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Updated: Feb 24, 2026
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Sampling and Pretreatment of Tooth Enamel Carbonate for Stable Carbon and Oxygen Isotope Analysis
Published on: August 15, 2018
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Bicarbonate Transport During Enamel Maturation
Kaifeng Yin1,2, Michael L Paine3
1Center for Craniofacial Molecular Biology, Herman Ostrow School of Dentistry, University of Southern California, 2250 Alcazar Street, CSA103, Los Angeles, CA, 90033, USA.
Calcified Tissue International
|August 11, 2017
Summary
Tooth enamel formation involves pH regulation during maturation. Key proteins like carbonic anhydrases and bicarbonate transporters control acid-base balance, crucial for proper enamel development.
Area of Science:
- Biomineralization
- Developmental Biology
- Biochemistry
Background:
- Amelogenesis, or tooth enamel formation, is a complex biomineralization process with distinct secretory and maturation stages.
- During the secretory stage, ameloblasts secrete enamel matrix proteins (EMPs) in a neutral pH environment.
- The maturation stage involves EMP degradation and significant mineral deposition, leading to pH fluctuations.
Purpose of the Study:
- To review the roles of carbonic anhydrases and carbonate transporters in regulating pH during enamel maturation.
- To highlight proteins instrumental in maintaining extracellular acid-base balance in amelogenesis.
- To discuss the influence of miRNA regulation on bicarbonate transport in tooth enamel formation.
Main Methods:
- Literature review focusing on proteins involved in pH regulation during amelogenesis.
- Analysis of the mechanisms of bicarbonate transport and its regulation.
- Examination of the interplay between pH, mineral deposition, and protein processing.
Main Results:
- Identified key proteins including CA2, CA6, CFTR, AE2, NBCe1, and various SLC26 family members (SLC26A1/SAT1, SLC26A3/DRA, SLC26A4/PDS, SLC26A6/PAT1, SLC26A7/SUT2) as critical for pH control.
- Demonstrated ameloblast-mediated regulatory networks involving bicarbonate ion movement are essential for extracellular acid-base balance.
- Highlighted the association between miRNA regulation and bicarbonate transport in tooth enamel formation.
Conclusions:
- Extracellular acid-base balance during enamel maturation is tightly regulated by ameloblast-mediated networks.
- Carbonic anhydrases and bicarbonate transporters play vital roles in managing pH fluctuations during tooth enamel development.
- Understanding these regulatory mechanisms is crucial for insights into enamel biomineralization and potential therapeutic targets.
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