
2018: Clinical Medicine Insights. Oncology
https://www.readbyqxmd.com/read/29780256/the-utilization-of-next-generation-sequencing-to-detect-somatic-mutations-and-predict-clinical-prognosis-of-chinese-non-small-cell-lung-cancer-patients
#8
Liming Cao, Long Long, Min Li, Huaping Yang, Pengbo Deng, Xinru Mao, Jianxing Xiang, Bing Li, Tengfei Zhang, Chengping Hu
Purpose: The development of next-generation sequencing (NGS) has revolutionized the understanding of oncogenesis of multiple types of cancer, including non-small cell lung cancer (NSCLC). However, there has been some debate over the utility of NGS for predicting patient prognosis and determining molecular targeted therapy. Therefore, we sought to demonstrate the numerous applications of NGS in the prognostic predictions and treatment of NSCLC patients. Materials and methods: We performed NGS on either liquid or tissue tumor biopsies obtained from 53 NSCLC patients...
2018: OncoTargets and Therapy
https://www.readbyqxmd.com/read/29778408/ancient-cancers-and-infection-induced-oncogenesis
#9
Paul W Ewald
Cancers have been reported in bone and soft tissue of ancient agricultural populations. Fossilized bones from prehistoric periods provide evidence of tumors but only one example of cancer. Difficulties in diagnosing the causes of lesions in mummified tissue and fossilized bone, and in interpreting the prevalence of cancers from remains, draw attention to the need for complementary approaches to assess the occurrence of cancer in ancient populations. This paper integrates current knowledge about pathogen induction of cancer with phylogenetic analyses of oncogenic pathogens, and concludes that pathogen-induced cancers were probably generally present in ancient historic and prehistoric human populations...
August 23, 2017: International Journal of Paleopathology
https://www.readbyqxmd.com/read/29778233/female-specific-association-among-i-j-and-k-mitochondrial-genetic-haplogroups-and-cancer-a-longitudinal-cohort-study
#10
Claudio Luchini, Alessia Nottegar, Alberto Vaona, Brendon Stubbs, Jacopo Demurtas, Stefania Maggi, Nicola Veronese
Recent studies highlighted the role of mitochondrial dysregulation in cancer, suggesting that the different mitochondrial haplogroups might play a role in tumorigenesis and risk of cancer development. Our aim is to investigate whether any mitochondrial haplogroups carried a significant higher risk of cancer development in a large prospective cohort of North American people. The haplogroup assignment was performed by a combination of sequencing and PCR-RFLP techniques. Our specific outcome of interest was the incidence of any cancer during follow-up period...
August 2018: Cancer Genetics
https://www.readbyqxmd.com/read/29777397/telomeres-and-telomerase-during-human-papillomavirus-induced-carcinogenesis
#11
REVIEW
Anna Pańczyszyn, Ewa Boniewska-Bernacka, Grzegorz Głąb
Human papillomaviruses (HPVs) belong to a small spherical virus family and are transmitted through direct contact, most often through sexual behavior. More than 200 types of HPV are known, a dozen or so of which are classified as high-risk viruses (HR HPV) and may contribute to the development of cervical cancer. HPV is a small virus with a capsid composed of L1 and L2 proteins, which are crucial for entry to the cell. The infection begins at the basal cell layer and progresses to involve cells from higher layers of the cervical epithelium...
May 18, 2018: Molecular Diagnosis & Therapy
https://www.readbyqxmd.com/read/29776371/lncrna-tug1-promoted-kiaa1199-expression-via-mir-600-to-accelerate-cell-metastasis-and-epithelial-mesenchymal-transition-in-colorectal-cancer
#12
Junfeng Sun, Jiyi Hu, Guojun Wang, Zhen Yang, Chunlin Zhao, Xiefu Zhang, Jiaxiang Wang
BACKGROUND: LncRNA TUG1 has been reported to be highly expressed in CRC samples and cells and promoted metastasis by affecting EMT, indicating a poor prognosis for colorectal cancer (CRC). In this study, we determined the underlying mechanism for tumor oncogenesis of lncRNA TUG1 in CRC metastasis. METHODS: The expressions of miR-600 and KIAA1199 in 76 CRC patients and CRC cells and CRC metastatic tissues were determined using qRT-PCR. Epithelial-mesenchymal transition (EMT)-related proteins were determined using western blot...
