mass spectrometry

Probing the interaction interface of the GADD45?/MKK7 and MKK7/DTP3 complexes by chemical cross-linking mass spectrometry

GADD45? is selectively and constitutively expressed in Multiple Myeloma cells, and this expression correlates with an unfavourable clinical outcome. GADD45? physically interacts with the JNK kinase, MKK7, inhibiting its activity to enable the survival of cancer cells. DTP3 is a small peptide inhibitor of the GADD45?/MKK7 complex and is able to restore MKK7/JNK activation, thereby promoting selective cell death of GADD45?-overexpressing cancer cells.

A multi-methodological approach in the study of Italian PDO “Cornetto di Pontecorvo” red sweet pepper

A multi-methodological approach was applied to study red sweet peppers (Capsicum annuum L.) ecotype “Cornetto di Pontecorvo” grown in a greenhouse or in open field. This approach includes morphological analysis, chemical composition determination, and biological activity evaluation of different extracts from pepper fruits.

Metabolism of formestane in humans: identification of urinary biomarkers for antidoping analysis

Formestane (4-hydroxyandrost-4-ene-3,17-dione, 4OH-AED) is an aromatase inhibitor prohibited in sports. In recent years, it has been demonstrated that it can also originate endogenously by the hydroxylation in C4 position of androstenedione. Thus, the use of isotope ratio mass spectrometry (IRMS) is mandatory according to the World Antidoping Agency (WADA) to discriminate endogenous from synthetic origin.

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