标签归档：脾脏

Splenopentin diacetate(Synonyms: 醋酸脾脏五肽)

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Splenopentin diacetate;(Synonyms: 醋酸脾脏五肽)

Splenopentin diacetate 是一种合成的免疫调节性五肽，对应于脾脏激素脾脏蛋白的残基 32-36。Splenopentin diacetate 可影响早期的 T 细胞和 B 细胞分化，从而增加 γ 射线照射后小鼠体内抗体形成细胞的数量。

Splenopentin diacetateamp;;(Synonyms: 醋酸脾脏五肽)

Splenopentin diacetate Chemical Structure

CAS No. : 105184-37-0

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生物活性

Splenopentin diacetate is a synthetic immunomodulating pentapeptide corresponding to the residues 32-36 of the splenic hormone splenin. Splenopentin diacetate influences both early T and B cell differentiation, to increase the number of antibody-forming cells in mice after gamma irradiation[1][2].

体外研究
(In Vitro)

Splenopentin (1-100 μM) augments human NK cells and has no cytotoxicity[2].
Splenopentin (0.1 ng/mL-10 μg/mL; 3 h) induces phenotypic differentiation of both T- and B-cell precursor cells[3].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.
体内研究
(In Vivo)

Splenopentin (1 mg/kg; i.p. three times a week for 7-90 d) accelerates Langerhans cell recruitment and leads to pretreatment levels of Langerhans cell (LC) density in the skin of mice[4].
Splenopentin (0.01-100 μg per mouse; i.p.) has no demonstrable effect on neuromuscular transmission of mice[3].

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

Animal Model: Female Balb/c/Bln mice were injected Cyclophosphamide or Dexamethasone for 5 consecutive days[4]
Dosage: 1 mg/kg
Administration: I.p. three times a week for 7-90 days
Result: Reached the normal number of epidermal LCs at 28 days after the beginning of Cyclophosphamide treatment.
Accelerated restoration process and reached the normal LC density in the skin after 70 days in Dexamethasone treatment grops.

分子量

813.90

Formula

C35H59N9O13
CAS 号

105184-37-0
中文名称

醋酸脾脏五肽
运输条件

Room temperature in continental US; may vary elsewhere.
储存方式

Please store the product under the recommended conditions in the Certificate of Analysis.
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 (lt;0) 1.;;Try to dissolve the peptide in water first.
2.;;If water fails, add NH4OH (lt;50 μL).
3.;;If the peptide still does not dissolve, add DMSO (50-100 μL) to solubilize the peptide.
Positive (gt;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.
参考文献

  • [1]. Singh VK, et, al. Thymopentin and splenopentin as immunomodulators. Current status. Immunol Res. 1998;17(3):345-68.

    [2]. Rastogi A, et, al. Augmentation of human natural killer cells by splenopentin analogs. FEBS Lett. 1993 Feb 8;317(1-2):93-5.

    [3]. Audhya T, et, al. Contrasting biological activities of thymopoietin and splenin, two closely related polypeptide products of thymus and spleen. Proc Natl Acad Sci U S A. 1984 May;81(9):2847-9.

    [4]. Gruner S, et, al. Stimulation of the recruitment of epidermal Langerhans cells by splenopentin. Arch Dermatol Res. 1990;281(8):526-9.