Abstract
A method for microencapsulation of isolated neonatal porcine Sertoli cells is described. Using a conventional alginate-poli-L-ornithine encapsulation procedure, which has been used in our laboratory for almost two decades to envelop pancreatic islets, we observed significant loss of Sertoli cell viability, possibly due to excessive Ca(2+) ion exposure. Replacing calcium with barium, or shortening the incubation period in the presence of Ca ions, we obtained barium or calcium alginate gel microbeads that did not alter morphology and viability of the encapsulated Sertoli cells. The procedure might permit access to a novel approach to immunologically alter cell graft acceptance.
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