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Results 401 - 450 of 3246
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Song Yang - - 2012
Caveolin-1 (CAV-1), one component of caveolae, involves in multiple cellular processes and signal transductions. We previously showed that the expression of CAV-1 gene in NCI-H446 cells inhibited cell proliferation and promoted cell metastasis. Here we explore the function of CAV-1 on tumor growth and metastasis by using NCI-H460 in vitro. ...
Drzewiecka Hanna - - 2012
It has recently been suggested that, in addition to genetic and environmental factors and tobacco exposure, estrogens also may be an independent risk factor in the development of lung cancer. Therefore, we evaluated the transcript and protein levels of 17-beta-hydroxysteroid-dehydrogenase type 1 (HSD17B1), and the conversion of estrone (E1) to ...
Dang Li - - 2012
Abstract Purpose: Low temperature (hypothermia) during irradiation of cells has been reported to have a radioprotective effect. The mechanisms are not fully understood. This study further investigates the possible mechanisms behind hypothermia-mediated radioprotection. Materials and methods: Human lymphoblastoid TK6 cells were incubated for 20 min at 0.8 or 37 °C ...
Zhang Yiru - - 2012
To ensure genome stability, DNA must be replicated once and only once during each cell cycle. Cdt1 is tightly regulated to make sure that cells do not rereplicate their DNA. Multiple regulatory mechanisms operate to ensure degradation of Cdt1 in S phase. However, little is known about the positive regulators ...
Lee Chung Soo - - 2012
Natural phenol licorice compounds have been shown to induce apoptosis in cancer cells. 3-(5'-Hydroxymethyl-2'-furyl)-1-benzyl indazole (YC-1) may enhance the sensitivity of cancer cells to anticancer drugs. However, the combined effect of licochalcone A and YC-1 on cell death in ovarian cancer cells has not been studied. We assessed the combined ...
Yang Xuefeng - - 2012
Zbtb7, a member of the POK protein family, is involved in tumorigenesis and cellular differentiation by acting as a crucial transcription factor, but its role in cell cycle modulation remains uncharacterized. In the present study, CDK2 and E2F4, two cell cycle regulators, are shown to be downregulated at the mRNA ...
Schulz Rüdiger W - - 2012
Survival and development of male germ cells depends on their close contact with Sertoli cells. In the cystic spermatogenesis found in fish, one germ cell clone, initially a single undifferentiated spermatogonium type A, is enclosed by and accompanied through spermatogenesis by a group of Sertoli cells. Previous work showed that ...
Devès Mathilde - - 2012
Metazoans begin their life as a single cell. Then, this cell enters a more or less protracted period of active cell proliferation, which can be considered as the default cellular state. A crucial event, the developmental cell cycle exit, occurs thereafter. This phenomenon allows for differentiation to happen and regulates ...
Ishikawa Chie - - 2012
BACKGROUND: Honokiol, a naturally occurring biphenyl, possesses anti-neoplastic properties. We investigated activities of honokiol against adult T-cell leukemia (ATL) associated with human T-cell leukemia virus type 1 (HTLV-1). METHODS: Cell viability was assessed using colorimetric assay. Propidium iodide staining was performed to determine cell cycle phase. Apoptotic effects were evaluated ...
Sterlacci William - - 2012
Non-small-cell lung cancer (NSCLC) is among the most frequently diagnosed malignancy and a leading cause for cancer mortality worldwide. Despite various efforts, practical prognostic and predictive markers are still few. We review recent findings concerning the cell cycle in NSCLC and discuss prognostic and predictive aspects as well as the ...
Ghosh Chiranjit - - 2012
Obesity and its associated metabolic disorders has become a major obstacle in improving the average life span. In this regard therapeutic approach using natural compounds are currently receiving much attention. Herbal compounds rich in triterpenes are well known to regulate glucose and lipid metabolism. Here, we have found that Ulmus ...
Ohta Midori - - 2012
During meiosis, the centrosome/spindle pole body (SPB) must be regulated in a manner distinct from that of mitosis to achieve a specialized cell division that will produce gametes. In this paper, we demonstrate that several SPB components are localized to SPBs in a meiosis-specific manner in the fission yeast Schizosaccharomyces ...
