CD79

Introduction

CD79 (

Scientists identified mutations in the BCR coreceptor CD79A/B that lead to chronic activation of BCR signaling. Somatic mutations affecting the ITAM signaling modules of CD79B and CD79A were detected frequently in biopsy samples.^[6] Moreover, some researchers believe that CD79 may emerge as an alternative target for the treatment of B-cell-dependent autoimmunity.^[7] Hardy et al. found that upon an Ag-induced BCR aggregation, CD79 is phosphorylated and initiates a cascade of downstream signaling events. Hardy et al. further characterized an alternate mode of BCR signaling that is induced by chronic AgR stimulation and maintains a state of B cell unresponsiveness termed "anergy".^[8] Other studies that focused on the deficiencies observed in neonatal antibody production can be due to various intrinsic features such as B-cell immaturity, poor B-cell repertoire or reduced strength of BCR signaling. Activation of the BCR with T-cell-dependent (TD) or TI antigens induces cross-linking of surface Ig molecules and binding to the transmembrane protein CD79.

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