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TSH receptor signal...
TSH receptor signaling via cyclic AMP inhibits cell surface degradation and internalization of E-cadherin in pig thyroid epithelium.
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- Larsson, Fredrik, 1976 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för anatomi och cellbiologi,Institute of Anatomy and Cell Biology
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- Fagman, Henrik, 1975 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för anatomi och cellbiologi,Institute of Anatomy and Cell Biology
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- Nilsson, Mikael, 1958 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för anatomi och cellbiologi,Institute of Anatomy and Cell Biology
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(creator_code:org_t)
- Springer Science and Business Media LLC, 2004
- 2004
- English.
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In: Cellular and molecular life sciences : CMLS. - : Springer Science and Business Media LLC. - 1420-682X .- 1420-9071. ; 61:14, s. 1834-42
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Abstract
Subject headings
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- Incorporation of E-cadherin into the adherens junction is a highly regulated process required to establish firm cell-cell adhesion in most epithelia. Less is known about the mechanisms that govern the clearance of E-cadherin from the cell surface in both normal and pathological states. In this study, we found that the steady-state removal of E-cadherin in primary cultured pig thyroid cell monolayers is slow and involves intracellular degradation. Experimental abrogation of adhesion by a Ca2+ switch induces rapid cell surface proteolysis of E-cadherin. At the same time, endocytosed intact E-cadherin and newly synthesized E-cadherin accumulate in intracellular compartments that largely escape further degradation. Acute stimulation with thyroid-stimulating hormone (TSH) or forskolin prevents all signs of accelerated E-cadherin turnover. The findings indicate that TSH receptor signaling via cyclic AMP stabilizes the assembly and retention of E-cadherin at the cell surface. This suggests a new mechanism by which TSH supports maintenance of thyroid follicular integrity.
Keyword
- Animals
- Cadherins
- genetics
- metabolism
- Calcium
- metabolism
- Cyclic AMP
- metabolism
- Epithelium
- metabolism
- Forskolin
- metabolism
- Receptors
- Thyrotropin
- metabolism
- Signal Transduction
- physiology
- Swine
- Thyroid Gland
- metabolism
- Thyrotropin
- metabolism
Publication and Content Type
- ref (subject category)
- art (subject category)
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