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ApoA-I mimetic peptide

Cat No.:V74049 Purity: ≥98%
ApoA-I mimetic peptide (PVLDLFRELLNELLEALKQKLK) has good lecithin:cholesterol acyltransferase (LCAT) activating effect.
ApoA-I mimetic peptide
ApoA-I mimetic peptide Chemical Structure CAS No.: 221882-20-8
Product category: Liposome
This product is for research use only, not for human use. We do not sell to patients.
Size Price Stock Qty
5mg
10mg
25mg
50mg
Other Sizes
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Product Description
ApoA-I mimetic peptide (PVLDLFRELLNELLEALKQKLK) has good lecithin:cholesterol acyltransferase (LCAT) activating effect. ApoA-I mimetic peptide may be utilized to prepare peptide/lipid complexes.
ApoA-I mimetic peptide (CAS#: 221882-20-8) is a synthetic peptide with the sequence PVLDLFRELLNELLEALKQKLK (Pro-Val-Leu-Asp-Leu-Phe-Arg-Glu-Leu-Leu-Asn-Glu-Leu-Leu-Glu-Ala-Leu-Lys-Gln-Lys-Leu-Lys). It is designed to replicate the structural and functional properties of apolipoprotein A-I, the principal protein component of high-density lipoprotein (HDL) in plasma. The peptide has a molecular formula of C122H208N30O33 and a molecular weight of 2623.14.
Biological Activity I Assay Protocols (From Reference)
Targets
ApoA-I mimetic peptide exhibits potent activation of lecithin:cholesterol acyltransferase (LCAT), an enzyme responsible for the esterification of cholesterol in HDL particles. By activating LCAT, the peptide promotes reverse cholesterol transport and HDL maturation.
ln Vitro
The peptide demonstrates good LCAT activation potency in vitro. It can be used for the synthesis of peptide/lipid complexes, which are valuable tools in cardiovascular and metabolic research. Cellular assays typically utilize macrophage cell lines to measure cholesterol efflux.
ln Vivo
In vivo, ApoA-I mimetic peptides are employed in animal models to evaluate their effects on foam cell formation, macrophage lipid handling, and atherosclerotic lesion development. These peptides have been shown to reduce atherosclerosis progression in various mouse models.
Enzyme Assay
In vitro LCAT activation assays are performed by incubating the peptide with synthetic lipid substrates (phosphatidylcholine/cholesterol liposomes) and purified LCAT enzyme. The reaction is monitored by measuring the formation of cholesteryl esters using radiometric or chromatographic methods. Activity is expressed as the percentage of cholesterol esterified per unit time.
Cell Assay
Cellular assays for ApoA-I mimetic peptide typically utilize macrophage cell lines (e.g., RAW 264.7 or THP-1-derived macrophages) to measure cholesterol efflux. Cells are loaded with fluorescently or radiolabeled cholesterol, then incubated with the peptide. The amount of cholesterol released into the medium is measured and compared to control treatments.
Animal Protocol
In vivo animal studies typically use atherosclerosis-prone mouse models such as ApoE-deficient or LDL receptor-deficient mice. Peptides are administered via intraperitoneal or subcutaneous injection, and atherosclerosis progression is assessed by quantifying aortic lesion area. Lipid profiles, inflammatory markers, and macrophage cholesterol content are also evaluated.
ADME/Pharmacokinetics
Pharmacokinetic properties of ApoA-I mimetic peptides are characteristic of peptide therapeutics, typically exhibiting rapid clearance from circulation with half-lives ranging from minutes to a few hours. The peptide is subject to proteolytic degradation and renal clearance.
Toxicity/Toxicokinetics
As a peptide-based research compound, ApoA-I mimetic peptide is generally well-tolerated in animal studies at research doses. Standard safety precautions for handling synthetic peptides should be followed. No significant toxicity has been reported in the literature for this specific peptide.
References

[1]. Helsingin yliopisto. Formation of therapeutic hdl-mimetic nanodiscs and their interaction with lecithin:cholesterol acyltransferase-a qcm study.

[2]. Abstract 335: Atheroma-specific Delivery of Synthetic High-density Lipoprotein Containing Sphingosine-1-phosphate for Modulation of Vascular Inflammation. Arteriosclerosis, Thrombosis, and Vascular Biology.