May 18, 2018: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/29774131/methylation-of-dna-and-chromatin-as-a-mechanism-of-oncogenesis-and-therapeutic-target-in-neuroblastoma
#13
REVIEW
Ram Mohan Ram Kumar, Nina Felice Schor
Neuroblastoma (NB), a developmental cancer, is often fatal, emphasizing the need to understand its pathogenesis and identify new therapeutic targets. The heterogeneous pathological and clinical phenotype of NB underscores the cryptic biological and genetic features of this tumor that result in outcomes ranging from rapid progression to spontaneous regression. Despite recent genome-wide mutation analyses, most primary NBs do not harbor driver mutations, implicating epigenetically-mediated gene regulatory mechanisms in the initiation and maintenance of NB...
April 24, 2018: Oncotarget
https://www.readbyqxmd.com/read/29774111/ceragenin-csa-13-as-free-molecules-and-attached-to-magnetic-nanoparticle-surfaces-induce-caspase-dependent-apoptosis-in-human-breast-cancer-cells-via-disruption-of-cell-oxidative-balance
#14
Ewelina Piktel, Izabela Prokop, Urszula Wnorowska, Grzegorz Król, Mateusz Cieśluk, Katarzyna Niemirowicz, Paul B Savage, Robert Bucki
Natural antimicrobial peptides and ceragenins, as non-peptide amphipathic mimics, have been proposed as anti-cancer agents. To date, it has been confirmed that cathelicidin LL-37 and ceragenin CSA-13, both in free form and immobilized on the surface of magnetic nanoparticles (MNP@LL-37, MNP@CSA-13) induce apoptosis in colon cancer cells. Nevertheless, the question remains whether ceragenins, as synthetic analogs of LL-37 peptide and mimicking a number of its properties, act as antineoplastic agents in breast cancer cells, where LL-37 peptide stimulates oncogenesis...
April 24, 2018: Oncotarget
https://www.readbyqxmd.com/read/29769340/the-htlv-1-basic-leucine-zipper-factor-hbz-attenuates-repair-of-double-stranded-dna-breaks-via-non-homologous-end-joining-nhej
#15
A W Rushing, K Hoang, N Polakowski, I Lemasson
Adult T-cell leukemia (ATL) is a fatal malignancy of CD4+ T-cells infected with human T-cell leukemia virus type I (HTLV-1). ATL cells often exhibit random gross chromosomal rearrangements that are associated with the induction and improper repair of double-stranded DNA breaks (DSBs). The viral oncoprotein Tax has been reported to impair DSB repair, but is not shown to be consistently expressed throughout all phases of infection. The viral oncoprotein HTLV-1 basic leucine zipper factor (HBZ) is consistently expressed prior to and throughout disease progression, but it is unclear whether it also influences DSB repair...
May 16, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29765150/phase-i-studies-of-azd1208-a-proviral-integration-moloney-virus-kinase-inhibitor-in-solid-and-haematological-cancers
#16
Jorge Cortes, Kenji Tamura, Daniel J DeAngelo, Johann de Bono, David Lorente, Mark Minden, Geoffrey L Uy, Hagop Kantarjian, Lisa S Chen, Varsha Gandhi, Robert Godin, Karen Keating, Kristen McEachern, Karthick Vishwanathan, Janet Elizabeth Pease, Emma Dean
BACKGROUND: Proviral integration Moloney virus (PIM) kinases (PIM1, 2 and 3) are overexpressed in several tumour types and contribute to oncogenesis. AZD1208 is a potent ATP-competitive PIM kinase inhibitor investigated in patients with recurrent or refractory acute myeloid leukaemia (AML) or advanced solid tumours. METHODS: Two dose-escalation studies were performed to evaluate the safety and tolerability, and to define the maximum tolerated dose (MTD), of AZD1208 in AML and solid tumours...
