Abstract:
:The epidermal growth factor receptor (EGFR) is a protooncogene that is frequently observed with alterations in late stage gliomas, suggesting an important role of this gene in glial tumorigenesis and progression. In this study we evaluated an antisense EGFR approach as an alternative therapeutic modality for glioblastomas. We transfected U-87MG cells with an antisense EGFR construct and obtained several clones stably expressing lower or undetectable levels of EGFR protein. These clones were found to have impaired proliferation as well as a reduced transforming potential to grow in soft agarose. The number of cells positive for the cell cycle-specific nuclear antigen Ki-67 was also significantly decreased (P < 0.05) in antisense EGFR-transfected clones compared with parental or empty vector-transfected cells. Flow cytometric analysis revealed that the proportion of cells in G0/G1 phases of the cell cycle in the antisense clones increased by up to 31% compared with control cells, whereas the proportion of cells in S phase decreased by up to 58%. In addition, the antisense EGFR-transfected cells showed higher expression of glial fibrillary acidic protein and a more differentiated form, with smaller cell bodies possessing fine tapering cell processes. These results suggest that EGFR plays a major role in modulating cell growth and differentiation in glioblastoma cells. Our experimental model of antisense EGFR provides a basis for future development of antisense EGFR oligodeoxynucleotides in treatment of glioblastomas.
journal_name
Neuropathol Appl Neurobioljournal_title
Neuropathology and applied neurobiologyauthors
Tian XX,Lam PY,Chen J,Pang JC,To SS,Di-Tomaso E,Ng HKdoi
10.1046/j.1365-2990.1998.00128.xsubject
Has Abstractpub_date
1998-10-01 00:00:00pages
389-96issue
5eissn
0305-1846issn
1365-2990journal_volume
24pub_type
杂志文章abstract::The human erythrocyte GLUT-1 is a transmembrane protein which facilitates transport of glucose in the cell in an energy-independent fashion. Neuroectodermal stem cells show strong membrane immunoreactivitry with this marker at early developmental stages in rodents. Membranous expression by undifferentiated neuroectode...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1046/j.1365-2990.2000.00225.x
更新日期:2000-02-01 00:00:00
abstract:AIMS:The secondary dystroglycanopathies represent a heterogeneous group of congenital muscular dystrophies characterized by the defective glycosylation of alpha dystroglycan. These disorders are associated with mutations in at least 17 genes, including Fukutin-related protein (FKRP). At the severe end of the clinical s...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/nan.12376
更新日期:2017-06-01 00:00:00
abstract:AIMS:Apolipoprotein A-I (apoA-I), the principal apolipoprotein associated with high-density lipoproteins in the periphery, is also found at high concentrations in the cerebrospinal fluid. Previous studies have reported either no impact or vascular-specific effects of apoA-I knockout (KO) on β-amyloid (Aβ) pathology. Ho...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/nan.12556
更新日期:2019-12-01 00:00:00
abstract::In a previous study, we described the inhibitory effects of the growth factor-antagonist, trapidil, on spontaneously occurring oligodendrocyte remyelination in the rat spinal cord following lysolecithin-induced demyelination [30]. The objective of the present study was to further investigate the mechanisms of trapidil...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1046/j.1365-2990.1998.00148.x
更新日期:1998-12-01 00:00:00
abstract::In a stereological study of the human substantia nigra (SN), the total number of melanin-positive and melanin-negative neurones from 28 male subjects aged 19-92 years was estimated using a uniform sampling design and optical disectors. There was a significant decrease in the total number of melanin-positive neurones a...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1046/j.1365-2990.2002.00393.x
更新日期:2002-08-01 00:00:00
abstract:AIMS:Amyloid-β (Aβ) oligomers trigger synaptic degeneration that precedes plaque and tangle pathology. However, the signalling molecules that link Aβ oligomers to synaptic pathology remain unclear. Here, we addressed the potential role of RAPGEF2 as a novel signalling molecule in Aβ oligomer-induced synaptic and cognit...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/nan.12686
更新日期:2020-12-20 00:00:00
abstract::Recent studies have described silver- and tau-positive glia and threads in the degenerating lesions of progressive supranuclear palsy. In this study, Gallyas-Braak silver impregnation and several immunohistochemical techniques were employed to examine the distribution of tangles, abnormal glia and threads in the cereb...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/j.1365-2990.1995.tb01066.x
更新日期:1995-08-01 00:00:00
abstract::Monolayer cultures of rat glial cells derived from 12 to 14 day fetal spinal cords and rat C6 glioma cells were examined for immunofluorescent reactivity with human or rabbit autoantibodies to intermediate filaments and with rabbit antibody to GFAP. The embryonic glial cells and C6 glima cells reacted identically with...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/j.1365-2990.1980.tb00213.x
更新日期:1980-07-01 00:00:00
abstract:AIMS:Frontotemporal lobar degeneration (FTLD) is clinically and pathologically heterogeneous. Although associated with variations in MAPT, GRN and C9ORF72, the pathogenesis of these, and of other nongenetic, forms of FTLD, remains unknown. Epigenetic factors such as histone regulation by histone deacetylases (HDAC) may...
