Thursday, June 26, 2008

MSTF 2008 Hicks 2nd week Protein HIV

Monday we spent most of the time in lab reading different material.

Tuesday we spent mixing 3 different solutions for the research assignment (this will probably be a weekly necessity for each week's assay). We mixed top agarose, M9TB and LB. All mixtures were then brought to the proper pH and autoclaved. (This took the entire four hours although it should have been accomplished quicker, however, this was the first time that Trudi and I were actually performing the task ourselves.)

Wednesday was spent becoming familiar with a testing procedure called ELISA. Dr. Ghirlanda has supplied us with the particular protocol for this test and explained the procedures involved in the ELISA. This particular test is well documented for lab tests performing titers assaying antigens against specific antibodies. We will be starting the ELISA tomorrow to experience the procedures and results obtained by this particular method of testing.

Thursday we became familiar with ELISA procedures and the washing of the protein, pipetting, and diluting the serum. Dr. Ghirlanda guided us through the different steps actually showing how the 96 cells are filled with protein and subsequently washed and subjected to antibody solution. We used a multiple pipette applicator for the first time and could see how specific laboratory instruments are crucial to performing experiments in a timely fashion.

Friday we worked with Melissa and picked up where she stopped on Thursday afternoon.  We viewed gel electrophoresis and she showed us how she determined the ligation of the DNA strand.  We also looked at the photo density of the solution to determine the correct photo density before proceeding.  Melissa had already worked on preparing the phage plates so they were ready for a final count.  The plates did not look like the original so she chose to put them aside until Dr. Ghirlanda could see them.

Friday, June 20, 2008

Protein binding of specific cell membrane site resulting in inhibition of HIV virus entry using E. coli

Our work is being led by Giovanni Ghirlanda, the principal investigator and Melissa Ruben, grad student.

Monday we were shown the location of most of the lab work for this project, given the first set of papers regarding the project to read and met Melissa.

Tuesday we were shown the correct concentration of material and liquids required to produce the medium required for the growth of the e. coli virus. In doing this, correct sterility, non-contamination lab skills and lab safety (i.e. gloves, close-toed shoes, googles and common lab sense) were covered. We subsequently mixed both medium and agar solution and adjusted pH to 7.5 before we autoclaved both mixtures. Proper use of the autoclave, measuring instruments, sterility of lab equipment (using bleach for E. coli containers), use of the pipette calibration unit, and the optical density calibrator were shown.

Wednesday we were given the second paper on their lab project to read and study. Melissa had prepared petri dishes with E. coli cultures the afternoon before and we examined the number of phage circles present on each.

Thursday we met Giovanna Ghirlanda and Melissa took us to the chemistry computer lab to show us the chemistry program available to the chemistry department here at ASU. Great stuff!

Friday Giovanna gave us the short version of the protein binding project and clarified a few grey areas for us. Melissa showed us how to use the DNA concentrator and prepared a new mixture for electrophoresis.