p21

Naphthazarin (5,8-Dihydroxy-1,4-naphthoquinone) is effective by various cellular mechanisms including oxidative stress, activation of mitochondrial apoptosis-inducing factor (AIF), depolymerization of microtubules, interference with lysosomal function and p53-dependent p21 activation. It triggers apoptosis and has anti-tumor effects

Cristacarpin exhibits moderate but selective activity towards DNA repair-deficient yeast mutants. It promotes endoplasmic reticulum (ER) stress, leading to sub-lethal reactive oxygen species (ROS) generation and which eventually terminates by triggering s

Theaflavin 3,3'-digallate, a major polyphenol found in black tea, is an inducer of oxidative stress which has anti-inflammatory and cancer chemopreventive actions, it reduces tumor angiogenesis by downregulating HIF-1αand VEGF.

5-Aminosalicylic Acid (5-ASA) is an anti-inflammatory agent, structurally related to the SALICYLATES, which is active in INFLAMMATORY BOWEL DISEASE. It is considered to be the active moiety of SULPHASALAZINE.

β-Carotene (Provitamin A) is a naturally-occurring retinol (vitamin A) precursor obtained from certain fruits and vegetables with potential antineoplastic and chemopreventive activities. As an anti-oxidant, beta carotene inhibits free-radical damage to DNA.

Perillyl Alcohol is a naturally occurring monoterpene related to limonene with antineoplastic activity. Perillyl alcohol (Isocarveol) inhibits farnesyl transferase and geranylgeranyl transferase, thereby preventing post-translational protein farnesylation and isoprenylation and activation of oncoproteins such as p21-ras, and arresting tumor cells in the G1 phase of the cell cycle.

Ailanthone (AIL) is a natural compound derived from the tree Ailanthus altissima and has anti-hepatocellular carcinoma (HCC) properties. It can induce G0 G1 phase cell cycle arrest by downregulating the expression of cyclins and CDKs, while upregulating the expression of p21 and p27. Additionally, Ailanthone is a potent androgen receptor (AR) inhibitor, capable of inhibiting both the full-length androgen receptor (IC50: 69 nM) and constitutively active splice variants (IC50: 309 nM).

Sterigmatocystine is an inhibitor of G1 Phase and DNA synthesis and is used to inhibit p21 activity. Sterigmatocystine is a precursor of aflatoxins and a mycotoxin produced by common mold strains from Aspergillus versicolor.

Erucin （1-isothiocyanato-4-methylsulfanylbutane） is a dietary isothiocyanate produced by enzymatic hydrolysis of glucoErucin with potential cancer preventive effects, involved in apoptosis and cell cycle blockade through PARP-1 cleavage, p53 and p21，Cyp450, quinone reductase (QR), glutatione transferase (GST) and other pathways.

Hygrolidin is a macrocyclic lactone originally isolated from S. hygroscopicus. It inhibits proliferation of a variety of cancer cell lines, including DLD-1 colon cancer, LNCaP prostate cancer, and K562 leukemia cells (IC50s = 2.9, 5.2, and 33 ng ml, respectively). Hygrolidin induces the expression and levels of p21 in DLD-1 cells, but not WI-38 fibroblasts, and leads to cell accumulation in the G1 and S phases without inducing apoptosis. It has antiparasitic activity against T. cruzi, L. donovani, and T. b. brucei but also induces cytotoxicity in HepG2 cells (IC50s = 1.1, 72.5, 77, and 24.5 nM, respectively).

Cucurbitacin E is a natural product isolated from the climbing stem of Cucumic melo L. It significantly suppresses the activity of the cyclin B1 CDC2 complex.Cucurbitacin E has prevention of neurodegeneration, it has potent anti-proliferative, antineoplas

1. Schisandrol B (Besigomsin) may exert neuroprotective effects by attenuating the microglia-mediated neuroinflammatory response via inhibiting the TLR4-mediated NF-κB and MAPKs signaling pathways. 2. Schisandrol B has anti-inflammatory property, potentially result from the inhibition of COX-2, iNOS, IL-6, TNF-α and NO through the down-regulation of RIP2 and NF-κB activation. 3. Schisandrol B induces marked protective effects against hepatic and renal injury induced by CCl(4) exposure through differential regulation of the MAPK signal transduction pathway. 4. Schisandrol B significantly inhibits cell proliferation in a dose-dependent manner, due to cell cycle arrest in the G1 phase with the downregulation of cyclin D1 expression and Retinoblastoma (RB) phosphorylation.

Neochamaejasmin A can inhibit cellular (3)H-thymidine incorporation (IC 50 12.5 microg mL) and subsequent proliferation of human prostate cancer LNCaP cells, it blocks cell cycle progression at the G1 phase by activating the p21 protein and ultimately pro

Aaptamine functions as a proteasome inhibitor, it activates p21 promoter in a p53-independent manner.

Pinoresinol ((+)-Pinoresinol) has antiinflammatory, hepatoprotective, and fungicidal activities, it can protect pial microcirculation from I-reperfusion injury, to increase nitric oxide release and to reduce oxidative stress preserving pial blood flow distribution; it may exert pharmacologically interesting effects via modulation of the insulin-like signalling pathway in C.elegans. Pinoresinol causes an upregulation of the CDK inhibitor p21(WAF1 Cip1) both at mRNA and protein levels, inhibits NF-kappaB and activating protein 1 (AP-1).

4beta-Hydroxywithanolide E(4bHWE) can inhibit the growth of colon cancer monolayer and spheroid cultures, it assert its anti-tumor activity in carcinogenic progression and develop into a dietary chemopreventive agent, it affects alternative splicing by mo

(±)-Boehmenan shows potent protein-tyrosine phosphatase 1B (PTP1B) inhibitory activity in vitro with the IC(50) values of 43.5 uM, it inhibits PTP1B activity in a competitive manner. Boehmenan exhibits the potent cytotoxic effects against many cancer cell

VHD-valtrate has anticancer effects against human ovarian cancer cells in vitro and in vivo, it is a potential therapeutic agent for ovarian cancer, providing a basis for development of the compound as a novel chemotherapeutic agent.

Kazinol A shows strong inhibition of arachidonic acid (AA)-induced platelet aggregation. It also exhibits potent inhibition with IC50 values ranging 0.6-164 M against XOD. Kazinol A may be a candidate for the development of effective anti-cancer drug on h

1. Lappaol F has antioxidant and antiaging properties, it may promote the C. elegans longevity and stress resistance through a JNK-1-DAF-16 cascade.
2. Lappaol F has potential chemosensitizing activity, it may be candidates for developing novel adju

Myricanol can elicit growth inhibitory and cytotoxic effects on lung cancer cells, it can significantly decelerate tumor growth in vivo by inducing apoptosis.

DG 381B (11-Deoxyglycyrrhetinic acid) has anti-inflammatory and potential anticancer activities, significantly inhibiting gastric cancer cell viability in a dose- and time-dependent manner. It induces apoptosis and G2 cell cycle arrest by upregulating p21 and downregulating cdc2 and cyclin B1 in gastric cancer cells.