Universidad de Granada Digibug
 

Repositorio Institucional de la Universidad de Granada >
1.-Investigación >
Información complementaria de las Investigaciones (Datos en Bruto) >

Please use this identifier to cite or link to this item: http://hdl.handle.net/10481/31634

Title: Differentially expressed genes after treatment with hydroxytyrosol in DMBA-induced rat breast tumors
Authors: Granados Principal, Sergio
Ramírez Tortosa, María del Carmen
Quiles Morales, José Luis
Ramírez Tortosa, César Luis
Sánchez Rovira, Pedro
Camacho-Corencia, P.
Issue Date: 1-Jun-2009
Abstract: The aim of this study was to compare the gene expression profile changes of DMBA-induced rat breast tumors after treatment with hydroxytyrosol (a natural compound from virgin olive oil). To this end, a cDNA microarray experiment was performed (Affymetrix’s Rat Genome 230 2.0 array). This gene expression study was carried out on the tumor biopsy samples prior to hydroxytyrosol treatment, and compared with matched tumor biopsy samples after completion of the hydroxytyrosol treatment schedule. The result of this study was the identification of several genes related to apoptosis, cell cycle arrest, proliferation, differentiation, survival and transformation-related genes.
Description: [Organism] Rattus norvegicus
[Experiment type] Expression profiling by array
[Overall design] Breast tumors were induced with a single oral dose of 7,12-dimethylbenz(alpha)anthracene (100 mg/kg body weight) in female Sprague-Dawley rats to test the antitumor power of orally administrated hydroxytyrosol (0.5 mg/kg body weight 5 days/week for 6 weeks). Gene expression analysis was performed in paired samples as follows: HT final trucut tumor vs initial trucut tumor (HT final vs basal). For this assay, 5 samples were chosen according to histopathologic criteria (Bloom-Richardson grade II). Gene expression profiling was carried out using Affymetrix’s GeneChip technology, using the Rat Genome 230 v2.0 array from this provider. All the protocols and apparatus were recommended by Affymetrix. Total RNA from frozen mammary tumors was extracted by RNeasy Mini kit and homogenized by QIAshredder columns according to manufacturer’s instructions. The quality and quantity of the obtained RNA was checked out through agarose electrophoresis and later spectrophotometry at 260/280 nm. Biotinylated cRNA was synthesized following the IVT labeling kit from Affymetrix and purified by the GeneChip Sample Cleanup Module from Affymetrix. The quality and quantity of the obtained cRNA was again checked out through agarose electrophoresis and posterior spectrophotometry at 260/280 nm. After hybridization, slides were washed and scanned following the manufacturer’s standard protocol. Intensity values were normalized by Robust Multichip Average method and subsequently these were filtered to remove the control sequences and those with a hybridization signal close to background. The spike controls were: BioB, BioC, BioD and Cre; because BioB was the least abundant in the samples, it was used to estimate the sensitivity of the experiment. The housekeeping control was GAPDH. After non-supervised clustering using Pearson correlation coefficient, statistical significance of gene expression was estimated by Student’s T test for paired samples using GeneSpring GX 7.3 software (Agilent).
[Platforms (1)] GPL1355 [Rat230_2] Affymetrix Rat Genome 230 2.0 Array
[Relations] BioProject PRJNA116997
1. GSM399469 Breast tumor biopsy_hydroxytyrosol_07SE120. [Source name] Breast tumor biopsy, hydroxytyrosol, basal moment. [Characteristics] strain: Sprague-Dawley gender: female age: 12 weeks tissue: Breast tumor. Trucut Biopsy of breast tumor chemically induced with 7,12-dimethylbenz(a)anthracene before treatment with hydroxytyrosol. Such biopsy was taken when tumor had 2cm3 volume biopsy dimensions: 0.7 cm x 2.5 mm treatment: none sample: 66D2 (basal)
2. GSM399474 Total breast tumor_hydroxytyrosol_07SE135. [Source name] Total breast tumor, hydroxytyrosol, final moment. [Characteristics] strain: Sprague-Dawley gender: female age: 19 weeks tissue: Breast tumor. Breast tumor chemically induced with 7,12-dimethylbenz(a)anthracene at the moment of sacrifice. treatment: hydroxytyrosol (0,5 mg/kg weight/day, 5 days/week, for 6 weeks) by gavage after trucut biopsy. sacrifice: 7th week post-biopsy sample: 66D2 (final)
3. GSM399475 Breast tumor biopsy_hydroxytyrosol_07SE121. [Source name] Breast tumor biopsy, hydroxytyrosol, basal moment. [Characteristics] strain: Sprague-Dawley gender: female age: 12 weeks tissue: Breast tumor. Trucut Biopsy of breast tumor chemically induced with 7,12-dimethylbenz(a)anthracene before treatment with hydroxytyrosol. Such biopsy was taken when tumor had 2cm3 volume biopsy dimensions: 0.7 cm x 2.5 mm treatment: none sample: 67D3(basal)
4. GSM399476 Total breast tumor_hydroxytyrosol_07SE136. [Source name] Total breast tumor, hydroxytyrosol, final moment. [Characteristics] strain: Sprague-Dawley gender: female age: 19 weeks tissue: Breast tumor. Breast tumor chemically induced with 7,12-dimethylbenz(a)anthracene at the moment of sacrifice. treatment: hydroxytyrosol (0,5 mg/kg weight/day, 5 days/week, for 6 weeks) by gavage after trucut biopsy. sacrifice: 7th week post-biopsy sample: 67D3 (final)
5. GSM399477 Breast tumor biopsy_hydroxytyrosol_07SE122. [Source name] Breast tumor biopsy, hydroxytyrosol, basal moment. [Characteristics] strain: Sprague-Dawley gender: female age: 12 weeks tissue: Breast tumor. Trucut Biopsy of breast tumor chemically induced with 7,12-dimethylbenz(a)anthracene before treatment with hydroxytyrosol. Such biopsy was taken when tumor had 2cm3 volume biopsy dimensions: 0.7 cm x 2.5 mm treatment: none sample: 45D3 (basal)
6. GSM399478 Total breast tumor_hydroxytyrosol_07SE137. [Source name] Total breast tumor, hydroxytyrosol, final moment. [Characteristics] strain: Sprague-Dawley gender: female age: 19 weeks tissue: Breast tumor. Breast tumor chemically induced with 7,12-dimethylbenz(a)anthracene at the moment of sacrifice. treatment: hydroxytyrosol (0,5 mg/kg weight/day, 5 days/week, for 6 weeks) by gavage after trucut biopsy. sacrifice: 7th week post-biopsy sample: 45D3 (final)
7. GSM399892 Breast tumor biopsy_hydroxytyrosol_07SE123. [Source name] Breast tumor biopsy, hydroxytyrosol, basal moment. [Characteristics] strain: Sprague-Dawley gender: female age: 12 weeks tissue: Breast tumor. Trucut Biopsy of breast tumor chemically induced with 7,12-dimethylbenz(a)anthracene before treatment with hydroxytyrosol. Such biopsy was taken when tumor had 2cm3 volume biopsy dimensions: 0.7 cm x 2.5 mm treatment: none sample: 49I1 (basal)
8. GSM399893 Total breast tumor_hydroxytyrosol_07SE138. [Source name] Total breast tumor, hydroxytyrosol, final moment. [Characteristics] strain: Sprague-Dawley gender: female age: 19 weeks tissue: Breast tumor. Breast tumor chemically induced with 7,12-dimethylbenz(a)anthracene at the moment of sacrifice. treatment: hydroxytyrosol (0,5 mg/kg weight/day, 5 days/week, for 6 weeks) by gavage after trucut biopsy. sacrifice: 7th week post-biopsy sample: 49I1 (final)
9. GSM399894 Breast tumor biopsy_hydroxytyrosol_07SE124. [Source name] Breast tumor biopsy, hydroxytyrosol, basal moment . [Characteristics] strain: Sprague-Dawley gender: female age: 12 weeks tissue: Breast tumor. Trucut Biopsy of breast tumor chemically induced with 7,12-dimethylbenz(a)anthracene before treatment with hydroxytyrosol. Such biopsy was taken when tumor had 2cm3 volume biopsy dimensions: 0.7 cm x 2.5 mm treatment: none sample: 51I1 (basal)
10. GSM399912 Total breast tumor_hydroxytyrosol_07SE139. [Source name] Total breast tumor, hydroxytyrosol, final moment. [Characteristics] strain: Sprague-Dawley gender: female age: 19 weeks tissue: Breast tumor. Breast tumor chemically induced with 7,12-dimethylbenz(a)anthracene at the moment of sacrifice. treatment: hydroxytyrosol (0,5 mg/kg weight/day, 5 days/week, for 6 weeks) by gavage after trucut biopsy. sacrifice: 7th week post-biopsy sample: 51I1 (final)
Keywords: Animals
Chordates
Mammals
Nonhuman vertebrates
Rodents
Muridae
Rattus norvegicus
Dataset
URI: http://hdl.handle.net/10481/31634
Rights : Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License
Appears in Collections:Información complementaria de las Investigaciones (Datos en Bruto)

