Toll-like receptors (TLRs) are a class of proteins that play a key role in the innate immune system. They are single, membrane-spanning, non-catalytic receptors usually expressed in sentinel cells such as macrophages and dendritic cells, that recognize structurally conserved molecules derived from microbes. Once these microbes have breached physical barriers such as the skin or intestinal tract mucosa, they are recognized by TLRs, which activate immune cell responses. The TLRs include TLR1, TLR2, TLR3, TLR4, TLR5, TLR6, TLR7, TLR8, TLR9, TLR10, TLR11, TLR12, and TLR13. Toll-Like Receptors (TLRs) play a critical role in the early innate immune response to invading pathogens by sensing microorganism and are involved in sensing endogenous danger signals. TLRs are evolutionarily conserved receptors are homologues of the Drosophila Toll protein, discovered to be important for defense against microbial infection. TLRs recognize highly conserved structural motifs known as pathogen-associated microbial patterns (PAMPs), which are exclusively expressed by microbial pathogens.


Anti-infection >
Arenavirus Bacterial CMV Enterovirus Filovirus Fungal HBV HCV HIV HSV Influenza Virus Parasite Reverse Transcriptase RSV SARS-CoV
Antibody-drug Conjugate >
ADC Cytotoxin ADC Linker Drug-Linker Conjugates for ADC PROTAC-linker Conjugate for PAC
Apoptosis >
Apoptosis Bcl-2 Family c-Myc Caspase DAPK Ferroptosis IAP MDM-2/p53 PKD RIP kinase Survivin Thymidylate Synthase TNF Receptor
Autophagy >
Autophagy LRRK2 ULK Mitophagy
Cell Cycle/DNA Damage >
Antifolate APC ATM/ATR Aurora Kinase Casein Kinase CDK Checkpoint Kinase (Chk) CRISPR/Cas9 Deubiquitinase DNA Alkylator/Crosslinker DNA-PK DNA/RNA Synthesis Eukaryotic Initiation Factor (eIF) G-quadruplex Haspin Kinase HDAC HSP IRE1 Kinesin LIM Kinase (LIMK) Microtubule/Tubulin Mps1 Nucleoside Antimetabolite/Analog p97 PAK PARP PERK Polo-like Kinase (PLK) PPAR RAD51 ROCK Sirtuin SRPK Telomerase TOPK Topoisomerase Wee1
Cytoskeleton >
Arp2/3 Complex Dynamin Gap Junction Protein Integrin Kinesin Microtubule/Tubulin Mps1 Myosin PAK
Epigenetics >
AMPK Aurora Kinase DNA Methyltransferase Epigenetic Reader Domain HDAC Histone Acetyltransferase Histone Demethylase Histone Methyltransferase JAK MicroRNA PARP PKC Sirtuin Protein Arginine Deiminase
GPCR/G Protein >
5-HT Receptor Adenosine Receptor Adenylate Cyclase Adiponectin Receptor Adrenergic Receptor Angiotensin Receptor Bombesin Receptor Bradykinin Receptor Cannabinoid Receptor CaSR CCR CGRP Receptor Cholecystokinin Receptor CRFR CXCR Dopamine Receptor EBI2/GPR183 Endothelin Receptor GHSR Glucagon Receptor Glucocorticoid Receptor GNRH Receptor GPCR19 GPR109A GPR119 GPR120 GPR139 GPR40 GPR55 GPR84 Guanylate Cyclase Histamine Receptor Imidazoline Receptor Leukotriene Receptor LPL Receptor mAChR MCHR1 (GPR24) Melatonin Receptor mGluR Motilin Receptor Neurokinin Receptor Neuropeptide Y Receptor Neurotensin Receptor Opioid Receptor Orexin Receptor (OX Receptor) Oxytocin Receptor P2Y Receptor Prostaglandin Receptor Protease-Activated Receptor (PAR) Ras RGS Protein Sigma Receptor Somatostatin Receptor TSH Receptor Urotensin Receptor Vasopressin Receptor Melanocortin Receptor
