• Development and Reproduction
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• v.7 no.1
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• pp.41-48
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• 2003

This report aimed at investigating the differential gene expressions of the adhesion receptors between ovariectomized (OVX) and estrus stage rat uteri (OVX vs. estrus pair) using the cDNA expression away analysis. In addition, this report aimed at confirming of the differential gene expressions of the adhesion receptors between OVX and progesterone (P$_4$) injected OVX rat uteri (OVX vs. OVX+P$_4$ pair). RNA samples were extracted from the uterus and reverse-transcribed in the presence of [$\alpha$$^{32}$ P]-dATP. Membrane sets of Rat Atlas array 1.2 II (Clontech) were hybridized with CDNA probe sets. RT-PCR was employed to validate the relative gene expression patterns obtained by the cDNA array. The results were well consistent to cDNA array analysis data except the fold changes of gene expression. Among a total of 1176 cDNAs, 5 genes of adhesion receotor including embigin protein, activated leukocyte cell adhesion molecule, afadin, neuroligin 2, semaphorin Z showed significant (more than 2-fold) changes in the OVX vs. late estrus pair. All of these genes were up regulated in estrus stage than OVX rat uterus. In the OVX vs. OVX+P$_4$ pair, 4 genes including osteonectin, afadin, neuroligin 2, semaphorin Z showed significant changes. All of these genes were also up regulated in OVX+P$_4$ injected rat uterus than OVX control. Three genes including afadin, neuroligin 2, semaphorin Z which were up regulated in estrus and OVX+P$_4$ injected rat uteri of both experimental pairs than OVX rat uteri. These genes seem to be under the control of P$_4$.

• Parasites, Hosts and Diseases
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• v.58 no.3
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• pp.249-255
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• 2020

Toxoplasma gondii, a ubiquitous, intracellular parasite of the phylum Apicomplexa, infects an estimated one-third of the human population as well as a broad range of warm-blooded animals. We have observed that some tyrosine kinase inhibitors suppressed the growth of T. gondii within host ARPE-10 cells. Among them, afatinib, human epithermal growth factor receptor 2 and 4 (HER2/4) inhibitor, may be used as a therapeutic agent for inhibiting parasite growth with minimal adverse effects on host. In this report, we conducted a proteomic analysis to observe changes in host proteins that were altered via infection with T. gondii and the treatment of HER2/4 inhibitors. Secreting proteins were subjected to a procedure of micor basic reverse phase liquid chromatography, nano-liquid chromatography-mass spectrometry, and ingenuity pathway analysis serially. As a result, the expression level of heterogeneous nuclear ribonucleoprotein K, semaphorin 7A, a GPI membrane anchor, serine/threonine-protein phosphatase 2A, and calpain small subunit 1 proteins were significantly changed, and which were confirmed further by western blot analysis. Changes in various proteins, including these 4 proteins, can be used as a basis for explaining the effects of T. gondii infections and HER2/4 inhibitors.