Additional Infomation
ApoA-I mimetic peptide is a valuable tool in cardiovascular research for studying HDL function, reverse cholesterol transport, and atherosclerosis pathogenesis. It has been investigated in preclinical models as a potential therapeutic agent for cardiovascular disease. The peptide is also used in the synthesis of peptide/lipid complexes. At least 30 references in Google Scholar cite research involving this peptide.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C122H208N30O33
Molecular Weight
2623.13815021515
Exact Mass
2622.555
CAS #
221882-20-8
PubChem CID
171706663
Sequence
Pro-Val-Leu-Asp-Leu-Phe-Arg-Glu-Leu-Leu-Asn-Glu-Leu-Leu-Glu-Ala-Leu-Lys-Gln-Lys-Leu-Lys
SequenceShortening
PVLDLFRELLNELLEALKQKLK
Appearance
White to off-white solid powder
Hydrogen Bond Donor Count
35
Hydrogen Bond Acceptor Count
38
Rotatable Bond Count
95
Heavy Atom Count
185
Complexity
5710
Defined Atom Stereocenter Count
22
SMILES
C[C@@H](C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(=O)N)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCCCN)C(=O)O)NC(=O)[C@H](CCC(=O)O)NC(=O)[C@H](CC(C)C)NC(=O)[C@H](CC(C)C)NC(=O)[C@H](CCC(=O)O)NC(=O)[C@H](CC(=O)N)NC(=O)[C@H](CC(C)C)NC(=O)[C@H](CC(C)C)NC(=O)[C@H](CCC(=O)O)NC(=O)[C@H](CCCNC(=N)N)NC(=O)[C@H](CC1=CC=CC=C1)NC(=O)[C@H](CC(C)C)NC(=O)[C@H](CC(=O)O)NC(=O)[C@H](CC(C)C)NC(=O)[C@H](C(C)C)NC(=O)[C@@H]2CCCN2
InChi Key
OTFKMDYRWGESRW-BIACLGMUSA-N
InChi Code
InChI=1S/C122H208N30O33/c1-62(2)51-82(109(172)134-74(33-23-26-46-123)103(166)136-77(38-42-93(126)153)106(169)133-75(34-24-27-47-124)105(168)142-84(53-64(5)6)111(174)140-81(121(184)185)35-25-28-48-125)141-100(163)71(19)132-102(165)78(39-43-95(155)156)138-110(173)83(52-63(3)4)145-112(175)85(54-65(7)8)144-108(171)80(41-45-97(159)160)139-118(181)91(60-94(127)154)149-115(178)88(57-68(13)14)146-113(176)86(55-66(9)10)143-107(170)79(40-44-96(157)158)137-104(167)76(37-30-50-131-122(128)129)135-117(180)90(59-72-31-21-20-22-32-72)148-114(177)87(56-67(11)12)147-119(182)92(61-98(161)162)150-116(179)89(58-69(15)16)151-120(183)99(70(17)18)152-101(164)73-36-29-49-130-73/h20-22,31-32,62-71,73-92,99,130H,23-30,33-61,123-125H2,1-19H3,(H2,126,153)(H2,127,154)(H,132,165)(H,133,169)(H,134,172)(H,135,180)(H,136,166)(H,137,167)(H,138,173)(H,139,181)(H,140,174)(H,141,163)(H,142,168)(H,143,170)(H,144,171)(H,145,175)(H,146,176)(H,147,182)(H,148,177)(H,149,178)(H,150,179)(H,151,183)(H,152,164)(H,155,156)(H,157,158)(H,159,160)(H,161,162)(H,184,185)(H4,128,129,131)/t71-,73-,74-,75-,76-,77-,78-,79-,80-,81-,82-,83-,84-,85-,86-,87-,88-,89-,90-,91-,92-,99-/m0/s1
Chemical Name
(2S)-6-amino-2-[[(2S)-2-[[(2S)-6-amino-2-[[(2S)-5-amino-2-[[(2S)-6-amino-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-4-amino-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-5-carbamimidamido-2-[[(2S)-2-[[(2S)-2-[[(2S)-3-carboxy-2-[[(2S)-4-methyl-2-[[(2S)-3-methyl-2-[[(2S)-pyrrolidine-2-carbonyl]amino]butanoyl]amino]pentanoyl]amino]propanoyl]amino]-4-methylpentanoyl]amino]-3-phenylpropanoyl]amino]pentanoyl]amino]-4-carboxybutanoyl]amino]-4-methylpentanoyl]amino]-4-methylpentanoyl]amino]-4-oxobutanoyl]amino]-4-carboxybutanoyl]amino]-4-methylpentanoyl]amino]-4-methylpentanoyl]amino]-4-carboxybutanoyl]amino]propanoyl]amino]-4-methylpentanoyl]amino]hexanoyl]amino]-5-oxopentanoyl]amino]hexanoyl]amino]-4-methylpentanoyl]amino]hexanoic acid
HS Tariff Code
2934.99.9001
Storage

