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Cell cycle review

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https://www.readbyqxmd.com/read/28812991/the-retinoblastoma-rb-tumor-suppressor-pushing-back-against-genome-instability-on-multiple-fronts
#1
REVIEW
Renier Vélez-Cruz, David G Johnson
The retinoblastoma (RB) tumor suppressor is known as a master regulator of the cell cycle. RB is mutated or functionally inactivated in the majority of human cancers. This transcriptional regulator exerts its function in cell cycle control through its interaction with the E2F family of transcription factors and with chromatin remodelers and modifiers that contribute to the repression of genes important for cell cycle progression. Over the years, studies have shown that RB participates in multiple processes in addition to cell cycle control...
August 16, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28812395/current-research-on-circular-rnas-associated-with-colorectal-cancer
#2
Penghui Wang, Xiaodong He
Representing a novel type of endogenous noncoding RNAs, circular RNAs (circRNAs) have recently gained much attention for their involvement in multiple biological processes. CircRNAs are ubiquitously expressed in eukaryotic cells and modulate gene expression by acting as sponges of microRNAs (miRNAs) or other proteins, such as RNA-binding proteins (RBPs). Due to their unique structure, circRNAs are more stable than linear RNAs. Expression profiles of circRNAs are associated with clinicopathological characteristics of colorectal cancer patients, such as differentiation, TNM classification and distant metastasis...
August 16, 2017: Scandinavian Journal of Gastroenterology
https://www.readbyqxmd.com/read/28812213/heterogeneity-in-the-beta-cell-population-a-guided-search-into-its-significance-in-pancreas-and-in-implants
#3
REVIEW
Daniel Pipeleers, Ines De Mesmaeker, Thomas Robert, Freya Van Hulle
PURPOSE OF REVIEW: Intercellular differences in function have since long been noticed in the pancreatic beta-cell population. Heterogeneity in cellular glucose responsiveness is considered of physiological and pathological relevance. The present review updates evidence for the physiologic significance of beta-cell heterogeneity in the pancreas. It also briefly discusses what this role would imply for beta-cell implants in diabetes. RECENT FINDINGS: Over the past 3 years, functionally different beta cells have been related to mechanisms that may underlie their heterogeneity in the pancreas, such as the stage in their life cycle and the degree of their clustering to islets with varying vascularization...
August 15, 2017: Current Diabetes Reports
https://www.readbyqxmd.com/read/28811863/long-noncoding-rnas-and-rna-binding-proteins-in-oxidative-stress-cellular-senescence-and-age-related-diseases
#4
REVIEW
Chongtae Kim, Donghee Kang, Eun Kyung Lee, Jae-Seon Lee
Cellular senescence is a complex biological process that leads to irreversible cell-cycle arrest. Various extrinsic and intrinsic insults are associated with the onset of cellular senescence and frequently accompany genomic or epigenomic alterations. Cellular senescence is believed to contribute to tumor suppression, immune response, and tissue repair as well as aging and age-related diseases. Long noncoding RNAs (lncRNAs) are >200 nucleotides long, poorly conserved, and transcribed in a manner similar to that of mRNAs...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28811666/the-essential-kinase-atr-ensuring-faithful-duplication-of-a-challenging-genome
#5
REVIEW
Joshua C Saldivar, David Cortez, Karlene A Cimprich
One way to preserve a rare book is to lock it away from all potential sources of damage. Of course, an inaccessible book is also of little use, and the paper and ink will continue to degrade with age in any case. Like a book, the information stored in our DNA needs to be read, but it is also subject to continuous assault and therefore needs to be protected. In this Review, we examine how the replication stress response that is controlled by the kinase ataxia telangiectasia and Rad3-related (ATR) senses and resolves threats to DNA integrity so that the DNA remains available to read in all of our cells...
