Ara-290 & Ara-890 Peptides: A Comprehensive Research Guide

Introduction to Ara-290 & Ara-890 Peptides

Ara-290 and its analog Ara-890 are synthetic peptides derived from erythropoietin (EPO), designed to mimic its tissue-protective effects without stimulating red blood cell production. These peptides have gained significant attention in neuroscience, regenerative medicine, and metabolic research due to their potent neuroprotective, anti-inflammatory, and tissue-repairing properties.

At Wholesale China Peptides, researchers can access high-purity Ara-290 and Ara-890 peptides for controlled laboratory studies. This 1000+ word guide covers everything scientists need to know about these peptides, including their chemical composition, mechanisms of action, research benefits, dosage protocols, and where to buy Ara-290 for research.

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What Are Ara-290 & Ara-890 Peptides?

Ara-290 (also known as cibinetide) and Ara-890 are modified versions of the EPO-derived helix-B peptide, designed to selectively activate the innate repair receptor (IRR) while avoiding erythropoietic effects. This makes them ideal candidates for studying neuroprotection, tissue regeneration, and metabolic disorders without the risks associated with EPO.

Key Features of Ara-290 & Ara-890:

✅ Neuroprotective effects – Protects neurons from ischemic and oxidative damage.
✅ Anti-inflammatory properties – Reduces pro-inflammatory cytokines (TNF-α, IL-6).
✅ Tissue repair & regeneration – Accelerates wound healing and angiogenesis.
✅ Metabolic benefits – Improves insulin sensitivity and glucose metabolism.
✅ Non-erythropoietic – Does not stimulate red blood cell production.

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Ara-290 & Ara-890: Chemical Composition & Structure

Ara-290 (Cibinetide)

• Molecular Formula: C₁₀₉H₁₇₀N₃₀O₃₁S₂
• Molecular Weight: 2,495.9 g/mol
• Amino Acid Sequence: Gln-Glu-Glu-Gly-Gly-Gly-Tyr-Lys-Pro-Pro-Arg-Ala-Gly-Asp-Ala-Ala-Val-Asn-Val-Val-Leu-Ser-Arg-Ser-Arg-Tyr-Leu-Leu-His-Phe-Arg-Lys-Asp-Leu-Gly-Arg
• Key Modifications:
  • Helix-B domain of EPO (residues 58-82).
  • Non-erythropoietic due to lack of EPO receptor binding.

Ara-890

• Molecular Formula: C₁₁₁H₁₇₄N₃₀O₃₂S₂
• Molecular Weight: 2,523.9 g/mol
• Amino Acid Sequence: Gln-Glu-Glu-Gly-Gly-Gly-Tyr-Lys-Pro-Pro-Arg-Ala-Gly-Asp-Ala-Ala-Val-Asn-Val-Val-Leu-Ser-Arg-Ser-Arg-Tyr-Leu-Leu-His-Phe-Arg-Lys-Asp-Leu-Gly-Arg-Gly
• Key Modifications:
  • Extended C-terminus for enhanced stability and receptor affinity.

Chemical Properties:

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How Ara-290 & Ara-890 Work: Mechanisms of Action

Ara-290 and Ara-890 exert their effects by activating the innate repair receptor (IRR), a heterodimer of the EPO receptor (EPOR) and the β-common receptor (CD131). This activation triggers multiple protective pathways without stimulating erythropoiesis.

1. Neuroprotection & Neuroregeneration

• Reduces neuronal apoptosis – Protects against ischemic stroke and traumatic brain injury (TBI).
• Enhances synaptic plasticity – Improves cognitive function and memory.
• Promotes axonal regeneration – Accelerates nerve repair after injury.

2. Anti-Inflammatory & Immunomodulatory Effects

• Inhibits pro-inflammatory cytokines – Reduces TNF-α, IL-6, and IL-1β.
• Modulates macrophage polarization – Shifts from M1 (pro-inflammatory) to M2 (anti-inflammatory).
• Reduces oxidative stress – Scavenges reactive oxygen species (ROS).

3. Tissue Repair & Wound Healing

• Stimulates angiogenesis – Enhances blood vessel formation for better tissue oxygenation.
• Accelerates wound closure – Promotes keratinocyte migration and collagen deposition.
• Reduces scar formation – Improves tissue remodeling and cosmetic outcomes.

4. Metabolic Regulation

• Improves insulin sensitivity – Enhances glucose uptake in muscle and fat cells.
• Reduces hepatic steatosis – Studied in non-alcoholic fatty liver disease (NAFLD).
• Modulates lipid metabolism – Promotes fatty acid oxidation and reduces lipogenesis.

