Date published: 2025-10-16

1-800-457-3801

SCBT Portrait Logo
Seach Input

TLR1 Activators

TLR1 Activators are a group of compounds that can enhance the function of TLR1, either directly or indirectly, through their actions on various biochemical and cellular pathways. The direct activators, such as Pam3CSK4 and FSL-1, are synthetic lipopeptides that mimic bacterial lipoproteins and strongly activate the TLR1 and TLR2 pathway, leading to NF-κB activation and pro-inflammatory cytokine production. On the other hand, indirect activators, such as LPS andMPLA, stimulate TLR4, which indirectly enhances TLR1 activity by promoting the formation of more responsive TLR1/2 heterodimers. Similarly, Poly(I:C) and Flagellin, activators of TLR3 and TLR5 respectively, trigger a signaling cascade that indirectly enhances TLR1 activity by inducing the release of pro-inflammatory cytokines that upregulate the expression of TLR1/2 heterodimers.There is a set of indirect activators that include Imiquimod, Resiquimod, Gardiquimod, and Loxoribine, which are agonists of TLR7, TLR9, and TLR8. These compounds stimulate the release of pro-inflammatory cytokines, which in turn can enhance TLR1 activity by increasing the expression of TLR1/2 heterodimers and their responsiveness to their ligands. Zymosan, a glucan with repeating glucose units, activates TLR2/6 heterodimers, indirectly enhancing TLR1 activity by promoting the formation of more responsive TLR1/2 heterodimers. Thus, TLR1 Activators represent a broad class of compounds that enhance TLR1 function by direct interaction or by modulating the activity of related Toll-like receptors and associated signaling pathways.
Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Pam3Cys-Ser-(Lys)4 trihydrochloride

112208-04-5sc-202271
2 mg
$423.00
(1)

Pam3Cys-Ser-(Lys)4 trihydrochloride is a potent TLR1 agonist that engages Toll-like receptors with high specificity, triggering robust immune signaling pathways. Its unique peptide structure enhances binding affinity, leading to effective receptor dimerization and downstream activation of NF-kB and MAPK pathways. The compound exhibits remarkable solubility and stability, which influences its kinetic profile and interaction with immune cells, ultimately shaping the inflammatory response.

Pam3Cys-Ser-(Lys)4, Hydrochloride

112208-00-1sc-507471
2 mg
$550.00
(0)

Pam3CSK4 is a synthetic triacylated lipopeptide that mimics the acylated amino terminus of bacterial lipoproteins and strongly activates the TLR1 and TLR2 pathway. Activation of these receptors by Pam3CSK4 leads to NF-κB activation and pro-inflammatory cytokine production, thus enhancing TLR1 function.

Lipopolysaccharide, E. coli O55:B5

93572-42-0sc-221855
sc-221855A
sc-221855B
sc-221855C
10 mg
25 mg
100 mg
500 mg
$96.00
$166.00
$459.00
$1615.00
12
(2)

Lipopolysaccharide (LPS) is a potent stimulator of TLR4, which can form a complex with MD-2 and CD14 leading to NF-κB activation. This event can indirectly enhance TLR1 activity by promoting the formation of TLR1/2 heterodimers, which are more responsive to their ligands.

Polyinosinic-polycytidylic acid potassium salt

31852-29-6sc-202767
5 mg
$194.00
(1)

Poly(I:C) is a synthetic analog of double-stranded RNA that activates TLR3. Activation of TLR3 triggers a signaling cascade that can indirectly enhance TLR1 activity by inducing the release of pro-inflammatory cytokines that upregulate the expression of TLR1/2 heterodimers.

Imiquimod

99011-02-6sc-200385
sc-200385A
100 mg
500 mg
$66.00
$278.00
6
(1)

Imiquimod is a TLR7 agonist that stimulates the release of pro-inflammatory cytokines. This event can indirectly enhance TLR1 activity by increasing the expression of TLR1/2 heterodimers and their responsiveness to their ligands.

Zymosan

9010-72-4sc-296863
sc-296863A
100 mg
1 g
$97.00
$587.00
1
(0)

Zymosan is a glucan with repeating glucose units, which activates TLR2/6 heterodimers. Activation of TLR2/6 can indirectly enhance TLR1 activity by promoting the formation of TLR1/2 heterodimers, which are more responsive to their ligands.

R-848

144875-48-9sc-203231
sc-203231A
sc-203231B
sc-203231C
5 mg
25 mg
100 mg
500 mg
$100.00
$300.00
$500.00
$1528.00
12
(1)

R-848 (Resiquimod) is a TLR7 and TLR8 agonist that stimulates the release of pro-inflammatory cytokines. This event can indirectly enhance TLR1 activity by increasing the expression of TLR1/2 heterodimers and their responsiveness to their ligands.

Gardiquimod

1020412-43-4sc-221663
sc-221663A
sc-221663B
sc-221663C
sc-221663D
sc-221663E
sc-221663F
25 mg
50 mg
100 mg
250 mg
5 g
10 g
25 g
$154.00
$276.00
$506.00
$1154.00
$19743.00
$32136.00
$69366.00
1
(1)

Gardiquimod is a specific TLR7 agonist that stimulates the release of pro-inflammatory cytokines. This event can indirectly enhance TLR1 activity by increasing the expression of TLR1/2 heterodimers and their responsiveness to their ligands.

Loxoribine

121288-39-9sc-203118
sc-203118A
25 mg
100 mg
$124.00
$390.00
1
(0)

Loxoribine is a potent TLR7 agonist that stimulates the release of pro-inflammatory cytokines. This event can indirectly enhance TLR1 activity by increasing the expression of TLR1/2 heterodimers and their responsiveness to their ligands.