title: Isolation of llama antibody fragments for prevention of dandruff by phage display in shampoo.
abstract: As part of research exploring the feasibility of using antibody fragments to inhibit the growth of organisms implicated in dandruff, we isolated antibody fragments that bind to a cell surface protein of Malassezia furfur in the presence of shampoo. We found that phage display of llama single-domain antibody fragments (VHHs) can be extended to very harsh conditions, such as the presence of shampoo containing nonionic and anionic surfactants. We selected several VHHs that bind to the cell wall protein Malf1 of M. furfur, a fungus implicated in causing dandruff. In addition to high stability in the presence of shampoo, these VHHs are also stable under other denaturing conditions, such as high urea concentrations. Many of the stable VHHs were found to contain arginine at position 44. Replacement of the native amino acid at position 44 with arginine in the most stable VHH that lacked this arginine resulted in a dramatic further increase in the stability. The combination of the unique properties of VHHs together with applied phage display and protein engineering is a powerful method for obtaining highly stable VHHs that can be used in a wide range of applications.
authors.affiliation: Department of Molecular and Cellular Biology, University of Utrecht, Padualaan 8, 3584 CH Utrecht, The Netherlands.
authors.forename: Edward
authors.initials: E
authors.lastname: Dolk
authors.forename: Marcel
authors.initials: M
authors.lastname: van der Vaart
authors.forename: David
authors.initials: D
authors.lastname: Lutje Hulsik
authors.forename: Gert
authors.initials: G
authors.lastname: Vriend
authors.forename: Hans
authors.initials: H
authors.lastname: de Haard
authors.forename: Silvia
authors.initials: S
authors.lastname: Spinelli
authors.forename: Christian
authors.initials: C
authors.lastname: Cambillau
authors.forename: Leon
authors.initials: L
authors.lastname: Frenken
authors.forename: Theo
authors.initials: T
authors.lastname: Verrips
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D000908:Antibodies, Fungal / Q000737:chemistry / Q000235:genetics / Q000276:immunology / Q000302:isolation & purification; D000918:Antibody Specificity; D002161:Camelids, New World / Q000276:immunology*; D012628:Dermatitis, Seborrheic / Q000382:microbiology / Q000517:prevention & control*; D003881:Dermatomycoses / Q000382:microbiology / Q000517:prevention & control; D005656:Fungal Proteins / Q000008:administration & dosage / Q000276:immunology; D006203:Hair Preparations; D007128:Immunoglobulin Fragments / Q000737:chemistry / Q000235:genetics / Q000276:immunology / Q000302:isolation & purification*; D007143:Immunoglobulin Heavy Chains / Q000737:chemistry / Q000235:genetics / Q000276:immunology; D007135:Immunoglobulin Variable Region / Q000737:chemistry / Q000235:genetics / Q000276:immunology; D008290:Malassezia / Q000276:immunology*; D008969:Molecular Sequence Data; D019151:Peptide Library; D012536:Scalp Dermatoses / Q000382:microbiology / Q000517:prevention & control
chemical_list: D000908:Antibodies, Fungal; D005656:Fungal Proteins; D006203:Hair Preparations; D007128:Immunoglobulin Fragments; D007143:Immunoglobulin Heavy Chains; D007135:Immunoglobulin Variable Region; D019151:Peptide Library