Buy Igf-Des
Des(1-3)IGF-1 (IGF-DES) is a truncated recombinant analogue of Insulin-like Growth Factor 1 synthesized specifically for in vitro cell culture and preclinical laboratory investigation. Designed with a three-amino-acid N-terminal deletion, this research compound exhibits altered binding kinetics with IGF binding proteins (IGFBPs), making it a valuable target for signal transduction and receptor activity assays. PX1 Research supplies USA-manufactured IGF-DES accompanied by lot-specific third-party analytical documentation.
Quick answer
Des(1-3)IGF-1 (IGF-DES) is a truncated recombinant analogue of Insulin-like Growth Factor 1 synthesized specifically for in vitro cell culture and preclinical laboratory investigation. Designed with a three-amino-acid N-terminal deletion, this research compound exhibits altered binding kinetics with IGF binding proteins (IGFBPs), making it a valuable target for signal transduction and receptor activity assays. PX1 Research supplies USA-manufactured IGF-DES accompanied by lot-specific third-party analytical documentation.
Key takeaways
- When investigators prepare to buy IGF-DES for analytical assays or cellular research, securing an authenticated, ultra-pure peptide is paramount.
- Native human IGF-1 is a 70-amino-acid polypeptide that plays a fundamental role in endocrine and paracrine cellular signaling.
- In vitro data indicate that IGF-DES stimulates intracellular cascades primarily through the IGF-1R tyrosine kinase receptor, triggering downstream phosphorylation of Akt (Protein Kinase B) and the Mitogen-Activated Protein Kinase (MAPK/ERK) pathways.
- To select the appropriate tool for specific experimental conditions, laboratory researchers frequently compare truncated and extended analogues within the insulin-like growth factor superfamily.
Direct Overview: Sourcing High-Purity IGF-DES for Laboratory Research
When investigators prepare to buy IGF-DES for analytical assays or cellular research, securing an authenticated, ultra-pure peptide is paramount. IGF-DES—chemically designated as Des(1-3)IGF-1—is a naturally occurring splice variant and synthetic analogue lacking the tripeptide Gly-Pro-Glu at the N-terminus. This structural alteration prevents binding to endogenous IGF-binding proteins, allowing researchers to evaluate uninhibited receptor interactions in controlled culture environments.
Investigators looking to buy IGF-DES reference material from PX1 Research receive a research-grade lyophilized peptide manufactured in state-of-the-art USA facilities. Every batch undergoes rigorous quality assurance, including High-Performance Liquid Chromatography (HPLC) for quantitative purity and Mass Spectrometry (MS) for precise sequence identity confirmation. Browse our complete catalog of research peptides to support your ongoing laboratory protocols.
Molecular Structure and Biochemical Characteristics of IGF-DES
Native human IGF-1 is a 70-amino-acid polypeptide that plays a fundamental role in endocrine and paracrine cellular signaling. IGF-DES is a shortened 67-amino-acid variant originally isolated from bovine colostrum, human brain tissue, and porcine uterus. The deletion of the N-terminal tripeptide (Glycine-Proline-Glutamic acid) drastically alters the electrostatic landscape of the molecule's binding domain.
In preclinical literature, this structural truncation reduces affinity for circulating IGF-binding proteins (IGFBPs 1 through 6) by more than 99%. Because IGFBPs normally sequester native IGF-1 and modulate its bioavailability, the absence of IGFBP inhibition allows IGF-DES to demonstrate heightened local potency at the Type 1 Insulin-like Growth Factor Receptor (IGF-1R) in cell-free and tissue culture models. Researchers investigating autocrine signaling pathways utilize this property to isolate direct receptor-ligand activation from regulatory carrier dynamics.
Preclinical Research Horizons: Receptor Binding and Cellular Pathways
In vitro data indicate that IGF-DES stimulates intracellular cascades primarily through the IGF-1R tyrosine kinase receptor, triggering downstream phosphorylation of Akt (Protein Kinase B) and the Mitogen-Activated Protein Kinase (MAPK/ERK) pathways. Because circulating IGFBPs do not clear or attenuate IGF-DES in culture media, the compound exhibits significantly altered pharmacokinetic and pharmacodynamic profiles compared to full-length recombinant IGF-1.
