Abstract:
:We designed to investigate the effects of down-regulating the tumor susceptibility gene 101 (TSG101) on the proliferation and apoptosis of the human breast cancer MCF-7 cell line, and the role of the MAPK/ERK signal pathway in this process. The siRNA against TSG101 was transfected into the breast cancer MCF-7 cell line using Lipofectamine 2000. After TSG101 knockdown, the proliferation of MCF-7 cells was measured by the MTT assay. The cell cycle distribution and apoptosis were examined by using flow cytometry while cell migration was measured using a transwell assay. The protein level of p-ERK was further assessed by immunofluorescence and western blotting. Our results are as following, the MCF-7 cells transfected with TSG101 siRNA proliferated significantly slower and exhibited significantly increased rates of apoptosis compared to the control cells. In the TSG101 siRNA transfected cells, the percentage of cells in the G₀/G₁ and S phase of the cell cycle was significantly higher and lower, respectively, compared to the control cells. Moreover, the migration ability of TSG101 siRNA transfected cells was lower than the control groups. Lastly, the level of p-ERK protein in TSG101 siRNA transfected cells was significantly decreased compared with the control cells. In conclusion, TSG101 knockdown in breast cancer cells induces apoptosis and inhibits proliferation. The TSG101 depleted cells are arrested at the G₁/S transition of the cell cycle. The migration of breast cancer cells is also impaired by TSG101 siRNA. TSG101 may play a biological role through modulation of the MAPK/ERK signaling pathway in breast cancer.
journal_name
Histol Histopatholjournal_title
Histology and histopathologyauthors
Zhang Y,Song M,Cui ZS,Li CY,Xue XX,Yu M,Lu Y,Zhang SY,Wang EH,Wen YYdoi
10.14670/HH-26.87subject
Has Abstractpub_date
2011-01-01 00:00:00pages
87-94issue
1eissn
0213-3911issn
1699-5848journal_volume
26pub_type
杂志文章abstract::We examined morphological characteristics of the carotid body of spontaneously hypertensive rats (SHR), those of age-matched normotensive Wistar rats (NWR), and age-matched genetically comparable Wistar Kyoto rats (WKY). We examined the distribution and abundance of four different regulatory neuropeptides: substance P...
journal_title:Histology and histopathology
pub_type: 杂志文章
doi:10.14670/HH-26.369
更新日期:2011-03-01 00:00:00
abstract::In the cutaneous nerves, unmyelinated nerve fibers outnumber the myelinated ones but are scarcely analyzed, especially at autopsy. This indifference toward the pathology of unmyelinated nerve fibers may be due to the necessity of electron microscopic analyses and, more importantly, the obscurity of pathological altera...
journal_title:Histology and histopathology
pub_type: 杂志文章,评审
doi:10.14670/HH-15.313
更新日期:2000-01-01 00:00:00
abstract::The three-dimensional structure of the pancreatic ductular system (from the intercalated duct to the intercellular secretory canaliculus) is controversial and unclear. The aim of this study is to reveal the three-dimensional structure of the pancreatic ductular sysytem at the onset of pancreatitis. One day following r...
journal_title:Histology and histopathology
pub_type: 杂志文章
doi:10.14670/HH-17.107
更新日期:2002-01-01 00:00:00
abstract::Recent studies have shown that papillary renal cell carcinoma (RCC) is clinically and genotypically a distinct entity. Papillary RCCs account for about 10-15% of renal parenchymal neoplasms. Macroscopically, the cut surface is yellow or brown in color and large tumors frequently show cystic change. Hemorrhage and necr...
journal_title:Histology and histopathology
pub_type: 杂志文章,评审
doi:10.14670/HH-18.487
更新日期:2003-04-01 00:00:00
abstract::Recent data challenge the relevance of the RB pathway to cancer based on RB inactivation, at least in breast tumors. To obtain information on the actual role of the components of the RB pathway in tumor progression we decided to investigate whether their quantitative changes were associated with variations in the leve...
journal_title:Histology and histopathology
pub_type: 杂志文章
doi:10.14670/HH-22.769
更新日期:2007-07-01 00:00:00
abstract::Recent evidence has shown that vascular function depends not only on cells within the vessels, but is also significantly modulated by circulating cells derived from the bone marrow. A number of studies indicate that an early reendothelialization by circulating endothelial precursors after vascular injury prevents exce...
