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Biology ETDs

Theses/Dissertations

Biomphalaria glabrata

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Molecular Studies On The Interactions Between Biomphalaria Snails And Schistosoma Mansoni, Lijun Lu Dec 2020

Molecular Studies On The Interactions Between Biomphalaria Snails And Schistosoma Mansoni, Lijun Lu

Biology ETDs

Biomphalaria snails serve as vectors for Schistosoma mansoni, a trematode causing human schistosomiasis. Control of Schistosoma mansoni involves chemotherapy of affected people, but new control methods built on improved understanding of schistosome-snail interactions are needed. My dissertation applies molecular and bioinformatics approaches to understand such interactions. Chapter 1 shows that significant differences exist among Biomphalaria species in Africa with respect to their ability to support schistosome development. Chapters 2 and 3 reveal the transcriptional responses of Biomphalaria glabrata susceptible (SUS) or resistant (RES) to Schistosoma mansoni. Chapter 2 identifies a new family of snail immune factors, the AIG …


Hemocyanin-Like 1 Protein, Unique To Planorbid Snails, Supports Reproductive Output Of Biomphalaria Glabrata, Vector Of Schistosomiasis, Janeth Pena Aug 2018

Hemocyanin-Like 1 Protein, Unique To Planorbid Snails, Supports Reproductive Output Of Biomphalaria Glabrata, Vector Of Schistosomiasis, Janeth Pena

Biology ETDs

The Neotropical freshwater snail, Biomphalaria glabrata is a major intermediate host of the parasite Schistosoma mansoni, causative agent of human intestinal schistosomiasis. Disease control efforts consist mainly of mass drug treatment but it is recognized that targeting of the snail vector is essential to prevent parasite transmission that leads to rapid (re)infections. This dissertation combines the knowledge of basic snail biology with modern molecular techniques including protein analysis, next-generation sequencing, proteomics, qRT-PCR and RNA interference to: (1) characterize hemocyanin-like genes in B. glabrata, in particular with further description of the egg mass fluid (EMF) protein hemocyanin-like 1 (Hcl-1), (2) …