August 16, 2017: Nature Reviews. Molecular Cell Biology
https://www.readbyqxmd.com/read/28808498/functional-cellular-and-molecular-remodeling-of-the-heart-under-influence-of-oxidative-cigarette-tobacco-smoke
#6
REVIEW
Abdullah Kaplan, Emna Abidi, Rana Ghali, George W Booz, Firas Kobeissy, Fouad A Zouein
Passive and active chronic cigarette smoking (CS) remains an international epidemic and a key risk factor for cardiovascular disease (CVD) development. CS-induced cardiac damage is divided into two major and interchangeable mechanisms: (1) direct adverse effects on the myocardium causing smoking cardiomyopathy and (2) indirect effects on the myocardium by fueling comorbidities such as atherosclerotic syndromes and hypertension that eventually damage and remodel the heart. To date, our understanding of cardiac remodeling following acute and chronic smoking exposure is not well elucidated...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28805635/mosquito-specific-and-mosquito-borne-viruses-evolution-infection-and-host-defense
#7
REVIEW
Rebecca Halbach, Sandra Junglen, Ronald P van Rij
Recent virus discovery programs have identified an extensive reservoir of viruses in arthropods. It is thought that arthropod viruses, including mosquito-specific viruses, are ancestral to vertebrate-pathogenic arboviruses. Mosquito-specific viruses are restricted in vertebrate cells at multiple levels, including entry, RNA replication, assembly, and by the inability to replicate at high temperatures. Moreover, it is likely that the vertebrate immune system suppresses replication of these viruses. The evolution from single to dual-host tropism may also require changes in the course of infection in the mosquito host...
August 2017: Current Opinion in Insect Science
https://www.readbyqxmd.com/read/28804666/primary-small-cell-carcinoma-of-the-hypopharynx-a-report-of-two-cases-and-review-of-nine-additional-cases
#8
Mitsuhiko Nakahira, Kiyomi Kuba, Satoko Matsumura, Masashi Sugasawa
OBJECTIVE: Two patients with primary small cell carcinoma (SmCC) of the hypopharynx, an extremely rare site for the occurrence of SmCC, are reported and nine additional well-documented cases are reviewed. METHODS: Case report and review of the literature concerning primary SmCC of the hypopharynx. RESULTS: On the final analysis, we reviewed eleven cases of primary SmCC of the hypopharynx. The tumors contained mixed elements of SmCC and squamous cell carcinoma (SCC) in six (55%) of eleven patients...
2017: Case Reports in Otolaryngology
https://www.readbyqxmd.com/read/28803490/parkin-pink1-and-dj1-as-possible-modulators-of-mtor-pathway-in-ganglioglioma
#9
Katarzyna Drapalo, Jaroslaw Jozwiak
Ganglioglioma (GG) is a non-malignant tumor classified as G1 by the WHO. Although we currently know that the neoplasm may result from the hyperactivity of protein kinase B (PKB or Akt) or extracellular-regulated kinase (Erk), which upregulates mammalian target of rapamycin kinase (mTOR) and leads to translation of proteins responsible for cell cycle regulation, there are still many questions to be answered. In the current paper we try to analyze the link between GG formation and activity of three proteins known to play a role in neuroprotection...
August 14, 2017: International Journal of Neuroscience
https://www.readbyqxmd.com/read/28801249/p53-stability-is-regulated-by-diverse-deubiquitinating-enzymes
#10
REVIEW
Seul-Ki Kwon, Madhuri Saindane, Kwang-Hyun Baek
The tumor suppressor protein p53 has a variety of roles in responses to various stress signals. In such responses, p53 activates specific transcriptional targets that control cell cycle arrest, DNA repair, angiogenesis, autophagy, metabolism, migration, aging, senescence, and apoptosis. Since p53 has been identified as the most frequently altered gene in human cancers, regulation and stabilization of its normal functions are important. Stability of p53 is regulated by the ubiquitin-proteasome pathway (UPP)...
