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Natural Products - DNA Regulation / Transcription
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Items 47 of 47
ALX-270-209 Revised 05-Apr-08
Etoposide
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SYNONYMS 4-Desmethylepipodophyllotoxin 9-(4,6-O-ethylidene)-β-D-glucopyranoside
VP-16-213
PRODUCT LINE Natural Products / Antibiotics
PRODUCT CATEGORY Natural Products - Topoisomerase Inhibitors
Ordering Information
Product Numbers: Format: Size: Unit Price: Quantity: Add To Cart
ALX-270-209-M025   25 mg 30.00 USD Add To Cart
ALX-270-209-M100   100 mg 65.00 USD Add To Cart
ALX-270-209-M500   500 mg 260.00 USD Add To Cart
Product Specification
FORMULA: C29H32O13
MW: 588.6
CAS NUMBER: 33419-42-0
MERCK INDEX: 14: 3886
RTECS: KC0190000
SOURCE/HOST: Semisynthetic derivative of podophyllotoxin.
PURITY: ≥99%
APPEARANCE: White to off-white powder.
SOLUBILITY: Soluble in DMSO, dimethyl formamide, ethyl ether or chloroform:methanol (1:1); slightly soluble in methanol or acetone; insoluble in water.
SHIPPING: AMBIENT
LONG TERM STORAGE: +20°C
USE/STABILITY: Store solutions in DMSO at 4°C. For long term storage prepare aliquots and store at -20°C.
HANDLING: Protect from light and moisture.
HAZARD: MAY BE CARCINOGENIC. TOXIC.

Product Description
Antitumor reagent. Topoisomerase II inhibitor. Induces apoptosis by FasL. Activates p53 resulting in upregulated expression of TRAIL-R2 (DR5) and Bak to overcome TRAIL resistance in Bax-deficient human colon carcinoma cancer cells.
Product Specific Literature References
The podophyllotoxin derivatives VP16-213 and VM26: B.F. Issell; Cancer Chemother. Pharmacol. 7, 73 (1982) Abstract
Etoposide: four decades of development of a topoisomerase II inhibitor: K.R. Hande; Eur. J. Cancer 34, 1514 (1998) Abstract
Etoposide sensitivity of human prostatic cancer cell lines PC-3, DU 145 and LNCaP: M. Salido, et al.; Histol. Histopathol. 14, 125 (1999) Abstract
A systematic review of the role of etoposide and cisplatin in the chemotherapy of small cell lung cancer with methodology assessment and meta-analysis: C. Mascaux, et al.; Lung Cancer 30, 23 (2000) Abstract
Distinct pathways for stimulation of cytochrome c release by etoposide: J.D. Robertson, et al.; J. Biol. Chem. 275, 32438 (2000) Abstract; Full Text
Ordering of ceramide formation, caspase activation, and Bax/Bcl-2 expression during etoposide-induced apoptosis in C6 glioma cells: M. Sawada, et al.; Cell Death Differ. 7, 761 (2000) Abstract
Etoposide-induced apoptosis is not associated with the fas pathway in acute myeloblastic leukemia cells: T. Siitonen, et al.; Leuk. Res. 24, 281 (2000) Abstract
Early caspase activation in leukemic cells subject to etoposide-induced G2-M arrest: evidence of commitment to apoptosis rather than mitotic cell death: R.J. Sleiman & B.W. Stewart; Clin. Cancer Res. 6, 3756 (2000) Abstract; Full Text
Cell cycle phase specificity in the potentiation of etoposide-induced DNA damage and apoptosis by KN-62, an inhibitor of calcium-calmodulin- dependent enzymes: M. Aoyama, et al.; Biochem Pharmacol 61, 49 (2001) Abstract
Deacetylase activity associates with topoisomerase II and is necessary for etoposide-induced apoptosis: C.A. Johnson, et al.; J. Biol. Chem. 276, 4539 (2001) Abstract; Full Text
In vitro topo II-DNA complex accumulation and cytotoxicity of etoposide in leukaemic cells from patients with acute myelogenous and chronic lymphocytic leukaemia: Y. Wang, et al.; Leuk. Res. 25, 133 (2001) Abstract
Etoposide: discovery and medicinal chemistry: P. Meresse, et al.; Curr. Med. Chem. 11, 2443 (2004), Review Abstract
Etoposide, topoisomerase II and cancer: E.L. Baldwin & N. Osheroff; Curr. Med. Chem. Anticancer Agents 5, 363 (2005), Review Abstract
 
