Laetitia CLOTAIRE

Laetitia CLOTAIRE

Ph.D student

Articles by Laetitia CLOTAIRE

  • Trypsin for Cell Dissociation

    Tuesday, January 23, 2024
    Usually, I detached my cells by using this sterile trypsin-EDTA mixture solution (0.05%). This works easier for HEK-293, CHO, HK-2, THP-1 cells by it’s more difficult for mesenchymal stells cells and fibroblasts. I recommend this product because its quickly effective and during cell dissociation its... read more
  • RPMI Cell Culture Medium

    Wednesday, January 17, 2024
    I use this cell culture medium for primary human cells in suspension and attached cells. For fibroblast culture, you just need to add an antibiotic (penicillin/streptavidin), 10% of serum, and beta-mercapto. I prefer to prepare 50 ml of medium to have as much fresh medium as possible. It is ... read more
  • ECL Substrate Kit

    Wednesday, January 17, 2024
    I use the Immobilon Western HRP Substrate during the western blot detection stage. You need to prepare some before detection at a ratio of 1:1 of peroxide solution and luminol reagent. Be careful when you use them to avoid contamination. It's not expensive and easy to use. read more
  • Cryopreservation Medium

    Wednesday, January 17, 2024
    To freeze delicate cells like fibroblasts, mesenchymal stem cells, monocytes, or PBMCs for example, I have been using the Synth-a-Freeze cryopreservation medium. In one step, after centrifugation, you put your cells in the 4°C cryogenic medium and freeze them in liquid nitrogen. It's easy and fast. ... read more
  • Blotting Paper

    Monday, January 08, 2024
    During the western blot transfer stage, I use these pre-cut fiber transfer pads. Using these thick papers (1.5 mm thick) allows the sandwiches to be tight and prevents the membrane from moving. With one pad, you can cut it out to use it on a sandwich. It’s easy to use and cheap. I highly recommended... read more
  • Transfer Membranes for Protein Electrophoresis & Western Blot

    Monday, January 08, 2024
    During the western blot transfer stage, I use Immobilon-P Transfer membrane (0.45 µm). It's easy to use. You need to pre-cut it and then you can pre-activate your membrane with ethanol or methanol. Wait for uniform transparency and then you can use your sandwich. read more
  • Medium for Transfection

    Wednesday, January 03, 2024
    During my transfection experiments, I use Opti-MEM (minimum essential medium) culture medium. It is recommended when you are using Lipofectamine reagent (cationic lipids). It's a simple, improved culture medium (substitutes fetal calf serum) that allows the cell (Sp2, AE-1, CHO, BHK-21 and HEK-293) ... read more
  • BSA Powder

    Friday, December 08, 2023
    I use BSA (bovine serum albumin) in the Western Blot experiment during the blocking step to saturate with all non-specific antibody sites. It is easy to prepare and solubilization is quick. Unfortunately, this depends heavily on your own antibodies. If you have good specificity with your antibodies,... read more
  • Oil for Microscopy Objective

    Friday, December 08, 2023
    I use this oil when I take pictures with microscopy photography in high objective (60X and 100X). This oil is necessary to avoid breaking the lenses and to obtain a clear image. It has a very oily and thick exterior texture, which gradually leads to stains on the edges of the bottle. A little ... read more
  • HEPES Buffer

    Friday, December 08, 2023
    I highly recommend this solution because in my experiences I use it very often to prepare my solutions. This allows me to control the variation in the pH of my buffer solution while limiting the quantity of ions present. It is the best buffer solution thanks to its zwitterionic property. This ... read more
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