Acetyl tetrapeptide-5
is used in cosmetic eye formulations to decrease puffiness, eye bags, and dark circles by reducing edema and protecting proteins such as SOD from glycation
Alanine
Ala / A · hydrophobic residue · neutral charge
AOD-9604
is studied as an anti-obesity peptide that can reduce weight gain and increase fat oxidation in obese animal models with generally neutral effects on IGF-1 and glucose metabolism in early human trials
Arginine
Arg / R · basic residue · positive charge
Argireline
is a topical cosmetic peptide reported to decrease dynamic wrinkles by partially mimicking the mechanism of botulinum toxin in a non-invasive manner
Asparagine
Asn / N · polar residue · neutral charge
Aspartic acid
Asp / D · acidic residue · negative charge
BPC-157
is investigated for accelerating healing of gastrointestinal mucosa, tendons, ligaments, bone, and nervous tissue in preclinical models, with anti-inflammatory and pro-angiogenic effects
Comparison
While CJC-1295 is used in research to chronically elevate endogenous growth hormone and IGF-1 levels, enabling studies of body composition, metabolic, and anti-aging effects of prolonged GH exposure10, MGF is upregulated in muscle after mechanical overload, where it supports tissue repair and growth; recombinant forms are studied for regenerative and performance-enhancement effects22138.
While CJC-1295 works as a tetrasubstituted 29-amino-acid analog of GHRH(1–29) that acts as a potent agonist at the GHRH receptor and, in its DAC form, covalently binds serum albumin to extend half-life from minutes to days, resulting in sustained pulsatile GH and IGF-1 increase1082, MGF is a 24-amino-acid E-peptide splice variant of IGF-1 (IGF-1Ec) produced in mechanically stressed or damaged muscle that activates IGF1R and local anabolic pathways involved in muscle repair and hypertrophy22138144.
CJC-1295
GHRH
MGF
IGF1
CJC-1295 and MGF are noticeably different, with limited direct overlap in their usual biological context. Their typical research and application settings separate fairly clearly: CJC-1295 is more often discussed in the realm of Metabolic and endocrine and Aging and longevity, whereas MGF is more often associated with the realm of Musculoskeletal health. Their biological logic is quite different: CJC-1295 is a receptor agonist and a hormone analog, whereas MGF is a growth factor mimetic and a signaling modulator. CJC-1295 has a more synthetic analog origin, while MGF is closer to natural endogenous background and both are still best understood as being in Preclinical development. CJC-1295 takes the form of a peptide conjugate, whereas MGF is closer to a linear peptide, CJC-1295 incorporates d-amino acid substitution features that are not part of MGF; while their sequence patterns also diverge, with CJC-1295 showing alpha-helical domain features and MGF showing protein-mimetic sequence features.