Preclinical cell culture experiments utilizing myoblast lineages (such as C2C12 cells) suggest that IGF-DES promotes accelerated myoblast proliferation and differentiation under acidic or hypoxic conditions where native IGF-1 activity is typically blunted by elevated IGFBP expression. Furthermore, neurobiological assays demonstrate that the N-terminal fragment Gly-Pro-Glu (GPE) and its truncated parent molecule play distinct roles in synaptic plasticity and neuronal survival models. Detailed analytical studies regarding these pathways can be explored within our peptide research library.
Comparative Analysis: IGF-DES vs. IGF-1 LR3 and Native IGF-1
To select the appropriate tool for specific experimental conditions, laboratory researchers frequently compare truncated and extended analogues within the insulin-like growth factor superfamily. While native IGF-1 maintains a baseline 70-amino-acid sequence with high affinity for all six IGFBPs, modified variants are engineered to bypass these binding proteins through distinct structural mechanisms.
Specifically, researchers evaluating growth factor signaling often contrast IGF-DES with the IGF-1 LR3 research compound, an extended 83-amino-acid analogue featuring a Glutamic acid to Arginine substitution at position 3 and a 13-amino-acid N-terminal extension. While IGF-1 LR3 exhibits an extended biological half-life in culture due to structural resistance to IGFBPs, IGF-DES exhibits higher relative affinity for the IGF-1R itself and local tissue retention. In musculoskeletal and cellular regeneration protocols, scientists also compare these dynamics against Mechano Growth Factor (MGF) and upstream endocrine regulators such as somatropin analogues to map differential gene transcription and protein synthesis cascades.
Analytical Quality Verification: RP-HPLC, Mass Spectrometry, and Endotoxin Testing
Maintaining absolute experimental reproducibility requires reference materials verified by rigorous analytical chemistry. PX1 Research subjects every batch of IGF-DES to independent testing at an ISO 17025-accredited laboratory prior to release. Purity is quantified using Reverse-Phase High-Performance Liquid Chromatography (RP-HPLC), ensuring that target peptide content consistently meets or exceeds 98.0% purity standards with minimal TFA (trifluoroacetic acid) counter-ion presence.
In addition to RP-HPLC chromatograms, identity is confirmed using Electrospray Ionization Mass Spectrometry (ESI-MS) or MALDI-TOF to validate the exact molecular weight of 7,365.4 Da corresponding to the 67-amino-acid sequence. Crucially for cell culture studies sensitive to inflammatory artifacts, our compounds undergo Chromogenic Recombinant Limulus Amebocyte Lysate (LAL) testing to ensure endotoxin levels remain strictly under <0.01 EU/μg. Every shipment includes a lot-specific Certificate of Analysis (COA) detailing these findings.
Reconstitution, Handling, and Storage Protocols in Laboratory Settings
IGF-DES is supplied as a sterile, lyophilized cake inside sealed borosilicate glass vials to maximize stability during transit and long-term storage. To preserve tertiary peptide structure and prevent degradation, laboratory staff should store dry vials in a freezer at -20°C or -80°C away from intense light.
Reconstitution protocols require careful liquid handling under a laminar flow hood. Lyophilized IGF-DES is typically insoluble in neutral pH phosphate-buffered saline (PBS) at high concentrations due to its hydrophobic properties. Preclinical handling protocols recommend dissolving the peptide in a sterile 10mM to 100mM acetic acid solution (pH 2.5–3.0) or 0.1% TFA to yield a concentrated stock solution, followed by dilution into working culture buffers containing 0.1% BSA (bovine serum albumin) as a carrier protein to minimize non-specific adsorption to plasticware. Reconstituted stock solutions should be aliquoted and frozen at -80°C to avoid repeated freeze-thaw cycles.
USA Manufacturing Standards and ISO 17025 Lot Traceability
The integrity of preclinical data rests on supplier transparency and manufacturing consistency. PX1 Research operates in compliance with Good Manufacturing Practice (GMP) guidelines across modern USA-based synthesis facilities. By maintaining complete domestic oversight of solid-phase peptide synthesis (SPPS), cleavage, purification, and lyophilization, we eliminate the quality variations commonly associated with unverified overseas distributors.
