Alkaline stable immunoglobulin-binding proteins

    公开(公告)号:US11230576B2

    公开(公告)日:2022-01-25

    申请号:US16324651

    申请日:2017-08-07

    Abstract: The present invention relates to immunoglobulin (Ig) binding proteins comprising one or more Ig binding domains with amino acids selected from the group consisting at least of 1I, 11A, 11E, 11I, 35R, 35I, and 42L. The invention further relates to affinity matrices comprising the Ig binding proteins of the invention. The invention also relates to a use of these Ig binding proteins or affinity matrices for affinity purification of immunoglobulins and to methods of affinity purification using the Ig binding proteins of the invention.

    Engineered opsonin for pathogen detection and treatment

    公开(公告)号:US11059874B2

    公开(公告)日:2021-07-13

    申请号:US16892577

    申请日:2020-06-04

    Abstract: The present invention provides for engineered molecular opsonins that may be used to bind biological pathogens or identify subclasses or specific pathogen species for use in devices and systems for treatment and diagnosis of patients with infectious diseases, blood-borne infections or sepsis. An aspect of the invention provides for mannose-binding lectin (MBL), which is an abundant natural serum protein that is part of the innate immune system. The ability of this protein lectin to bind to surface molecules on virtually all classes of biopathogens (viruses, bacteria, fungi, protozoans) make engineered forms of MBL extremely useful in diagnosing and treating infectious diseases and sepsis.

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