Cadmium toxicity in plants: is there any analogy to its carcinogenic effect in mammalian cells?
Cadmium is a heavy metal, which is classified as a human carcinogen and is known to be toxic to plants. However, plants do not respond to this metal by massive cell proliferation. In this review the various aspects of cadmium toxicity in plants are compared to related processes in mammalian cells. The following issues are discussed: cellular uptake of Cd ions, their intracellular transport, the effects on cellular signaling, nucleic acids and proteins, modification of gene expression, cell cycle control and apoptosis. Reviewed data suggest that such features as: ability to remove the oxidized proteins, slightly different regulation of cell cycle genes, specific pattern of apoptosis, makes plants resistant to Cd(2+)-induced uncontrolled cell proliferation.
Deckert
Joanna
J
Laboratory of Plant Ecophysiology, Department of Biology, A.Mickiewicz University, Al. Niepodległości 14, 61-713 Poznań, Poland. jagoda@amu.edu.pl
D000818:Animals; D017209:Apoptosis / Q000187:drug effects / Q000502:physiology; D002104:Cadmium / Q000633:toxicity*; D002273:Carcinogens / Q000633:toxicity*; D049109:Cell Proliferation / Q000187:drug effects; D002471:Cell Transformation, Neoplastic / Q000187:drug effects*; D005786:Gene Expression Regulation / Q000187:drug effects; D006801:Humans; D010944:Plants / Q000187:drug effects*; D015398:Signal Transduction / Q000187:drug effects / Q000502:physiology
D002273:Carcinogens; D002104:Cadmium