2 edition of Role of the PDZ-binding motif of TRPM7 in mediating calcium-dependent cellular degeneration induced by chemical anoxia. found in the catalog.
Role of the PDZ-binding motif of TRPM7 in mediating calcium-dependent cellular degeneration induced by chemical anoxia.
Written in English
Recent studies have implicated members of the TRP channel superfamily as mediators of cellular degeneration induced by oxidative stress. Aarts et al., 2003, found that specific knockdown of the TRPM7 channel prevented neurons from dying following anoxic insult. The present study was aimed at determining the role of the PDZ-binding motif of TKPM7 in channel response to chemical anoxia. We generated a truncated construct of the TRPM7 channel that contained a deletion of the 9 C-terminal amino acids, thereby disrupting intracellular interactions mediated by the PDZ-binding motif. The full-length and truncated TRPM7 constructs were heterologously expressed in HEK-293T cells and exposed to NaCN treatment. We found that expression of the full-length and truncated constructs significantly increased calcium uptake induced by NaCN. Cell death, however, was increased only in cells expressing the full-length channel, suggesting a role for the PDZ-binding motif in mediating cytotoxic signalling events downstream of channel activation.
|The Physical Object|
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