Research Peptides
Directory
A research-first overview of today’s most studied peptide pathways.
A clear, organized overview of today’s most studied research peptides — grouped by biological pathway for easy navigation. No hype. No marketing claims. Just concise, research-based summaries designed to help you understand how each peptide functions at the signaling level.
Explore Peptides by Biological Pathway
Tissue Repair & Regeneration
Peptides frequently explored for cellular repair, tissue remodeling, angiogenesis, and recovery-related signaling pathways.
Fat-Mobilization & Body Composition
Compounds investigated for roles in adipose signaling, GH-related pathways, and research models involving fat metabolism and body-composition mechanisms.
Growth & Anabolic Signaling
Signaling compounds linked to growth-factor pathways, anabolic cascades, and tissue development models.
Neural & Cognitive Pathways
Peptides explored for neurotrophic signaling, cognition-based research, and stress-response modulation.
Tissue Repair & Regeneration
Peptides in this group are frequently discussed in research models of
soft-tissue healing, angiogenesis, and structural recovery.
Peptides in this pathway:
• BPC-157
• TB-500
• GHK-Cu
• Thymosin Beta-4
Fat-Mobilization & Body Composition
Peptides in this category are discussed in research involving adipose signaling, metabolic regulation, growth-hormone pathways, and models related to changes in body composition.
Peptides in this pathway:
• Tesamorelin
• AOD-9604
• Semaglutide
• Sermorelin
Metabolic Signaling & Energy
Body:
Peptides noted in research for influencing mitochondrial activity, cellular energy regulation, and metabolic balance.
Peptides in this pathway:
• MOTS-c
• 5-Amino-1MQ
• IGF-1 LR3
• CJC-1295 + Ipamorelin
Growth & Anabolic Signaling
Signaling compounds linked to growth-factor pathways, anabolic cascades, muscle development, and tissue-repair models.
Peptides in this pathway:
• IGF-1 LR3
• CJC-1295 + Ipamorelin
• Tesamorelin
Neural & Cognitive Pathways
Peptides explored for neurotrophic signaling, cognition-based research, learning models, stress-response modulation, and neuro-adaptive processes.
Peptides in this pathway:
• Selank
• Semax
Tissue Repair & Regeneration
Peptides in this group are frequently discussed in research models of soft-tissue healing, angiogenesis, and structural recovery — from tendons and ligaments to skin and mucosal barriers.
BPC-157
Often highlighted in research circles for its association with soft-tissue recovery models, gut barrier studies, and scenarios where connective tissues are under stress.
Layer 2 — Mechanism Snapshot:
BPC-157 is a synthetic sequence based on a naturally occurring gastric peptide. Cell and animal studies suggest it interacts with nitric-oxide signaling, supports angiogenesis, and influences inflammatory pathways tied to tissue repair.
TB-500
Frequently discussed in tendon, ligament, and muscle-repair research models, especially in scenarios involving physical stress or overuse.
Layer 2 — Mechanism Snapshot:
TB-500 is derived from thymosin beta-4, a peptide involved in actin regulation and cell migration. Experimental findings point to roles in angiogenesis, cytoskeletal organization, and pathways associated with tissue regeneration.
GHK-Cu
Commonly referenced in skin-care and aesthetic research for its role in cosmetic formulations targeting skin texture, tone, and visible signs of aging.
Layer 2 — Mechanism Snapshot:
GHK-Cu is a naturally occurring copper-binding tripeptide. Studies suggest it can influence gene expression related to extracellular matrix production, collagen and glycosaminoglycan synthesis, antioxidant defenses, and wound-healing processes at the tissue level.
Thymosin Beta-4
Frequently discussed in tendon, ligament, and muscle-repair research models, especially in scenarios involving physical stress or overuse.
Layer 2 — Mechanism Snapshot:
TB-500 is derived from thymosin beta-4, a peptide involved in actin regulation and cell migration. Experimental findings point to roles in angiogenesis, cytoskeletal organization, and pathways associated with tissue regeneration.