Cheng Linyou - - 2012
BACKGROUND: Sessile marine animals such as sponges, ascidians, and bryozoans are a rich source of bioactive natural products, many of which exhibit potent anticancer activity. Materials and Methods: We extracted and purified a polypeptide with potent antitumor activity from Ciona savignyi by acetone fractionation, ultrafiltration, ion exchange chromatography, gel chromatography, ...
Nakamura Takeshi - - 2012
Proliferation and differentiation of cells in female reproductive organs, the oviduct, uterus and vagina, are regulated by endogenous estrogen. In utero exposure to a synthetic estrogen, diethylstilbestrol (DES), induces vaginal clear-cell adenocarcinoma in humans. In mice, perinatal exposure to DES results in abnormalities such as polyovular follicles, uterine circular muscle ...
Sundarraj Shenbagamoorthy - - 2012
Ethnopharmacological relevance: Acacia nilotica is widely distributed in Asia. In India, it occupies an important place in the indigenous system of medicine against anti-inflammatory, antioxidant, cancers, and/or tumors. AIM OF THE STUDY: The purpose of this study is to investigate the inhibitory effect of Acacia nilotica leaves extract and γ-Sitosterol ...
Li Yuhua - - 2012
Dietary components play an important role in cancer prevention. Many ingredients from apples have been proven to have antitumor potency. We thus made low molecular weight apple polysaccharides (LMWAP) and evaluated the effects of it on colorectal cancer (CRC). The effects of LMWAP on human colon carcinoma cells (HT-29) were ...
Bufalieri F - - 2012
Abstract Purpose: Our goal was to identify genes showing a general transcriptional response to irradiation in mammalian cells and to analyze their response in function of dose, time and quality of irradiation and of cell type. Materials and methods: We used a modified MIAME (Minimal Information About Microarray Experiments) protocol ...
Nozu Ryo - - 2012
The three-spot wrasse (Halichoeres trimaculatus), which inhabits the coral reefs of Okinawa, changes sex from female to male. Sex change in this species is controlled by a social system. Oocytes disappear completely from the ovary, and male germ cells and somatic cells comprising testicular tissue arise a new during the ...
Sá R - - 2012
For patients with threatened fertility, preservation of it is a major concern. Although promising results have been obtained in animal models using testicular germ cell suspensions, in humans, it is crucial to first develop an efficient method of cryopreservation to be able to apply to transplantation. Thus, four reliable and ...
Iwakiri Yasuko - - 2012
Comment on: Cirera-Salinas D, et al. Cell Cycle 2012; 11:922-33.
Zhang Shi-Meng - - 2012
HIV-1 Tat triggers intrinsic and extrinsic apoptosis pathways in both infected and uninfected cells and plays an important role in the pathogenesis of AIDS. Knocking down Tip60, an interactive protein of Tat, leads to the impairment of cell cycle progression, indicating a key role of Tip60 in cell cycle control. ...
Serrano Manuel - - 2012
Comment on: Vazquez-Martin A, et al. Cell Cycle 2012; 11:922-33.
Zhang M M Department of General Surgery, The First Affiliated Hospital, Chongqing Medical University, - - 2012
REGγ is a proteasome activator that facilitates the degradation of small peptides. Abnormally high expression of REGγ has been observed in thyroid carcinomas. The purpose of the present study was to explore the role of REGγ in poorly differentiated thyroid carcinoma (PDTC). For this purpose, small interfering RNA (siRNA) was ...
So Kam-Hei - - 2012
Glycodelin contains four isoforms with diverse biological functions. Glycodelin-A is potentially a diagnostic marker for cancer patients and receptivity marker of the secretory endometrium. Yet, direct evidence for the role of glycodelin in the regulation of endometrial epithelial cell migration, invasion and attachment of trophoblastic spheroids (blastocyst surrogate) is lacking. ...
Kosodo Yoichi - - 2012
Interkinetic nuclear migration (INM) is an oscillatory nuclear movement that is synchronized with the progression of the cell cycle. The efforts of several researchers, following the first report of INM in 1935, have revealed many of the molecular mechanisms of this fascinating phenomenon linking the timing of the cell cycle ...
Gusain Anchal - - 2012
Tricyclodecan-9-yl-xanthogenate (D609) inhibits phosphatidylcholine (PC)-phospholipase C (PLC) and/or sphingomyelin (SM) synthase (SMS). Inhibiting SMS can increase ceramide levels, which can inhibit cell proliferation. Here, we examined how individual inflammatory and glia cell proliferation is altered by D609. Treatment with 100-μM D609 significantly attenuated the proliferation of RAW 264.7 macrophages, N9 ...
