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Tin protoporphyrin IX dichloride

Heme oxygenase inhibitor CAS# 14325-05-4

Tin protoporphyrin IX dichloride

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Chemical structure

Tin protoporphyrin IX dichloride

3D structure

Chemical Properties of Tin protoporphyrin IX dichloride

Cas No. 14325-05-4 SDF Download SDF
PubChem ID 56972891 Appearance Powder
Formula C34H32Cl2N4O4Sn M.Wt 750.25
Type of Compound N/A Storage Desiccate at -20°C
Solubility Soluble to 25 mM in 1eq. NaOH and to 5 mM in DMSO
Chemical Name 3-[20-(2-carboxyethyl)-22,22-dichloro-10,15-bis(ethenyl)-5,9,14,19-tetramethyl-21,23,24,25-tetraza-22-stannahexacyclo[9.9.3.13,6.113,16.08,23.018,21]pentacosa-1,3(25),4,6,8,10,12,14,16(24),17,19-undecaen-4-yl]propanoic acid
SMILES CC1=C(C2=CC3=NC(=CC4=C(C(=C5N4[Sn](N2C1=CC6=NC(=C5)C(=C6C)CCC(=O)O)(Cl)Cl)CCC(=O)O)C)C(=C3C)C=C)C=C
Standard InChIKey HDGCWLZQBOZSGG-UHFFFAOYSA-J
Standard InChI InChI=1S/C34H34N4O4.2ClH.Sn/c1-7-21-17(3)25-13-26-19(5)23(9-11-33(39)40)31(37-26)16-32-24(10-12-34(41)42)20(6)28(38-32)15-30-22(8-2)18(4)27(36-30)14-29(21)35-25;;;/h7-8,13-16H,1-2,9-12H2,3-6H3,(H4,35,36,37,38,39,40,41,42);2*1H;/q;;;+4/p-4
General tips For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.
We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months.
Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it.
About Packaging 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial.
2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial.
3. Try to avoid loss or contamination during the experiment.
Shipping Condition Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request.

Biological Activity of Tin protoporphyrin IX dichloride

DescriptionA potent inhibitor of heme oxygenase. Prevents hyperbilirubinemia in neonates.

Tin protoporphyrin IX dichloride Dilution Calculator

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Preparing Stock Solutions of Tin protoporphyrin IX dichloride

1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 1.3329 mL 6.6644 mL 13.3289 mL 26.6578 mL 33.3222 mL
5 mM 0.2666 mL 1.3329 mL 2.6658 mL 5.3316 mL 6.6644 mL
10 mM 0.1333 mL 0.6664 mL 1.3329 mL 2.6658 mL 3.3322 mL
50 mM 0.0267 mL 0.1333 mL 0.2666 mL 0.5332 mL 0.6664 mL
100 mM 0.0133 mL 0.0666 mL 0.1333 mL 0.2666 mL 0.3332 mL
* Note: If you are in the process of experiment, it's necessary to make the dilution ratios of the samples. The dilution data above is only for reference. Normally, it's can get a better solubility within lower of Concentrations.

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References on Tin protoporphyrin IX dichloride

Leishmania donovani Exploits Macrophage Heme Oxygenase-1 To Neutralize Oxidative Burst and TLR Signaling-Dependent Host Defense.[Pubmed:30593539]

J Immunol. 2019 Feb 1;202(3):827-840.

