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Cell cycle review

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https://www.readbyqxmd.com/read/28346239/elevated-expression-of-kin17-in-cervical-cancer-and-its-association-with-cancer-cell-proliferation-and-invasion
#1
Yuzhao Zhang, Hongyi Gao, Xiang Gao, Senlin Huang, Kunhe Wu, Xiaobin Yu, Kaitao Yuan, Tao Zeng
BACKGROUND: Cervical cancer is one of the most common cancers in women worldwide. Emerging evidence suggests that kin17 is a tumor-promoting protein in some types of solid tumors. However, whether kin17 contributes to cervical cancer carcinogenesis remains unknown. METHODS: Kin17 expression in clinical samples from Guangdong Women and Children's Hospital and Health Institute was detected by immunohistochemical staining. A series of functional experiments including 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide assay, 5-bromo-2'-deoxyuridine assay, colony formation, transwell assay, flow cytometry of apoptosis, and cell cycle were performed to explore the roles of kin17 in cervical cancer cells HeLa...
March 24, 2017: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/28344099/mechanisms-of-resistance-to-selective-estrogen-receptor-down-regulator-in-metastatic-breast-cancer
#2
REVIEW
Doudou Huang, Fang Yang, Yucai Wang, Xiaoxiang Guan
Based on the prominent role estrogen receptor (ER) plays in breast cancer, endocrine therapy has been developed to block the ER pathway and has shown great effectiveness. Fulvestrant, the first selective ER down-regulator (SERD), was demonstrated to completely suppress ERα and notably efficient. However, resistance to fulvestrant occurs, either intrinsic or acquired during the treatment. Several potential mechanisms inducing fulvestrant resistance have been proposed, composed of activated ERα-independent compensatory growth factor signaling, stimulated downstream kinases, altered cell cycle mediators etcetera...
March 23, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28342855/regulation-of-reproduction-via-tight-control-of-gonadotropin-hormone-levels
#3
Djurdjica Coss
Mammalian reproduction is controlled by the hypothalamic-pituitary-gonadal axis. GnRH from the hypothalamus regulates synthesis and secretion of gonadotropins, LH and FSH, which then control steroidogenesis and gametogenesis. In females, serum LH and FSH levels exhibit rhythmic changes throughout the menstrual or estrous cycle that are correlated with pulse frequency of GnRH. Lack of gonadotropins leads to infertility or amenorrhea. Dysfunctions in the tightly controlled ratio due to levels slightly outside the normal range occur in a larger number of women and are correlated with polycystic ovaries and premature ovarian failure...
March 22, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28342810/expression-and-putative-role-of-mitochondrial-transport-proteins-in-cancer
#4
REVIEW
Oleksandr Lytovchenko, Edmund R S Kunji
Cancer cells undergo major changes in energy and biosynthetic metabolism. One of them is the Warburg effect, in which pyruvate is used for fermentation rather for oxidative phosphorylation. Another major one is their increased reliance on glutamine, which helps to replenish the pool of Krebs cycle metabolites used for other purposes, such as amino acid or lipid biosynthesis. Mitochondria are central to these alterations, as the biochemical pathways linking these processes run through these organelles. Two membranes, an outer and inner membrane, surround mitochondria, the latter being impermeable to most organic compounds...
March 22, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28340685/research-techniques-made-simple-experimental-methodology-for-single-cell-mass-cytometry
#5
Tiago R Matos, Hongye Liu, Jerome Ritz
Growing recognition of the complexity of interactions within cellular systems has fueled the development of mass cytometry. The precision of time-of-flight mass spectrometry combined with the labeling of specific ligands with mass tags enables detection and quantification of more than 40 markers at a single-cell resolution. The 135 available detection channels allow simultaneous study of additional characteristics of complex biological systems across millions of cells. Cutting-edge mass cytometry by time-of-flight (CyTOF) can profoundly affect our knowledge of cell population heterogeneity and hierarchy, cellular state, multiplexed signaling pathways, proteolysis products, and mRNA transcripts...
