title: Decreased D2-40 immunoreactivity in stored paraffin sections and methods for preserving it.
abstract: D2-40, a monoclonal antibody against podoplanin, is a selective marker of lymphatic endothelium and is widely used for research on and diagnosis of pathology of lymphatic vessels. We examined the relation between the duration of tissue section storage and changes in immunostaining by D2-40 antibody; we evaluated also the effects of preservation methods on changes in immunostaining during storage. Staining by D2-40 was attenuated by long-term preservation of scalp skin and lymph node sections at room temperature. The attenuation of D2-40 staining in stored sections was improved by preservation at low temperature, i.e., 4° or - 30° C. We investigated also the immunostaining of preserved tissue sections using NZ-1 and Lyve-1, which are antibodies against lymphatic endothelium markers. Staining by NZ-1 or Lyve-1 antibody was detected clearly in sections that had been stored for 16 weeks. Our study suggests that either long-term storage of D2-40 immunostained tissue sections should be avoided or the section should be preserved at low temperature.
authors.affiliation: Department of Anatomy and Neuroscience, Hamamatsu University School of Medicine , 1 Handayama, Higashi-ku, Hamamatsu, Shizuoka , Japan.
authors.forename: T
authors.initials: T
authors.lastname: Sasaki
authors.forename: Y
authors.initials: Y
authors.lastname: Kawabata
authors.forename: N
authors.initials: N
authors.lastname: Suzuki
authors.forename: H
authors.initials: H
authors.lastname: Tanaka
authors.forename: M
authors.initials: M
authors.lastname: Sano
authors.forename: S
authors.initials: S
authors.lastname: Kato
authors.forename: A
authors.initials: A
authors.lastname: Takemura
authors.forename: N
authors.initials: N
authors.lastname: Unno
authors.forename: T
authors.initials: T
authors.lastname: Kojima
authors.forename: K
authors.initials: K
authors.lastname: Sato
mesh_terms: D058846:Antibodies, Monoclonal, Murine-Derived / Q000276:immunology*; D015415:Biomarkers / Q000032:analysis; D014408:Biomarkers, Tumor / Q000032:analysis*; D015925:Cryopreservation; D006801:Humans; D008198:Lymph Nodes / Q000276:immunology / Q000473:pathology; D042601:Lymphatic Vessels / Q000276:immunology*; D010232:Paraffin
chemical_list: D058846:Antibodies, Monoclonal, Murine-Derived; D015415:Biomarkers; D014408:Biomarkers, Tumor; C500987:monoclonal antibody D2-40; D010232:Paraffin
keywords: D2-40; Lyve-1; NZ-1; antigenicity; immunoreactivity; low temperature; preservation; stored sections