1
|
Gomi H, Morikawa S, Shinmura N, Moki H, Yasui T, Tsukise A, Torii S, Watanabe T, Maeda Y, Hosaka M. Expression of Secretogranin III in Chicken Endocrine Cells: Its Relevance to the Secretory Granule Properties of Peptide Prohormone Processing and Bioactive Amine Content. J Histochem Cytochem 2015; 63:350-66. [PMID: 25673289 PMCID: PMC4409946 DOI: 10.1369/0022155415575032] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Accepted: 02/05/2015] [Indexed: 01/27/2023] Open
Abstract
The expression of secretogranin III (SgIII) in chicken endocrine cells has not been investigated. There is limited data available for the immunohistochemical localization of SgIII in the brain, pituitary, and pancreatic islets of humans and rodents. In the present study, we used immunoblotting to reveal the similarities between the expression patterns of SgIII in the common endocrine glands of chickens and rats. The protein-protein interactions between SgIII and chromogranin A (CgA) mediate the sorting of CgA/prohormone core aggregates to the secretory granule membrane. We examined these interactions using co-immunoprecipitation in chicken endocrine tissues. Using immunohistochemistry, we also examined the expression of SgIII in a wide range of chicken endocrine glands and gastrointestinal endocrine cells (GECs). SgIII was expressed in the pituitary, pineal, adrenal (medullary parts), parathyroid, and ultimobranchial glands, but not in the thyroid gland. It was also expressed in GECs of the stomach (proventriculus and gizzard), small and large intestines, and pancreatic islet cells. These SgIII-expressing cells co-expressed serotonin, somatostatin, gastric inhibitory polypeptide, glucagon-like peptide-1, glucagon, or insulin. These results suggest that SgIII is expressed in the endocrine cells that secrete peptide hormones, which mature via the intragranular enzymatic processing of prohormones and physiologically active amines in chickens.
Collapse
Affiliation(s)
- Hiroshi Gomi
- Department of Veterinary Anatomy, College of Bioresource Sciences, Nihon University, Fujisawa, Japan (HG, SM, NS, HM, TY, AT)
| | - Satomi Morikawa
- Department of Veterinary Anatomy, College of Bioresource Sciences, Nihon University, Fujisawa, Japan (HG, SM, NS, HM, TY, AT)
| | - Naoki Shinmura
- Department of Veterinary Anatomy, College of Bioresource Sciences, Nihon University, Fujisawa, Japan (HG, SM, NS, HM, TY, AT)
| | - Hiroaki Moki
- Department of Veterinary Anatomy, College of Bioresource Sciences, Nihon University, Fujisawa, Japan (HG, SM, NS, HM, TY, AT)
| | - Tadashi Yasui
- Department of Veterinary Anatomy, College of Bioresource Sciences, Nihon University, Fujisawa, Japan (HG, SM, NS, HM, TY, AT)
| | - Azuma Tsukise
- Department of Veterinary Anatomy, College of Bioresource Sciences, Nihon University, Fujisawa, Japan (HG, SM, NS, HM, TY, AT)
| | - Seiji Torii
- Laboratory of Secretion Biology, Institute for Molecular and Cellular Regulation, Gunma University, Maebashi, Japan (ST)
| | - Tsuyoshi Watanabe
- Department of Microscopic Anatomy and Cell Biology, Asahikawa Medical College, Asahikawa, Japan (TW)
| | - Yoshinori Maeda
- Laboratory of Molecular Life Sciences, Department of Biotechnology, Akita Prefectural University, Akita, Japan (YM, MH)
| | - Masahiro Hosaka
- Laboratory of Molecular Life Sciences, Department of Biotechnology, Akita Prefectural University, Akita, Japan (YM, MH)
| |
Collapse
|
2
|
Kurakin A, Hoffman NG, Kay BK. Molecular recognition properties of the C-terminal Sh3 domain of the Cbl associated protein, Cap. THE JOURNAL OF PEPTIDE RESEARCH : OFFICIAL JOURNAL OF THE AMERICAN PEPTIDE SOCIETY 1998; 52:331-7. [PMID: 9894838 DOI: 10.1111/j.1399-3011.1998.tb00657.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
A phage-displayed combinatorial peptide library was used to define the specificity of one of the three Src homology 3 (SH3) domains in a novel cytoskeletal protein, named CAP, for Cbl Associated Protein. The C-terminal SH3 domain was used to affinity select peptides with the consensus, PXPPXRXSSL, from a library of X6PXXPX6 peptides. Peptide sequences resembling this consensus were identified in two signal transduction proteins, c-Cbl and son-on-sevenless (Sos), previously shown to interact with the C-terminal SH3 domain of CAP. Genetic fusion of 16 and 14 amino acid segments of c-Cbl and Sos, respectively, to bacterial alkaline phosphatase confirmed that these segments were potential ligand sites for the C-terminal SH3 domain of CAP. Alanine-scanning mutagenesis of the c-Cbl peptide ligand confirmed that most of the residues, which were conserved among the peptide ligands selected from the combinatorial peptide library, contributed to binding to the C-terminal SH3 domain of CAP.
Collapse
Affiliation(s)
- A Kurakin
- Department of Pharmacology, University of Wisconsin-Madison, USA
| | | | | |
Collapse
|