Azzam Ghows G MRC Functional Genomics Unit, Department of Physiology, Anatomy and Genetics, South Parks Road, University of Oxford, Oxford, - - 2012
Argonaute 1 (Ago1) is a member of the Argonaute/PIWI protein family involved in small RNA-mediated gene regulation. In Drosophila, Ago1 plays a specific role in microRNA (miRNA) biogenesis and function. Previous studies have demonstrated that Ago1 regulates the fate of germline stem cells. However, the function of Ago1 in other ...
Sobol Zhanna - - 2012
The Organization for Economic Co-operation and Development (OECD) has recently adopted Test Guideline 487 (TG487) for conducting the in vitro micronucleus (MNvit) assay. The purpose of this study is to evaluate and validate treatment conditions for the use of p53 competent TK6 human lymphoblastoid cells in a TG487 compliant MNvit ...
Magnussen Gry Irene - - 2012
The novel synthetic retinoid, CD437, shows potent anti-tumor activity in a range of different cancer cell lines and now serves as a prototype for development of new retinoid related molecules (RRMs). The purpose of this study was to examine the effect and cellular targets of CD437 in the human metastatic ...
Sela Yogev - - 2012
While experimentally induced arrest of human embryonic stem cells (hESCs) in G1 has been shown to stimulate differentiation, it remains unclear whether the unperturbed G1 phase in hESCs is causally related to differentiation. Here we employ centrifugal elutriation to isolate and investigate differentiation propensities of hESCs in different phases of ...
Savatier Julien - - 2012
We investigate the relative importance of the different mechanisms of Adriamycin, an anthracycline, and their interrelations, in particular the link between cell cycle arrest, cell death, and generation of reactive oxygen species (ROS) that is suspected to be the origin of cardiotoxic side-effects. We introduced a lifetime fluorescence based technology ...
Adar Makovski - - 2012
Fer is an intracellular tyrosine kinase which resides in both the cytoplasm and nucleus of mammalian cells. This kinase was also found in all malignant cell-lines analyzed and was shown to support cell-cycle progression in cancer cells. Herein we show that knock-down of Fer, both, impairs cell-cycle progression and imposes ...
Hsu Chih-Ping - - 2012
One newly bred variety of tea cultivar, purple-shoot tea, was selected to evaluate its antiproliferative effects on colorectal carcinoma cells, as well as normal colon cells. The phytochemicals and identified catechins of purple-shoot tea extract (PTE) were significantly higher than that of ordinary tea, especially the anthocyanins (surpassed by 135 ...
Cárdenas Horacio - - 2012
Determination of the specific roles of the estrogen receptor (ER) forms in reproductive processes of different species remains incomplete. In the present experiment, cellular localization and changes in relative amounts of the ERα and ERβ in late developing ovarian follicles, oviduct, and uterus were determined during the follicular phase of ...
Fokialakis Nikolas - - 2012
Biochanin A (BCA), a major isoflavone in red clover and many other legumes, has been reported to display estrogenic as well as cancer chemopreventive properties. Ingested BCA is known to display low bioavailability due to poor solubility, extensive metabolism and rapid clearance. Esters of bioactive isoflavones are known to increase ...
Selcer K W - - 2012
Regulation of bone density is partly dependent upon steroid hormones, with estrogens playing an important role. Inactive conjugated estrogens may serve as precursors to active estrogens, especially in post-menopausal women, via steroid sulfatase, which converts conjugated estrogens into unconjugated estrogens. The purpose of this study was to characterize steroid sulfatase ...
Laverrière M - - 2012
Metacaspases are distant relatives of animal caspases present in plants, fungi and protozoa. At variance with caspases, metacaspases exhibit stringent specificity for basic amino-acid residues and are absolutely dependent on millimolar concentrations of calcium. In the protozoan parasite Trypanosoma cruzi, metacaspases have been suggested to be involved in an apoptosis-like ...
Hessler Robert R - - 2012
Mystacocarids are dioecious. Their gonopores are on the medial side of the third thoracic limb. The male's paired testes lie in the thorax and abdomen. They develop from paired rows of six small follicles dorsally. In the mature animal they fill most of the abdomen. The spermatophores develop within the ...
