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Antibodies in research of thymosin β4: investigation of cross‐reactivity and influence of fixatives
Author(s) -
Knop Jana,
App Christine,
Hannappel Ewald
Publication year - 2012
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1111/j.1749-6632.2012.06659.x
Subject(s) - antibody , thymosin , epitope , immunohistochemistry , western blot , chemistry , fixation (population genetics) , cross reactivity , microbiology and biotechnology , biology , immunology , biochemistry , cross reactions , gene
Antibodies against thymosin β4 are available from various sources and have been used in immunohistochemistry, ELISA, and Western blot analyses. None of these antibodies have been fully characterized for specificity and influence of fixation techniques. This presents a difficulty because many tissues express more than one member of the β‐thymosin family; in addition, highly homologous sequences are typical elements of β‐thymosins. It is also important to scrutinize the influence of fixatives on the antibody‐binding capability. Fixatives such as formaldehyde are well known as cross‐linking reagents. Chemical modifications within the thymosin β4 molecule might change the putative epitope recognized by the antibody. These considerations suggest that investigations on thymosin β4 antibodies available to the scientific community are important and necessary before any experiment can be performed to exclude cross‐reactivity with other β‐thymosins that are coexistent in the examined tissue and to prove antibody binding after fixation steps.