title: Immunohistochemical localization of an N-acetyl amino-carbohydrate specific lectin (ACL-I) of the marine sponge Axinella corrugata.
abstract: The N-acetyl amino-carbohydrate specific lectin (ACL-I) was previously identified and purified by us from the marine sponge Axinella corrugata (phylum Porifera, class Demospongiae). The distribution of the specific lectin within the tissue of the sponge was studied by bright-field optical microscopy immunohistochemistry in order to better understand its physiological role in the sponge. Polyclonal antibodies were raised against purified ACL-I in mice and tested by Western blot technique. The immunohistochemical analysis of ACL-I in cross sections of A. corrugata showed that this lectin is found inside the denominated spherulous cells, which contain vesicles that store the lectin. Some evidence is shown that ACL-I might also be present in the extracellular matrix. It was not possible to demonstrate by the immunohistochemical technique if ACL-I is colocalized in both the plasma membrane and in the cytoplasm of the spherulous cells.
authors: Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil. rrdresch@gmail.com
authors: Roger Remy
authors: RR
authors: Dresch
authors: Gilberto Dolejal
authors: GD
authors: Zanetti
authors: João Henrique Corrêa
authors: JH
authors: Kanan
authors: Beatriz
authors: B
authors: Mothes
authors: Cléa Beatriz
authors: CB
authors: Lerner
authors: Vera Maria Treis
authors: VM
authors: Trindade
authors: Amélia Teresinha
authors: AT
authors: Henriques
authors: Magdolna Maria
authors: MM
authors: Vozári-Hampe
mesh_terms: D000818:Animals; D047089:Axinella / Q000166:cytology / Q000378:metabolism*; D007150:Immunohistochemistry; D037102:Lectins / Q000032:analysis* / Q000737:chemistry* / Q000276:immunology
chemical_list: D037102:Lectins