Enzyme Modulators

Inhibitor of histone deacetylases

ATP-competitive inhibitor of Met and VEGFR2

Thromboxane A2 synthetase inhibitor

This peptide is phosphorylated by Janus kinase 2 (JAK2) and is an ideal substrate for use in kinase assays. The JAK family of kinases is essential for the signalling of a host of immune modulators in tumour, stromal, and immune cells where they are highly expressed. JAK family proteins mediate the signalling of the interferon (IFN), IL-6, and IL-2 families of cytokines.JAK kinases are associated with cytokine receptors. Cytokine binding to these receptors results in activation of JAK kinases and receptor phosphorylation. Phosphorylated cytokine receptors recruit STAT proteins, which are then phosphorylated by the activated JAK kinases. Phosphorylated STAT proteins form homo- and hetero-dimers that translocate into the nucleus and function as transcription factors.

Abiraterone is an anti-cancer drug that has been shown to be effective in treating prostate cancer. It works by blocking the production of testosterone by inhibiting androgen synthesis. Abiraterone does this by inhibiting CYP17A1, which converts cholesterol into pregnenolone, and then into progesterone and testosterone. Furthermore, it binds to the enzyme steroid 5-alpha reductase, which converts testosterone into dihydrotestosterone (DHT). Abiraterone is usually a last resort for patients who have stopped responding to other lines of hormone therapies, which is known as second-line therapy.

Inhibits proteosomes of class peptide epoxyketone; antineoplastic

HMG-CoA reductase inhibitor

Amino acids 651-660 of Poly(ADP-ribose) polymerase 1 (PARP1). PARP1 is a nuclear DNA repair enzyme that binds to DNA when damage is detected. PARP1 coordinates double and single strand break repair by first cleaving NAD+ into nicotinamide and ADP-ribose, and then synthesising poly-(ADP-ribose) (PAR) chains from ADP-ribose on target proteins (PARylation). PARylation of histone proteins mediates the relaxation of the chromatin and recruitment of DNA-break repair enzymes.PARP1 can also act as a transcriptional co-activator, modulating the expression of itself and many other genes by direct binding to or PARylation of enhancers and promoters. PARP1 is also involved in maintaining mtDNA.PARP1 belongs to the PARP family which has 7 known and 10 putative members. PARP1 accounts for >85% of the PARP activity in cellular systems.

Carbimazole is an imidazole antithyroid agent that is used to treat hyperthyroidism. It reduces the production of diiodotyrosine and thyroxine, as well as the uptake and concentration of inorganic iodine by the thyroid. Once it has been converted to methimazole, the thyroid peroxidase enzyme is inhibited from coupling and iodinating the tyrosine residues on thyroglobulin therefore lowering the production of the thyroid hormones T3 and T4.

Inhibitor of EGFR receptor

Short acting monoamine oxidase inhibitor

Inhibitor of histone deacetylase 3 (HDAC3) with IC50 in nanomolar range. BRD 9908 was shown to preserve the insulin-secreting pancreatic cells in nonobese diabetic mice. BRD 3308 supressed infiltration of mononuclear cells and prevented β-cell death in vivo as well as increased basal insulin secretion in vitro. Studies on HIV infection models showed that HDAC3 inhibition by BRD 3308 disrupts the HIV latency by increasing the gene expression from HIV promoter.

A potent inhibitor of phosphodiesterase type 9 (PDE9) tested in human and murine in vitro assays (IC50 values: 55 nM and 100 nM respectively). BAY 73-6691 induces long-term potentiation and improves memory in rodents. Has therapeutic potential for Alzheimer’s disease.