Immunology/Inflammation >
Aryl Hydrocarbon Receptor CCR Complement System COX CXCR FLAP Histamine Receptor IFNAR Interleukin Related IRAK MyD88 NO Synthase NOD-like Receptor (NLR) PD-1/PD-L1 PGE synthase Salt-inducible Kinase (SIK) SPHK STING Thrombopoietin Receptor Toll-like Receptor (TLR) Arginase
JAK/STAT Signaling >
EGFR JAK Pim STAT
MAPK/ERK Pathway >
ERK JNK KLF MAP3K MAP4K MAPKAPK2 (MK2) MEK Mixed Lineage Kinase MNK p38 MAPK Raf Ribosomal S6 Kinase (RSK)
Membrane Transporter/Ion Channel >
ATP Synthase BCRP Calcium Channel CFTR Chloride Channel CRAC Channel CRM1 EAAT2 GABA Receptor GlyT HCN Channel iGluR Monoamine Transporter Monocarboxylate Transporter Na+/Ca2+ Exchanger Na+/HCO3- Cotransporter Na+/K+ ATPase nAChR NKCC P-glycoprotein P2X Receptor Potassium Channel Proton Pump SGLT Sodium Channel TRP Channel URAT1
Metabolic Enzyme/Protease >
15-PGDH 5 alpha Reductase 5-Lipoxygenase Acetyl-CoA Carboxylase Acyltransferase Adenosine Deaminase Adenosine Kinase Aldehyde Dehydrogenase (ALDH) Aldose Reductase Aminopeptidase Angiotensin-converting Enzyme (ACE) ATGL ATP Citrate Lyase Carbonic Anhydrase Carboxypeptidase Cathepsin CETP COMT Cytochrome P450 Dipeptidyl Peptidase Dopamine β-hydroxylase E1/E2/E3 Enzyme Elastase Enolase FAAH FABP Factor Xa Farnesyl Transferase Fatty Acid Synthase (FAS) FXR Glucokinase GSNOR Gutathione S-transferase HCV Protease Hexokinase HIF/HIF Prolyl-Hydroxylase HIV Integrase HIV Protease HMG-CoA Reductase (HMGCR) HSP Indoleamine 2,3-Dioxygenase (IDO) Isocitrate Dehydrogenase (IDH) Lactate Dehydrogenase LXR MAGL Mineralocorticoid Receptor Mitochondrial Metabolism MMP Nampt NEDD8-activating Enzyme Neprilysin PAI-1 PDHK PGC-1α Phosphatase Phosphodiesterase (PDE) Phospholipase Procollagen C Proteinase Proteasome Pyruvate Kinase RAR/RXR Renin ROR Ser/Thr Protease SGK Stearoyl-CoA Desaturase (SCD) Thrombin Tryptophan Hydroxylase Tyrosinase Xanthine Oxidase
Neuronal Signaling >
5-HT Receptor AChE Adenosine Kinase Amyloid-β Beta-secretase CaMK CGRP Receptor COMT Dopamine Receptor Dopamine Transporter FAAH GABA Receptor GlyT iGluR Imidazoline Receptor mAChR Melatonin Receptor Monoamine Oxidase nAChR Neurokinin Receptor Opioid Receptor Serotonin Transporter γ-secretase
NF-κB >
NF-κB IKK Keap1-Nrf2 MALT1
PI3K/Akt/mTOR >
Akt AMPK ATM/ATR DNA-PK GSK-3 MELK mTOR PDK-1 PI3K PI4K PIKfyve PTEN
PROTAC >
PROTAC E3 Ligase Ligand-Linker Conjugate Ligand for E3 Ligase PROTAC Linker PROTAC-linker Conjugate for PAC
Protein Tyrosine Kinase/RTK >
Ack1 ALK Bcr-Abl BMX Kinase Btk c-Fms c-Kit c-Met/HGFR Discoidin Domain Receptor DYRK EGFR Ephrin Receptor FAK FGFR FLT3 IGF-1R Insulin Receptor IRAK Itk PDGFR PKA Pyk2 ROS Src Syk TAM Receptor Trk Receptor VEGFR
Stem Cell/Wnt >
Casein Kinase ERK Gli GSK-3 Hedgehog Hippo (MST) JAK Notch Oct3/4 PKA Porcupine ROCK sFRP-1 Smo STAT TGF-beta/Smad Wnt YAP β-catenin γ-secretase
TGF-beta/Smad >
TGF-beta/Smad PKC ROCK TGF-β Receptor
Vitamin D Related >
VD/VDR
Others >
Androgen Receptor Aromatase Estrogen Receptor/ERR Progesterone Receptor Thyroid Hormone Receptor Others

