Expression profiling of tubulin isotypes and microtubule-interacting proteins using real-time polymerase chain reaction.

Real-time polymerase chain reaction (PCR) has been used for quantification of intracellular mRNA levels in cell culture and tissue samples. It is an important tool for studying antimitotic drug effects on tubulin isotype and microtubule-interacting protein levels and for measuring differences in normal and tumor tissue samples that could have predictive or prognostic applications. Both quantitative and comparative methods are valuable approaches; however, the selection of either approach requires an understanding of their benefits and challenges. In this chapter, we provide detailed protocols for real-time PCR experiments, discuss issues to consider in selecting real-time PCR methodologies, and give examples utilizing either quantitative or comparative approaches.