immune

Taurochenodeoxycholic Acid (12-Deoxycholyltaurine) is one of the main bioactive substances of animals' bile acid.

Pyrroloquinoline quinone (PQQ), as a well-known redox enzyme cofactor, PQQ can protect NS/PCs against glutamate toxicity associated with ROS-mediated mitochondrial pathway,

Pyrroloquinoline quinone disodium salt (Methoxatin disodium salt), an aromatic tricyclic o-quinone, is a redox cofactor for bacterial dehydrogenases. It is an efficient electron transfer catalyst from a number of organic substrates to molecular oxygen (O2), constructing quinoprotein model reactions.

Taurochenodeoxycholic acid sodium (Sodium taurochenodeoxycholate) is one of the main bioactive substances of animals' bile acid. Taurochenodeoxycholic acid sodium induces apoptosis and shows obvious anti-inflammatory and immune regulation properties. It can increase glucose-induced insulin secretion and stimulate the electrical activity of α2-cells and enhance cytosolic Ca(2+) concentration ([Ca(2+)](c)).

3-Oxo-5β-cholanoic acid (Dehydrolithocholic acid) is a bile acid metabolite that inhibits TH17 cell differentiation by directly binding to the transcription factor RORγt with a Kd of 1.13 μM.

7α,25-dihydroxycholesterol (7α,25-OHC) is a potent and selective agonist, as well as an endogenous ligand, of the orphan GPCR receptor EBI2 (GPR183). It serves as a chemokine directing the migration of B cells, T cells, and dendritic cells and exhibits high potency in activating EBI2 (EC50=140 pM; Kd=450 pM) [1][2].

N-Hydroxypipecolic acid (NHP) is a plant metabolite and a systemic acquired resistance (SAR) regulator.

Corticosterone (Kendall's compound B) is an adrenocortical steroid with salocorticoid and glucocorticoid activity that is orally active. Corticosterone is involved in the regulation of energy, immune responses, and stress responses in the body.

Penicillamine (Artamine), possessing antineoplastic properties, induces apoptosis by a p53-mediated mechanism and inhibits angiogenesis by chelating with copper, a cofactor for angiogenesis. Artamine is a beta dimethyl analog of the amino acid cysteine. As a degradation product of penicillin antibiotics, Artamine chelates with heavy metals and increases their urinary excretion.

Lipopolysaccharides (LPS), derived from Escherichia coli O55:B5, are essential components of the outer membrane of Gram-negative bacteria. Composed of lipid A, a core oligosaccharide, and an O-specific polysaccharide, LPS exhibits strong immunogenicity. It activates immune cells via the TLR4 receptor, induces chemotactic cell migration and cytokine secretion, and helps maintain the integrity of the bacterial outer membrane, protecting against bile salts and lipid-based antibiotics. LPS is commonly used to establish inflammatory models, including arthritis, chronic obstructive pulmonary disease (COPD), acute respiratory distress syndrome (ARDS), and gastrointestinal disease models.

Astragaloside IV (AS-IV), an active component isolated from Astragalus membranaceus, suppresses the activation of ERK1/2 and JNK, and downregulates matrix metalloproteases (MMP)-2, (MMP)-9 in MDA-MB-231 breast cancer cells. Astragaloside IV is a bioactive saponin first isolated from the dried plant roots of the genus Astragalus, which is used in traditional Chinese medicine.1 It dose-dependently inhibits human adenovirus type 3 (HAdV-3) in A549 cells (IC50 = 23 μM; LC50 = 865 μM).It inhibits replication of HAdV-3 and decreases HAdV-3-induced apoptosis. It has diverse protective effects for the cardiovascular, immune, digestive, and nervous systems. In particular, it reduces myocardial infarct size in dogs when administered prior to coronary ligation and reduces reperfusion arrhythmias in isolated rat hearts.

Chloroquine is a Toll-like receptor inhibitor that inhibits autophagy. Chloroquine has anti-malarial and anti-inflammatory activity and is widely used in the treatment of malaria and rheumatoid arthritis. Chloroquine also has anti-SARS-CoV-2 (COVID-19) activity and anti-HIV-1 activity.

