RT Journal Article T1 The Factor H protein family: The switchers of the complement alternative pathway A1 Lucientes Continente, Laura A1 Márquez Tirado, Bárbara A1 Goicoechea de Jorge, Elena AB The factor H (FH) protein family is emerging as a complex network of proteins controlling the fate of the complement alternative pathway (AP) and dictating susceptibility to a wide range of diseases including infectious, inflammatory, autoimmune, and degenerative diseases and cancer. Composed, in man, of seven highly related proteins, FH, factor H-like 1, and 5 factor H-related proteins, some of the FH family proteins are devoted to down-regulating the AP, while others exert an opposite function by promoting AP activation. Recent findings have provided insights into the molecular mechanisms defining their biological roles and their pathogenicity, illustrating the relevance that the balance between the regulators and the activators within this protein family has in defining the outcome of complement activation on cell surfaces. In this review we will discuss the emerging roles of the factor H protein family, their impact in the complement cascade, and their involvement in the pathogenesis of complementmediated diseases associated with the AP dysregulation. PB Wiley SN 0105-2896 YR 2022 FD 2022-11-16 LK https://hdl.handle.net/20.500.14352/72698 UL https://hdl.handle.net/20.500.14352/72698 LA eng NO CRUE-CSIC (Acuerdos Transformativos 2022) NO Unión Europea. Horizonte 2020 NO Ministerio de Ciencia e Innovación (MICINN) NO Instituto de Salud Carlos III (ISCIII)/FEDER NO Comunidad de Madrid DS Docta Complutense RD 6 may 2024