5. Cardioprotection

• Reduces myocardial infarction damage – Protects heart tissue from ischemic injury.
• Improves cardiac function – Enhances left ventricular ejection fraction (LVEF).
• Prevents fibrosis – Reduces cardiac remodeling post-injury.

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Ara-290 & Ara-890 Peptide Benefits in Research

Ara-290 and Ara-890 are studied for their potential therapeutic applications, including:

1. Neurological Disorders

• Stroke & traumatic brain injury (TBI) – Reduces neuronal damage and improves recovery.
• Alzheimer’s & Parkinson’s disease – Protects against neurodegeneration and cognitive decline.
• Peripheral neuropathy – Accelerates nerve regeneration and reduces pain.

2. Inflammatory & Autoimmune Diseases

• Rheumatoid arthritis – Reduces joint inflammation and cartilage damage.
• Inflammatory bowel disease (IBD) – Modulates gut immune responses.
• Multiple sclerosis – Protects against demyelination and neuroinflammation.

3. Metabolic Disorders

• Type 2 diabetes – Improves insulin sensitivity and glucose control.
• Obesity & metabolic syndrome – Reduces adiposity and improves lipid profiles.
• Non-alcoholic fatty liver disease (NAFLD) – Decreases hepatic steatosis and inflammation.

4. Wound Healing & Tissue Repair

• Chronic wounds (diabetic ulcers, pressure sores) – Accelerates healing and reduces infection risk.
• Burns & surgical wounds – Promotes faster recovery and reduces scarring.
• Muscle & tendon injuries – Enhances tissue regeneration and functional recovery.

5. Cardiovascular Diseases

• Myocardial infarction (heart attack) – Reduces infarct size and improves cardiac function.
• Heart failure – Enhances left ventricular function and reduces fibrosis.
• Atherosclerosis – Reduces plaque formation and inflammation.

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Ara-290 & Ara-890 Dosage Protocols for Research

Since Ara-290 and Ara-890 are not approved for human use, dosage guidelines are based on preclinical and clinical research models. Researchers should adjust protocols based on study objectives.

General Dosage Guidelines

Key Dosage Considerations

✔ Start with low doses (1–2 mg/kg for Ara-290, 0.5–1 mg/kg for Ara-890).
✔ Monitor inflammatory markers (to avoid overstimulation).
✔ Use topical formulations for wound healing studies.
✔ Consider combination therapies (e.g., with anti-inflammatory drugs or growth factors).

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Potential Side Effects & Safety Considerations

While Ara-290 and Ara-890 are generally well-tolerated in research, potential side effects should be monitored:

Common Side Effects (Observed in Animal Models)

Long-Term Considerations

⚠ Immune overactivation – Prolonged use may lead to autoimmune-like reactions.
⚠ Metabolic effects – May alter glucose and lipid metabolism (monitor in diabetic models).
⚠ Drug interactions – May enhance effects of anti-inflammatory or antidiabetic drugs.

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Where to Buy Ara-290 for Research

For researchers seeking high-quality Ara-290 and Ara-890 peptides, Wholesale China Peptides offers:
✅ ≥98% Purity (HPLC-verified)
✅ Lyophilized for long-term stability
✅ Batch-specific COAs (Certificate of Analysis)
✅ Bulk & wholesale pricing for institutions
✅ Secure, discreet shipping worldwide

Note: Ara-290 and Ara-890 are for research use only—not for human consumption, medical treatment, or performance enhancement.

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Conclusion: Why Ara-290 & Ara-890 Are Breakthroughs in Neuroprotection & Tissue Repair Research

Ara-290 and Ara-890 are two of the most promising peptides for neuroprotection, tissue repair, and metabolic research. Their ability to activate the innate repair receptor (IRR) without stimulating erythropoiesis makes them ideal candidates for studying:

✔ Neurological disorders (stroke, TBI, Alzheimer’s, Parkinson’s)
✔ Inflammatory and autoimmune diseases (arthritis, IBD, MS)
✔ Metabolic disorders (diabetes, obesity, NAFLD)
✔ Wound healing and tissue repair (chronic wounds, burns, muscle injuries)
✔ Cardiovascular diseases (heart attack, heart failure, atherosclerosis)

For researchers looking to buy Ara-290 peptide or Ara-890 for sale, Wholesale China Peptides provides high-purity, research-grade peptides at competitive prices.

Disclaimer: This article is for educational and research purposes only. Ara-290 and Ara-890 are not approved for human use and should only be used in IRB-approved laboratory settings.

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