Suppression of host oxidative burst is essential for survival of the intracellular parasite Leishmania donovani Screening of macrophage antioxidant enzymes during infection revealed marked upregulation of the heme-degrading enzyme, heme oxygenase-1 (HO-1). Moreover, HO-1-silenced RAW macrophages depicted increased superoxide production and decreased parasite survival. HO-1 induction decreased cellular heme content, thereby inhibiting the heme-dependent maturation of gp91phox, a catalytic component of major reactive oxygen species-producing enzyme NAD(P)H oxidase. Decreased gp91phox expression resulted in reduced stability of p22phox, another component of the catalytic center of NAD(P)H oxidase. Replenishing infected cells with exogenous heme reversed these effects and restored NAD(P)H oxidase activity. Persistent HO-1 expression at late hour of infection prompted us to investigate its effect on other host defense parameters, and inhibition study revealed a reciprocal relationship of HO-1 with host proinflammatory responses. Among all the HO-1-mediated heme degradation products (CO, Fe, and biliverdin), only CO documented potent anti-inflammatory effects. Quenching of CO during infection increased the production of disease-resolving cytokines IL-12 and TNF-alpha. Coimmunoprecipitation experiments revealed that CO inhibited the interaction of TLR4 with MyD88 and TIR domain-containing adapter-inducing IFN-beta, thereby dampening the activation of NF-kappaB and IFN regulatory factor 3-mediated production of proinflammatory cytokines. Administration of HO-1 inhibitor Tin protoporphyrin IX dichloride in infected BALB/c mice led to a decrease in liver and spleen parasite burden along with increased production of IL-12 and TNF-alpha. These results suggest that HO-1 on one hand inhibits reactive oxygen species generation and on the other hand downregulates host favorable cytokine responses, thereby facilitating intramacrophage parasite survival.

Zinc L-carnosine suppresses inflammatory responses in lipopolysaccharide-induced RAW 264.7 murine macrophages cell line via activation of Nrf2/HO-1 signaling pathway.[Pubmed:28697633]

Immunopharmacol Immunotoxicol. 2017 Oct;39(5):259-267.

CONTEXT: Zinc L-carnosine (ZnC) is a chelate of Zn and L-carnosine and is used clinically in the treatment of peptic ulcer. OBJECTIVE: In this study, we aim to investigate the involvement of heme oxygenase-1 (HO-1) in the anti-inflammatory effects of ZnC in lipopolysaccharide (LPS)-induced RAW 264.7 murine macrophages. MATERIALS AND METHODS: We used immunoblotting analysis to evaluate the involvement of HO-1 in the anti-inflammatory effects of ZnC and the signaling pathway involved was measured using Dual luciferase reporter assay. RESULTS: Results from immunoblotting analysis demonstrated that pretreatment of cells with ZnC enhanced the expression of HO-1 in RAW 264.7 cells. Pretreatment of cells with HO-1 inhibitor (Tin protoporphyrin IX dichloride) significantly attenuated the inhibitory effects of ZnC on nitric oxide (NO) production, inducible nitric oxide synthase (iNOS) expression and NF-kappaB activation in LPS-induced RAW 264.7 cells, suggesting that HO-1 play an important role in the suppression of inflammatory responses induced by ZnC. Furthermore, results from co-immunoprecipitation of Nrf2 and Keap1 and dual luciferase reporter assay showed that pretreatment of ZnC was able to activate the Nrf2 signaling pathway. Treatment of cells with p38 inhibitor (SB203580), c-Jun N-terminal kinase inhibitor (SP600125), and MEK 1/2 inhibitor (U0126) did not significantly suppress the induction of HO-1 by ZnC. Moreover, our present findings suggest that the effects of ZnC on NO production, HO-1 expression, and Nrf2 activation were attributed to its Zn subcomponent, but not l-carnosine. CONCLUSION: Pretreatment with ZnC was able to activate Nrf2/HO-1 signaling pathway, thus suppressing the expression of inflammatory mediators, such as NO and iNOS in LPS-induced RAW 264.7 cells.

Heme Oxygenase-1 Is Not Decreased in Preeclamptic Placenta and Does Not Negatively Regulate Placental Soluble fms-Like Tyrosine Kinase-1 or Soluble Endoglin Secretion.[Pubmed:26324507]

Hypertension. 2015 Nov;66(5):1073-81.