August 8, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28799433/cell-cycle-transcription-control-dream-muvb-and-rb-e2f-complexes
#11
Martin Fischer, Gerd A Müller
The precise timing of cell cycle gene expression is critical for the control of cell proliferation; de-regulation of this timing promotes the formation of cancer and leads to defects during differentiation and development. Entry into and progression through S phase requires expression of genes coding for proteins that function in DNA replication. Expression of a distinct set of genes is essential to pass through mitosis and cytokinesis. Expression of these groups of cell cycle-dependent genes is regulated by the RB pocket protein family, the E2F transcription factor family, and MuvB complexes together with B-MYB and FOXM1...
August 11, 2017: Critical Reviews in Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28798073/the-human-papillomavirus-replication-cycle-and-its-links-to-cancer-progression-a-comprehensive-review
#12
REVIEW
Sheila V Graham
HPVs (human papillomaviruses) infect epithelial cells and their replication cycle is intimately linked to epithelial differentiation. There are over 200 different HPV genotypes identified to date and each displays a strict tissue specificity for infection. HPV infection can result in a range of benign lesions, for example verrucas on the feet, common warts on the hands, or genital warts. HPV infects dividing basal epithelial cells where its dsDNA episomal genome enters the nuclei. Upon basal cell division, an infected daughter cell begins the process of keratinocyte differentiation that triggers a tightly orchestrated pattern of viral gene expression to accomplish a productive infection...
September 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28796588/obinutuzumab-or-rituximab-plus-cyclophosphamide-doxorubicin-vincristine-and-prednisone-in-previously-untreated-diffuse-large-b-cell-lymphoma
#13
Umberto Vitolo, Marek Trněný, David Belada, John M Burke, Angelo Michele Carella, Neil Chua, Pau Abrisqueta, Judit Demeter, Ian Flinn, Xiaonan Hong, Won Seog Kim, Antonio Pinto, Yuan-Kai Shi, Yoichi Tatsumi, Mikkel Z Oestergaard, Michael Wenger, Günter Fingerle-Rowson, Olivier Catalani, Tina Nielsen, Maurizio Martelli, Laurie H Sehn
Purpose Rituximab (R) plus CHOP (cyclophosphamide, doxorubicin, vincristine, prednisone) chemotherapy is the standard of care in previously untreated diffuse large B-cell lymphoma (DLBCL). Obinutuzumab (G) is a glycoengineered, type II, anti-CD20 monoclonal antibody. GOYA was a randomized phase III study that compared G-CHOP with R-CHOP in patients with previously untreated advanced-stage DLBCL. Methods Patients (N = 1,418) were randomly assigned to receive eight 21-day cycles of G (n = 706) or R (n = 712), plus six or eight cycles of CHOP...
August 10, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28794999/modulation-of-the-p53-family-network-by-rna-binding-proteins
#14
Chris Lucchesi, Jin Zhang, Xinbin Chen
Since its discovery more than three decades ago, tumor suppressor p53 has been shown to play pivotal roles in both maintaining genomic integrity and tumor suppression. p53 functions as a transcription factor responding to a multitude of cellular stressors, regulating the transcription of many genes involved in cell-cycle arrest, senescence, autophagy, and apoptosis. Extensive work has revealed that p53 is one of the most commonly mutated tumor suppressor genes. The last three decades have demonstrated that p53 activity is controlled through transcriptional regulation and posttranslational modifications...
December 2016: Translational Cancer Research
https://www.readbyqxmd.com/read/28792435/regulation-of-telomere-homeostasis-during-epstein-barr-virus-infection-and-immortalization
#15
REVIEW
Siamak A Kamranvar, Maria G Masucci
The acquisition of unlimited proliferative potential is dependent on the activation of mechanisms for telomere maintenance, which counteracts telomere shortening and the consequent triggering of the DNA damage response, cell cycle arrest, and apoptosis. The capacity of Epstein Barr virus (EBV) to infect B-lymphocytes in vitro and transform the infected cells into autonomously proliferating immortal cell lines underlies the association of this human gamma-herpesvirus with a broad variety of lymphoid and epithelial cell malignancies...
