HeLa cells were grown in
DMEM (Euroclone) cell culture medium, while CFPAC-1 cells were grown in
DMEM-F12 (Euroclone). Cell culture media were supplemented with 10% FBS (
ECS5000L Euroclone), 2 mM L-glutamine, 100 U/mL
penicillin, and 100 μg/mL
streptomycin (Euroclone). Primary fibroblasts were grown in RPMI medium (Euroclone) supplemented with 20% FBS (
ECS5000L Euroclone), 2 mM L-glutamine, 100 U/mL
penicillin, and 100 μg/mL
streptomycin (Euroclone). For sphingolipid transport functional analysis, for autophagic vacuoles detection, and for DENND5B immunolocalization studies, 30 × 10
5 per well primary fibroblasts derived from affected individuals’ dermal biopsies, HeLa, or CFPAC-1 cells were plated in
96-wells plates (Corning). For CFPAC-1 cells, plates were coated with
poly-D-lysine (Merck KGaA) to increase cellular adherence to the bottom of the wells. Cells were imaged 24 h after plating.
Scala M., Tomati V., Ferla M., Lena M., Cohen J.S., Fatemi A., Brokamp E., Bican A., Phillips JA I.I.I., Koziura M.E., Nicouleau M., Rio M., Siquier K., Boddaert N., Musante I., Tamburro S., Baldassari S., Iacomino M., Scudieri P., Rosenfeld J.A., Bellus G., Reed S., Al Saif H., Russo R.S., Walsh M.B., Cantagrel V., Crunk A., Gustincich S., Ruggiero S.M., Fitzgerald M.P., Helbig I., Striano P., Severino M., Salpietro V., Pedemonte N, & Zara F. (2024). De novo variants in DENND5B cause a neurodevelopmental disorder. American Journal of Human Genetics, 111(3), 529-543.