Description
KLOW Blend – Technical Biochemical Mechanism Profile
GHK-Cu + KPV + BPC-157 + TB500 (Thymosin β4 fragment)
The blend combines four peptides with complementary actions across wound biology, angiogenesis, ECM remodeling, and inflammation resolution. Mechanistically, the constituents converge on PI3K–Akt, MAPK/ERK, NF-κB modulation, TGF-β/SMAD, and VEGF/eNOS axes, with distinct primary triggers per peptide.
1) GHK-Cu (Gly-His-Lys–Cu²⁺ complex)
Primary interactions
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Copper chelation & delivery: Facilitates copper-dependent enzymes (e.g., lysyl oxidase, superoxide dismutase 1) and matrix crosslinking.
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Integrin/ECM signaling: Binds/heparin-affinity ECM; influences focal adhesion signaling.
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Growth factor crosstalk: Upregulates VEGFA, FGF2, TGF-β in repair models.
Core pathways & enzymes
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PI3K → Akt, Ras/Raf → MEK → ERK1/2
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eNOS (NOS3) activation → NO output (endothelial migration)
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LOX (collagen/elastin crosslinking), SOD1 (antioxidant)
Representative gene targets
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ECM/Remodeling: COL1A1, COL3A1, FN1, MMP2, MMP9, TIMP1
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Angiogenesis: VEGFA, KDR/VEGFR2, ANGPT1
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Antioxidant: SOD1, GPX1, CAT
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Integrin/focal adhesion: ITGB1, PXN (paxillin), VCL (vinculin)
Second messengers: NO, Ca²⁺, ERK1/2 phosphorylation
2) KPV (Lys-Pro-Val; α-MSH/MC1R-mimetic tripeptide)
Primary interactions
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MC1R agonism (GPCR, Gs): In keratinocytes/immune cells; increases cAMP.
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NF-κB attenuation: Reduces pro-inflammatory transcription.
Core pathways & enzymes
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cAMP → PKA → CREB (anti-inflammatory/repair gene programs)
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NF-κB down-modulation (↓ p65 nuclear translocation)
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MAPK/ERK context-dependent tuning
Representative gene targets
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↓ Pro-inflammatory: TNFA, IL1B, IL6, PTGS2 (COX-2)
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↑ Resolution: IL10, TGFB1
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Barrier/repair: CLDN1, OCLN, KRT14
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Antimicrobial peptides: DEFB4A (hBD-2)
Second messenger: cAMP↑, with downstream PKA/CREB
3) BPC-157 (Pentadecapeptide)
Primary interactions
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Angiogenic axis priming: Upregulates VEGF–KDR and eNOS signaling in endothelial models.
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NF-κB modulation: Dampens cytokine output under inflammatory stimuli.
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Cytoskeletal/focal adhesion support: Promotes cell migration and coverage.
Core pathways & enzymes
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PI3K → Akt → eNOS phosphorylation → NO
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MEK/ERK (proliferation/migration)
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NF-κB suppression (transcriptional)
Representative gene targets
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Angiogenesis: VEGFA, KDR/VEGFR2, NOS3
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ECM remodeling: MMP2, MMP9, COL1A1, FN1
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Inflammation: ↓ TNFA, IL1B, IL6; ↑ IL10
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Survival: BCL2, MCL1
Second messengers: NO, ERK1/2, Akt phosphorylation
4) TB500 (Thymosin β4–derived fragment; actin modulator)
Primary interactions
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G-actin binding/sequestration: Regulates G-actin ↔ F-actin dynamics; enhances lamellipodia formation and motility.
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Endothelial migration & tubulogenesis: Facilitates angiogenic morphogenesis.
Core pathways & enzymes
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PI3K–Akt (survival/motility), Ras/Raf → ERK1/2 (immediate-early genes)
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eNOS activation in endothelial contexts
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Cytoskeletal regulators: Profilin (PFN1), Cofilin (CFL1), Arp2/3 complex
Representative gene targets
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Cytoskeleton: ACTB, ACTG1, PFN1, CFL1, ARPC2
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ECM/Remodeling: MMP2, MMP9, COL1A1, FN1
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Angiogenesis: VEGFA, KDR, HIF-1A
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Survival/Metabolism: BCL2, mTOR components
Second messengers: NO, ERK1/2, Ca²⁺ (motility dynamics)
Convergent Pathways Across the Blend
| Axis | Mechanistic Convergence | Key Readouts (common) |
|---|---|---|
| Angiogenesis | VEGF–KDR → PI3K/Akt → eNOS → NO (GHK-Cu, BPC-157, TB500) | VEGFA, KDR, NOS3, HIF-1A |
| ECM Remodeling & Migration | ERK1/2, MMP2/9, integrin/focal adhesion signaling | MMP2, MMP9, COL1A1, FN1, ITGB1 |
| Inflammation Resolution | KPV (MC1R → cAMP/PKA/CREB) + BPC-157 (NF-κB↓) | ↓ TNFA/IL1B/IL6/PTGS2; ↑ IL10/TGFB1 |
| Antioxidant/Redox | Copper-dependent enzymes (GHK-Cu) + survival signaling | SOD1/2, GPX1, CAT |
| Cytoskeleton/Motility | TB500 actin dynamics; GHK-Cu focal adhesion crosstalk | ACTB, PFN1, CFL1, ARPC genes |
Key Enzymes & Effectors (Blend-Level)
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eNOS (NOS3) → NO (endothelial migration/vasodynamics)
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PI3K, Akt, ERK1/2 → proliferation/migration/survival transcription
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MMP-2 / MMP-9 → ECM remodeling
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NF-κB module (p65) → cytokine transcription (KPV/BPC-157 dampening)
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LOX, SOD1 (GHK-Cu–linked) → collagen crosslinking, redox balance
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Actin regulators (PFN1, CFL1, Arp2/3) → TB500 cytoskeletal control
Suggested Research Gene Panel (for qPCR/RNA-seq)
Angiogenesis: VEGFA, KDR, ANGPT1, NOS3, HIF1A
ECM/Remodeling: COL1A1, COL3A1, FN1, MMP2, MMP9, TIMP1
Inflammation: TNFA, IL1B, IL6, PTGS2, IL10, TGFB1, NFKB1
Cytoskeleton/Motility: ACTB, PFN1, CFL1, ARPC2, VCL, PXN
Redox/Survival: SOD1/2, GPX1, CAT, BCL2, MCL1
Mechanistic Summary
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GHK-Cu: ECM/angiogenic upregulation, copper-enzyme support, PI3K/ERK, eNOS/NO
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KPV: MC1R→cAMP/PKA/CREB; NF-κB attenuation; anti-inflammatory gene profile
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BPC-157: PI3K/Akt→eNOS; ERK; NF-κB down-modulation; angiogenic/ECM genes
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TB500: Actin dynamics; PI3K/ERK; eNOS; migration and tubulogenesis
Together, the blend targets vascular sprouting, matrix remodeling, inflammation resolution, and cell motility in vitro via coordinated cAMP/PKA, PI3K–Akt, ERK1/2, NO/eNOS, and NF-κB control.
Research-Only Classification
This blend is supplied exclusively for in-vitro laboratory research.
Not approved for human or animal administration, ingestion, injection, or any therapeutic/diagnostic use.