April 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28337263/receptor-for-advanced-glycation-end-as-drug-targets-in-diabetes-induced-skin-lesion
#6
Xiang-Fang Chen, Wei Tang, Wei-Dong Lin, Zi-Yu Liu, Xiao-Xiao Lu, Bei Zhang, Fei Ye, Zhi-Min Liu, Jun-Jie Zou, Wan-Qing Liao
The involvement of the receptor for advanced glycation end (RAGE) in different diseases has been reviewed in great detail, previously, but the effects of diabetic drugs on RAGE-induced skin lesion during long course diabetes remains poorly understood. In the present study, we have shown that RAGE was overexpressed in both diabetic rats and human keratinocytes (HaCaT cells). Cell cycle arrest and apoptosis as well as alternations of relative protein levels were also found in diabetic rats and HaCaT cells with overexpression of RAGE that were rectified by metformin (Met) treatment...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28337141/%C3%AE-elemene-mechanistic-studies-on-cancer-cell-interaction-and-its-chemosensitization-effect
#7
REVIEW
Ziyu Jiang, Joe A Jacob, Dinesh S Loganathachetti, Prasannabalaji Nainangu, Baoan Chen
Over the past decade, screening and identifying novel compounds for their biomedical applications has become an upcoming area of research. Identifying the molecular mechanisms of these compounds has become an integral part of anticancer research. β-elemene, a sesquiterpene, is renowned for its anticancer activity against a variety of cell lines. Recent studies on β-elemene have elucidated that it possesses anti-proliferative effect on cancer cells by creating an apoptotic trigger. Interestingly, it also induces protective autophagy in some cancerous cell lines and is less cytotoxic compared to other widely accepted chemotherapeutic agents...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28335643/prospects-and-progress-of-atezolizumab-in-non-small-cell-lung-cancer
#8
Johan Vansteenkiste, Els Wauters, Keunchil Park, Achim Rittmeyer, Alan Sandler, Alexander Spira
Immunotherapy has recently come to the forefront of oncology treatment as a potential means of combating cancer by restoring the body's adaptive cancer-immunity cycle. Atezolizumab is a monoclonal antibody agent that specifically targets programmed death ligand 1 (PD-L1), a key molecule in the cancer-immunity pathway, to block binding to its receptors PD-1 and B7.1. Areas covered: This review covers the role of atezolizumab in the treatment of non-small-cell lung cancer (NSCLC). Several studies have reported promising efficacy in this indication...
March 24, 2017: Expert Opinion on Biological Therapy
https://www.readbyqxmd.com/read/28335524/roles-of-cdk-and-ddk-in-genome-duplication-and-maintenance-meiotic-singularities
#9
REVIEW
Blanca Gómez-Escoda, Pei-Yun Jenny Wu
Cells reproduce using two types of divisions: mitosis, which generates two daughter cells each with the same genomic content as the mother cell, and meiosis, which reduces the number of chromosomes of the parent cell by half and gives rise to four gametes. The mechanisms that promote the proper progression of the mitotic and meiotic cycles are highly conserved and controlled. They require the activities of two types of serine-threonine kinases, the cyclin-dependent kinases (CDKs) and the Dbf4-dependent kinase (DDK)...
March 20, 2017: Genes
https://www.readbyqxmd.com/read/28334384/the-cancer-paradigms-of-mammalian-regeneration-can-mammals-regenerate-as-amphibians
#10
Rachel Sarig, Eldad Tzahor
Regeneration in mammals is restricted to distinct tissues and occurs mainly by expansion and maturation of resident stem cells. During regeneration, even subtle mutations in the proliferating cells may cause a detrimental effect by eliciting abnormal differentiation or malignant transformation. Indeed, cancer in mammals has been shown to arise through deregulation of stem cells maturation, which often leads to a differentiation block and cell transformation. In contrast, lower organisms such as amphibians retain a remarkable regenerative capacity in various organs, which occurs via de- and re-differentiation of mature cells...