 
ALX-270-262 Revised 13-Feb-08
Ellagic acid . dihydrate
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SYNONYMS 4,4',5,5',6,6'-Hexahydroxydiphenic acid 2,6,2',6'-dilactone . 2H2O
PRODUCT LINE Natural Products / Antibiotics
PRODUCT CATEGORY Natural Products - Antioxidants
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Product Numbers: Format: Size: Unit Price: Quantity: Add To Cart
ALX-270-262-M100   100 mg 12.00 USD Add To Cart
Product Specification
FORMULA: C14H6O8 . 2H2O
MW: 302.2 . 36.0
CAS NUMBER: 476-66-4
MERCK INDEX: 14: 3547
RTECS: DJ2620000
SOURCE/HOST: Isolated from chestnut bark.
PURITY: ≥97%
APPEARANCE: Grey to green solid.
SOLUBILITY: Soluble in 1M sodium hydroxide (10mg/ml) or pyridine.
SHIPPING: AMBIENT
LONG TERM STORAGE: +4°C
HANDLING: Keep under inert gas. Protect from light.
HAZARD: IRRITANT.
IDENTITY: Determined by MS and NMR.

Product Description
Polyphenol antioxidant with antitumor properties. Inhibitor of topoisomerases. Inhibits VEGF-induced phosphorylation of VEGFR-2 and PDGF-induced phosphorylation of PDGFR. Induces apoptosis.
Product Specific Literature References
The dietary anticancer agent ellagic acid is a potent inhibitor of DNA topoisomerases in vitro: A. Constantinou, et al.; Nutr. Cancer 23, 121 (1995) Abstract
Novel inhibitors of 3-phosphoglycerate kinase: M.J. Hickey, et al.; Biochem. Soc. Trans. 23, 607S (1995) Abstract
Inhibitory actions of ellagic acid on growth and arylamide N-acetyltransferase activity in strains of Heliobacter pylori from peptic ulcer patients: J.G. Chung; Microbios 93, 115 (1998) Abstract
Polyphenols inhibit promotional phase of tumorigenesis: relevance of superoxide radicals: A. Kaul & K.L. Khanduja; Nutr. Cancer 32, 81 (1998) Abstract
Inhibition of eukaryote serine/threonine-specific protein kinases by piceatannol: B.H. Wang, et al.; Planta Med. 64, 195 (1998) Abstract
p53/p21 (WAF1CIP1) expression and its possible role in G1 arrest and apoptosis in ellagic acid treated cancer cells: B.A. Narayanan, et al.; Cancer Lett. 136, 215 (1999) Abstract
Combined inhibition of PDGF and VEGF receptors by ellagic acid, a dietary-derived phenolic compound: L. Labrecque, et al.; Carcinogenesis 26, 821 (2005) Abstract
Antioxidant and apoptosis-inducing activities of ellagic acid: D.H. Han, et al.; Anticancer Res. 26, 3601 (2006) Abstract
The efficacy of protective effects of tannic acid, gallic acid, ellagic acid, and propyl gallate against hydrogen peroxide-induced oxidative stress and DNA damages in IMR-90 cells: C.H. Chen, et al.; Mol. Nutr. Food Res. 51, 962 (2007) Abstract
Ellagic acid, a natural polyphenol protects rat peripheral blood lymphocytes against nicotine-induced cellular and DNA damage in vitro: with the comparison of N-acetylcysteine: A.R. Sudheer, et al.; Toxicology 230, 11 (2007) Abstract
 
 
ALX-270-418 Revised 16-Jun-08
Gallotannin
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SYNONYMS Tannic acid
PRODUCT LINE Natural Products / Antibiotics
PRODUCT CATEGORY Other Natural Products - DNA Regulation / Transcription
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ALX-270-418-G001   1 g 10.00 USD Add To Cart
Product Specification
FORMULA: C76H52O46
MW: 1701.2
CAS NUMBER: 1401-55-4
MERCK INDEX: 14: 9052
RTECS: WW5075000
SOURCE/HOST: Occurs in the bark and fruit of many plants, notably in the bark of the oak species, in sumac and myrobalan.
PURITY: >95%
APPEARANCE: Beige to light brown powder.
SOLUBILITY: Soluble in water, 100% ethanol, acetone or warm glycerol.
SHIPPING: AMBIENT
SHORT TERM STORAGE: +4°C
LONG TERM STORAGE: +4°C
HANDLING: Protect from light.
HAZARD: IRRITANT.

