Developmental and immune regulation of gene expression in Hymenolepis diminuta.

Abstract:

:Gene expression and its regulation was studied in the rat tapeworm, Hymenolepis diminuta, during strobilization. RNAs extracted from the different developmental stages of the parasite were translated in vitro in a rabbit reticulocyte lysate system. Two-dimensional patterns of the translational products were compared with the 2-dimensional patterns obtained by metabolic labelling with [35S]methionine. The results indicated a post-transcriptional regulation of gene expression during strobilization in this parasite. Gene expression and its regulation was also studied in H. diminuta obtained from 'non-permissive' hosts (mice) and immune suppressed mice and compared with the parasites of the same age obtained from 'permissive' rats hosts. The 2-dimensional patterns of the in vitro translation products, obtained by translating the RNA of different groups of parasites, were compared with the patterns of gene products obtained from parasites using [35S]methionine metabolic labelling. The results indicated a massive post-transcriptional regulation of gene expression, the latter inhibited in parasites obtained from normal mice, but not in immune suppressed mice.

journal_name

Mol Biochem Parasitol

authors

Siddiqui AA,Karcz SR,Podesta RB

doi

10.1016/0166-6851(87)90014-4

subject

Has Abstract

pub_date

1987-08-01 00:00:00

pages

19-28

issue

1

eissn

0166-6851

issn

1872-9428

pii

0166-6851(87)90014-4

journal_volume

25

pub_type

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