LP17 TFA
Based on 3 publication(s) in Google Scholar
LP17 (LQVTDSGLYRCVIYHPP) TFA is a BBB-penetrable triggering receptor expressed on myeloid cells (TREM-1) inhibitory peptide. LP17 TFA substantially alleviates ischemia-induced infarction and neuronal injury. LP17 TFA can get access into brain and block TREM-1.
For research use only. We do not sell to patients.
- Purity: 99.18%
- Formula: C89H137N23O25S.xC2HF3O2
- Molecular Weight:1961.24 (free base)
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Storage:
Sealed storage, away from moisture and light.
Powder -80°C, 2 years , -20°C, 1 year* In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light)
Publications Citing Use of MedChemExpress (MCE) LP17 TFA
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Flow Cytometry
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In Vivo Efficacy Study
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IF
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IF
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RT-PCR
Biological Activity
TREM-1[1]
LP17 (1 or 10 μM; 24 h) TFA substantially decreases mRNA levels of pro-inflammatory cytokines and chemokines after reoxygenation and remarkably attenuates extracellular protein levels of IL-1β and IL-18 in a microglia oxygen-glucose deprivation (OGD) model[1].
LP17 (10 μM; 24 h) TFA interacts with microglial SYK[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Cell Line:Primary microglia
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Concentration:1 or 10 μM
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Incubation Time:24 h
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Result:Decreased mRNA levels of NLRP3, IL-1β, IL-18, IL-6, CD16, CD32, iNOS, MCP-1, CXCL-1, and CXCL-2 after reoxygenation.
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Cell Line:Primary microglia
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Concentration:10 μM
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Incubation Time:24 h
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Result:Suppressed ischemia/reperfusion-induced increments in CARD9, p-p65 in CARD9/NF-κB signaling and NLRP3, ASC, cleaved caspase-1, mature IL-1β, and mature IL-18 in NLRP3/caspase-1 signaling in a microglia oxygen-glucose deprivation (OGD) model.
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Animal Model:Adult male C57BL/6J mice (20-25 g), mice cerebral ischemia/reperfusion (I/R) model induced by middle cerebral artery occlusion (MCAO)[1]
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Dosage:0.5 mg/kg or 1 mg/kg
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Administration:Intranasal administration, once daily for 3 consecutive days after MCAO
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Result:Abolished ischemia-induced TREM-1 elevation at 1 mg/kg.
Significantly reduced infarct volume by 27.3%, induced a markedly reduction in TUNEL positive cells and FJC positive neurons at 1 mg/kg.
Rescued neurological deficits and cognitive dysfunction of MCAO mice. Inhibited microglial M1 polarization and neutrophil infiltration.
Chemical Information
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Appearance Solid
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Molecular Weight 1961.24 (free base)
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Formula C89H137N23O25S.xC2HF3O2
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Color White to off-white
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Synonyms
LQVTDSGLYRCVIYHPP TFA
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Sequence
Leu-Gln-Val-Thr-Asp-Ser-Gly-Leu-Tyr-Arg-Cys-Val-Ile-Tyr-His-Pro-Pro
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Sequence Shortening
LQVTDSGLYRCVIYHPP
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Sealed storage, away from moisture and light
Powder -80°C 2 years -20°C 1 year * In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light)
Publications (3)
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Journal Impact Factor
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Most Recent
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J Adv Res
Targeting mesenchymal monocyte-derived macrophages to enhance the sensitivity of glioblastoma to temozolomide by inhibiting TNF/CELSR2/p65/Kla-HDAC1/EPAS1 axis. [Abstract]2025 May 13:S2090-1232(25)00351-0. PMID: 40373963
LP17 TFA purchased from MedChemExpress. Usage Cited in: J Adv Res. 2025 May 13:S2090-1232(25)00351-0. [Abstract]
Representative FCM plots and summary data showing the percentage of TREM1hi MDM in mouse model with the indicated treatment (n=5). FCM analysis revealed a significant decrease in the proportion of MES-MDM following LP17 (25 mL/kg; i.v.; once every five days) treatment in the mouse model.
LP17 TFA purchased from MedChemExpress. Usage Cited in: J Adv Res. 2025 May 13:S2090-1232(25)00351-0. [Abstract]
Survival curve of GBM-bearing mice (n = 5 mice/group). The results showed that administration of anti-PD-1 (200 µg/mouse; i.v.; once every five days) with LP17 (25 mL/kg; i.v.; once every five days) achieved combinatorial therapeutic benefits by extending animal survival.
LP17 TFA purchased from MedChemExpress. Usage Cited in: J Adv Res. 2025 May 13:S2090-1232(25)00351-0. [Abstract]
Representative images of multiplexed immunostaining from brains of GBM-bearing mice with anti-PD-1 and/or LP17 (25 mL/kg; i.v.; once very five days) treatment.
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FASEB J
TREM-1 Promotes Microglial Pyroptosis and Mitochondrial Fission in Intracerebral Hemorrhage via the PI3K/AKT Pathway. [Abstract]2025 Oct 15;39(19):e71115. PMID: 41065767 -
Eur J Oral Sci
Effect of blockage of Trem1 on the M1 polarization of macrophages in the regulation dental pulp inflammation. [Abstract]2024 Oct;132(5):e13018. PMID: 39267299
LP17 TFA purchased from MedChemExpress. Usage Cited in: Eur J Oral Sci. 2024 Oct;132(5):e13018. [Abstract]
The representative immunofluorescence images of M1 polarization of RAW264.7 macrophage with the treatment of LP17 (1 µg/µL; 48 h) or equal amount of PBS, indicated by DAPI, anti-CD68 and CD86 (n = 3). The results showed that blocking Trem1 with LP17 significantly reduced the mean fluorescence intensity of CD86.
LP17 TFA purchased from MedChemExpress. Usage Cited in: Eur J Oral Sci. 2024 Oct;132(5):e13018. [Abstract]
LP17 (1 µg/µL; 48 h) downregulated the mRNA expression of M1 polarization-associated markers—TNF-α, iNOS, and CD86—in RAW264.7 macrophages by inhibiting Trem1.
Solvent & Solubility
H2O : 3.33 mg/mL (Need ultrasonic)
Purity & Documentation
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Data Sheet (276 KB)
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SDS (252 KB)
- English - EN (252 KB)
- Français - FR (252 KB)
- Deutsch - DE (252 KB)
- Norwegian - NO (252 KB)
- Español - ES (252 KB)
- Swedish - SV (252 KB)
- Italian - IT (252 KB)
- Korean - KR (252 KB)
- Portuguese - PT (252 KB)
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Handling Instructions (2659 KB)
References
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)