August 9, 2017: Viruses
https://www.readbyqxmd.com/read/28791511/centromere-inheritance-through-the-germline
#16
REVIEW
Arunika Das, Evan M Smoak, Ricardo Linares-Saldana, Michael A Lampson, Ben E Black
The centromere directs chromosome segregation and genetic inheritance but is not itself heritable in a canonical, DNA-based manner. In most species, centromeres are epigenetically defined by the presence of a histone H3 variant centromere protein A (CENP-A), independent of underlying DNA sequence. Therefore, centromere inheritance depends on maintaining the CENP-A nucleosome mark across generations. Experiments in cycling somatic cells have led to a model in which centromere identity is maintained by a cell cycle-coupled CENP-A chromatin assembly pathway...
August 8, 2017: Chromosoma
https://www.readbyqxmd.com/read/28791003/dengue-virus-glycosylation-what-do-we-know
#17
REVIEW
Sally S L Yap, Terry Nguyen-Khuong, Pauline M Rudd, Sylvie Alonso
In many infectious diseases caused by either viruses or bacteria, pathogen glycoproteins play important roles during the infection cycle, ranging from entry to successful intracellular replication and host immune evasion. Dengue is no exception. Dengue virus glycoproteins, envelope protein (E) and non-structural protein 1 (NS1) are two popular sub-unit vaccine candidates. E protein on the virion surface is the major target of neutralizing antibodies. NS1 which is secreted during DENV infection has been shown to induce a variety of host responses through its binding to several host factors...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28782898/macf1-a-novel-potential-target-in-cancer
#18
REVIEW
Zhiping Miao, Arshad Ali, Lifang Hu, Fan Zhao, Chong Yin, Chu Chen, Tuanmin Yang, Airong Qian
Cancer is a polygenic disease characterized by uncontrolled growth of normal body cells, which exhibits deregulation of cell cycle as well as resistance to apoptosis and leads to metastasize into other parts of the body. The spectraplakin protein, microtubule actin cross-linking factor 1 (MACF1) plays an essential function in various cellular processes including cell proliferation, migrations, signaling transduction and embryo development. MACF1 is also involved in processes such as metastatic invasion in which cytoskeleton organization is a critical element that contributes to tumor progression in various human cancers...
August 7, 2017: Cancer Science
https://www.readbyqxmd.com/read/28782251/hcv-plays-with-fire-and-yet-avoids-getting-burned-a-review-for-clinicians-on-processing-bodies-and-stress-granules
#19
Carlos Fernández-Carrillo, Gemma Pérez-Vilaró, Juana Díez, Sofía Pérez-Del-Pulgar
Over the last few years, many reports have defined several types of RNA cell granules composed of proteins and messenger RNA (mRNA) that regulate gene expression on a posttranscriptional level. Processing bodies (P-bodies) and stress granules (SGs) are among the best-known RNA granules, only detectable when they accumulate into very dynamic cytosolic foci. Recently, a tight association has been found between positive-stranded RNA viruses, including hepatitis C virus (HCV), and these granules. The present article offers a comprehensive review on the complex and paradoxical relationship between HCV, P-bodies and SGs from a translational perspective...
August 7, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28780632/hsp90-a-promising-broad-spectrum-antiviral-drug-target
#20
REVIEW
Yiliang Wang, Fujun Jin, Rongze Wang, Feng Li, Yanting Wu, Kaio Kitazato, Yifei Wang
The emergence of antiviral drug-resistant mutants is the most important issue in current antiviral therapy. As obligate parasites, viruses require host factors for efficient replication. An ideal therapeutic target to prevent drug-resistance development is represented by host factors that are crucial for the viral life cycle. Recent studies have indicated that heat shock protein 90 (HSP90) is a crucial host factor that is required by many viruses for multiple phases of their life cycle including viral entry, nuclear import, transcription, and replication...
August 5, 2017: Archives of Virology
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