Membrane Transporters in Human Parotid Gland-Targeted Proteomics Approach.
Joanna Lapczuk-RomanskaDiana BuschEwa GieruszczakAgnieszka DrozdzikKatarzyna PiotrowskaRobert KowalczykStefan OswaldMarek DroździkPublished in: International journal of molecular sciences (2019)
Salivary glands provide secretory functions, including secretion of xenobiotics and among them drugs. However, there is no published information about protein abundance of drug transporters measured using reliable protein quantification methods. Therefore, mRNA expression and absolute protein content of clinically relevant ABC (n = 6) and SLC (n = 15) family member transporters in the human parotid gland, using the qRT-PCR and liquid chromatography‒tandem mass spectrometry (LC-MS/MS) method, were studied. The abundance of nearly all measured proteins ranged between 0.04 and 0.45 pmol/mg (OCT3 > MRP1 > PEPT2 > MRP4 > MATE1 > BCRP). mRNAs of ABCB1, ABCC2, ABCC3, SLC10A1, SLC10A2, SLC22A1, SLC22A5, SLC22A6, SLC22A7, SLC22A8, SLCO1A2, SLCO1B1, SLCO1B3 and SLCO2B1 were not detected. The present study provides, for the first time, information about the protein abundance of membrane transporters in the human parotid gland, which could further be used to define salivary bidirectional transport (absorption and secretion) mechanisms of endogenous compounds and xenobiotics.
Keyphrases
- endothelial cells
- liquid chromatography tandem mass spectrometry
- protein protein
- induced pluripotent stem cells
- amino acid
- mass spectrometry
- simultaneous determination
- antibiotic resistance genes
- randomized controlled trial
- emergency department
- ms ms
- systematic review
- high resolution
- optical coherence tomography
- drug induced
- anaerobic digestion