Product Description
Inhibitor of poly(ADP-ribose) glycohydrolase (PARG). Cytoprotective in oxidatively stressed cells. Inhibitor of endothelial nitric oxide synthase (eNOS; NOS III) and weak inhibitor of inducible (iNOS; NOS II) and neuronal nitric oxide synthase (nNOS; NOS I). Induces cyclooxygenase-2 (COX-2) expression. Free radical scavenger.
Product Specific Literature References
Inhibition of constitutive endothelial NO-synthase activity by tannin and quercetin: M. Chiesi & R. Schwaller; Biochem. Pharmacol. 49, 495 (1995) Abstract
The poly(ADP-ribose) glycohydrolase inhibitor gallotannin blocks oxidative astrocyte death: W. Ying, et al.; Neuroreport 11, 1385 (2000) Abstract
Green tea polyphenols and tannic acid act as potent inhibitors of phorbol ester-induced nitric oxide generation in rat hepatocytes independent of their antioxidant properties: R.C. Srivastava, et al.; Cancer Lett. 153, 1 (2000) Abstract
Inhibition of poly(ADP-ribose) glycohydrolase by gallotannin selectively up-regulates expression of proinflammatory genes: E. Rapizzi, et al.; Mol. Pharmacol. 66, 890 (2004) Abstract
Tannic acid in plant dust causes airway obstruction: D. Taubert, et al.; Thorax 60, 789 (2005) Abstract
Prominent free radicals scavenging activity of tannic acid in lead-induced oxidative stress in experimental mice: I.H. El-Sayed, et al.; Toxicol. Ind. Health 22, 157 (2006) Abstract
The efficacy of protective effects of tannic acid, gallic acid, ellagic acid, and propyl gallate against hydrogen peroxide-induced oxidative stress and DNA damages in IMR-90 cells: C.H. Chen, et al.; Mol. Nutr. Food Res. 51, 962 (2007) Abstract
 
 
ALX-350-004 Revised 08-Apr-08
Thapsigargin
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PRODUCT LINE Natural Products / Antibiotics
PRODUCT CATEGORY Natural Products - Other Tumor Promoters
Ordering Information
Product Numbers: Format: Size: Unit Price: Quantity: Add To Cart
ALX-350-004-M001   1 mg 50.00 USD Add To Cart
ALX-350-004-M005   5 mg 200.00 USD Add To Cart
ALX-350-004-M010   10 mg 350.00 USD Add To Cart
ALX-350-004-M025   25 mg 690.00 USD Add To Cart
Product Specification
FORMULA: C34H50O12
MW: 650.8
CAS NUMBER: 67526-95-8
MERCK INDEX: 14: 9272
PURITY: ≥95% (HPLC)
APPEARANCE: Clear colorless film.
SOLUBILITY: Soluble in DMSO or 100% ethanol.
SHIPPING: AMBIENT
LONG TERM STORAGE: -20°C
HANDLING: Protect from light and oxygen.
HAZARD: HIGHLY IRRITANT. HARMFUL.