Elevated placental release of the antiangiogenic factors, soluble fms-like tyrosine kinase-1 (sFlt-1) and soluble endoglin (sENG), is central to the pathophysiology of preeclampsia. It is widely accepted that heme oxygenase-1 (HO-1) is decreased in preeclamptic placenta and negatively regulates sFlt-1 and sENG production. We set out to verify these contentions. There was no difference in HO-1 mRNA or protein levels in preterm preeclamptic placentas (n=17) compared with gestationally matched controls (n=27). In silico analysis of microarray studies did not identify decreased placental HO-1 expression in preeclamptic placenta. Silencing HO-1 in primary trophoblasts did not affect sFlt-1 protein secretion after 24 or 48 hours. Silencing nuclear factor (erythroid-derived 2)-like 2 (transcription factor that upregulates HO-1) in trophoblasts also did not affect sFlt-1 secretion. Administering Tin protoporphyrin IX dichloride (HO-1 inhibitor) or cobalt protoporphyrin (HO-1 inducer) into placental explants did not affect sFlt-1 or sENG secretion. Silencing HO-1 in 2 types of primary endothelial cells (human umbilical vein endothelial and uterine microvascular endothelial cells) significantly increased sFlt-1 secretion but not sENG secretion. However, HO-1 silencing selectively increased mRNA expression of sFlt-1 i13 (generically expressed sFlt-1 variant) but not of sFlt-1 e15a (sFlt-1 variant mainly expressed in placenta). Furthermore, adding Tin protoporphyrin IX dichloride decreased sFlt-1, whereas adding HO-1 inducers (cobalt protoporphyrin, dimethyl fumarate, and rosiglitazone) either had no effect or increased sFlt-1 or sENG secretion (these trends are opposite to what is expected). We conclude that HO-1 expression is not decreased in preeclamptic placenta and HO-1 does not negatively regulate placental sFlt-1 and sENG secretion in placental or endothelial cells.

Anti-inflammatory effects of Amomum compactum on RAW 264.7 cells via induction of heme oxygenase-1.[Pubmed:22553068]

Arch Pharm Res. 2012 Mar;35(4):739-46.

Amomum compactum is commonly used in Korean traditional medicine. In this study, we demonstrate that A. compactum ethanolic extract (ACEE) has anti-inflammatory effects in a lipopolysaccharide-induced RAW 264.7 cell model of inflammation. In this system, ACEE prominently inhibited the production of nitric oxide (NO), prostaglandin E(2) (PGE(2)), interleukin (IL)-6 and tumor necrosis factor (TNF)-alpha, and inhibited the protein expression of inducible nitric oxide synthase and cyclooxygenase-2. Furthermore, ACEE treatment inhibited the translocation of nuclear factor-kappaB (NF-kappaB) and the degradation of inhibitory factor-kappaB alpha, but enhanced the expression of heme oxygenase (HO)-1 and the nuclear translocation of nuclear factor-erythroid 2 (Nrf2). Treatment with Tin protoporphyrin IX dichloride (SnPP), a selective HO-1 inhibitor, reversed the ACEE-induced suppression of NO production, suggesting that the induction of HO-1 is involved in the suppression of NO, TNF-alpha, and IL-6 production by ACEE. Taken together, these results suggest that ACEE have anti-inflammatory effects occurring through HO-1 induction, which leads to suppression of the blocking NF-kappaB.

Protection against ozone-induced pulmonary inflammation and cell death by endotoxin pretreatment in mice: role of HO-1.[Pubmed:11203434]

Inhal Toxicol. 2000 Dec;12(12):1225-38.