Rádis-Baptista Gandhi - - 2012
Nucleolar targeting peptides (NrTPs) are 14-15 residue-long sequences designed by structural minimization of a snake toxin (J. Med. Chem. 2008, 50, 7041-7044). NrTPs such as NrTP1 (YKQCHKKGGKKGSG) and analogues are capable of penetrating human cervix epithelial carcinoma (HeLa) cells and homing into their nucleoli. We now show that NrTP1 similarly ...
Niedojadło Katarzyna - - 2012
The nucleolar activity of Hyacinthus orientalis L. embryo sac cells was investigated. The distributions of nascent pre-rRNA (ITS1), 26S rRNA and of the 5S rRNA and U3 snoRNA were determined using fluorescence in situ hybridization (FISH). Our results indicated the different rRNA metabolism of the H. orientalis female gametophyte cells ...
Lei Wei - - 2012
Embryo implantation into the maternal uterus is a crucial step for the successful establishment of mammalian pregnancy. Following the attachment of embryo to the uterine luminal epithelium, uterine stromal cells undergo steroid hormone-dependent decidualization, which is characterized by stromal cell proliferation and differentiation. The mechanisms underlying steroid hormone-induced stromal cell ...
Komada Munekazu - - 2012
Bisphenol A (BPA), an endocrine-disruptor, is widely used in the production of plastics and resins. Human perinatal exposure to this chemical has been proposed to be a potential risk to public health. Animal studies indicate that postnatal exposure to BPA may affect neocortex development in embryos by accelerated neurogenesis and ...
Tucker Matthew R - - 2012
Female gamete development in Arabidopsis ovules comprises two phases. During megasporogenesis, a somatic ovule cell differentiates into a megaspore mother cell and undergoes meiosis to produce four haploid megaspores, three of which degrade. The surviving functional megaspore participates in megagametogenesis, undergoing syncytial mitosis and cellular differentiation to produce a multicellular ...
Liu Kuiran - - 2012
The human DEK proto-oncogene has been found to play an important role in autoimmune disease, viral infection and human carcinogenesis. Although it is transcriptionally upregulated in cervical cancer, the mechanism of intracellular function and regulation is still unexplored. In this study, a plasmid-based siRNA targeting DEK was constructed and transfected ...
Martínez A - - 2012
Nanoparticles based on disulfide bond reduced bovine serum albumin and thiolated alginate (alginate-cysteine conjugate) have been prepared by coacervation method and have been loaded with tamoxifen (TMX). The TMX load into the nanoparticles was optimized (4-6 μg/mg NP) by freeze-drying the systems before the loading procedure. Maximum TMX release (45-52%) ...
Lemaire Miguel - - 2012
PURPOSE: We have previously demonstrated the use of the IGF-1RTK inhibitor picropodophyllin (PPP) as an attractive strategy to combat multiple myeloma (MM) in vitro and in vivo. After a combinatorial drug screening the HDAC inhibitor LBH589 was shown to act in synergy with PPP reducing survival of MM cells. In ...
May Sophie F SF Wellcome Trust Centre for Molecular Parasitology, Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8TA, - - 2012
AIR9 is a cytoskeleton-associated protein in Arabidopsis thaliana with roles in cytokinesis and cross wall maturation, and reported homologues in land plants and excavate protists, including trypanosomatids. We show that the Trypanosoma brucei AIR9-like protein, TbAIR9, is also cytoskeleton-associated and colocalizes with the subpellicular microtubules. We find it to be ...
Qi Min - - 2012
Pseudolaric acid B (PAB) is the primary biologically active compound isolated from the root bark of P. kaempferi Gordon. Previous studies have demonstrated that PAB arrests cells in G2/M phase in several cancer cell lines without significantly perturbing the G2/M transition-associated proteins. CylinB1, a marker for mitotic phase arrest, was ...
Chaopotong Pattama - - 2012
BackgroundAlthough the anticancer effects of radiation therapy for patients with uterine cervical squamous cell carcinoma (U-SCC) are widely acknowledged, little is known about the resultant morphological alterations in tumour tissue kinetics.AimsTo make a detailed assessment of possible roles of survivin expression in apoptosis and cell proliferation in U-SCC during radiation ...
Lee Jae-Woong - - 2012
The cell-fate determination factor Dachshund, a component of the Retinal Determination Gene Network (RDGN), has a role in breast tumor proliferation through the repression of cyclin D1 and several key regulators of embryonic stem cell function, such as Nanog and Sox2. However, little is known about the role of DACH1 ...
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