TLR7/8 agonist 4

TLR7/8 agonist 4 (compound 41) is a potent TLR7/8 agonist. TLR7/8 agonist 4 has anti-cancer activity[1].

  • CAS Number: 2388520-33-8
  • MF: C18H24N6
  • MW: 324.42
  • Catalog: Toll-like Receptor (TLR)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Guretolimod

Guretolimod is a Toll-like receptor 7 (TLR7) agonist[1].

  • CAS Number: 1488364-57-3
  • MF: C24H34F3N5O4
  • MW: 513.55
  • Catalog: Toll-like Receptor (TLR)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

ODN 21595

ODN 21595 is a Guanine-Modified TLR7 and TLR9 inhibitor. ODN 21595 inhibits the release of IFN-α and IL-6 with no cytotoxic. ODN 21595 reduces the expression of CD86 and HLA-DR. ODN 21595 has the potential for the research of systemic lupus erythematosus (SLE)[1].

  • CAS Number: 1964506-28-2
  • MF:
  • MW:
  • Catalog: Toll-like Receptor (TLR)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Gardiquimod trifluoroacetate

Gardiquimod trifluoroacetate is a specific TLR7 agonist which can also inhibit HIV-1 reverse transcriptase.

  • CAS Number: 1159840-61-5
  • MF: C21H25F6N5O5
  • MW: 541.44
  • Catalog: HIV
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

1-(4-(aminomethyl)benzyl)-2-butyl-1H-imidazo[4,5-c]quinolin-4-ylamine

TLR7/8 agonist 1 is a toll-like receptor (TLR7)/TLR8 dual-agonistic imidazoquinoline.

  • CAS Number: 1258457-59-8
  • MF: C22H25N5
  • MW: 359.46700
  • Catalog: Toll-like Receptor (TLR)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Polvitolimod

Polvitolimod is a TLR7 agonist for treatment of cancer and infectious disease.

  • CAS Number: 2389988-81-0
  • MF: C13H14FN5O4
  • MW: 323.28
  • Catalog: Toll-like Receptor (TLR)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

ODN 20844

ODN 20844, a guanine-modified inhibitory oligonucleotide (INH-ODN), is a TLR7 and TLR9 (Toll-like receptor) inhibitor, and its parent is INH-ODN 2088. ODN 20844 disrupts TLR7- and TLR9-mediated immune cell immune responses. ODN 20844 sequence: 5'-TCCTGGCGc7GGGAAGT-3'[1].

  • CAS Number: 1964506-29-3
  • MF:
  • MW:
  • Catalog: Toll-like Receptor (TLR)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

TLR7/8 agonist 9

TLR7/8 agonist 9 (Compound 25a) is a TLR7/8 agonist, with EC50s of 40 nM and 23 nM for hTLR7/8. TLR7/8 agonist 9 has anti-tumor activity and improves the antitumor activity of PD-1/PD-L1 blockade. TLR7/8 agonist 9 can be used for research of cancer immunotherapy[1].