Ozone is a ubiquitous air pollutant that can cause acute pulmonary inflammation and cell injury and may contribute to the exacerbation of chronic pulmonary diseases. The molecular mechanisms of ozone-induced cell injury, as well as protective mechanisms against ozone-injury, are not well understood. Since ozone is a reactive oxidant, and heme oxygenase-1 (HO-1) is an antioxidant enzyme induced by many oxidative stimuli, we hypothesized that HO-1 is one of the protective mechanisms against ozone-induced cell injury, as well as pulmonary inflammation. In the current study, C57Bl/6 mice were pretreated with a low level of endotoxin (lipopolysaccharide, LPS) (0.5 mg/kg) to induce HO-1, and 16 h later were exposed to 1 ppm ozone for 3 h. Endotoxin pretreatment caused a significant protection against ozone-induced pulmonary inflammation and cell injury in bronchoalveolar lavage (BAL) cells. The protection by endotoxin pretreatment against ozone-induced inflammation and necrosis in BAL cells was abolished by the cotreatment with a heme oxygenase inhibitor, Tin protoporphyrin IX dichloride (SnPP), suggesting that HO-1 is responsible for the protection against ozone-induced pulmonary inflammation and BAL cell necrosis. Therefore, since HO-1 is induced following ozone exposure, HO-1 may contribute to the development of cellular adaptation to chronic ozone exposure.

Pitfalls using metalloporphyrins in carbon monoxide research.[Pubmed:9226997]

Trends Pharmacol Sci. 1997 Jun;18(6):193-5.

The proposal that endogenously produced carbon monoxide (CO) may act as a biological messenger has remained controversial. Carbon monoxide is generated by haem oxygenase isoenzymes in the degradation of haem-containing molecules. Certain metalloporphyrins, which are inhibitors of haem oxygenase, have been widely used as pharmacological tools in order to establish a messenger role for CO in the brain and periphery. However, increasing evidence shows that many metalloporphyrins are also associated with a large range of undesired effects, which make the interpretation of results using such compounds very uncertain. In this article, Lars Grundemar and Lars Ny evaluate the properties and describe the nonselective effect profile of such metalloporphyrins.

Prevention of neonatal hyperbilirubinemia by tin protoporphyrin IX, a potent competitive inhibitor of heme oxidation.[Pubmed:6947237]

Proc Natl Acad Sci U S A. 1981 Oct;78(10):6466-70.

The effects of various metalloporphyrins on hepatic heme oxygenase (EC 1.14.99.3) activity were examined in order to identify compounds that could inhibit heme degradation to bile pigment and might therefore be utilized to suppress the development of hyperbilirubinemia in the newborn. Among nine metal-protoporphyrin IX chelates (i.e., metal-hemes) studied, Sn-heme, Mn-heme, and Zn-heme substantially diminished heme oxygenase activity in vivo in the rat. These metalloporphyrins act as competitive inhibitory substrates in the heme oxygenase reaction but are not themselves oxidatively degraded. Sn-heme was the most potent enzyme inhibitor (Ki = 0.011 microM) in liver, spleen, kidney, and skin. Sn-heme administered to newborn animals within the first 72 hr after birth blocked the postnatal increase in heme oxygenase activity that occurs in various tissues. Its effect on the enzyme levels was prompt and protracted. Sn-heme administration also entirely prevented the development of hyperbilirubinemia that normally occurs postnatally. The effect of the metalloporphyrin in lowering the increased concentrations of serum bilirubin in neonates was prompt (within 1 day) and persisted throughout the 42 days after birth. No deleterious effects of Sn-heme treatment of the newborn were observed. This demonstrates that a synthetic metalloporphyrin that is a potent competitive inhibitor of heme oxidation can, when administered to the newborn, also prevent the hyperbilirubinemia that normally develops postnatally. The potential clinical implications of these findings are evident, and it is suggested that the pharmacological properties of Sn-heme and related synthetic metalloporphyrins merit further study.

Description

Tin-protoporphyrin IX (SnPPIX) is a potent Heme oxygenase-1 (HO-1) inhibitor. Tin-protoporphyrin IX (SnPPIX) sensitizes pancreatic ductal adenocarcinoma (PDAC) tumors to chemotherapy in mice model.

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