In situ hybridization of putative somatostatin mRNA within hypothalamus of the rat using synthetic oligonucleotide probes

Journal of Cellular Biochemistry - Tập 27 Số 4 - Trang 415-422 - 1985
R. Arentzen1, Frank Baldino1, Leonard G. Davis1, Gerald A. Higgins1, Lin Yuan1, Robert Manning1, B. Wolfson1
1Central Research and Development Department, E.I. du Pont de Nemours & Company, Wilmington, Delaware 19898.

Tóm tắt

AbstractThe distribution of mRNA with high sequence homology to somatostatin mRNA within the periventricular hypothalamus of rat was assessed using in situ hybridization techniques with synthetic oligodeoxyribonucleotide probes, complementary to the 3′ coding region of rat somatostatin mRNA. The probes (22‐ and 24‐mers) were 5′‐end labeled using T4 polynucleotide kinase and γ‐32P‐ATP. They were used either individually or after ligation with T4 DNA ligase to form a 46‐mer. Serial tissue sections ( < 10 μm) were taken from the level of the preoptic/anterior hypothalamus through the paraventricular hypothalamus. In situ hybridizations were conducted at room temperature in hybridization buffer. Neurons immuno‐reactive with antiserum raised against somatostatin were identified in alternate sections using standard immunocytochemical procedures. The anatomical location of the hybridization signal was determined by autoradiography. Our results show that the peri‐ and paraventricular hypothalamus is rich in transcripts putatively coding for somatostatin and that these transcripts are co‐distributed with neurons immunoreactive with antisomatostatin immunoglobulin.

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Thông tin xuất bản

Journal of Cellular Biochemistry

Tập 27 Số 4

415-422

Thông tin tác giả