Every vial dispatched features lot-specific tracking numbers directly tied to its digital archive of analytical testing. Principal investigators and institutional laboratory procurement managers can access complete raw chromatograms and mass spectra prior to experimental deployment. Institutions requiring custom synthesis or high-volume orders can establish a dedicated bulk research account to streamline procurement and lock in consistent analytical standards across longitudinal studies.
Ordering, Procurement, and Expedited Laboratory Fulfillment
Timely availability of reagents is critical for maintaining complex research schedules. PX1 Research maintains robust inventory reserves of IGF-DES and related signaling proteins to ensure seamless supply chain reliability. Orders placed before 12:00 PM PST Monday through Friday are processed and dispatched on the same business day from our primary fulfillment centers in California and Arizona.
All products are packaged in insulated, climate-controlled shipping containers designed to protect lyophilized peptides against environmental temperature spikes during transit. Researchers ready to execute prospective trials can select target unit quantities directly on the IGF-DES product specification page or consult our technical support team for custom volumetric packaging.
Frequently Asked Questions
Where can I buy IGF-DES for laboratory research?
You can buy IGF-DES directly through PX1 Research. We provide USA-manufactured, research-grade Des(1-3)IGF-1 featuring >98% HPLC purity, MS sequence verification, and low endotoxin levels (<0.01 EU/μg) for in vitro and preclinical laboratory applications.
What is the primary structural difference between IGF-1 and IGF-DES?
IGF-DES (Des(1-3)IGF-1) is a truncated analogue lacking the first three N-terminal amino acids (Glycine-Proline-Glutamic acid) found in native 70-amino-acid IGF-1. This deletion significantly reduces its affinity for IGF-binding proteins (IGFBPs).
How does reduced IGFBP binding affect IGF-DES in preclinical assays?
Because IGFBPs normally bind and sequester native IGF-1, reducing this interaction allows IGF-DES to remain free in culture media. In vitro studies demonstrate that this results in increased bioavailability and direct receptor activation at the IGF-1R site.
What purity levels are confirmed on the Certificate of Analysis for IGF-DES?
Every lot of IGF-DES from PX1 Research is verified by ISO 17025-accredited laboratories using RP-HPLC to ensure a minimum purity of 98.0%. Sequence identity and molecular weight (7,365.4 Da) are verified via mass spectrometry.
What solvent should be used to reconstitute lyophilized IGF-DES?
Preclinical laboratory protocols typically reconstitute lyophilized IGF-DES in an acidic aqueous buffer, such as 10–100 mM dilute acetic acid (pH ~2.5–3.0), to achieve full dissolution before diluting into working buffers containing 0.1% BSA.
Is IGF-DES suitable for human administration or clinical use?
No. IGF-DES supplied by PX1 Research is strictly designated for laboratory research, in vitro cell culture, and preclinical investigation only. It is not intended for human or animal medical, clinical, therapeutic, or diagnostic application.
How should reconstituted IGF-DES be stored to maintain chemical stability?
Reconstituted stock solutions should be divided into single-use aliquots and stored at -80°C to prevent thermal degradation and avoid repeated freeze-thaw cycles. Lyophilized vials should be stored at -20°C.
What are the endotoxin limits for PX1 Research IGF-DES?
PX1 Research performs chromogenic LAL assays on every lot of IGF-DES to confirm endotoxin levels are maintained below <0.01 EU/μg, preventing cell culture contamination and inflammatory artifacts.
How does IGF-DES compare to IGF-1 LR3 in laboratory research?
While both analogues escape IGFBP binding, IGF-1 LR3 is an 83-amino-acid extended protein designed for prolonged biological half-life, whereas IGF-DES is a 67-amino-acid truncated protein exhibiting high localized receptor affinity.
What are the shipping options for IGF-DES orders from PX1 Research?
PX1 Research dispatches orders on the same day when placed Monday through Friday before 12:00 PM PST. Shipments originate from fulfillment hubs in California and Arizona using temperature-shielded packaging.
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All products are sold strictly for laboratory and research use only. Not for human or veterinary use, diagnosis, treatment or consumption. Statements have not been evaluated by the FDA.