CJC 1295 powder is an artificially synthesized peptide hormone substance, belonging to growth hormone releasing hormone (GHRH) analogs. Composed of 30 amino acids, with a molecular formula of C152H252N44O42 and a molecular weight of approximately 3367.89. Its structure is based on the active fragment of natural GHRH (amino acids 1-29), which extends its half-life through chemical modification. The powder is white in form and usually has a purity of ≥ 98%. It needs to be sealed and stored at -20 ℃ to -80 ℃ to prevent degradation. It was developed by the Canadian biotechnology company ConjuChem, which activates growth hormone releasing receptors to promote the secretion of endogenous growth hormone, thereby affecting metabolic regulation and muscle growth function in the body.
Our Product Form
CJC-1295 COA
CJC 1295 powder activates the GHRH receptor in the anterior pituitary gland, promotes the secretion of endogenous growth hormone (GH), and thereby upregulates insulin-like growth factor-1 (IGF-1) levels. Its mechanism of action has the following characteristics:
1. Accurately regulate GH secretion
Pulse based release optimization: Natural GHRH is released in a pulsed form, which continuously stimulates the pituitary gland during GH pulse intervals by prolonging its half-life, increasing the amount of GH released in a single pulse. Research has shown that it can increase GH pulse amplitude by 300% while avoiding receptor desensitization caused by long-term constant stimulation.
Inhibition effect: With age, the level of somatostatin (a hormone that inhibits GH secretion) increases. The intermittent period of somatostatin secretion can be utilized to selectively enhance GHRH signaling and maximize GH secretion efficiency.
2. Multidimensional metabolic regulation
Muscle synthesis and repair: GH promotes protein synthesis by activating the IGF-1 pathway, increasing muscle cross-sectional area and strength. In clinical trials, subjects who used CJC-1295 for 6 months showed a 10% increase in lean muscle mass and a significant improvement in muscle tightness.
Fat breakdown: GH directly activates lipase, promoting fat oxidation for energy supply. Users typically experience a 5-10% reduction in body fat within 3 months, particularly in reducing abdominal fat accumulation.
Bone density enhancement: GH stimulates osteoblast activity and increases bone mineral deposition. Long term use can reduce the risk of osteoporosis and improve joint health.
Immune function enhancement: GH enhances immune response by regulating T and B cell function, reducing the incidence of infection in users by 27%.
3. Neuroprotection and cognitive improvement
Slow wave sleep promotion: GH secretion peak synchronizes with deep sleep stage, resulting in a 40% improvement in sleep quality and significant improvement in memory and attention for users.
Neural regeneration: GH mediates hippocampal neurogenesis through IGF-1, which may delay the progression of neurodegenerative diseases such as Alzheimer's disease.
The chemical synthesis method of CJC-1295 is mainly solid-phase synthesis, and its core principle is to gradually couple amino acids with amino resin carriers to construct polypeptide chains, combined with DAC modification technology to optimize drug half-life. The following are specific methods and key steps:
Method 1: Fragment Condensation Method
The fragment reduction method of CJC 1295 powder is not its mainstream synthesis method, but it has theoretical feasibility in specific scenarios, such as synthesizing ultra long peptides containing special modifications or non natural amino acids. The following is a detailed introduction to the fragment condensation method:
Basic principles
Fragment condensation method is a technique that divides a polypeptide chain into multiple fragments, synthesizes them separately, and chemically connects them to form a complete polypeptide. Its core lies in achieving efficient and highly selective peptide assembly by controlling the linking reactions between fragments. Compared with solid-phase synthesis, fragment condensation method is more suitable for the synthesis of ultra long peptides or complex modified peptides, but the operation is complex and the yield is lower.
Specific steps
Fragment division: Based on the amino acid sequence of CJC-1295 (30 amino acids), divide it into 2-3 fragments. The division principles include: avoiding breakage at amino acids that are prone to racemization or have high steric hindrance; Maintain a moderate fragment length (usually 10-15 amino acids) to balance synthesis difficulty and connection efficiency.
Fragment synthesis: Solid phase synthesis method is used to synthesize each fragment separately. For example, amino resins with Fmoc protecting groups are used as carriers to construct fragment chains by gradually coupling amino acids. After synthesis, the fragments were cut from the resin using a lysis buffer (such as trifluoroacetic acid) and purified by HPLC.
Connection methods: Common connection methods include thioester bonds, azides, etc. Taking the thioester bond as an example, its reaction conditions are mild and selective, making it suitable for linking fragments containing Cys (cysteine). The specific steps are: introducing a thioester group at the C-terminus of fragment 1, retaining a free amino group at the N-terminus of fragment 2, and promoting the formation of a thioester bond between the two through a condensing agent (such as HBTU).