Files in This Item:

File Description SizeFormat
GSM399469.xlsBreast tumor biopsy_hydroxytyrosol_07SE1201.93 MBMicrosoft ExcelView/Open
GSM399474.xlsTotal breast tumor_hydroxytyrosol_07SE1351.93 MBMicrosoft ExcelView/Open
GSM399475.xlsBreast tumor biopsy_hydroxytyrosol_07SE1211.93 MBMicrosoft ExcelView/Open
GSM399476.xls Total breast tumor_hydroxytyrosol_07SE1361.93 MBMicrosoft ExcelView/Open
GSM399477.xlsBreast tumor biopsy_hydroxytyrosol_07SE1221.93 MBMicrosoft ExcelView/Open
GSM399478.xlsTotal breast tumor_hydroxytyrosol_07SE1371.93 MBMicrosoft ExcelView/Open
GSM399892.xlsBreast tumor biopsy_hydroxytyrosol_07SE1231.93 MBMicrosoft ExcelView/Open
GSM399893.xlsTotal breast tumor_hydroxytyrosol_07SE1381.93 MBMicrosoft ExcelView/Open
GSM399894.xlsBreast tumor biopsy_hydroxytyrosol_07SE1241.93 MBMicrosoft ExcelView/Open
GSM399912.xlsTotal breast tumor_hydroxytyrosol_07SE1391.93 MBMicrosoft ExcelView/Open
Recommend this item

This item is licensed under a Creative Commons License
Creative Commons

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! OpenAire compliant DSpace Software Copyright © 2002-2007 MIT and Hewlett-Packard - Feedback

© Universidad de Granada