Invertebrate Host-Parasite Relationships: Convergent Evolution of a Tropomyosin Epitope Between Schistosoma Sp, Fasciola hepatica, and Certain Pulmonate Snails

D. Weston, B. Allen, A. Thakur, P. T. Loverde, W. M. Kemp

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

Monoclonal antibodies (mAb) directed against Schistosoma mansoni tropomyosin isoform, SMTM (Xu et al. Experimental Parasitology69, 373-392, 1989), were used to test for cross-reactivity with Biomphalaria glabrata antigens. One mAb (1F10) recognized antigens of 39, 41, and 80 kDa in a snail head/foot antigen preparation but not a hepatopancreas antigen preparation, Another mAb (1C1) cross-reacted with a 39-kDa antigen in the head/foot extract but not in the hepatopancreas extract. Epitope mapping revealed the 1F10 epitope to be between amino acids 135 and 188 of both Bg39 (Dissous et al. Molecular and Biochemical Parasitology43, 245-256, 1990) and BgTMII (Weston and Kemp, Experimental Parasitology76, 358-370, 1993), while the 1C1 epitope was located between amino acids 189 and 213 of BgTMII. Various invertebrate species, including members from Trematoda, Pulmonata, Annelida, and Arthropoda, were tested for cross-reactivity with the monoclonal antibodies. While the 1F10 mAb displayed broad invertebrate cross-reactivity, the 1C1 mAb cross-reactivity was restricted to schistosomes, F. hepatica, and the pulmonate snails B. glabrata and Physa sp.

Original languageEnglish (US)
Pages (from-to)269-278
Number of pages10
JournalExperimental Parasitology
Volume78
Issue number3
DOIs
StatePublished - May 1994

ASJC Scopus subject areas

  • Parasitology
  • Immunology
  • Infectious Diseases

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