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Product Description
Cell permeable tumor promoter by specific inhibition of the (sarco)endoplasmatic reticulum Ca2+-ATPase (SERCA). Inhibition of SERCA reveals a significant change in intracellular Ca2+ homeostasis and pH regulation in tumor cells. Does not increase inositol phosphates. Shows no effect on protein kinase C (PKC). Increases Ca2+-dependent Na+ influx in human platelets in a dose-dependent manner. Induces apoptosis. Stimulates nitric oxide (NO) production, contributing to hepatocyte apoptosis.
Product Specific Literature References
Brefeldin A, thapsigargin, and AIF4- stimulate the accumulation of GRP78 mRNA in a cycloheximide dependent manner, whilst induction by hypoxia is independent of protein synthesis: B.D. Price, et al.; J. Cell. Physiol. 152, 545 (1992) Abstract
Thapsigargin, a Ca(2+)-ATPase inhibitor, depletes the intracellular Ca2+ pool and induces apoptosis in human hepatoma cells: A. Tsukamoto & Y. Kaneko; Cell Biol. Int. 17, 969 (1993) Abstract
The role of calcium, pH, and cell proliferation in the programmed (apoptotic) death of androgen-independent prostatic cancer cells induced by thapsigargin: Y. Furuya, et al.; Cancer Res. 54, 6167 (1994) Abstract
Intracellular Ca2+ signals activate apoptosis in thymocytes: studies using the Ca(2+)-ATPase inhibitor thapsigargin: S. Jiang, et al.; Exp. Cell Res. 212, 84 (1994) Abstract
Role of EGR-1 in thapsigargin-inducible apoptosis in the melanoma cell line A375-C6: S. Muthukkumar, et al.; Mol. Cell. Biol. 15, 6262 (1995) Abstract; Full Text
Baculovirus p35 and Z-VAD-fmk inhibit thapsigargin-induced apoptosis of breast cancer cells: X.M. Qi, et al.; Oncogene 15, 1207 (1997) Abstract
Signal transduction of thapsigargin-induced apoptosis in osteoblast: H.J. Chae, et al.; Bone 25, 453 (1999) Abstract
Nitric oxide is involved in apoptosis induced by thapsigargin in rat mesangial cells: A.M. Rodriguez-Lopez, et al.; Cell Physiol. Biochem. 9, 285 (1999) Abstract
Thapsigargin induces apoptosis in cultured human aortic smooth muscle cells: C. Peiro, et al.; J. Cardiovasc. Pharmacol. 36, 676 (2000) Abstract
Thapsigargin induces a calmodulin/calcineurin-dependent apoptotic cascade responsible for the death of prostatic cancer cells: B. Tombal, et al.; Prostate 43, 303 (2000) Abstract
Changes in intracellular Ca2+ and pH in response to thapsigargin in human glioblastoma cells and normal astrocytes: G.G. Kovacs, et al.; Am. J. Physiol. Cell. Physiol. 289, C361 (2005) Abstract
Thapsigargin, a selective inhibitor of sarco-endoplasmic reticulum Ca2+ -ATPases, modulates nitric oxide production and cell death of primary rat hepatocytes in culture: N.K. Canova, et al.; Cell Biol. Toxicol. 23, 337 (2007) Abstract
General Information
BACKGROUND/TECHNICAL INFORMATION Dissolving of 0.65mg Thapsigargin in 1ml gives a stock solution of 1mM.
General Literature References
Role of Ca2(+)-ATPases in regulation of cellular Ca2+ signalling, as studied with the selective microsomal Ca2(+)-ATPase inhibitor, thapsigargin: O. Thastrup; Agents Actions 29, 8 (1990), (Review) Abstract
Thapsigargin, a high affinity and global inhibitor of intracellular Ca2+ transport ATPases: G. Inesi and Y. Sagara; Arch. Biochem. Biophys. 298, 313 (1992), (Review) Abstract
Use of thapsigargin to study Ca2+ homeostasis in cardiac cells: T.B. Rogers, et al.; Biosci. Rep. 15, 341 (1995), (Review) Abstract
The sarcoplasmic reticulum Ca2+ pump: inhibition by thapsigargin and enhancement by adenovirus-mediated gene transfer: G. Inesi, et al.; Ann. NY Acad. Sci. 853, 195 (1998), (Review) Abstract; Full Text
A tool coming of age: thapsigargin as an inhibitor of sarco-endoplasmic reticulum Ca(2+)-ATPases: M. Treiman, et al.; TIPS 19, 131 (1998), (Review) Abstract
 
