RNA Affymetrix microarray analysis of colonic mucosal layer of Apc Min/+ mice fed or not with maslinic acid.

ABSTRACT: This experiment reports the RNA microarray data from the microarray analysis performed to the RNA isolated from colonic mucosal layer of Apc Min/+ mice. Apc Min/+ mice develop polyps in both the small and large intestine, with a greater incidence of intestinal adenomas observed in the former. We wanted to evaluate if maslinic acid (MA), a natural pentacyclic triterpene widely present in dietary plants and in olive fruit skins, could prevent spontaneous intestinal tumorigenesis in Apc Min/+ mice and through with mechanism MA executes its function. To do so, Apc Min/+ mice were fed for 6 weeks with a standard diet (control animals) or with the same diet supplemented with 100 mg of MA/kg feed (MA-treated animals). After 6 weeks, animals were killed and large intestine of each dead mouse was removed and placed on a plastic plate that was kept at 4ºC. After removal of the rectum, the colon was opened longitudinally with fine scissors, and mucus and feces were washed away. The colonic mucosal layer was incubated in Trizol for 3 min and scraped off of the muscle layer with the edge of a sterile glass slide. Cells were transferred into 800 microL trizol. Total RNA was isolated by using the Trizol method according to the manufacturer's protocol. Subsequently, it was purified by using the RNeasy Mini kit and digesting it with DNase I (Qiagen) according to the manufacturer's protocol. RNA pellets were resuspended in DEPC-treated, RNase-free water, and their purity and quantity were determined spectrophotometrically by using the NanoDrop ND-1000. RNA samples were considered suitable for further processing if their absorbance ratio 260/280 was higher than 1.9. Integrity was tested by using lab-on-a-chip technology on the BioAnalyzer 2100.

ORGANISM(S): Mus musculus

SUBMITTER: Silvia Marin 

PROVIDER: E-MTAB-4007 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress