A COMPARATIVE ASSESSMENT OF FOLIC ACID-INDUCED CELLULAR SENESCENCE

Abhishek Chakraborty

Abstract


The biological functions of folic acid (FA) including the prevention of neural tube defects in developing embryos and synthesis of DNA and its repair, have been well reported in literature. As a result; the fortification of folic acid into many daily foods in Canada such as wheat and cereals is mandatory. We have shown that over-osage of FA causes blood haemolysis, leading to progressive anaemia. It is reported that 200 – 400 μg/ml of FA increases the size of blood cells within 2h of treatment, also leading to abnormal cell division and necrosis (in vitro concentrations). This observation suggests early cell senescence. We hypothesized that FA may play a vital role in cellular senescence. 5th generation Kidney fibroblast (COS-7) cells were treated with 200 μg of FA in combination with an anti-neoplastic agent, nocodazole- prior to FA treatment. FA increased the expression of fibronectin (protein marker for aging) of nocodazole treated cells. Furthermore, fibronectin expression was higher in FA-treated cells of the 14th generation compared to the 8th generation. 14th generation cells also showed a larger decrease in cell size when exposed to FA. This suggests FA over-dosage has an affect on the cell growth cycle.


Keywords


folic acid; cellular senescence; dietary fortification; kidney fibroblast cells

Full Text:

PDF


DOI: https://doi.org/10.13034/jsst.v8i1.41

Refbacks

  • There are currently no refbacks.


Copyright (c) 2015 Journal of Student Science and Technology