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Related Experiment Video

Updated: Jul 5, 2026

Characterizing Mammalian Zinc Transporters Using an In Vitro Zinc Transport Assay
07:55

Characterizing Mammalian Zinc Transporters Using an In Vitro Zinc Transport Assay

Published on: June 2, 2023

Interactions between zinc and thymulin.

M Dardenne1, J M Pleau

  • 1CNRS URA 1461 Hôpital Necker 161, rue de Sèvres Paris F - 75015 France.

Metal-Based Drugs
|January 1, 1994
PubMed
Summary
This summary is machine-generated.

Thymulin, a hormone produced by thymic epithelial cells, requires zinc for activity. Its levels decrease with zinc deficiency, indicating its role in T cell function and immune response.

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Characterizing Mammalian Zinc Transporters Using an In Vitro Zinc Transport Assay
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Ion Mobility-Mass Spectrometry Techniques for Determining the Structure and Mechanisms of Metal Ion Recognition and Redox Activity of Metal Binding Oligopeptides
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Published on: September 7, 2019

Area of Science:

  • Immunology
  • Endocrinology
  • Biochemistry

Background:

  • Thymulin (formerly Facteur Thymique Sérique or FTS) is a metallopeptidic hormone produced by thymic epithelial cells (TEC).
  • It plays a crucial role in T cell differentiation, both within and outside the thymus.
  • Its biological activity is intrinsically linked to the presence of zinc.

Purpose of the Study:

  • To investigate the relationship between zinc and thymulin activity.
  • To determine if serum thymulin levels can serve as an indicator of zinc deficiency.
  • To explore the implications of zinc's role in T cell functions.

Main Methods:

  • Amino-acid sequencing of thymulin.
  • Nuclear magnetic resonance studies to determine its tridimensional conformation.
  • Experimental models of mild zinc deficiency in animals and humans.
  • Assessment of serum thymulin activity, T-cell subpopulations, and lymphokine production.

Main Results:

  • Thymulin's amino-acid sequence was determined as
  • The active form of thymulin is a zinc-bound metallopeptide with a specific conformation.
  • Zinc deficiency significantly decreased serum thymulin activity.
  • Zinc supplementation corrected the decreased thymulin activity.

Conclusions:

  • Serum thymulin activity is a sensitive indicator of zinc deficiency.
  • Zinc is essential for thymulin's biological activity and T cell functions.
  • These findings elucidate the critical role of zinc in modulating T cell immunity.