 
ALX-350-006 Revised 05-Apr-08
Genistein (synthetic)
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SYNONYMS 4',5,7-Trihydroxyisoflavone
PRODUCT LINE Natural Products / Antibiotics
PRODUCT CATEGORY Natural Products - Protein Kinase Inhibitors
Ordering Information
Product Numbers: Format: Size: Unit Price: Quantity: Add To Cart
ALX-350-006-M010   10 mg 25.00 USD Add To Cart
ALX-350-006-M025   25 mg 50.00 USD Add To Cart
ALX-350-006-M050   50 mg 90.00 USD Add To Cart
ALX-350-006-M100   100 mg 150.00 USD Add To Cart
ALX-350-006-G001   1 g 480.00 USD Add To Cart
Product Specification
FORMULA: C15H10O5
MW: 270.2
CAS NUMBER: 446-72-0
MERCK INDEX: 14: 4391
RTECS: NR2392000
SOURCE/HOST: Synthetic.
PURITY: ≥99% (HPLC)
APPEARANCE: White to yellow crystalline powder.
SOLUBILITY: Soluble in DMSO, 100% ethanol or dilute aqueous base; insoluble in water.
SHIPPING: AMBIENT
LONG TERM STORAGE: +4°C
HANDLING: Protect from light.
HAZARD: MAY BE CARCINOGENIC. HARMFUL.

Product Description
Tyrosine protein kinase inhibitor. Inhibits phosphorylation of EGFR kinase. Inhibits tumor cell proliferation and induces tumor cell differentiation. Inhibits topoisomerase II activity in vivo. Produces cell cycle arrest and apoptosis. Direct inhibitor of insulin-induced glucose uptake in adipocytes (IC50=20µM).
Product Specific Literature References
Genistein, a specific inhibitor of tyrosine-specific protein kinases: T. Akiyama, et al.; J. Biol. Chem. 262, 5592 (1987) Abstract; Full Text
Erbstatin blocks platelet activating factor-induced protein-tyrosine phosphorylation, polyphosphoinositide hydrolysis, protein kinase C activation, serotonin secretion and aggregation of rabbit platelets: H. Salari, et al.; FEBS Lett. 263, 104 (1990) Abstract
Mechanisms of cancer chemoprevention by soy isoflavone genistein: F.H. Sarkar & Y. Li; Cancer Metastasis Rev. 21, 265 (2002) Abstract
Soy isoflavone phyto-pharmaceuticals in interleukin-6 affections. Multi-purpose nutraceuticals at the crossroad of hormone replacement, anti-cancer and anti-inflammatory therapy: N. Dijsselbloem, et al.; Biochem. Pharmacol. 68, 1171 (2004), Review Abstract
Genistein affects testosterone secretion by Leydig cells in roosters (Gallus gallus domesticus): M. Opalka, et al.; Reprod. Biol. 4, 185 (2004) Abstract
Genistein directly inhibits GLUT4-mediated glucose uptake in 3T3-L1 adipocytes: M. Bazuine, et al.; BBRC 325, 511 (2005) Abstract
Decreased circulating levels of tumor necrosis factor-alpha in postmenopausal women during consumption of soy-containing isoflavones: Y. Huang, et al.; J. Clin. Endocrinol. Metab. 90, 3956 (2005) Abstract
Phytoestrogens and lipoproteins in women: C.N. Bairey Merz, et al.; J. Clin. Endocrinol. Metab. 91, 2209 (2006) Abstract
Clinical review: a critical evaluation of the role of soy protein and isoflavone supplementation in the control of plasma cholesterol concentrations: A. Dewell, et al.; J. Clin. Endocrinol. Metab. 91, 772 (2006), Review Abstract
The role of genistein and synthetic derivatives of isoflavone in cancer prevention and therapy: F.H. Sarkar, et al.; Mini Rev. Med. Chem. 6, 401 (2006), Review Abstract
 
 
ALX-350-015 Revised 02-Dec-08
(S)-(+)-Camptothecin
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PRODUCT LINE Natural Products / Antibiotics
PRODUCT CATEGORY Natural Products - Topoisomerase Inhibitors
Ordering Information
Product Numbers: Format: Size: Unit Price: Quantity: Add To Cart
ALX-350-015-M050   50 mg 40.00 USD Add To Cart
ALX-350-015-M250   250 mg 150.00 USD Add To Cart
ALX-350-015-G001   1 g 295.00 USD Add To Cart
Product Specification
FORMULA: C20H16N2O4
MW: 348.4
CAS NUMBER: 7689-03-4
MERCK INDEX: 14: 1735
RTECS: UQ0492000
SOURCE/HOST: Isolated from Mappia foetida Miers (Nothapodytes foetida (Wt.) Sleumer).
PURITY: ≥98% (HPLC)
APPEARANCE: Pale yellow powder.
SOLUBILITY: Soluble in DMSO (10mg/ml), methanol (40mg/ml) or 0.1N sodium hydroxide (50mg/ml).
SHIPPING: AMBIENT
LONG TERM STORAGE: +4°C
HANDLING: Protect from light and moisture. After reconstitution, prepare aliquots and store at -20°C.
HAZARD: TOXIC.

