Isotope-Labeled Lipids

Cholesterol-d₆ is the deuterium labeled Cholesterol. Cholesterol is the major sterol in mammals. It is making up 20-25% of structural component of the plasma membrane. Plasma membranes are highly permeable to water but relatively impermeable to ions and protons. Cholesterol plays an important role in determining the fluidity and permeability characteristics of the membrane as well as the function of both the transporters and signaling proteins. Cholesterol is also an endogenous estrogen-related receptor α (ERRα) agonist.

Itaconic acid-¹³C₅ is the ¹³C labeled Itaconic acid. Itaconic acid, a precursor of polymers, chemicals, and fuels, can be synthesized by many fungi. Itaconic acid also is a macrophage-specific metabolite. Itaconic acid mediates crosstalk between macrophage metabolism and peritoneal tumors.

α-Linolenic acid-¹³C₁₈ is the ¹³C labeled α-Linolenic acid. α-Linolenic acid, isolated from seed oils, is an essential fatty acid that cannot be synthesized by humans. α-Linolenic acid can affect the process of thrombotic through the modulation of PI3K/Akt signaling. α-Linolenic acid possess the anti-arrhythmic properties and is related to cardiovascular disease and cancer.

Glycochenodeoxycholic acid-d₄ is the deuterium labeled Glycochenodeoxycholic acid. Glycochenodeoxycholic acid (Chenodeoxycholylglycine) is a bile acid formed in the liver from chenodeoxycholate and glycine. It acts as a detergent to solubilize fats for absorption and is itself absorbed. Glycochenodeoxycholic acid (Chenodeoxycholylglycine) induces hepatocyte apoptosis.

Progesterone-d₉ is the deuterium labeled Progesterone. Progesterone is a steroid hormone that regulates the menstrual cycle and is crucial for pregnancy.

Dodecane-d₂₆ is the deuterium labeled Dodecane.

L-Isoleucine-15N is the 15N-labeled L-Isoleucine. L-isoleucine is a nonpolar hydrophobic amino acid. L-Isoleucine is an essential amino acid.

Genistein-d₄ is the deuterium labeled Genistein. Genistein, a soy isoflavone, is a multiple tyrosine kinases (e.g., EGFR) inhibitor which acts as a chemotherapeutic agent against different types of cancer, mainly by altering apoptosis, the cell cycle, and angiogenesis and inhibiting metastasis.

Octanoic acid-d₁₅ is the deuterium labeled Octanoic acid. Octanoic acid (Caprylic acid) is an oily liquid with a slightly unpleasant rancid taste and used commercially in the production of esters used in perfumery and also in the manufacture of dyes.

Octanoic acid-¹³C₄ is the ¹³C labeled Octanoic acid. Octanoic acid (Caprylic acid) is an oily liquid with a slightly unpleasant rancid taste and used commercially in the production of esters used in perfumery and also in the manufacture of dyes.

α-Vitamin E-d₆ is the deuterium labeled α-Vitamin E.

L-Carnitine-d₉ is the deuterium labeled L-Carnitine. L-Carnitine (Levocarnitine) is an endogenous molecule involved in fatty acid metabolism, biosynthesized within the human body using amino acids: L-lysine and L-methionine, as substrates. L-Carnitine functions to transport long chain fatty acyl-CoAs into the mitochondria for degradation by β-oxidation. L-carnitine can ameliorate metabolic imbalances in many inborn errors of metabolism.

Cyclosporin A-d₄ (Cyclosporine A-d₄) is the deuterated-labeled Cyclosporin A (HY-B0579). Cyclosporin A (Cyclosporine A) is an immunosuppressant which binds to the cyclophilin and inhibits phosphatase activity of protein phosphatase 2B (PP2B/calcineurin) with an IC₅₀ of 5 nM. Cyclosporin A is a molecular glue, binds to cyclophilin and calcineurin, leading to inactivation of nuclear Factor of activated T Cells (NFAT) and a subsequent decrease in the immune response. Cyclosporin A also inhibits CD11a/CD18 adhesion.

Daidzein-d₄ is the deuterium labeled Daidzein. Daidzein is a soy isoflavone, which acts as a PPAR activator.

γ-Aminobutyric acid-d₂ is the deuterium labeled γ-Aminobutyric acid. γ-Aminobutyric acid (4-Aminobutyric acid) is a major inhibitory neurotransmitter in the adult mammalian brain[1][2], binding to the ionotropic GABA receptors (GABAA receptors) and metabotropic receptors (GABAB receptors)[2].

Retinoic acid-d₅ is the the deuterium labeled Retinoic acid (HY-14649). Retinoic acid is a metabolite of vitamin A that plays important roles in cell growth, differentiation, and organogenesis. Retinoic acid is a natural agonist of RAR nuclear receptors, with IC₅₀s of 14 nM for RARα/β/γ. Retinoic acid bind to PPARβ/δ with K_d of 17 nM. Retinoic acid acts as an inhibitor of transcription factor Nrf2 through activation of retinoic acid receptor alpha.

Glycodeoxycholic acid-d₄ is the deuterium labeled Glycodeoxycholic Acid. Glycodeoxycholic Acid is an endogenous metabolite.

L-Isoleucine-d₁₀ is the deuterium labeled L-Isoleucine. L-isoleucine is a nonpolar hydrophobic amino acid. L-Isoleucine is an essential amino acid.

Aldosterone-d₇ is the deuterium labeled Aldosterone. Aldosterone is the primary mineralocorticoid. Aldosterone is a steroid hormone, and it is synthesized and secreted in response to renin-angiotensin system activation (RAS) or high dietary potassium by the zona glomerulosa (ZG) of the adrenal cortex. Aldosterone activity is dependent by the binding and activation of the cytoplasmic/nuclear mineralocorticoid receptor (MR) at cellular level.

DL-Serine-2,3,3-d₃ is the deuterium labeled DL-Serine. DL-Serine, a fundamental metabolite, is a mixture of D-Serine and L-Serine. DL-Serine has antiviral activity against the multiplication of tobacco mosaic virus (TMV).