1. Anti-infection Metabolic Enzyme/Protease
  2. Bacterial HIF/HIF Prolyl-Hydroxylase Antibiotic
  3. Gramicidin A

Gramicidin A 是 Gramicidin 的一种肽成分,是一种抗生素(antibiotic)的混合物,最初从 B. brevis 中分离得到。 Gramicidin A 是一种高度疏水的通道形成离子载体,在人工膜中形成一价阳离子可渗透的通道。Gramicidin A 诱导缺氧诱导因子 1α (HIF-1α) 的降解。

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Custom Peptide Synthesis

Gramicidin A Chemical Structure

Gramicidin A Chemical Structure

CAS No. : 11029-61-1

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MCE 顾客使用本产品发表的 1 篇科研文献

查看 HIF/HIF Prolyl-Hydroxylase 亚型特异性产品:

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  • 生物活性

  • 纯度 & 产品资料

  • 参考文献

生物活性

Gramicidin A is a peptide component of gramicidin, an antibiotic mixture originally isolated from B. brevis. Gramicidin A is a highly hydrophobic channel-forming ionophore that forms channels in model membranes that are permeable to monovalent cations. Gramicidin A induces degradation of hypoxia inducible factor 1 α (HIF-1α)[1][2].

IC50 & Target

HIF-1α[2]

体外研究
(In Vitro)

Gramicidin A displays potent broad-spectrum antibiotic activity against Gram-positive strains, even multidrug-resistant strains[1].
Gramicidin A has the disadvantage of high hemolytic activity[1].
Gramicidin A (0.1 nM-10 μM, 72 h) reduces the viability of RCC cell lines and affects cell viability comparable to Monensin (HY-N4302)[2].
Gramicidin A cellular sensitivity is significantly altered by neither VHL nor HIF-1α expression[2].
Gramicidin A (1 and 10 μM, 48 or 72 h) induces nonapoptotic cell death in RCC cells[2].
Gramicidin A (0-10 μM, 24 h) depletes cellular energy and induces metabolic dysfunction in RCC cells[2].
Gramicidin A (0-1 μM, 24-72 h) reduces HIF-1α and HIF-2α protein expression, reduces HIF transcriptional activity and target gene expression (24 h)[3]

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Cell Viability Assay[2]

Cell Line: A498, 786-O, Caki-1, SN12C, ACHN, UMRC6, UMRC6+VHL, HEK293T+pcDNA3, HEK293T+HA-HIF-1α, HEK293T+HA-HIF-1α-mut
Concentration: 0.1 nM-10 μM
Incubation Time: 72 h
Result: Reduced the viability with IC50s of 0.420, 0.430, 0.228, 0.104, 0.783, 0.253, 0.425, 0.057, 0.058 and 0.067 μM against A498, 786-O, Caki-1, SN12C, ACHN, UMRC6, UMRC6+VHL, HEK293T+pcDNA3, HEK293T+HA-HIF-1α, HEK293T+HA-HIF-1α-mut cells, respectively.

Western Blot Analysis[2][3]

Cell Line: 786-O, SN12C, Caki-1, ACHN
Concentration: 1 and 10 μM or 0.1, 0.5 and 1.0 μM
Incubation Time: 24, 48 or 72 h
Result: PARP cleavage was not detected. Increased the phosphorylation of AMPKα and its substrate ACC at both 24 and 48 hours. Reduced HIF-1α and HIF-2α protein expression. Hypoxic expression of CA-IX, GLUT-1, and GAPDH were all decreased in a dose-dependent manner.

RT-PCR[3]

Cell Line: SN12C, Caki-1, ACHN
Concentration: 0.1, 0.5 and 1.0 μM
Incubation Time: 24 h
Result: Significantly altered transcript expression for only HIF-2α in SN12C cells.
体内研究
(In Vivo)

Gramicidin A (0.11 mg/kg; intratumoral injection; twice weekly for 14 days) inhibits the growth of RCC tumor xenografts[2].
Gramicidin A (0.22 mg/kg; intratumoral injection; thrice weekly for 26 days) inhibits the growth and angiogenesis of VHL-expressing RCC tumor xenografts[3].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Animal Model: Female hairless Nu/J mice, 6- to 8-week old, injected subcutaneously with a suspension of SN12C cells (1.0 × 106) in a 50% growth factor–reduced Matrigel solution[2]
Dosage: 0.11 mg/kg body weight
Administration: Intratumoral injection, twice weekly for 14 days
Result: The average tumor mass was reduced by approximately 40% without significant toxicity.
Animal Model: Female hairless 6- to 8-week-old Nu/J mice, injected subcutaneously with a suspension of Caki-1-td-Tomato cells (1.5 × 106) in a 50% growth factor-reduced Matrigel solution[3].
Dosage: 0.22 mg/kg
Administration: Intratumoral injection, thrice weekly for 26 days
Result: Inhibited tumor growth. HIF-2α and GAPDH protein expression was substantially reduced.
分子量

1882.29

Formula

C99H140N20O17

CAS 号
性状

固体

颜色

White to off-white

Sequence

{For}-Val-Gly-Ala-{D-Leu}-Ala-{D-Val}-Val-{D-Val}-Trp-{D-Leu}-Trp-{D-Leu}-Trp-{D-Leu}-Trp-{NHCH2CH2OH}

运输条件

Room temperature in continental US; may vary elsewhere.

储存方式

Sealed storage, away from moisture

Powder -80°C 2 years
-20°C 1 year

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

Solvent & Solubility
In Vitro: 

H2O

Peptide Solubility and Storage Guidelines:

1.  Calculate the length of the peptide.

2.  Calculate the overall charge of the entire peptide according to the following table:

  Contents Assign value
Acidic amino acid Asp (D), Glu (E), and the C-terminal -COOH. -1
Basic amino acid Arg (R), Lys (K), His (H), and the N-terminal -NH2 +1
Neutral amino acid Gly (G), Ala (A), Leu (L), Ile (I), Val (V), Cys (C), Met (M), Thr (T), Ser (S), Phe (F), Tyr (Y), Trp (W), Pro (P), Asn (N), Gln (Q) 0

3.  Recommended solution:

Overall charge of peptide Details
Negative (<0) 1.  Try to dissolve the peptide in water first.
2.  If water fails, add NH4OH (<50 μL).
3.  If the peptide still does not dissolve, add DMSO (50-100 μL) to solubilize the peptide.
Positive (>0) 1.  Try to dissolve the peptide in water first.
2.  If water fails, try dissolving the peptide in a 10%-30% acetic acid solution.
3.  If the peptide still does not dissolve, try dissolving the peptide in a small amount of DMSO.
Zero (=0) 1.  Try to dissolve the peptide in organic solvent (acetonitrile, methanol, etc.) first.
2.  For very hydrophobic peptides, try dissolving the peptide in a small amount of DMSO, and then dilute the solution with water to the desired concentration.
纯度 & 产品资料

纯度: ≥98.0%

参考文献
  • 摩尔计算器

  • 稀释计算器

The molarity calculator equation

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

质量   浓度   体积   分子量 *
= × ×

The dilution calculator equation

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

浓度 (start) × 体积 (start) = 浓度 (final) × 体积 (final)
× = ×
C1   V1   C2   V2
Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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产品名称:
Gramicidin A
目录号:
HY-P2324
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