August 1993
Volume 34, Issue 9
Free
Articles  |   August 1993
Identification of alpha 1C-adrenergic receptor mRNA in bovine retinal pigment epithelium.
Author Affiliations
  • K Horie
    Department of Pediatric Pharmacology, National Children's Medical Research Center, Tokyo, Japan.
  • A Hirasawa
    Department of Pediatric Pharmacology, National Children's Medical Research Center, Tokyo, Japan.
  • K Masuda
    Department of Pediatric Pharmacology, National Children's Medical Research Center, Tokyo, Japan.
  • G Tsujimoto
    Department of Pediatric Pharmacology, National Children's Medical Research Center, Tokyo, Japan.
Investigative Ophthalmology & Visual Science August 1993, Vol.34, 2769-2775. doi:
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      K Horie, A Hirasawa, K Masuda, G Tsujimoto; Identification of alpha 1C-adrenergic receptor mRNA in bovine retinal pigment epithelium.. Invest. Ophthalmol. Vis. Sci. 1993;34(9):2769-2775.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

PURPOSE: To examine the localization of a novel alpha 1-adrenergic receptor subtype of alpha 1C receptor in the eye, we compared the amount of alpha 1C receptor transcripts in bovine retinal pigment epithelium (RPE) and in neural retina by employing reverse transcription of mRNA and the polymerase chain reaction (RT-PCR) assay. METHODS: RT-PCR assay with specific primers for the alpha 1C-adrenergic receptor and for beta-actin showed linear relationships between input quantity of RNA and the amount of amplified PCR products for the alpha 1C-adrenergic receptor and also for beta-actin, when PCR was conducted for 24 and 15 cycles, respectively. RESULTS: The RT-PCR assay demonstrated that the spontaneous expression level of the alpha 1C-adrenergic receptor mRNA was much higher in bovine RPE than in neural retina; the alpha 1C-adrenergic receptor/beta-actin ratio from RPE was 0.33 +/- 0.15 (n = 4), whereas that from neural retina was virtually zero. CONCLUSIONS: The RT-PCR assay is a sensitive semiquantitative method for a low abundance mRNA in a limited number of cells. Using the alpha 1C receptor as a model, we demonstrated the usefulness of this assay by showing the uneven distribution of the alpha 1C receptor transcripts in bovine RPE cells and neural retina.

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