March 15, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28333356/the-safety-and-efficacy-of-controlled-ovarian-hyperstimulation-for-fertility-preservation-in-women-with-early-breast-cancer-a-systematic-review
#11
Rachael J Rodgers, Geoffrey D Reid, Juliette Koch, Rebecca Deans, William L Ledger, Michael Friedlander, Robert B Gilchrist, Kirsty A Walters, Jason A Abbott
STUDY QUESTION: Can controlled ovarian hyperstimulation (COH) for fertility preservation be effectively conducted in women with breast cancer without worsening their prognosis? SUMMARY ANSWER: COH with co-administration of letrozole suppresses oestradiol levels without significantly impacting oocyte yield or decreasing disease-free survival rates. WHAT IS KNOWN ALREADY: Oestradiol has the capacity to stimulate the proliferation of breast cancer cells...
February 27, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28331449/cyclin-d1-in-the-liver-role-of-noncanonical-signaling-in-liver-steatosis-and-hormone-regulation
#12
Kelley G Núñez, Janet Gonzalez-Rosario, Paul T Thevenot, Ari J Cohen
BACKGROUND: Cyclin D1 is an important protein for cell cycle progression; however, functions independent of the cell cycle have been described in the liver. Cyclin D1 is also involved in DNA repair, is overexpressed in many cancers, and functions as a proto-oncogene. The lesser-known roles of Cyclin D1, specifically in hepatocytes, impact liver steatosis and hormone regulation in the liver. METHODS: A comprehensive search of PubMed was conducted using the keywords Cyclin D1, steatosis, lipogenesis, and liver transplantation...
2017: Ochsner Journal
https://www.readbyqxmd.com/read/28331049/achieving-precision-death-with-cell-cycle-inhibitors-that-target-dna-replication-and-repair
#13
Aimee Bence Lin, Samuel C McNeely, Richard P Beckmann
All cancers are characterized by defects in the systems that ensure strict control of the cell cycle in normal tissues. The consequent excess tissue growth can be countered by drugs that halt cell division and, indeed, the majority of chemotherapeutics developed during the last century work by disrupting processes essential for the cell cycle, particularly DNA synthesis, DNA replication, and chromatid segregation. In certain contexts the efficacy of these classes of drugs can be impressive but, because they indiscriminately block the cell cycle of all actively dividing cells, their side effects severely constrain the dose and duration with which they can be administered, allowing both normal and malignant cells to escape complete growth arrest...
March 22, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28327556/control-of-structure-specific-endonucleases-to-maintain-genome-stability
#14
REVIEW
Pierre-Marie Dehé, Pierre Henri L Gaillard
Structure-specific endonucleases (SSEs) have key roles in DNA replication, recombination and repair, and emerging roles in transcription. These enzymes have specificity for DNA secondary structure rather than for sequence, and therefore their activity must be precisely controlled to ensure genome stability. In this Review, we discuss how SSEs are controlled as part of genome maintenance pathways in eukaryotes, with an emphasis on the elaborate mechanisms that regulate the members of the major SSE families - including the xeroderma pigmentosum group F-complementing protein (XPF) and MMS and UV-sensitive protein 81 (MUS81)-dependent nucleases, and the flap endonuclease 1 (FEN1), XPG and XPG-like endonuclease 1 (GEN1) enzymes - during processes such as DNA adduct repair, Holliday junction processing and replication stress...
March 22, 2017: Nature Reviews. Molecular Cell Biology
https://www.readbyqxmd.com/read/28325261/cdk4-6-inhibitors-in-her2-positive-breast-cancer
#15
REVIEW
Silvia Paola Corona, Andrea Ravelli, Daniele Cretella, Maria Rosa Cappelletti, Laura Zanotti, Martina Dester, Angela Gobbi, Pier Giorgio Petronini, Daniele Generali
Notwithstanding the continuous progress made in cancer treatment in the last 20 years, and the availability of new targeted therapies, metastatic Breast Cancer (BC) is still incurable. Targeting the cell cycle machinery has emerged as an attractive strategy to tackle cancer progression, showing very promising results in the preclinical and clinical settings. The first selective inhibitors of CDK4/6 received breakthrough status and FDA approval in combination with letrozole (February 2015) and fulvestrant (February 2016) as first-line therapy in ER-positive advanced and metastatic BC...
