melanogenesis

Raspberry ketone glucoside, a natural compound found in raspberry fruit, exhibits prolonged inhibition of melanogenesis and various melanogenic factors following its degradation in the skin.

1. Pectolinarigenin (Pectolinaringenin) exhibits hepatoprotective activity mainly via SOD antioxidant mechanism. 2. Pectolinarigenin possesses anti-inflammatory activity and that they may inhibit eicosanoid formation in inflammatory lesions.

Nonapeptide-1 (Melanostatine™ 5) can inhibit the synthesis of melanin, which makes it of interest for treating certain skin conditions.

"Methyl 4-hydroxycinnamate is an esterified derivative of p-coumaric acid isolated from the flowers of Trixis michuacana var. longifolia, exhibiting antibacterial and anti-melanogenesis properties."

N-Phenylthiourea (Phenylthiocarbamide) is a phenyl ring-containing organothiourea that acts as an EC 1.14.18.1 (tyrosinase) inhibitor, a diphenolase inhibitor, and a non-competitive inhibitor of the PvdP tyrosinase of Pseudomonas, which inhibits melanogenesis, and is able to be used in genetic taste testing.

1. 2,5-Dihydroxyacetophenone (Quinacetophenone) possess anti-anxiety, and neuroprotective qualities. 2. 2,5-Dihydroxyacetophenone (Quinacetophenone) reatment can induce a sustained activation of JNK, ERK1/2, and p38 MAPKs, it also can potentiate the pro-apoptotic and anti-proliferative effects of bortezomib in U266 cells. 3. 2,5-Dihydroxyacetophenone (Quinacetophenone) has anti-inflammatory activity in activated macrophages, raising the possibility that this compound has a therapeutic potential for inflammatory conditions. 4. 2,5-Dihydroxyacetophenone (Quinacetophenone) is an uncompetitive inhibitor of murine tyrosinase (K(I) 0.28mm), it strongly inhibits both melanogenesis and cellular tyrosinase activity in vitro in 3-isobutyl-1-methylxanthin-stimulated B16 mouse melanoma cells or in vivo in zebrafish and mouse models.

Trans-caffeic acid (3,4-Dihydroxybenzeneacrylic acid) can be used as a highly sensitive fluorescent probe for the detection of laccase in food and can also stimulate the growth of germ tissue.

(±)-Eriodictyol（Dihydroluteolin） is the racemate, while Eriodictyol contains only the (+)-Eriodictyol configuration. (±)-Huazhongilexone is a naturally occurring flavonoid with a variety of biological activities including antioxidant, anti-inflammatory, and anticancer activities, and is a potent inhibitor of melanogenesis, and is also used as a food additive.

(+)-Pinanediol is a chiral terpene diol identified as (1S,2S,3R,5S)-(+)-Pinanediol, and it acts as a potent inducer of melanin biosynthesis. (+)-Pinanediol promotes pigmentation and nitric oxide (NO) production in S91 melanoma cells, suggesting its involvement in melanogenic signaling pathways and its utility as a bioactive compound in pigment cell biology research.

ARP 101 is an effective selective matrix metalloproteinase-2 (MMP-2) inhibitor with anti-cancer activity. It induces the inhibition of HCMV through non-classical chelate 1 (SQSTM1)/p62-Keap1-Nrf2 pathways and phosphorylation of the C-terminal domain of p62, regulating autophagy and inhibiting melanogenesis.

p-Decylaminophenol is a melanogenesis inhibitor.

Loganin (Loganoside), an iridoid glucoside, has been reported to be an inhibitor of Cox-1 and also noted to suppress TNF-α formation. This compound also has displayed potent free-radical-scavenging activity and inhibitory effects on melanogenesis.

MHY908, a novel inhibitor of melanogenesis, potently inhibits mushroom tyrosinase activity in a dose-dependent manner.

Noroxyhydrastinine exhibits potent melanogenesis-inhibitory activities, it inhibits melanogenesis, at least in part, by inhibiting the expression of protein levels of tyrosinase, TRP-1, and TRP-2 in α-MSH-stimulated B16 melanoma cells.

KL044 is a cryptochrome 1 (CRY1) activator that prolongs circadian rhythms and inhibits PER2 activity. KL044 inhibits melanogenesis by inhibiting the cAMP/PKA/CREB pathway.

L-Topaquinone is a metabolite of dopaquione, an important intermediate in melanogenesis.

Sesamol (1,3-Benzodioxol-5-ol) could decrease lung inflammation and lipopolysaccharide (LPS)-induced lung injury in rats. Sesamol ameliorates inflammatory and oxidative damage by upregulating AMPK activation and Nrf2 signaling and blocking the NF-κB and MAPK signaling pathways and inhibits melanin biosynthesis by down-regulating tyrosinase activity and melanin production via regulation of gene expression of melanogenesis-related proteins through modulation of MITF activity, which promotes phosphorylation of p38 and JNK in melan-a cells.

Saikosaponin B2 acts on HCV E2 and inhibits infection by several genotypic strains and prevents binding of serum-derived HCV onto hepatoma cells. Saikosaponin B2 (5 μM) induces differentiation of B16 melanoma cells, with potentiation of expressions of tyr

1. N-trans-Feruloyltyramine (Feruloyltyramine)(NTF) has hepatoprotective effect. 2. NTF has antioxidative activity against Aβ(1-42)-induced neuronal death. 3. NTF is likely to inhibit COX enzymes, thereby suppressing P-selectin expression on platelets, is a platelet aggregation inhibitor. 4. NTF inhibits melanogenesis in a dose-dependent manner, NTF induces downregulation of tyrosinase resulted in suppression of melanin biosynthesis in murine B16 melanoma cells.

Tyrosinase-IN-5 (compound 16c) is a potent tyrosinase inhibitor with an IC50 value of 0.02 μM, effectively suppressing melanogenesis and exhibiting minimal cellular toxicity [1].

1. Mulberroside has nephroprotective, hypoglycemic, and antidiabetic effects. 2. Mulberroside A is a glycosylated stilbene of oxyresveratrol; thus, the deglycosylation of Mulberroside A resulted in enhanced inhibition of melanogenesis. 3. Mulberroside A has anti-inflammatory antiapoptotic effects. by decreasing the expressions of tumor necrosis factor-α (TNF-α), interleukin (IL)-1β, and IL-6 and inhibiting the activation of NALP3, caspase-1, and nuclear factor-κB and the phosphorylation of extracellular signal-regulated protein kinases, the c-Jun N-terminal kinase, and p38.

1. 8-Gingerol has antioxidant activity. 2. 8-Gingerol has antimycobacterial activity. 3. 8-Gingerol could be used as an effective skin-whitening agent. 4. 8-Gingerol shows antipyretic and anti-inflammation characteristics. 5. 8-Gingerol seems to be effect

Tyrosinase (Polyphenol oxidase) is a key rate-limiting enzyme encoded by the TYR gene that controls melanin production and catalyzes tyrosine oxidation. It is mainly found in melanosomes and plays an important role in melanogenesis, plant secondary metabolism, wound healing and immune response.

6-O-Isobutyrylbritannilactone is a natural sesquiterpene and melanogenesis inhibitor capable of suppressing IBMX-induced melanogenesis in B16F10 cells. It modulates ERK, CREB, and PI3K/AKT pathways while reducing pigmentation in zebrafish embryos.