Buccal cells DNA extraction to obtain high quality human genomic DNA suitable for polymorphism genotyping by PCR-RFLP and Real-Time PCR
J. appl. oral sci
;
20(4): 467-471, July-Aug. 2012. ilus, graf
Artículo
en Inglés
| LILACS
| ID: lil-650625
ABSTRACT
OBJECTIVE:
The aim of this study was to evaluate, by PCR-RFLP and real-time PCR, the yield and quality of genomic DNA collected from buccal cells by mouthwash after different storage times at room temperature. MATERIAL ANDMETHODS:
A group of volunteers was recruited to collect buccal cells using a mouthwash solution. The collected solution was divided into 3 tubes, one tube were used for immediate extraction and the remaining received ethanol and were kept at room temperature for 4 and 8 days followed by dna extraction. The concentration, purity and integrity of the dna were determined using spectrophotometry and electrophoresis. DNA quality differences among the three incubation times were also evaluated for genotyping EGF +61 a/g (rs 4444903) polymorphism by PCR-RFLP and for IRF6 polymorphism (rs 17015215) using real-time PCR.RESULTS:
There was no significant difference of dna yield (p=0.75) and purity (p=0.86) among the three different incubation times. DNA obtained from different incubation times presented high-molecular weight. The PCR-RFLP and real time pcr reactions were successfully performed for all DNA samples, even those extracted after 8 days of incubation. All samples genotyped by real-time pcr presented c allele for irf6 gene polymorphism (homozygous cc; heterozygous Ct) and the C allele was used as a reference for Ct values. The samples presented the same genotype for the different times in both techniques.CONCLUSION:
We demonstrated that the method described herein is simple and low cost, and that DNA can be extracted and pcr amplified after storage in mouthwash solution at room temperature.
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Polimorfismo de Longitud del Fragmento de Restricción
/
ADN
/
Técnicas de Genotipaje
/
Reacción en Cadena en Tiempo Real de la Polimerasa
/
Boca
Tipo de estudio:
Estudios de evaluación
Límite:
Adulto
/
Femenino
/
Humanos
Idioma:
Inglés
Revista:
J. appl. oral sci
Asunto de la revista:
Odontología
Año:
2012
Tipo del documento:
Artículo
/
Documento de proyecto
País de afiliación:
Brasil
Institución/País de afiliación:
Federal Fluminense University/BR
/
Fluminense Federal University/BR
Similares
MEDLINE
...
LILACS
LIS