Celecoxib is a pyrazole derivative that acts as a selective COX-2 inhibitor. It has been shown to inhibit prostaglandin synthesis and promote apoptosis in human osteosarcoma cells. Celecoxib also inhibits tumor growth and inhibits angiogenesis in combination with paclitaxel, which is a chemotherapeutic agent. It is a nonsteroidal anti-inflammatory drug, thus a beneficial treatment in conditions such as rheumatoid arthritis, osteoarthritis, musculoskeletal pain, acute pain and juvenile rheumatoid arthritis. Furthermore it can be utilized in patients with familial adenomatous polyposis to reduce colon and rectal polyps.
Celecoxib is part of our Bio-X ™ Range. These products are aimed at life science researchers who need high quality ready to use products for assay development, screening or other R&D work. With a solubility datasheet and convenient vials, all of our Bio-X ™ products are in stock across our global warehouses for rapid delivery and ease of use.

Inhibitor of leucine-rich repeat kinase LRRK2Â

Inhibitor of human neutrophil elastase

Crizotinib is a drug that belongs to the group of tyrosine kinase inhibitors. It is used in the treatment of cancers, including non-small cell lung cancer, small cell lung cancer, and other types of solid tumours. Crizotinib inhibits the activity of the tyrosine kinase ALK or anaplastic lymphoma kinase, which is involved in many signalling pathways and biological processes. The inhibition of this enzyme leads to decreased energy metabolism, reduced mitochondrial membrane potential and increased susceptibility to apoptosis.

Capecitabine is a chemotherapeutic agent that is used in the treatment of various cancers such as gastrointestinal, breast and pancreatic. This drug is a nucleotide metabolic inhibitor and inhibits DNA synthesis and slows the growth of tumor tissue. It is a prodrug of Fluorouracil.

Selective c-Met kinase inhibitor

Aliskiren is a drug that belongs to the group of angiotensin receptor blockers. It is a renin inhibitor that is used for the treatment of hypertension, congestive heart failure, and renal impairment. Aliskiren inhibits the action of angiotensin II by blocking the binding of this hormone to its receptors.

Class 1 PI3K enzyme inhibitor; anti-neoplastic

A potent inhibitor of histone deacetylases (HDACs) of class I and II with anti-tumoral activity. The compound blocks HDAC catalytic activity by chelating zinc ion in the enzyme’s active site. Extensively used in research as epigenetic modifier able to block cell growth and downregulate proliferation-associated factors. It has also been reported that trichostatin A induces apoptosis via a histone-modification independent mechanism in oral squamous cell carcinoma cell lines. Initially discovered as anti-fungal compound from Streptomyces hygroscopicus for the control of fungal infections caused by the genus Trichophyton.

Anti-inflammtory drug

Inhibitor of monoamine oxidase

Inhibitor of topoisomerase TOP2

Topoisomerase II and DNA helicase inhibitor

Competitive, reversible inhibitor of α-glucosidases used for the control of postprandial hyperglycaemia in patients with type 2 diabetes mellitus. It inhibits digestive enzymes with α-glucosidase activity, which breakdown complex sugars to absorbable monosaccharides. It also reduces the levels of glycated haemoglobin (HbA1c).

Selective inhibitor of the transforming growth factor beta receptor TGFβ1. RepSox can replace Sox, a transcriptional factor required for cell self-renewal, in reprogramming of adult cells to induced pluripotent stem cells (iPSCs). In the cloned interspecies embryos, RepSox induced expression of pluripotency regulatory genes Oct4 and Nanog, improved viability and developmental potential of embryos in the pre-implantation stage.

Inhibitor of p38 MAPK kinase

Inhibitor of FLT3 receptor tyrosine kinases; anti-neoplastic

Phosphodiesterase 5 inhibitor; anti-impotence drug

Inhibitor of ecto-ATPase which blocks the hydrolysis of nucleoside diphosphates and triphosphates in extracellular space. The compound inhibits NTPDase1, NTPDase 3, NTPDase 8 and NPP1and prolongs the effect of ATP on purinergic P2 receptors in environment with physiological concentrations of nucleotides. The compound has variable effectiveness as ecto-ATP inhibitor in mouse, rat, human and guineia pig tissues.