journal_title:Histology and histopathology
pub_type: 杂志文章,评审
doi:10.14670/HH-22.547
更新日期:2007-05-01 00:00:00
abstract::Much effort has been made by researchers to elucidate the complex biology of breast cancer stem cells (BCSCs), a small subset of breast tumor cells that display stem cell properties, drive tumor initiation, and growth. In recent years, it has been suggested that BCSCs could be responsible for the process of metastasis...
journal_title:Histology and histopathology
pub_type: 杂志文章,评审
doi:10.14670/HH-11-718
更新日期:2016-06-01 00:00:00
abstract::PML is a tumour suppressor inactivated in Acute Promyelocytic Leukaemia (APL). PML is the essential component of a subnuclear structure called the PML nuclear body (PML-NB), which is disrupted in APL. By targeting different cellular proteins to this structure, PML can either hamper or potentiate their functions. The P...
journal_title:Histology and histopathology
pub_type: 杂志文章,评审
doi:10.14670/HH-22.937
更新日期:2007-08-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章
doi:10.14670/HH-13.727
更新日期:1998-07-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章
doi:10.14670/HH-21.503
更新日期:2006-05-01 00:00:00
abstract::Human epithelium contains keratin, which is expressed during differentiation. Depending on the target cell type, different types of keratin are expressed, and their alterations seem to represent changes in cell properties. The basal cells of oral epithelium express keratin 5 (K5), K14, K15 and K19, but their alteratio...
journal_title:Histology and histopathology
pub_type: 杂志文章
doi:10.14670/HH-27.949
更新日期:2012-07-01 00:00:00
abstract::Dysadherin, a cancer associated cell membrane glycoprotein, has been reported to downregulate E-cadherin. Aberrant expression of E-cadherin has been associated with the development of metastases in patients with cancer. Even though the expression of dysadherin and E-cadherin has been studied in primary non-small cell ...
journal_title:Histology and histopathology
pub_type: 杂志文章
doi:10.14670/HH-25.1257
更新日期:2010-10-01 00:00:00
abstract::The purpose of this investigation was to clarify the mechanisms of amyloid fibril formation in human lymph nodes. In our present study, amyloid deposition was observed diffusely in all compartments of the lymph nodes. The deposition form showed extremely characteristic findings in its morphological features. Namely, a...
journal_title:Histology and histopathology
pub_type: 杂志文章
doi:
更新日期:1986-07-01 00:00:00
abstract::Tumorigenesis correlates with hypermethylation of tumor suppressors and hypomethylation of oncogenes. DNA methyltransferases (DNMTs) catalyze DNA methylation, and mutations and aberrant expression in DNMT genes are found in multiple human tumors. The discovery of the DNA demethylation function of TET proteins has open...
journal_title:Histology and histopathology
pub_type: 杂志文章,评审
doi:10.14670/HH-29.991
更新日期:2014-08-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章
doi:10.14670/HH-28.277
更新日期:2013-02-01 00:00:00
abstract::Cyclosporin A is an immunosuppressive drug, which disrupts the activation of peripheral T-lymphocyte pool and blocks the maturation of thymocytes within the thymus. Normally, thymic nonlymphoid cells provide the optimal inductive microenvironment for development of T-lymphocytes. After application of cyclosporin A the...
journal_title:Histology and histopathology
pub_type: 杂志文章,评审
doi:10.14670/HH-13.1183
更新日期:1998-10-01 00:00:00
abstract::To date, no detailed knowledge from animal experiments is available on the kind and extent of osseous and mineral metabolic disorders in genetically determined, insulin-dependent Type I diabetes. The purpose of this study was to examine the influence of the diabetic metabolic state in spontaneously diabetic BB/O(ttawa...
journal_title:Histology and histopathology
pub_type: 杂志文章
doi:10.14670/HH-18.111
更新日期:2003-01-01 00:00:00
abstract::A method for the in vitro generation of granulomas and its use in the analysis of the human granulomatous response is summarized. As a target for the cellular response L3 larvae of Nippostrongylus brasiliensis are coincubated with human mononuclear blood cells, and within seven to fourteen days the development of bloo...