Fat-Mobilization & Body Composition
Peptides in this category are discussed in research involving adipose signaling, metabolic regulation, growth-hormone pathways, and models related to changes in body composition.
Tesamorelin
Frequently highlighted in discussions around visceral fat research, body-composition studies, and models where growth-hormone–related pathways are of interest.
Layer 2 — Mechanism Snapshot:
Tesamorelin is a synthetic analogue of growth hormone–releasing hormone (GHRH). In research, it has been shown to stimulate pulsatile growth hormone release from the pituitary, elevate downstream IGF-1 signaling, and influence metabolic pathways linked to lipolysis and fat redistribution.
AOD-9604
Often mentioned in the context of experimental fat-metabolism studies and cosmetic or weight-management–oriented research discussions.
Layer 2 — Mechanism Snapshot:
AOD-9604 is a fragment of human growth hormone (amino acids 176–191). Preclinical work suggests it may preferentially engage signaling related to lipolysis and fat oxidation without reproducing the broader growth-promoting effects of full-length growth hormone.
Semaglutide
Widely discussed in metabolic and appetite-regulation research, especially in models exploring glucose control and changes in body weight over time.
Layer 2 — Mechanism Snapshot:
Semaglutide is a GLP-1 receptor agonist. It mimics the actions of endogenous glucagon-like peptide-1, enhancing glucose-dependent insulin secretion, slowing gastric emptying, and modulating appetite-related signaling in the brain — mechanisms that, in research, are linked to changes in food intake and metabolic control.
Sermorelin
Appears in research and clinical discussions involving growth-hormone dynamics, body-composition changes, and age-related shifts in GH secretion patterns.
Layer 2 — Mechanism Snapshot:
Sermorelin is a synthetic analogue of the first 29 amino acids of GHRH. It acts at the pituitary to stimulate physiologic, pulsatile release of growth hormone, which in turn can influence IGF-1 production and downstream pathways involved in metabolism, recovery, and body-composition signaling.
Metabolic Signaling & Energy Pathways
Peptides in this category are frequently discussed in the context of mitochondrial activity, cellular energy output, oxidative balance, and metabolic signaling pathways that influence endurance, recovery, and performance.
MOTS-c
Often referenced in metabolic, endurance, and mitochondrial function research, particularly in models focused on glucose utilization, fatigue resistance, and cellular stress responses.
Layer 2 — Mechanism Snapshot:
MOTS-c is a mitochondrial-derived peptide (MDP). Experimental findings suggest it may influence AMPK activation, enhance glucose uptake, and support adaptive responses to metabolic and oxidative stress through cell-signaling pathways that regulate energy balance.
5-Amino-1MQ
Frequently discussed in research examining adipocyte regulation, metabolic output, and pathways involved in energy expenditure and fat utilization.
Layer 2 — Mechanism Snapshot:
5-Amino-1MQ is explored for its relationship with NNMT (nicotinamide N-methyltransferase) inhibition. Preclinical studies suggest that modulating NNMT activity may influence NAD+ metabolism, mitochondrial efficiency, and cellular energy expenditure.
IGF-1 LR3
Widely mentioned in growth-factor, recovery, and performance-related research, especially in models exploring muscle repair, adaptation, and nutrient-signaling pathways.
Layer 2 — Mechanism Snapshot:
IGF-1 LR3 is a long-acting analogue of insulin-like growth factor-1. It interacts with IGF-1 receptors and downstream PI3K/AKT signaling, pathways associated with protein synthesis, nutrient partitioning, and cellular growth regulation.
CJC-1295 + Ipamorelin
Regularly noted in discussions involving growth-hormone secretagogue activity, recovery-support models, and metabolic pathways linked to tissue repair and performance.
Layer 2 — Mechanism Snapshot:
CJC-1295 acts as a GHRH analogue, while Ipamorelin is a ghrelin-receptor agonist. Together, they can stimulate GH release via complementary pathways — supporting IGF-1 signaling, recovery processes, and energy-metabolism modulation in research contexts.