  • CAS Number: 2649170-17-0
  • MF: C20H26N6O
  • MW: 366.46
  • Catalog: Toll-like Receptor (TLR)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

PF-4878691

PF-4878691 is a potent and selective Toll-like receptor 7 (TLR7) agonist.

  • CAS Number: 532959-63-0
  • MF: C17H23N5O2S
  • MW: 361.46200
  • Catalog: Toll-like Receptor (TLR)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

TLR7/8 agonist 8

TLR7/8 agonist 8 (compound 24m) is a potent toll-like receptor 7/8 (TLR7/8) dual agonist, with EC50s of 27 and 12 nM for hTLR7 and hTLR8, respectively. TLR7/8 agonist 8 can improve the antitumor activity of PD-1/PD-L1 blockade[1].

  • CAS Number: 2649170-16-9
  • MF: C24H30N6O
  • MW: 418.53
  • Catalog: Toll-like Receptor (TLR)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

FSL-1

FSL-1 is a TLR2/6 agonist (also a putative TLR10 ligand). FSL-1 activates NF-κB. FSL-1 induces pro-inflammatory cytokines including IL-8, IL-1β, CCL20 and TNF-α in vitro. FSL-1 synergizes with IFNγ to induce CXCL10 release from melanoma cells.

  • CAS Number: 322455-70-9
  • MF: C84H140N14O18S
  • MW: 1666.158
  • Catalog: Toll-like Receptor (TLR)
  • Density: 1.2±0.1 g/cm3
  • Boiling Point: 1659.8±65.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 957.6±34.3 °C

RDR 02308

RDR 02308 is a TLR4-MyD88 binding inhibitor that inhibits full-length β-lactamase[1].

  • CAS Number: 4155-82-2
  • MF: C19H15N3O3
  • MW: 333.34
  • Catalog: Bacterial
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

1V209

1V209 (TLR7 agonist T7) is a Toll-like receptor 7 (TLR7) agonist and has anti-tumor effects. 1V209 can be conjugated with various polysaccharides to improve its water solubility, and enhance its efficacy, and maintain low toxicity[1][2].

  • CAS Number: 1062444-54-5
  • MF: C16H17N5O5
  • MW: 359.34
  • Catalog: Toll-like Receptor (TLR)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

freund's complete adjuvant

Complete Freund's adjuvant (CFA) is an immunoadjuvant emulsified with antigen by its discoverer Jules T. Freund to enhance an animal's immune response to an antigen. Complete Freund's adjuvant (CFA) is also an inducer of the Th1 immune response and a ligand of TLRs. Complete Freund's adjuvant (CFA) contains heat-killed inactive tuberculosis bacilli and consists of a paraffin oil-in-water emulsion. Complete Freund's adjuvant (CFA) stimulates a strong and durable immune response and can be used to induce persistent inflammatory pain models in mice, experimental autoimmune myocarditis (EAM) models, and more. Incomplete Freund's adjuvant (IFA) (HY-153808A) is another type of Freund's Adjuvant that stimulates a weaker immune response[1][2].

  • CAS Number: 9007-81-2
  • MF: C9H12FN3O5
  • MW: 261.20700
  • Catalog: Toll-like Receptor (TLR)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

ODN 2395

ODN 2395 is a C class oligodeoxynucleotide and can be used as vaccine adjuvant. ODN 2395 is also a TLR9 agonist. Sequence: 5'-tcgtcgttttcggcgc:gcgccg-3'[1].

  • CAS Number: 1254617-22-5
  • MF:
  • MW:
  • Catalog: Toll-like Receptor (TLR)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Desethyl chloroquine-d5

Desethyl chloroquine-d5 is deuterium labeled Desethyl chloroquine. Desethyl chloroquine is a major desethyl metabolite of Chloroquine. Chloroquine diphosphate is an inhibitor of autophagy and toll-like receptors (TLRs). Desethyl chloroquine possesses antiplasmodic activity[1][2].

