Ultrastructural non-radioactive in situ hybridization of GH mRNA in rat pituitary gland: pre-embedding vs ultra-thin frozen sections vs post- embeddingD Le Guellec, A Trembleau, C Pechoux, F Gossard and G Morel Laboratoire de Cytologie Moleculaire, CNRS UPR412, Universite Claude Bernard, Villeurbanne, France. In situ hybridization at the ultrastructural level can be carried out using three different methods: on vibratome sections before embedding in epoxy resin, on ultra-thin frozen sections, or on ultra-thin sections of tissues embedded in hydrophilic resin such as Lowicryl. With the purpose of comparing the sensitivity, resolution, and ultrastructural preservation of these three methods, we examined the expression of the growth hormone (GH) gene in anterior pituitary cells by in situ hybridization at the ultrastructural level, using a synthetic oligonucleotide complementary to the codons of the mRNA from Gln 45 to Ser 54 labeled at the 3' end of biotin-21dUTP. All these methods gave similar results: mRNA was located on the lamellar endoplasmic reticulum of somatotrophs. The pre-embedding method gave the best ultrastructural preservation, with low resolution with the enzymatic detection system and an intermediate sensitivity. A probe concentration of 10 pmol/ml was sufficient to obtain a signal. With this method gold particles could not be used without pre-treatment. The frozen section method gave the best sensitivity (a signal was observed with 4 pmol/ml of probe) but the lowest ultrastructural preservation. On ultra-thin Lowicryl sections, resolution was as high as with the frozen-section method, ultrastructural conservation was intermediate, and sensitivity was low. These results indicate that the last method seems to be a good compromise between sensitivity and ultrastructural preservation.
Volume 40,
Issue 7,
pp. 979-986,
07/01/1992
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W. J. Howat, A. Warford, J. N. Mitchell, K. F. Clarke, J. S. Conquer, and J. McCafferty Resin Tissue Microarrays: a Universal Format for Immunohistochemistry J. Histochem. Cytochem., October 1, 2005; 53(10): 1189 - 1197. [Abstract] [Full Text] [PDF] |
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A. Matsuno, J. Itoh, S. Takekoshi, T. Nagashima, and R. Y. Osamura Three-dimensional Imaging of the Intracellular Localization of Growth Hormone and Prolactin and Their mRNA Using Nanocrystal (Quantum Dot) and Confocal Laser Scanning Microscopy Techniques J. Histochem. Cytochem., July 1, 2005; 53(7): 833 - 838. [Abstract] [Full Text] [PDF] |
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D. Gingras and M. Bendayan Evaluation of Pancreatic Amylase mRNA upon Cholinergic Stimulation of Secretion J. Histochem. Cytochem., January 1, 2005; 53(1): 93 - 103. [Abstract] [Full Text] [PDF] |
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I. Foucher, M. Volovitch, M. Frain, J. J. Kim, J.-C. Souberbielle, L. Gan, T. G. Unterman, A. Prochiantz, and A. Trembleau Hoxa5 overexpression correlates with IGFBP1 upregulation and postnatal dwarfism: evidence for an interaction between Hoxa5 and Forkhead box transcription factors Development, September 1, 2002; 129(17): 4065 - 4074. [Abstract] [Full Text] [PDF] |
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R. Y. Osamura, Y. Itoh, and A. Matsuno Applications of Plastic Embedding to Electron Microscopic Immunocytochemistry and In Situ Hybridization in Observations of Production and Secretion of Peptide Hormones J. Histochem. Cytochem., July 1, 2000; 48(7): 885 - 892. [Abstract] [Full Text] |
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E.-L. Punnonen, C. Fages, J. Wartiovaara, and H. Rauvala Ultrastructural Localization of ß-Actin and Amphoterin mRNA in Cultured Cells: Application of Tyramide Signal Amplification and Comparison of Detection Methods J. Histochem. Cytochem., January 1, 1999; 47(1): 99 - 112. [Abstract] [Full Text] |
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J. Chevalier, J. Yi, O. Michel, and X.-M. Tang Biotin and Digoxigenin as Labels for Light and Electron Microscopy in Situ Hybridization Probes: Where Do We Stand? J. Histochem. Cytochem., February 1, 1997; 45(4): 481 - 492. [Abstract] [Full Text] [PDF] |
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