April 2017: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/28322921/linking-deregulation-of-non-coding-rna-to-the-core-pathophysiology-of-alzheimer-s-disease-an-integrative-review
#16
REVIEW
Mark J Millan
The human genome encodes a vast repertoire of protein non-coding RNAs (ncRNA), some specific to the brain. MicroRNAs, which interfere with the translation of target mRNAs, are of particular interest since their deregulation has been implicated in neurodegenerative disorders like Alzheimer's disease (AD). However, it remains challenging to link the complex body of observations on miRNAs and AD into a coherent framework. Using extensive graphical support, this article discusses how a diverse panoply of miRNAs convergently and divergently impact (and are impacted by) core pathophysiological processes underlying AD: neuroinflammation and oxidative stress; aberrant generation of β-amyloid-42 (Aβ42); anomalies in the production, cleavage and post-translational marking of Tau; impaired clearance of Aβ42 and Tau; perturbation of axonal organisation; disruption of synaptic plasticity; endoplasmic reticulum stress and the unfolded protein response; mitochondrial dysfunction; aberrant induction of cell cycle re-entry; and apoptotic loss of neurons...
March 17, 2017: Progress in Neurobiology
https://www.readbyqxmd.com/read/28322600/renal-mitochondrial-response-to-low-temperature-in-non-hibernating-and-hibernating-species
#17
George J Dugbartey, Maarten C Hardenberg, Wendelinde F Kok, Ate Boerema, Hannah V Carey, James Staples, Robert H Henning, Hjalmar Bouma
SIGNIFICANCE: Therapeutic hypothermia is commonly applied to limit ischemic injury in organ transplantation, during cardiac and brain surgery and after cardiopulmonary resuscitation. In these procedures, the kidneys are particularly at risk for ischemia/reperfusion injury (IRI), likely due to their high rate of metabolism. Although hypothermia mitigates ischemic kidney injury, it is not a panacea. Residual mitochondrial failure is thought to be a key event triggering loss of cellular homeostasis, and potentially cell death...
March 21, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28321110/primary-pulmonary-diffuse-large-b-cell-non-hodgkin-s-lymphoma-a-case-report-and-literature-review
#18
Ziqiang Zhu, Wei Liu, Omar Mamlouk, James E O'Donnell, Debabrata Sen, Boris Avezbakiyev
BACKGROUND Primary pulmonary diffuse large B cell lymphoma (DLBCL) is extremely rare neoplasm representing only 0.5-1% of primary pulmonary malignancies. These patients usually have non-specific clinical presentation and radiological findings. Therefore, it is important to increase awareness of this rare disease, as the correct characterization of the tumors will have therapeutic and prognostic implications. CASE REPORT We present the case of a middle-aged Hispanic woman with chronic cough and an abnormal chest X-ray revealing a lung mass, who was found to have primary pulmonary DLBCL...
March 21, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28320295/%C3%AE-crystallins-are-small-heat-shock-proteins-functional-and-structural-properties
#19
REVIEW
T S Tikhomirova, O M Selivanova, O V Galzitskaya
During its life cycle, a cell can be subjected to various external negative effects. Many proteins provide cell protection, including small heat shock proteins (sHsp) that have chaperone-like activity. These proteins have several important functions involving prevention of apoptosis and retention of cytoskeletal integrity; also, sHsp take part in the recovery of enzyme activity. The action mechanism of sHsp is based on the binding of hydrophobic regions exposed to the surface of a molten globule. α-Crystallins presented in chordate cells as two αA- and αB-isoforms are the most studied small heat shock proteins...
February 2017: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/28306665/molecular-mechanisms-that-mediate-invasion-and-egress-of-malaria-parasites-from-red-blood-cells
#20
Aditi Alaganan, Pallavi Singh, Chetan E Chitnis
PURPOSE OF REVIEW: Malaria parasites invade and multiply in diverse host cells during their complex life cycle. Some blood stage parasites transform into male and female gametocytes that are transmitted by female anopheline mosquitoes. The gametocytes are activated in the mosquito midgut to form male and female gametes, which egress from RBCs to mate and form a zygote. Here, we will review our current understanding of the molecular mechanisms that mediate invasion and egress by malaria parasites at different life cycle stages...
March 16, 2017: Current Opinion in Hematology
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