journal_title:Histology and histopathology
pub_type: 杂志文章,评审
doi:10.14670/HH-16.645
更新日期:2001-04-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章
doi:10.14670/HH-28.1351
更新日期:2013-10-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章
doi:10.14670/HH-11-776
更新日期:2016-12-01 00:00:00
abstract::Macrophages play important roles in host defense mechanisms. In the brain, besides microglial cells, meningeal macrophages are present. However, the pathobiological characteristics of meningeal macrophages in rats remain to be investigated. In normal meninx, immunohistochemically, macrophages reacting to CD163 (macrop...
journal_title:Histology and histopathology
pub_type: 杂志文章
doi:10.14670/HH-24.13
更新日期:2009-01-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章
doi:
更新日期:1995-10-01 00:00:00
abstract:INTRODUCTION:It is difficult to prevent and treat intra- and peri-neural fibrosis after peripheral nerve surgery. Many authors have attempted to develop and verify the effectiveness of substances to decrease the formation of adherences in different tissues. MATERIAL AND METHODS:this study aimed to assess the effective...
journal_title:Histology and histopathology
pub_type: 杂志文章
doi:10.14670/HH-25.741
更新日期:2010-06-01 00:00:00
abstract:BACKGROUND:The Shwachman-Bodian-Diamond syndrome (SBDS) protein is a member of a highly conserved family which influences RNA activation and is associated with pancreatic, skeletal and bone marrow deficiencies, as well as hematological malignancies. METHODS:In this study, the expression and localization of SBDS were i...
journal_title:Histology and histopathology
pub_type: 杂志文章
doi:10.14670/HH-23.819
更新日期:2008-07-01 00:00:00
abstract::Glucose uptake and metabolism are essential for proliferation and survival of cells, and are supposed to be enhanced in actively proliferating cell systems such as embryonic and cancer tissues. Glucose uptake is usually carried out through glucose transporters. In the developing fetal lung, metabolism of glucose is th...
journal_title:Histology and histopathology
pub_type: 杂志文章,评审
doi:10.14670/HH-14.895
更新日期:1999-07-01 00:00:00
abstract::In recent years, the different mechanisms of epithelial cell loss which occur in mammalian and avian small intestine have been re-investigated. Information is now available for a variety of mammalian types and mechanisms can be divided into two major classes: [i] those preserving epithelial integrity by maintaining in...
journal_title:Histology and histopathology
pub_type: 杂志文章,评审
doi:10.14670/HH-14.257
更新日期:1999-01-01 00:00:00
abstract::In the present study, morphological changes of the exocrine pancreas in rats after pancreatic duct ligation were examined with light microscopy (hematoxylin-eosin, TUNEL, and PCNA staining) and scanning electron microscopy in order to elucidate the effects of increased pancreatic duct pressure. On the fifth day after ...
journal_title:Histology and histopathology
pub_type: 杂志文章
doi:10.14670/HH-17.1033
更新日期:2002-10-01 00:00:00
abstract::Renal oncocytosis is a recently established disease entity characterized by numerous oncocytic tumors and diffuse involvement of oncocytic changes in renal parenchymal epithelia. In this article, we review this disease with a focus on its clinical and pathobiological aspects. Clinically, renal oncocytosis may occur in...
journal_title:Histology and histopathology
pub_type: 杂志文章,评审
doi:10.14670/HH-27.1407
更新日期:2012-11-01 00:00:00
abstract::The photoreceptors of the barred owl (Strix varia) consist of rods, single cones and unequal double cones present in a ratio of about 35:1:3. In the light-adapted condition the rods are of uniform diameter along their entire length and are therefore not felt to undergo photomechanical changes. The rod outer segment co...
journal_title:Histology and histopathology
pub_type: 杂志文章
doi:
更新日期:1996-01-01 00:00:00
abstract::We report a case of subcutaneous fat necrosis of a newborn child which appeared 9 days after birth and was cured without any complications. We propose the reclassification of the etiological factors accompanying this lesion by classifying them in a plurietiological syndrome with some basic or essential factors and oth...
journal_title:Histology and histopathology
pub_type: 杂志文章
doi:
更新日期:1990-01-01 00:00:00