We have located links that may give you full text access.
Type 3 iodothyronine deiodinase is expressed in human induced pluripotent stem cell derived cardiomyocytes.
Life Sciences 2018 June 16
AIMS: Type 3 iodothyronine deiodinase (D3), which converts thyroxine (T4 ) and 3,5,3'-triiodothyronine (T3 ) to 3,3',5'-triiodothyronine (rT3 ) and 3,3'-diiodothyronine (T2 ), respectively, inactivates thyroid hormones. We investigated the expression and regulation of D3 in human cardiomyocytes which were differentiated from human induced pluripotent stem cells (hiPSCs).
MAIN METHODS: We characterized D3 activity using liquid chromatography-tandem mass spectrometry (LC-MS/MS) analysis. D3, myosine heavy chain α and β (MHCα and β, respectively), sarcoplasmic reticulum calcium ATPase (SERCA), and phospholamban (PLB) mRNA levels were analyzed by quantitative real-time PCR (qPCR) in hiPSC-derived cardiomyocytes (hiPS-CMs).
KEY FINDINGS: We identified enzyme activity that catalyzes the conversion of T3 to T2 in both hiPS-CMs and hiPSCs, which showed characteristics compatible with those for D3. D3 mRNA was identified in these cells using qPCR analysis. T3 and hypoxia mimetics such as CoCl2 and DFO, increased the D3 mRNA level in both hiPS-CMs and hiPSCs. Addition of iopanoic acid, a competitive inhibitor of iodothyronine deiodination, in the culture medium of hiPS-CMs, increased the mRNA levels such as MHCα and β, SERCA, and PLB induced by T3 .
SIGNIFICANTS: Our findings indicate that D3 is expressed in hiPS-CMs, and may decrease the intracellular T3 concentration, and may decrease the expression of cardiac genes such as MHCα and β, SERCA, and PLB in hiPS-CMs.
MAIN METHODS: We characterized D3 activity using liquid chromatography-tandem mass spectrometry (LC-MS/MS) analysis. D3, myosine heavy chain α and β (MHCα and β, respectively), sarcoplasmic reticulum calcium ATPase (SERCA), and phospholamban (PLB) mRNA levels were analyzed by quantitative real-time PCR (qPCR) in hiPSC-derived cardiomyocytes (hiPS-CMs).
KEY FINDINGS: We identified enzyme activity that catalyzes the conversion of T3 to T2 in both hiPS-CMs and hiPSCs, which showed characteristics compatible with those for D3. D3 mRNA was identified in these cells using qPCR analysis. T3 and hypoxia mimetics such as CoCl2 and DFO, increased the D3 mRNA level in both hiPS-CMs and hiPSCs. Addition of iopanoic acid, a competitive inhibitor of iodothyronine deiodination, in the culture medium of hiPS-CMs, increased the mRNA levels such as MHCα and β, SERCA, and PLB induced by T3 .
SIGNIFICANTS: Our findings indicate that D3 is expressed in hiPS-CMs, and may decrease the intracellular T3 concentration, and may decrease the expression of cardiac genes such as MHCα and β, SERCA, and PLB in hiPS-CMs.
Full text links
Related Resources
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app
All material on this website is protected by copyright, Copyright © 1994-2024 by WebMD LLC.
This website also contains material copyrighted by 3rd parties.
By using this service, you agree to our terms of use and privacy policy.
Your Privacy Choices
You can now claim free CME credits for this literature searchClaim now
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app