Hengameh Hoshyar-Chamanarae; Madjid Momeni Moghaddam
Abstract
Mitophagy occurs exclusively in the mitochondrial organ, itself considered one of the types of autophagy and plays a very specific role in cellular functions as well as in controlling tissue expansion. So knowing this process as much as possible can help us understand many of the cell processes, especially ...
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Mitophagy occurs exclusively in the mitochondrial organ, itself considered one of the types of autophagy and plays a very specific role in cellular functions as well as in controlling tissue expansion. So knowing this process as much as possible can help us understand many of the cell processes, especially the cell aging process, as well as the pathways that cause physiological diseases.
In the process of mitophagy in the yeast Saccharomyces cerevisiae, three genes are directly involved, namely ATG 11, ATG 32, and ATG 8. This process has been researched for many years, but winning the 2016 Nobel Prize in Physiology for his discoveries of mechanisms for Autophagy by Yoshinori Ohsumi caused the world's attention to this cellular mechanism.
In recent years, the Saccharomyces cell model has received a lot of attention in understanding the process of cell aging and chronic diseases such as type 2 diabetes, Parkinson's, Alzheimer's, and many types of cancer, and this article reviews the importance of the above genes and specifically examines the pathway in cervical Saccharomyces.
The specific Autophagy of each organelle can help cure painful and chronic diseases such as type 2 diabetes, Parkinson's, Alzheimer's, and many types of cancer. They hope that by finding the mechanisms, Autophagy can make it more active or keep it active until the end of life, and in this way, it can cure these diseases or at least help cure a lot. This review article attempts to introduce and overview the role of key genes in the process.
Jalal Soltani; Jonathan A. Lal; G. Paul H. van Heusden; Paul J.J. Hooykaas
Abstract
Agrobacterium tumefaciens is capable of gene transfer to both plant and non-plant organisms. Indeed, upon infection of eukaryotic cells, Agrobacterium tumefaciens transfers a piece of its tumor inducing (Ti)-plasmid, called T-DNA, to the host cell nucleus, which subsequently integrates into the host ...
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Agrobacterium tumefaciens is capable of gene transfer to both plant and non-plant organisms. Indeed, upon infection of eukaryotic cells, Agrobacterium tumefaciens transfers a piece of its tumor inducing (Ti)-plasmid, called T-DNA, to the host cell nucleus, which subsequently integrates into the host genome. The VirD2 virulence protein which has relaxase endonuclease activities covalently binds to the 5'end of T-DNA and facilitates its transfer, nuclear localization and integration into the host genome in collaboration with the interacting proteins of the host cell. The VirD2 is essential for Agrobacterium–mediated transformation of both plants and non-plant cells. Here, using yeast Green Flourescent Protein (yGFP) technology, we studied the subcellular localization of VirD2, expressed in the model eukaryote Saccharomyces cerevisiae. Fluorescence microscopy showed that an N-terminal yGFP fusion of VirD2 (i.e. 5' GFP-VirD2 3'), was located in the nucleus of yeast. With C-terminal fusions of VirD2 to yGFP (i.e. 5' VirD2-GFP 3'), no particular subcellular concentration of fluorescence was seen. This further confirms nuclear localization of VirD2 in eukaryotic cells and more importantly highlights the role of Nuclear Localization Signal sequences (NLS) of the C-terminal of VirD2 in this phenomenon.