Optimization of reaction conditions: It is necessary to control the reaction temperature (usually room temperature), pH value (7-8), and reaction time (several hours to overnight) to improve the connection efficiency and reduce side reactions.
Purification:
The connected complete peptide needs to be further purified by HPLC to remove unreacted fragments or by-products.
Identification:
Molecular weight was confirmed using mass spectrometry (MS), and structural correctness was verified through amino acid sequence analysis.
Applicability in synthesis
The molecular weight of CJC-1295 is relatively small (3534.03 g/mol), and there are no special modifications or non natural amino acids in its structure, so the solid-phase synthesis method is sufficiently efficient. The application of fragment condensation method in the synthesis of CJC-1295 is relatively limited, mainly because its advantages (such as flexibility) are not clearly reflected in CJC-1295, while its disadvantages (such as low yield and high cost) are more prominent.
Method 2: Liquid phase synthesis method
Principle:
Gradually add amino acids to the solution and control reaction selectivity through protective groups.
Disadvantages:
Requiring frequent purification of intermediates, complex operation and low yield, only suitable for small-scale synthesis in the laboratory.
Key control points
Resin selection:
It affects the coupling efficiency and product purity, and the appropriate carrier should be selected based on the properties of the peptide.
Coupling conditions:
Temperature, pH value, and reaction time need to be precisely controlled to avoid racemization or side reactions.
Removal of protective groups:
Choose mild reagents (such as ammonia/DMF mixture) to avoid damaging the polypeptide chain.
Purification process:
The HPLC conditions (such as mobile phase composition and column temperature) need to be optimized to improve separation efficiency.
CJC 1295 powder is not a naturally occurring substance in nature, but a growth hormone releasing hormone (GHRH) analog developed through artificial chemical synthesis technology. Its design inspiration comes from in-depth analysis and functional simulation of the natural GHRH molecular structure.
Scientific principle: Imitate the physiological mechanism of natural GHRH
1. The role of natural GHRH
Natural GHRH is secreted by the hypothalamus and stimulates the pulsatile release of growth hormone (GH) by binding to GHRH receptors in the anterior pituitary gland. GH further promotes the synthesis of insulin-like growth factor-1 (IGF-1) in the liver, jointly regulating physiological processes such as muscle growth, fat metabolism, and bone density. However, the half-life of natural GHRH is extremely short (only a few minutes) and requires frequent secretion to maintain physiological effects.
2. Design objectives
Scientists have developed analogues with significantly prolonged half-life by chemically modifying the molecular structure of natural GHRH, aiming to achieve the following goals:
Reduce injection frequency:
By prolonging the half-life and reducing the frequency of administration.
Stable blood drug concentration:
Avoid fluctuations in blood drug concentration caused by the short half-life of natural GHRH.
Enhancing physiological effects:
By continuously stimulating GH secretion, increasing IGF-1 levels, and improving aging related issues such as muscle atrophy and fat accumulation.
Development background: Medical needs to address the decline in growth hormone secretion
1. Age related decline in GH secretion
As age increases, GH secretion gradually decreases, leading to aging phenomena such as decreased muscle mass, fat accumulation, and decreased skin elasticity. Traditional exogenous GH supplementation therapy may cause side effects such as insulin resistance and acromegaly, while stimulating endogenous GH secretion is considered safer.
2. Limitations of Short acting GHRH Analogs
Early developed short acting GHRH analogs (such as Mod GRF 1-29) have a half-life of only about 30 minutes and require multiple daily injections, resulting in poor patient compliance. The development aims to solve this problem.
Technical path: Chemical modification prolongs half-life
1. Molecular structure optimization
Composed of 30 amino acids, its core structure is based on the first 29 active amino acids of natural GHRH, and its half-life is extended through the following modifications:
DAC technology:
Adding "drug affinity complexes" (DAC) at the molecular end can bind with albumin in the blood, forming stable complexes and significantly extending the half-life to 6-8 days.
Amino acid substitution:
By replacing specific amino acids (such as replacing Lys with D-Ala), molecular stability is enhanced and enzymatic degradation is reduced.
2. Function verification
Preclinical studies have shown that it can significantly increase plasma GH and IGF-1 levels:
GH levels:
After a single injection, plasma GH concentration can increase by 2-10 times for more than 6 days.
IGF-1 levels:
Plasma IGF-1 concentration can increase by 1.5-3 times, lasting for 9-11 days, and even maintained at high doses for up to 28 days.
Hot Tags: cjc 1295 powder, China cjc 1295 powder manufacturers, suppliers, CJC 1295 Cream, HCG Injection 5000iu, IGF 1 LR3 Lyophilized, IGF 1 LR3 Tablet, Ipamorelin Pill, peptides healthy