  • CAS Number: 1261392-69-1
  • MF: C16H17D5ClN3
  • MW: 296.85
  • Catalog: Autophagy
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

ODN 1826

ODN 1826, a class B CpG ODN (oligodeoxynucleotide), is a TLR9 agonist. CpG ODN 1826 is an excellent immunostimulator that induces NO and iNOS production in the murine model. CpG ODN 1826 enhances cell apoptosis. ODN 1826 sequence: 5’-tccatgacgttcctgacgtt-3’[1][2][3].

  • CAS Number: 202668-42-6
  • MF:
  • MW:
  • Catalog: Toll-like Receptor (TLR)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

TLR7 agonist 7

TLR7 agonist 7 (compound IIb-26) is an TLR7 agonist with an EC50 value of ~4 nM[1].

  • CAS Number: 2380231-77-4
  • MF: C29H32N6O2
  • MW: 496.60
  • Catalog: Toll-like Receptor (TLR)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

ODN 2088

ODN 2088 is a potent TLR3, TLR7 and TLR9 inhibitor. ODN 2088 shows no cytotoxic. ODN 2088 inhibits the release of IFN-α and IL-6[1][2][3].

  • CAS Number: 1146541-45-8
  • MF:
  • MW:
  • Catalog: Toll-like Receptor (TLR)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Schaftoside

Schaftoside is a flavonoid found in a variety of Chinese herbal medicines, such as Eleusine indica. Schaftoside inhibits the expression of TLR4 and Myd88. Schaftoside also decreases Drp1 expression and phosphorylation, and reduces mitochondrial fission[1].

  • CAS Number: 51938-32-0
  • MF: C26H28O14
  • MW: 564.49
  • Catalog: Dynamin
  • Density: 1.8±0.1 g/cm3
  • Boiling Point: 1028.2±65.0 °C at 760 mmHg
  • Melting Point: 228ºC
  • Flash Point: 342.7±27.8 °C

ODN 24888

ODN 24888 is an guanine-modified inhibitory oligonucleotides (INH-ODN), shows potent inhibition on TLR7/TLR9-mediated signaling. ODN 24888 impairs IFN-α level and NF-κB activation, inhibits IL-6 release. ODN 24888 involves in immune and inflammatory responses, can be used as a vaccine adjuvant[1][2].

  • CAS Number: 1964506-30-6
  • MF:
  • MW:
  • Catalog: Toll-like Receptor (TLR)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Tilsotolimod sodium

Tilsotolimod (sodium) is a synthetic Toll-like receptor 9 (TLR9) agonist that has demonstrated antitumor activity in preclinical models.

  • CAS Number: 2089768-67-0
  • MF: C223H262N74Na22O115P22S22
  • MW: 7711.51
  • Catalog: Toll-like Receptor (TLR)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Desethyl Chloroquine

Desethyl chloroquine is a major desethyl metabolite of Chloroquine. Chloroquine diphosphate is an inhibitor of autophagy and toll-like receptors (TLRs). Desethyl chloroquine possesses antiplasmodic activity[1][2].

  • CAS Number: 1476-52-4
  • MF: C16H22ClN3
  • MW: 291.81900
  • Catalog: Autophagy
  • Density: 1.138g/cm3
  • Boiling Point: 451.7ºC at 760mmHg
  • Melting Point: 94-97?C
  • Flash Point: 227ºC

LHC-165

LHC-165 is a TLR7 agonist. Has potential to treat solid tumors[1][2].

  • CAS Number: 1258595-14-0
  • MF: C29H32F2N3O7P
  • MW: 603.55
  • Catalog: Toll-like Receptor (TLR)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Neoseptin 3

Neoseptin 3 is a Toll-like receptor 4/myeloid differentiation factor 2 (mTLR4/MD-2) agonist with an EC50 of 18.5 μM.

  • CAS Number: 1622863-21-1
  • MF: C29H34N2O4
  • MW: 474.59
  • Catalog: Toll-like Receptor (TLR)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A