Sphingolipids

Sphingosine-1-phosphate (S1P) is an agonist of S1P_1-5 receptors and a ligand of GPR3, GPR6 and GPR12. Sphingosine-1-phosphate is an intracellular second messenger and mobilizes Ca²⁺ as an extracellular ligand for G protein-coupled receptors. Sphingosine-1-phosphate is an important lipid mediator generated from Sphingomyelin (HY-113498) or other membrane phospholipids. Sphingosine-1-phosphate stimulates the DNA synthesis, cell proliferation and migration.

Myriocin (Thermozymocidin), a fungal metabolite could be isolated from Myriococcum albomyces, Isaria sinclairi and Mycelia sterilia, is a potent inhibitor of serine-palmitoyl-transferase (SPT) and a key enzyme in de novo synthesis of sphingolipids. Myriocin suppresses replication of both the subgenomic HCV-1b replicon and the JFH-1 strain of genotype 2a infectious HCV, with an IC₅₀ of 3.5 μg/mL for inhibiting HCV infection.

C16-Ceramide (d18:1/16:0) is a natural small molecule activating p53 through the direct and selective binding.

D-erythro-Sphingosine (Erythrosphingosine) is a very potent activator of p32-kinase with an EC₅₀ of 8 μM, and inhibits protein kinase C (PKC). D-erythro-Sphingosine (Erythrosphingosine) is also a PP2A activator.

α-Galactosylceramide (α-GalCer) is a synthetic glycolipid with antitumorial and immunostimulatory. α-Galactosylceramide is a very potent NKT cell agonist and binds effectively to CD1d. The complex of α-Galactosylceramide plus CD1d binds the NKT cell TCR (T cell antigen receptor).

Ceramides Mixture is an endogenous ceramide and consists of hydroxy and non-hydroxy fatty acid-containing ceramides. Ceramides Mixture is a main lipid component of the permeability barrier in epidermis. Ceramides Mixture is involved in the regulation of growth inhibition, cell cycle arrest, and modulation of telomerase activity.

The Golgi apparatus is composed of flattened vesicles superimposed on each other by unit membranes. The flattened vesicles are round with expanded and perforated edges. The Golgi fluorescent probe is a BODIPY-labeled ceramide derivative, the synthesis of which occurs in the endoplasmic reticulum and can then be transported to the Golgi via ceramide transport protein (CERT) or vesicular translocation, allowing specific labeling of the dye. BODIPY Fl C5-Ceramide is a Golgi-specific green fluorescent dye, which can visualise individual cells. Ex/Em= 505 nm/512 nm.

C22-Ceramide (d18:1/22:0) (N-Behenoyl-D-erythro-sphingosine) is an ultra-long-chain ceramide containing a C22:0 behenoyl acyl chain. C22-Ceramide can be glycosylated via CGT-3 to form C22 glucosylceramide (C22 GlcCer), which in turn maintains clathrin membrane localization and lysosomal homeostasis, inhibits TOR signaling and promotes SKN-1 activation, thereby enhancing oxidative stress resistance and extending the lifespan of C. elegans. C22-Ceramide can be used in research on cardiometabolic diseases such as type 2 diabetes, obesity, dyslipidemia, coronary artery disease and thin-cap fibroatheroma (TCFA), as well as oxidative stress and aging-related studies.

Fumonisin B1 is a mycotoxin produced from Fusarium moniliforme. Fumonisin B1 is a potent inhibitor of sphingosine N-acyltransferase (ceramide synthase) and disrupts de novo sphingolipid biosynthesis. Fumonisin B1 is the most abundant and toxic fumonisin.

C18-Ceramide (d18:1/18:0) is a bioactive molecule with multiple functions in cells, not a traditional agonist or inhibitor targeting a single site. It can act on multiple cellular targets, such as proteins related to endoplasmic reticulum stress (e.g., ATF-4, XBP-1, CHOP), proteins in the PI3K/AKT signaling pathway, and SNARE complex proteins. It exerts activities like inducing cell death, promoting autophagy, and regulating exocytosis through mechanisms such as activating endoplasmic reticulum stress, inhibiting the PI3K/AKT signaling pathway, and affecting lipid raft - related functions. It can be used in research on the mechanism of neuronal injury in the field of neuroscience and in the treatment research of cancers such as glioma in the field of oncology.

Phytosphingosine is a phospholipid with anti-inflammatory, antibacterial, and anti-cancer activities, which can induce apoptosis. Phytosphingosine is an immune regulator and can be used in the study of inflammatory skin diseases. Phytosphingosine is also an activator of GPR120 with an IC₅₀ value of 33.4 μM and can be used in the study of type II diabetes.

C6 Ceramide (C6-Cer) is a short-chain, cell-permeable ceramide pathway activator with anticancer activity. C6 Ceramide-mediated miR-29b expression participates in the progression of multiple myeloma through suppressing the proliferation, migration and angiogenesis of endothelial cells by targeting Akt signal pathway. C6 Ceramide exhibits multiple anti-cancer properties including cell cycle arrest, Apoptosis, inhibition of tumor growth and enhances the effects of chemotherapy in drug-resistant cancer cells. C6-ceramide can be used as an adjuvant for chemotherapeutic agents, to enhance anti-tumor effects.

C2 Ceramide (Ceramide 2) is the main lipid of the stratum corneum and a protein phosphatase 1 (PP1) activator. C2 Ceramide activates PP2A and ceramide-activated protein phosphatase (CAPP). C2 Ceramide induces cells differentiation, autophagy and apoptosis, inhibits mitochondrial respiratory chain complex III. C2 Ceramide is also a skin conditioning agent that protects the epidermal barrier from water loss.

D-Erythro-dihydrosphingosin directly inhibits cytosolic phospholipase A₂α (cPLA₂α) activity.

W146 is a selective antagonist of sphingosine-1-phosphate receptor 1 (S1PR1) with an EC₅₀ value of 398 nM.

C20 Ceramide (d18:1/20:0) (N-Arachidoyl-D-sphingosine) is a natural 20:0 ceramide and a N-acylsphingosine in which the ceramide N-acyl group is specified as eicosanoyl. C20 Ceramide (d18:1/20:0) acts as a key signal molecule mediating biological processes.

C24-Ceramide is an orally active competitive binding agonist of PIP4K2C (mTOR complex regulator), thereby activating the mTOR signaling pathway. At the same time, C24-Ceramide changes the membrane morphology by inducing the formation of a partially interlocked gel phase in the phospholipid bilayer. C24-Ceramide can promote the proliferation and migration of keratinocytes to accelerate skin wound healing and drive the proliferation and metastasis of gallbladder cancer cells. The level of C24-Ceramide in serum can be used as a diagnostic marker for gallbladder cancer.

C24:1-Ceramide is one of the most abundant naturally occurring ceramide. Ceramides regulates many diverse biological activities, such as cell apoptosis, cell differentiation, proliferation of smooth muscle cells, and inhibition of the mitochondrial respiratory chain.

Glucosylsphingosine (lyso-Gb1) is a deacylated form of glucosylceramide with neurotoxicity and is also a noncompetitively inhibitor of glucocerebrosidase with a K_i value of 30 μM. Glucosylsphingosine is promising for research of Krabbe and Gaucher disease.

Ganglioside GM3 is a precursor of a-, b-, and c-series gangliosides, interacts with transmembrane receptors such as the epidermal growth factor and insulin receptors, and regulates receptor functions by creating a specialized lipid environment. Ganglioside GM3 is synthesized by GM3 synthase and can be used for the research of hypercholesterolemia.