Etoposide is a cytotoxic drug used in cancer chemotherapy. It inhibits DNA replication through inhibition of DNA topoisomerase II, thus catalysing cell cycle arrest and apoptosis. 
Etoposide is part of our Bio-X ™ Range. These products are aimed at life science researchers who need high quality ready-to-use products for assay development, screening or other R&D work. With a solubility datasheet and convenient vials, all of our Bio-X ™ products are in stock across our global warehouses for rapid delivery and ease of use.

Proteosome inhibitor; antineoplastic

AKTide-2T is a 14-mer peptide which has the ability to bind to the substrate binding domain of Akt1 with a Ki of 12mM. AKt1 is part of the Akt kinase family which are serine/threonine kinase and it is ubiquitously expressed. AKt1 performs roles such as promoting endothelial neoplasms and through phosphorylating angiogenic substrates AKt1 plays a role in angiogenesis. AKT kinases as a whole perform functional roles in cell proliferation, cell growth, survival and intermediary metabolism.During peptide library screening, AKTide-2T was found to contain the optimal motif for successful binding to AKT. When phosphoamino acid analysis of AKTide-2T was carried out it was observed that although AKTide-2T contained two potential AKT phosphorylation sites: serine or threonine, AKT only phosphorylated the serine site. Furthermore it was found that AKTide-2T exhibits properties of being a competitive inhibitor for example it competitively inhibits histone H2B from being phosphorylated by AKT.

A selective inhibitor of MEK5 protein kinase with an IC50 value of 4.3 nM. Blocks transcriptional activation of myocyte-specific enhancer factor 2C (MEF2C). Inhibits phosphorylation of ERK5 protein kinase and thereby reverses inhibition of TNF signaling induced by fluid shear stress in endothelial cells. Induces apoptosis in FLT3-ITD cells.

Inhibitor of Rho-kinases

Reversible inhibitor of trypsin

VEGFR tyrosine kinase inhibitor

Inhibits non-receptor tyrosine kinase BTK; antineoplastic

Inhibits interaction between small GTPase Rab27a and its effector JFC1 (synaptotagmin-like protein1, Slp1). These proteins regulate neutrophil exocytosis, decrease neutrophil infiltration in liver and kidneys and reduce extracellular ROS production by NAPDH oxidase. Thus, nexinhibib20 suppresses systemic inflammation.

Sorafenib is a drug that belongs to the class of multikinase inhibitors. It inhibits a number of kinases, including the Mcl-1 protein, which is involved in apoptosis along with blocking picolinic acid (PA), an endogenous metabolite involved in apoptosis signal transduction. Sorafenib also binds to epidermal growth factor receptor (EGFR) on the surface of cancer cells, inhibiting the production of proteins that are required for angiogenesis, thus blocking the formation of new blood vessels. Sorafenib may also inhibit P-glycoprotein (Pgp) activity. Overall, these cytotoxic effects give Sorafenib anti-tumor properties, inhibiting angiogenesis and cellular transformation, which are the two main processes of tumor growth and metastasis. Sorafenib tosylate has been shown to be effective against a range of solid tumors such as breast, prostate and lung cancers and is also used for the treatment of metastatic colorectal cancer and renal cell carcinoma. A combination therapy group found that sorafenib was more effective when used with interferon alfa-2b for the treatment of advanced renal cell carcinoma. Sorafenib also has the potential for drug interactions with other drugs that are metabolized by cytochrome P450 enzymes.

Carmofur is an antineoplastic agent that is used to treat various cancers such as breast and colorectal cancer. This drug is a derivative of fluorouracil. Carmofur is an inhibitor of the human acid ceramidase, a lysosomal amidase involved in the development of cancer cells.

A specific inhibitor of Bone Morphogenetic Protein (BMP) type 1 receptors ALK2 and ALK3 (IC50  < 0.5 µM). Dorsomorphin analog that exclusively targets the BMP but not VEGF signaling. It is able to inhibit the BMP-induced Smad1/5/8 activation but not the p38/MAP kinase signaling or Activin A-induced Smad2 activation.