Growth & Anabolic Signaling
Peptides in this category are frequently discussed in research related to muscle development, strength progression, recovery support, and pathways involving growth hormone, IGF-1, and anabolic signaling cascades.
IGF-1
Frequently examined in growth-factor research, muscle adaptation models, and studies exploring cellular recovery, tissue growth, and protein-synthesis mechanisms.
Layer 2 — Mechanism Snapshot:
IGF-1 interacts with IGF-1 receptors and downstream PI3K/AKT/mTOR signaling. Research indicates that these pathways regulate muscle fiber development, nutrient partitioning, and recovery-oriented anabolic processes.
CJC-1295 (No DAC)
Frequently discussed in research focused on growth hormone pulsatility, recovery-support models, and metabolic pathways influenced by short-duration GHRH analogues.
Layer 2 — Mechanism Snapshot:
CJC-1295 (No DAC) is a short-acting GHRH analogue designed to stimulate physiologic, pulsatile GH release. Its shorter half-life results in signaling dynamics that differ from the DAC form, which may influence IGF-1 production and anabolic pathways in research models.
Hexarelin
Referenced in studies involving GH secretagogue activity, muscle-repair pathways, and the body’s adaptive responses to training stress and recovery cycles.
Layer 2 — Mechanism Snapshot:
Hexarelin is a potent GHS (growth hormone secretagogue) that interacts with ghrelin receptors, stimulating GH release. Research also explores its roles in cellular repair mechanisms, cardiovascular signaling, and anabolic pathways.
Ipamorelin
Commonly discussed in research involving GH modulation, muscle support, recovery optimization, and body-composition dynamics.
Layer 2 — Mechanism Snapshot:
Ipamorelin is a selective ghrelin-receptor agonist that stimulates GH release without significantly affecting cortisol or prolactin. Research models examine its impact on recovery, anabolic signaling, and metabolism-supporting pathways.
Neural & Cognitive Pathways
Peptides in this category are frequently discussed in research related to mood regulation, focus, learning, memory, stress resilience, and neurotrophic signaling in the brain.
Selank
Frequently mentioned in research on anxiety-like states, stress response, and cognitive performance, especially in models examining calm focus and resilience under pressure.
Layer 2 — Mechanism Snapshot:
Selank is a synthetic peptide analogue based on tuftsin. Experimental work suggests it may modulate GABAergic and monoaminergic systems, influence BDNF expression, and support anxiolytic and pro-cognitive effects in preclinical models.
Semax
Commonly referenced in studies involving attention, learning, and neuroprotection, as well as models where mental fatigue and cognitive workload are of interest.
Layer 2 — Mechanism Snapshot:
Semax is a synthetic peptide analogue derived from ACTH fragments. Research suggests it may influence neurotrophin (including BDNF) signaling, antioxidant defense mechanisms, and synaptic plasticity pathways involved in learning and memory.
DSIP (Delta Sleep-Inducing Peptide)
Discussed in research models related to sleep architecture, recovery quality, and stress-response modulation, particularly in the context of deep or restorative sleep phases.
Layer 2 — Mechanism Snapshot:
DSIP is a neuropeptide originally identified in relation to sleep regulation. Experimental data explore its potential influence on GABAergic and neuroendocrine pathways, as well as its role in stress adaptation and recovery-supportive signaling.
A Smarter Way to Explore Peptide Research
This directory brings together today’s most referenced research peptides —
organized by biological pathway, signaling type, and research focus.
Use these summaries as a foundation for learning:
not as a substitute for professional guidance, medical advice,
or primary scientific literature.
Peptides are active areas of study. Their signaling,
mechanisms, and applications are still being understood
through ongoing research.
Where to go next:
• Explore “How Peptides Work” for deeper signaling breakdowns.
• Visit individual peptide pages for focused research summaries.
• Learn how pathways interact across metabolic, regenerative,
and cognitive systems.
• Use this directory as a map — not a prescription.
Scientific Disclaimer:
The content on this page is for educational and informational purposes only.
Peptides discussed here relate to general biological research concepts and
are not approved for human use, treatment, or therapeutic application.
Nothing described should be interpreted as medical advice.