pro-T cell

pro-T cell

The pro-T cell is a T cell progenitor that will develop into cells of the T lymphocyte lineage. These cells derive from the bone marrow, originally differentiating from hematopoietic stem cells, and are found in the thymus, where T cell development takes place. Pro-T cells represent the stage in T cell development prior to T cell-specific gene rearrangement. Their primary function is to proliferate and differentiate into mature T cells, which play a critical role in adaptive immunity, helping the body respond efficiently to foreign pathogens. In the bone marrow, hematopoietic stem cells can differentiate into common lymphoid progenitor cells. These cells are able to enter circulation and enter the thymus as thymus-seeding progenitor cells. These cells then differentiate into early thymic progenitors which proceed with T cell specification, developing from double negative (DN) to double positive (DP) to single positive (SP) T cells. Over the course of these developmental phases, the cells will commit to the T cell lineage and rearrange T cell receptor genes. In this pathway, pro-T cells can give rise to both alpha-beta and gamma-delta T cells and natural killer T (NKT) cells. Pro-T cells are a key constituent of the immune system, presenting a critical stage in the T cell developmental process. T cells are important players in adaptive immunity and help to initiate and orchestrate the immune response and eliminate pathogens and tumor cells. Pro-T cells are also an area of interest in the context of regenerative medicine to reconstitute T cells and adoptive T cell therapies as a potential source of T cells. (This extended description was generated by ChatGPT and reviewed by the CellGuide team, who added references, and by the CL editors, who approved it for inclusion in CL. It may contain information that applies only to some subtypes and species, and so should not be considered definitional.)

ZFA:0009350

CL:0000827