The generation of an allergic immune response requires at least two signals for complete activation of T cells. Costimulatory molecules are integral to the second signal. In this review, we analyze the costimulatory molecule signaling lymphocytic activation molecule (SLAM) and other recently described SLAM family members. We highlight recent findings that position SLAM as critical for allergic inflammation and its role in modulation of cytokine secretion. Furthermore, a possible role of SLAM as a link between the adaptive and innate immune response is also discussed. Understanding the role of costimulatory molecules, including SLAM and SLAM family members, may elucidate mechanisms involved in the allergic immune response, and suggest potential therapeutic opportunities.
Keywords: Allergy, SLAM, SAP, XLP, costimulatory molecules
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