Mice Deficient in Nucleoporin Nup210 Develop Peripheral T Cell Alterations

Area of Science:

• Cell Biology
• Immunology

Background:

• The nuclear pore complex (NPC) regulates transport between the nucleus and cytoplasm in eukaryotic cells.
• While core NPC proteins are well-studied, the function of components like Nup210 remains unclear.

Purpose of the Study:

• To investigate the role of Nup210 in T cell biology.
• To identify novel nucleopore complex functions using unbiased genetic screening.

Main Methods:

• An ENU mutagenesis screen was employed to identify mutations affecting the T cell compartment.
• Nup210 knockout mice were generated to study its function in T cell homeostasis.
• Flow cytometry was used to analyze CD4/CD8 T cell ratios.

Main Results:

• A mutation in Nup210 was identified in mice with altered CD4/CD8 T cell ratios.
• Nup210 was found to have a T cell-intrinsic function in maintaining peripheral T cell homeostasis.
• Nup210 knockout mice were viable and healthy, showing no other major phenotypes.

Conclusions:

• Nup210 is an essential component for peripheral T cell homeostasis.
• The deep evolutionary conservation of Nup210, despite seemingly redundant functions in other cell types, warrants further investigation.