RGD Reference Report - PTEN and NDUFB8 aberrations in cervical cancer tissue. - Rat Genome Database

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PTEN and NDUFB8 aberrations in cervical cancer tissue.

Authors: Hsieh, SM  Maguire, DJ  Lintell, NA  McCabe, M  Griffiths, LR 
Citation: Hsieh SM, etal., Adv Exp Med Biol. 2007;599:31-6.
RGD ID: 2292501
Pubmed: PMID:17727244   (View Abstract at PubMed)

Cervical cancer is one of the world's major health issues. Despite many studies in this field, the carcinogenetic events of malignant conversion in cervical tumours have not been significantly characterised. The first aim of this project was to investigate the mutation status of the tumour suppressor gene- Phosphatase and Tension Homolog (PTEN)--in cervical cancer tissue. The second aim of this study was the analysis in the same cervical cancer tissue for aberrations in the mitochondrial electron transport chain subunit gene NDUFB8, which is localised to the same chromosomal contig as PTEN. The third aim was the evaluation of the potential therapeutic anti-cancer drug 2,4-Thiazolidinediones (TZDs) and its affect in regulating the PTEN protein in a cervical cancer cell line (HeLa). To approach the aims, paraffin-embedded cancerous cervical tissue and non-cancerous cervical tissue were obtained. DNA recovered from those tissues was then used to investigate the putative genomic changes regarding the NDUFB8 gene utilising SYBR Green I Real-Time PCR. The PTEN gene was studied via Dual-Labelled probe Real-Time PCR. To investigate the protein expression change of the PTEN protein, HeLa cells were firstly treated with different concentrations of 2,4-Thiazolidinediones and the level of PTEN protein expression was then observed utilising standard protein assays. Results indicated that there were putative copy-number changes between the cancerous cervical tissue and non-cancerous cervical tissue, with regard to the PTEN locus. This implies a potential gain of the PTEN gene in cancerous cervical tissue. With regards to normal cervical tissue versus cancerous cervical tissue no significant melting temperature differences were observed with the SYBR Green I Real-Time PCR in respect to the NDUFB8 gene. A putative up-regulation of PTEN protein was observed in TZD treated HeLa cells.

RGD Manual Disease Annotations    Click to see Annotation Detail View
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
Uterine Cervical Neoplasms  IAGP 2292501DNA:amplificationRGD 
Uterine Cervical Neoplasms  ISOPTEN (Homo sapiens)2292501; 2292501DNA:amplificationRGD 

Phenotype Annotations    Click to see Annotation Detail View

Manual Human Phenotype Annotations - RGD

TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
Abnormal uterine cervix morphology  IAGP 2292501DNA:amplificationRGD 
Objects Annotated

Genes (Rattus norvegicus)
Pten  (phosphatase and tensin homolog)

Genes (Mus musculus)
Pten  (phosphatase and tensin homolog)

Genes (Homo sapiens)
PTEN  (phosphatase and tensin homolog)


Additional Information