Product Description
Potent antitumor agent. Inhibitor of DNA-topoisomerase I. Activates p53 resulting in upregulated expression of TRAIL-R2 (DR5) and Bak to overcome TRAIL resistance in Bax-deficient human colon carcinoma cells. Suppresses nitric oxide (NO) biosynthesis.
Product Specific Literature References
M.E. Wall, et al.; JACS 88, 3888 (1966)
The current status of camptothecin analogues as antitumor agents: W.J. Slichenmyer, et al.; J. Natl. Cancer Inst. 85, 271 (1993), (Review) Abstract
RNA synthesis inhibitors increase melatonin production in Y79 human retinoblastoma cells: J.L. Janavs, et al.; Mol. Brain Res. 23, 47 (1994) Abstract
Camptothecins: from bench research to hospital wards: M. Potmesil; Cancer Res. 54, 1431 (1994), (Review) Abstract
Forskolin and camptothecin induce a 30 kDa protein associated with melatonin production in Y79 human retinoblastoma cells: J.L. Janavs, et al.; J. Neurosci. 15, 298 (1995) Abstract
Differential stabilization of eukaryotic DNA topoisomerase I cleavable complexes by camptothecin derivatives: A. Tanizawa, et al.; Biochemistry 34, 7200 (1995) Abstract
The anti-cancer drug camptothecin inhibits elongation but stimulates initiation of RNA polymerase II transcription: M. Ljungman & P.C. Hanawalt; Carcinogenesis 17, 31 (1996) Abstract
The cell cycle effects of camptothecin: Z. Darzynkiewicz, et al.; Ann. N. Y. Acad. Sci. 803, 93 (1996) Abstract
Camptothecin-induced apoptosis in p53-null human leukemia HL60 cells and their isolated nuclei: effects of the protease inhibitors Z-VAD-fmk and dichloroisocoumarin suggest an involvement of both caspases and serine proteases: T. Shimizu & Y. Pommier; Leukemia 11, 1238 (1997) Abstract
Camptothecin and taxol: discovery to clinic: M.E. Wall; Med. Res. Rev. 18, 299 (1998), Review Abstract
Camptothecin suppresses nitric oxide biosynthesis in RAW 264.7 macrophages: W.F. Chiou, et al.; Life Sci. 69, 625 (2001) Abstract
Reversal of multidrug resistance-associated protein-mediated daunorubicin resistance by camptothecin: D. Chauvier, et al.; J. Pharm. Sci. 91, 1765 (2002) Abstract
Camptothecin and taxol: historic achievements in natural products research: N.H. Oberlies & D.J. Kroll; J. Nat. Prod. 67, 129 (2004), Review Abstract
Camptothecin and its analogues: a review on their chemotherapeutic potential: D. Sriram, et al.; Nat. Prod. Res. 19, 393 (2005), Review Abstract
The effects of camptothecin on RNA polymerase II transcription: roles of DNA topoisomerase I:: G. Capranico, et al.; Biochimie 89, 482 (2007) Abstract
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ALX-350-016 Revised 31-Jul-08
(+)-Aphidicolin
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PRODUCT LINE Natural Products / Antibiotics
PRODUCT CATEGORY Natural Products for Cell Cycle Research
Ordering Information
Product Numbers: Format: Size: Unit Price: Quantity: Add To Cart
ALX-350-016-M001   1 mg 65.00 USD Add To Cart
ALX-350-016-M005   5 mg 260.00 USD Add To Cart
ALX-350-016-M025   25 mg 890.00 USD Add To Cart
Product Specification
FORMULA: C20H34O4
MW: