The Impact of Immunodeficiency on NK Cell Maturation and Function

AbstractPurpose of ReviewNatural killer cells are innate lymphoid cells (ILCs) that play critical roles in human host defense and are especially useful in combating viral pathogens and malignancy.Recent FindingsThe NK cell deficiency (NKD) is particularly underscored in patients with a congenital immunodeficiency in which NK cell development or function is affected. The classical NK cell deficiency (cNKD) is a result of absent or a profound decrease in the number of circulating NK cells. In contrast, functional NKD (fNKD) is characterized by abnormal NK cell function but with normal number of NK cells. The combined immune deficiencies with significant impact on NK cells are not considered classical or functional NK cell deficiencies. In these disorders, the impairment of NK cells represents an important aspect of the overall immunodeficiency. In turn, this leads to improved insights on the NK cell development and function.SummaryHere, we detail the NK cell biology based upon recent natural killer cell defects described in combined immune deficiencies.
Source: Current Allergy and Asthma Reports - Category: Allergy & Immunology Source Type: research

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