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Medical AI Inquiry: You was designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.  Labels: OBJECTIVE, METHODS, RESULTS. Meshes: Apoptosis, Cytochromes c, Cytoplasm, HeLa Cells, Humans, Microscopy, Fluorescence, Mitochondria, Newcastle disease virus, Protein Conformation, Protein Transport, bcl-2-Associated X Protein.
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Does newcastle disease virus infection promote Bax redistribution to mitochondria and cell death in HeLa cells? Context: Newcastle disease virus (NDV) is an avian paramyxovirus that has gained a lot of interest in cancer viro-therapeutic applications because of its ability to selectively induce apoptosis in human cancer cells. However, the underlying mechanisms by which NDV induces apoptosis in human cancer cells are still not entirely understood. In this study we examined the effect of a Malaysian velogenic strain of NDV, known as AF2240, on some elements of the intrinsic pathway of apoptosis. We show that NDV infection leads to conformational change of Bax protein. This is associated with the translocation of Bax from the cytoplasm to mitochondria and the release of cytochrome c into the cytoplasm. Interestingly, the level of Bcl-2 protein was not affected by NDV treatment.
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We have shown that Bax conformational change and subcellular distribution is involved in the intrinsic pathway of apoptosis induced by NDV. Final Decision: yes