journal_title:Neuropathology and applied neurobiology
pub_type: 历史文章,杂志文章
doi:10.1111/nan.12153
更新日期:2015-02-01 00:00:00
abstract::A demyelinating perivascular condition has been observed in the optic nerves of three cats, the lesions of which included the following features: thinly myelinated and demyelinated axons, few normal oligodendrocytes, astroglial scar tissue, lymphocytes, plasma cells, mononuclear phagocytic cells and lipid-laden cells....
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/j.1365-2990.1979.tb00638.x
更新日期:1979-09-01 00:00:00
abstract::Unless treated with effective antiretroviral therapy many AIDS patients develop a characteristic vacuolar myelopathy of the spinal cord associated with moderate clinical disability. Opinion is divided as to whether vacuolar myelopathy is causally linked to HIV myelitis. To investigate this further, spinal cord patholo...
journal_title:Neuropathology and applied neurobiology
pub_type: 临床试验,杂志文章
doi:10.1046/j.1365-2990.1999.00152.x
更新日期:1999-02-01 00:00:00
abstract::Hypoxia-inducible factor (HIF)-1alpha is a transcription factor that promotes ischaemia-driven angiogenesis. The aim of this study was to determine the relation of HIF-1alpha to vascular endothelial growth factor (VEGF; an important angiogenic molecule in brain tumours), p53 expression, angiogenesis, proliferative pot...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/j.1365-2990.2003.00535.x
更新日期:2004-06-01 00:00:00
abstract::Obstructive hydrocephalus was induced in 12-day-old rats by the infusion of kaolin into the cisterna magna. After 7 days, cortical and ependymal lesions were made with thin wire in non-hydrocephalic brains and in hydrocephalic brains. The wounds were allowed to heal for times ranging from 1 day to 10 days post-lesion,...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/j.1365-2990.1992.tb00800.x
更新日期:1992-08-01 00:00:00
abstract::Patients infected with the malaria parasite Plasmodium falciparum may develop a diffuse reversible encephalopathy, termed cerebral malaria. It is unclear how the intraerythrocytic parasite, which sequesters in the cerebral microvasculature but does not enter the brain parenchyma, induces this neurological syndrome. Ad...
journal_title:Neuropathology and applied neurobiology
pub_type: 临床试验,杂志文章
doi:10.1046/j.1365-2990.1999.00188.x
更新日期:1999-08-01 00:00:00
abstract::Sclerosing meningioma is a rare morphologic subtype of meningioma and may be mistaken for atypical or malignant meningioma and astrocytoma or schwannoma because of marked collagen deposits and a sparse population of cells with little resemblance to meningothelial cells. Authors describe the histopathologic and immunop...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1046/j.0305-1846.2003.00517.x
更新日期:2004-04-01 00:00:00
abstract:AIMS:Normal neurovascular coupling, mediated by the fine interplay and communication of cells within the neurovascular unit, is critical for maintaining normal brain activity and cognitive function. This study investigated whether, with advancing age there is disruption of neurovascular coupling and specific cellular c...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/nan.12375
更新日期:2017-10-01 00:00:00
abstract::A case of congenital amaurotic idiocy, a subgroup of the neurovisceral lipidoses, is described. This is a rare condition of which only five cases have been reported previously. The brain was small and firm with marked neuronal loss and gliosis. Granular material with histochemical properties of the ceroid-lipofuscin g...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/j.1365-2990.1985.tb00041.x
更新日期:1985-11-01 00:00:00
abstract::Irradiation of a rat hind limb at 15 days of age caused marked shortening of the limb, with a consequent reduction in nerve length. The tibial nerves of the irradiated limbs were examined qualitatively and quantitatively, and compared with the unirradiated nerve. There was no evidence of fibre degeneration and only ve...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/j.1365-2990.1993.tb00404.x
更新日期:1993-02-01 00:00:00
abstract::Herpes simplex virus was injected into the vitreous of suckling and adult rabbits. In the suckling rabbits the infection caused an arrested myelination of the strip. Further, the infected strips showed degenerative changes with splitting and distension of myelin sheaths which then disintegrated. Ultrastructurally, her...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/j.1365-2990.1978.tb00530.x
更新日期:1978-01-01 00:00:00
