Side-by-side · Research reference

LiraglutidevsPTD-DBM

Side-by-side comparison across mechanism, dosage, evidence, side effects, administration, and stack synergies. Citations on every claim where available.

AFDA-ApprovedFlagship14/45 cited

BAnimal-StrongHUMAN-REVIEWED10/40 cited

Liraglutide

Daily GLP-1 RA · FDA-Approved

0.6–3.0 mgDaily doseSAXENDA (liraglutide) injectio 2014

5–10%Body-weight ↓SAXENDA (liraglutide) injectio 2014

~13 hrHalf-lifeSAXENDA (liraglutide) injectio 2014

SQ · Abdomen / thigh / arm · Once daily

PTD-DBM

Wnt Pathway Activator · Fusion Peptide

Topical / SQAdministrationLee 2023 Ryu 2023

Animal-onlyEvidence level

Wnt/β-cateninPrimary pathway

Topical / SQ · Study-dependent

01Mechanism of Action

Parameter

Liraglutide

PTD-DBM

Primary target

GLP-1 receptor (GLP-1R)SAXENDA (liraglutide) injectio 2014

CXXC5–Dishevelled protein-protein interaction

Pathway

GLP-1R agonism → ↑glucose-dependent insulin, ↓glucagon, ↓gastric emptying, ↓appetiteSAXENDA (liraglutide) injectio 2014 Marso 2016

Inhibit CXXC5 binding to Dishevelled → Release Wnt/β-catenin pathway inhibitionLee 2015 Ryu 2023

Downstream effect

Glycemic improvement, modest body-weight reduction, cardiovascular event reduction in high-risk T2DMarso 2016

Activated Wnt/β-catenin signaling promotes hair follicle regeneration, dermal stem cell activation, reduced myofibroblast differentiation

Feedback intact?

Glucose-dependent insulin release preserves physiological feedback

Not applicable — pathway derepression rather than receptor agonism

Origin

Modified GLP-1(7-37) with Lys26 substitution (Arg34) and C-16 palmitoyl-glutamate acylation for albumin bindingSAXENDA (liraglutide) injectio 2014

Engineered fusion: cell-penetrating PTD sequence + Dvl-binding motif targeting CXXC5

Antibody development

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02Dosage Protocols

Parameter

Liraglutide

PTD-DBM

Standard dose (T2D, Victoza)

1.2–1.8 mg / daySAXENDA (liraglutide) injectio 2014

—

Standard dose (weight, Saxenda)

3.0 mg / day (after 5-week titration)SAXENDA (liraglutide) injectio 2014

—

Frequency

Once daily, same time each day

—

Titration schedule

0.6 → 1.2 → 1.8 → 2.4 → 3.0 mg over 5 weeks

Mitigates GI side effects.

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Evidence basis

FDA-approved · Phase 3 RCTs (LEADER, SCALE)Marso 2016 SAXENDA (liraglutide) injectio 2014

Animal models only (mice)

Duration

Indefinite for chronic indication

—

Reconstitution

Pre-filled commercial pen (no reconstitution)

—

Timing

Any time of day; consistent

—

Half-life

~13 hrSAXENDA (liraglutide) injectio 2014

—

Wound healing protocol

—

Hydrogel patch delivery (concentration not disclosed)

Pyrogallol-HA patch, murine model.

Hair regeneration protocol

—

Topical application (exact dose not disclosed)

Wound-induced hair neogenesis model, mice.

Co-administration

—

Valproic acid (GSK-3β inhibitor) for wound healing synergyLee 2023

Combined treatment maximized scar reduction.

Human translation

—

No published human studies

04Side Effects & Safety

Parameter

Liraglutide

PTD-DBM

GI symptoms

Nausea, vomiting, diarrhea (very common during titration)SAXENDA (liraglutide) injectio 2014

—

Pancreatitis risk

Rare; discontinue if suspected

—

Thyroid C-cell tumours

Boxed warning — contraindicated in MEN2 / MTC historySAXENDA (liraglutide) injectio 2014

—

Hypoglycemia

Low risk as monotherapy; elevated with sulfonylureas / insulin

—

Heart rate

Modest ↑ resting HR (~2-3 bpm)

—

Cardiovascular benefit

↓ MACE in high-risk T2D (LEADER trial)Marso 2016

—

Pregnancy / OB

Contraindicated

—

Reported adverse events

—

None reported in animal studies

Wnt pathway activation risks

—

Theoretical risk of aberrant proliferation; Wnt dysregulation linked to tumorigenesis

Long-term safety

—

Unknown — no chronic dosing or human data

Delivery vehicle effects

—

HA-PG hydrogel well-tolerated in mice; human translation pending

Absolute Contraindications

Liraglutide

·MTC personal or family history; MEN2
·Pregnancy / breastfeeding
·Hypersensitivity to liraglutide

PTD-DBM

·Active malignancy (Wnt pathway involvement in tumorigenesis)
·Pregnancy / lactation (no safety data)

Relative Contraindications

Liraglutide

·Severe gastroparesis
·History of pancreatitis
·Severe gastrointestinal disease

PTD-DBM

·History of Wnt-driven tumors
·Skin lesions with uncertain malignant potential

05Administration Protocol

Parameter

Liraglutide

PTD-DBM

1. Reconstitution / device

Commercial pre-filled pen, no reconstitution required.

Pyrogallol-functionalized hyaluronic acid (HA-PG) hydrogel patch loaded with PTD-DBM peptide, applied directly to wound bed. Adhesive hydrogel provides sustained release over multiple days.Lee 2023

2. Injection site

SQ — abdomen, thigh, or upper arm. Rotate sites.

Topical application to scalp or wound site. Precise formulation not disclosed; studies used Cxxc5 knockout or direct peptide application in wound-induced hair neogenesis models.Ryu 2023

3. Timing

Once daily, same time each day. Take with or without food.

PTD-DBM + valproic acid (GSK-3β inhibitor) in HA-PG patch showed synergistic effect on scar reduction and regenerative wound healing. VPA enhances Wnt pathway activation downstream.Lee 2023

4. Storage

Refrigerate 2–8 °C unopened; room temp ≤30 °C up to 30 days after first use.

Not disclosed in available literature. Peptide stability and storage conditions not published.

5. Needle

Pen-supplied 32G needle.

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