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Note: Please store this product in a sealed and protected environment (e.g. under nitrogen), avoid exposure to moisture and light.
Shipping Condition
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
Solubility Data
Solubility (In Vitro)
DMSO: 12.5 mg/mL (4.77 mM)
Solubility (In Vivo)
Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples.

Injection Formulations
(e.g. IP/IV/IM/SC)
Injection Formulation 1: DMSO : Tween 80: Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution 50 μL Tween 80 850 μL Saline)
*Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution.
Injection Formulation 2: DMSO : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO 400 μLPEG300 50 μL Tween 80 450 μL Saline)
Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO 900 μL Corn oil)
Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals).
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Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO 900 μL (20% SBE-β-CD in saline)]
*Preparation of 20% SBE-β-CD in Saline (4°C,1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution.
Injection Formulation 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (i.e. 500 μL 2-Hydroxypropyl-β-cyclodextrin 500 μL Saline)
Injection Formulation 6: DMSO : PEG300 : castor oil : Saline = 5 : 10 : 20 : 65 (i.e. 50 μL DMSO 100 μLPEG300 200 μL castor oil 650 μL Saline)
Injection Formulation 7: Ethanol : Cremophor : Saline = 10: 10 : 80 (i.e. 100 μL Ethanol 100 μL Cremophor 800 μL Saline)
Injection Formulation 8: Dissolve in Cremophor/Ethanol (50 : 50), then diluted by Saline
Injection Formulation 9: EtOH : Corn oil = 10 : 90 (i.e. 100 μL EtOH 900 μL Corn oil)
Injection Formulation 10: EtOH : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL EtOH 400 μLPEG300 50 μL Tween 80 450 μL Saline)


Oral Formulations
Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium)
Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose
Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals).
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Oral Formulation 3: Dissolved in PEG400
Oral Formulation 4: Suspend in 0.2% Carboxymethyl cellulose
Oral Formulation 5: Dissolve in 0.25% Tween 80 and 0.5% Carboxymethyl cellulose
Oral Formulation 6: Mixing with food powders


Note: Please be aware that the above formulations are for reference only. InvivoChem strongly recommends customers to read literature methods/protocols carefully before determining which formulation you should use for in vivo studies, as different compounds have different solubility properties and have to be formulated differently.

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 0.3812 mL 1.9061 mL 3.8122 mL
5 mM 0.0762 mL 0.3812 mL 0.7624 mL
10 mM 0.0381 mL 0.1906 mL 0.3812 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.

Calculator

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What is the mass of compound required to make a 10 mM stock solution in 5 ml of DMSO given that the molecular weight of the compound is 350.26 g/mol?
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What volume of a given 10 mM stock solution is required to make 25 ml of a 25 μM solution?
Using the equation C1V1 = C2V2, where C1=10 mM, C2=25 μM, V2=25 ml and V1 is the unknown:
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Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
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In vivo Formulation Calculator (Clear solution)
Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)
Step 2: Enter in vivo formulation (This is only a calculator, not the exact formulation for a specific product. Please contact us first if there is no in vivo formulation in the solubility section.)
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Calculation results

Working concentration mg/mL;

Method for preparing DMSO stock solution mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.

Method for preparing in vivo formulation:Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O,mix and clarify.

(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
             (2) Be sure to add the solvent(s) in order.

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