abstract::The cellular distribution of the lysosomal proteinase cathepsin D was studied in a series of 76 neoplasms and 18 non-neoplastic tissues from the human central nervous system, using a well-characterized polyclonal antibody in a peroxidase-antiperoxidase technique. In the normal and developing brain, cathepsin D is conf...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/j.1365-2990.1990.tb00930.x
更新日期:1990-02-01 00:00:00
abstract::Minute amounts of tetanus toxin injected into the hippocampus of rats results in an epileptiform syndrome. When the toxin injection is made unilaterally or bilaterally into the ventral hippocampus, about one-third of animals with seizures show bilateral neuronal loss in dorsal CA1 of the hippocampus after 1 week. In a...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/j.1365-2990.1994.tb00985.x
更新日期:1994-08-01 00:00:00
abstract::Mice and rats are found to be equally susceptible to developing symmetrical brain stem lesions on exposure to alpha-chlorohydrin and in both species the earliest neurotoxic changes are strictly confined to glial cells, particularly astrocytes; haemorrhages are not found in either species. Minimal evidence of increased...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/j.1365-2990.1993.tb00434.x
更新日期:1993-06-01 00:00:00
abstract::Creutzfeldt-Jakob disease (CJD) is characterized by a loss of neurons accompanied by astrogliosis and spongiform changes in the neuropil. It has been recognized that reactive microglia occur in CJD but little is known about the regional distribution and extent of the microglial activation. We have, therefore, examined...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/j.1365-2990.1995.tb01097.x
更新日期:1995-12-01 00:00:00
abstract::In this study we describe the effects of trapidil, a putative platelet-derived growth factor-antagonist, on spontaneously occurring remyelination in rat spinal cord. Demyelination was created in the dorsal funiculus of 6- and 11-week-old female rats by the direct injection of 1.0 microliter of 1% lysolecithin. The ani...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:
更新日期:1997-02-01 00:00:00
abstract:AIMS:Paediatric low-grade gliomas (pLGGs) are a heterogeneous group of brain tumours associated with a high overall survival: however, they are prone to recur and supratentorial lesions are difficult to resect, being associated with high percentage of disease recurrence. Our aim was to shed light on the biology of pLGG...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/nan.12479
更新日期:2018-12-01 00:00:00
abstract::Defects of mitochondrial function have been proposed as a potential mechanism in the development and pathogenesis of Alzheimer's disease (AD) and neuronal apoptosis. Mitochondrial enzyme-deficient pyramidal neurones are found in greater quantities in the hippocampus of AD patients than in age-matched controls. The pre...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1046/j.1365-2990.2002.00414.x
更新日期:2002-10-01 00:00:00
abstract:UNLABELLED:It is well known that glial cell line-derived neurotrophic factor (GDNF) is a potent neurotrophic factor for motoneurons. We have previously shown that it greatly enhanced motoneuron survival and axon regeneration after implantation of peripheral nerve graft following spinal root avulsion. AIMS:In the curre...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/j.1365-2990.2012.01253.x
更新日期:2012-12-01 00:00:00
abstract::Mutation of the LRRK2 gene has been associated with autosomal dominant parkinsonism. An R1441C pathogenic substitution was identified in Family D, a large Western Nebraskan kindred, with four members demonstrating pleomorphic pathology at autopsy. One member of this family displayed tau pathology suggestive of progres...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/j.1365-2990.2006.00693.x
更新日期:2006-02-01 00:00:00
abstract:AIMS:We observed a microvascular structure in the cerebral cortex that has not, to our knowledge, been previously described. We have termed the structure a 'raspberry', referring to its appearance under a bright-field microscope. We hypothesized that raspberries form through angiogenesis due to some form of brain ischa...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/nan.12552
更新日期:2019-10-01 00:00:00
abstract::The brain is frequently affected by the spread of lung cancer, and haematogenous metastasis is a common route to brain metastasis. We therefore developed an isogenic brain metastasis model of lung cancer to use the Lewis lung carcinoma cell line and analysed dynamics of neoplastic cells after extravasation. Histologic...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/j.1365-2990.2007.00799.x
更新日期:2007-06-01 00:00:00