Taurine (2-Aminoethanesulfonic acid) is an organic acid widely distributed in animal tissues and is one of the constituents of bile acids. Taurine is involved in a number of processes related to energy expenditure and muscle function, and can treat fatigue and muscles as well as improve immune function.

Chloroquine phosphate (Aralen phosphate) is an aminoquinoline antimalarial and also is widely used as an autophagy inhibitor. Chloroquine also is an inhibitor of toll-like receptors (TLRs).

Retinol (Alphalin) and derivatives of retinol that play an essential role in metabolic functioning of the retina, the growth of and differentiation of epithelial tissue, the growth of bone, reproduction, and the immune response. Dietary vitamin A is derived from a variety of CAROTENOIDS found in plants. It is enriched in the liver, egg yolks, and the fat component of dairy products.

Laminaran is a β-1,3-glucan isolated from brown algae, often serving as a typical ligand for Dectin-1. It possesses anti-cancer, immune-modulating, and radiation-protective properties. Laminaran can be catalyzed by glucanase. In in vitro and in vivo experiments, Laminaran has demonstrated anti-tumor activity and may be used for severe cancers.

Hydrocortisone (Cortisol) is a glucocorticoid hormone secreted by the adrenocortex. Hydrocortisone agonizes the glucocorticoid receptor, which promotes proteolytic metabolism, gluconeogenesis, capillary wall stabilization, and renal calcium excretion, as well as suppressing immune and inflammatory responses.

Apigenin (NSC 83244) is an aromatic oil extracted from the flowers or leaves of the daisy-like plants. Extracts, oils and teas made from chamomile are used for its soothing qualities as a sedative, mild analgesic and sleep medication. Apigenin has not been implicated in causing serum enzyme elevations or clinically apparent liver injury.

Acetyl-L-carnitine hydrochloride (Acetyl L-carnitine hydrochloride) is a nutritional supplement composed of the hydrochloride salt form of the acetylated form of the endogenously produced L-carnitine, with potential neuroprotective, cognitive-enhancing, anti-depressive and immunomodulating activities. It may also relieve peripheral neuropathy induced by chemotherapy, diabetes or other diseases. In addition, acetyl-L-carnitine may modulate the immune response by increasing T-lymphocytes maturation and may downregulate pro-inflammatory cytokines in response to viruses, such as SARS-CoV-2. It may also disrupt the ACE2 signaling pathway and inhibit the production of reactive oxygen species (ROS).

Notoginsenoside R1 (Sanchinoside R1) has been shown to exhibit antioxidant, antiapoptotic, anti-inflammatory, and immune-stimulatory properties.

Methyl hexadecanoate is an acaricidal compound found in green walnut hulls with anti-inflammatory and antifibrotic properties, inhibiting phagocytic activity and immune response.

trans-Urocanic Acid ((E)-Urocanic acid), a compound predominantly distributed in the hippocampus and prefrontal cortex, is an isomer of cis-UCA, an epidermal UV-protectant, which enhances the stability of tenofovir eplerenomide in long-acting HIV applications. trans-Urocanic acid potently modulates immune trans-urocanic acid effectively modulates immune function, inhibits human natural killer cell activity in vitro, and can be used in Alzheimer's disease research.

L-Allothreonine (L-allo-Threonine) is an essential amino acid in humans. L-Allothreonine is abundant in human plasma, particularly in newborns. Severe deficiency of threonine causes neurological dysfunction and lameness in experimental animals. L-Allothreonine is an immunostimulant which promotes the growth of thymus gland. L-Allothreonine also can probably promote cell immune defense function. L-Allothreonine is highly concentrated in meat products, cottage cheese, and wheat germ.

3-Indoleacrylic acid is a metabolite of tryptophan produced by Peptostreptococcus species. 3-Indoleacrylic acid has a beneficial effect on intestinal epithelial barrier function and mitigates inflammatory responses by immune cells.