May 16, 2018: British Journal of Cancer
https://www.readbyqxmd.com/read/29765142/targeted-deep-sequencing-of-gastric-marginal-zone-lymphoma-identified-alterations-of-traf3-and-tnfaip3-that-were-mutually-exclusive-for-malt1-rearrangement
#17
Jiyeon Hyeon, Boram Lee, So-Hyun Shin, Hae Yong Yoo, Seok Jin Kim, Won Seog Kim, Woong-Yang Park, Young-Hyeh Ko
Gastric extranodal marginal zone lymphoma of mucosa-associated lymphoid tissue is a distinct entity in that Helicobacter pylori infection plays the most important causative role in the development of the disease. To investigate the genomic alteration in gastric marginal zone lymphoma that was resistant to the H. pylori eradication therapy, we analyzed 19 cases of the gastric marginal zone lymphoma using fluorescence in situ hybridization for MALT1, BCL10 rearrangement, and targeted sequencing using an Illumina platform...
May 15, 2018: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29763719/small-cell-carcinoma-of-the-urinary-bladder-a-clinicopathologic-and-immunohistochemical-analysis-of-81-cases
#18
Gang Wang, Li Xiao, Miao Zhang, Ashish M Kamat, Arlene Siefker-Radtke, Colin P Dinney, Bogdan Czerniak, Charles C Guo
Small cell carcinoma (SmCC) of the bladder is a rare disease. We retrospectively studied a large series of bladder SmCC from a single institution. The patients included 69 men and 12 women with a mean age of 68years. Most bladder SmCC were presented at advanced stage with tumors invading the muscularis propria and beyond (n=77). SmCC was pure in 27 cases and mixed with other histologic types in 54 cases, including urothelial carcinoma (UC) (n=32), UC in situ (n=26), glandular (n=14), micropapillary (n=4), sarcomatoid (n=4), and squamous (n=3), and plasmacytoid (n=1) features...
May 12, 2018: Human Pathology
https://www.readbyqxmd.com/read/29758205/performance-of-p16-ki67-dual-staining-in-triaging-hr-hpv-positive-population-during-cervical-cancer-screening-in-the-younger-women
#19
Qiu-Ping Qian, Xiaoan Zhang, Bo Ding, Shi-Wen Jiang, Ze-Min Li, Mu-Lan Ren, Yang Shen
BACKGROUND: Cervical cancer is the most common malignancy from the female reproductive tract, and usually develops from low-grade or high-grade squamous intraepithelial lesions (LSIL or HSIL). Detecting the precancerous lesion during the LSIL-HSIL-invasive cancer sequelae can effectively interrupt the oncogenesis and decrease the incidence of invasive carcinoma. The aim of this study is to evaluate the performance of P16/Ki67 dual staining in triaging hr-HPV-positive population. METHODS: Conventional gynecological examination, cervical cytology and hr-HPV testing were given to all patients...
May 11, 2018: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/29756121/critically-dysregulated-signaling-pathways-and-clinical-utility-of-the-pathway-biomarkers-in-lymphoid-malignancies
#20
REVIEW
Rui-Fang Sun, Qian-Qian Yu, Ken H Young
Accumulating evidence confirmed that many dysregulated signaling pathways and aberrant genetic alterations contribute to the oncogenesis and heterogeneity of lymphoid malignancies. Therapeutically targeting dysregulating signaling pathways and their hidden oncogenic biomarkers are becoming available, but did not show desired therapeutic effect in current clinical practice. It is meaningful to further understand the underlying mechanisms of the dysregulated signaling pathways and to address the potential utility of pathway-related biomarkers...
March 2018: Chronic Diseases and Translational Medicine
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