Abstract:
:A simple spectrophotometric method for measuring DNA in proliferating cells is described. The method is an adaptation of the widely used diphenylamine (DPA) reaction to examine DNA in cells grown in a 96-well plate. This assay was capable of detecting as little as 10 ng DNA and could be used to measure DNA in stored as well as viable tissue samples. The DPA assay paralleled the MTT (3-[4,5-dimethyl-thiazol-2-yl]-2,5-diphenyltetrazolium bromide) assay of mitochondrial reductase in A549 cells, a human lung cancer cell line; in EMT6 cells, a mouse breast cancer cell line; and in a primary cell culture of neonatal rat astrocytes. Over several days of proliferative growth in tissue culture, the ratio of MTT to DPA remained constant. Since the DPA assay and MTT assay measured different parameters of the same cells, they could be employed as complementary spectrophotometric assessments of cell growth on a 96-well plates using the same automated enzyme-linked immunosorbent assay plate reader.
journal_name
Biotechniquesjournal_title
BioTechniquesauthors
Natarajan N,Shambaugh GE 3rd,Elseth KM,Haines GK,Radosevich JAsubject
Has Abstractpub_date
1994-07-01 00:00:00pages
166-71issue
1eissn
0736-6205issn
1940-9818journal_volume
17pub_type
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