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New therapeutic options in immuno-oncology consist in manipulating metabolic pathways. Whatever the mechanism of action of drug candidates Arginine remains a suitable surrogate biomarker of Arginase activity. Its quantification can be approached by ELISA!

We have set up and validated a series of antibodies targeting key neurotransmitters, including among others dopamine, serotonin, glutamate, noradrenaline. Besides antibodies, and for appropriate biological sample preparation, we developed an immunostaining kit that allows for immunofluorescence staining of various types of biological materials, as illustrated in these recent publications.

Our products were hilighted in 2020 in these scientific publication. Antibodies, STAINperfect and ELISA kits were used and referenced.

Novel therapeutic options in immuno-oncology consist in manipulating – directly or indirectly – metabolic pathways such as the one of IDO to relieve the immunosupressive functions of M2 macrophages. As to investigate innovative direct or indirect modulators of IDO activity, Kynurenine and Tryptophan represent valuable biomarkers to be measured and can easily be adressed through ELISA kits which thus offer screening capacities.

Arginine (ARG) is a basic non-essential amino acid well known to participate in physiological functions such as i) vascular tone homeostasis as contributing to the production of nitric oxide (NO) and ii) immune response control, through NO synthase (NOS) and Arginase enzymes, respectively. Our new validated IS-I-0400 ELISA kit allows for the determination of ARG in serum and plasma samples of a volume as low as 20μL and with a sensitivity of 2.1µM.

Through the degradation of L-Tryptophan, the Kynurenine pathway (KP) generates a series of catabolites collectively known as Kynurenines, which can exert immunomodulatory and/or neuroactive properties. Known to respectively harbor neuroprotective and neurotoxic functions, Kynurenic (KYNA) and Quinolinic (QA) acids are found to be dysregulated in several neuroinflammatory disorders including Parkinson and Alzheimer disease but also Amyotrophic Lateral Sclerosis and Multiple Sclerosis. We developed novel ELISA detection kits to monitor the imbalance between KYNA and QA levels in neurological diseases and evaluate the ability of novel KMO inhibitors to restore equilibrium within the KP and mitigate neurodegeneration.

HomoArginine (hArg) is a basic non-essential amino acid that exerts beneficial effects on vascular homeostasis, more likely through the increase of nitric oxide (NO) that can be explained through two mechanisms since hArg i) serves as a precursor of NO and ii) favors the elevation of L-Arg – main substrate of NO synthase – by inhibiting the enzyme Arginase. Our IS-I-0500 ELISA kit allows for the determination of hArg in serum and plasma samples in a minimal sample volume of 20μL and with a sensitivity of 125nM.

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96-w plate format / Low volume samples / Sensitive, easy-to-implement / Cross-validated with LC/MS