2. Signaling Pathways
  3. Protein Tyrosine Kinase/RTK
  4. Btk

Btk

Bruton tyrosine kinase

Btk

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Bruton tyrosine kinase (Btk) is a member of the Tec family kinases with a well-characterized role in B-cell antigen receptor (BCR)-signaling and B-cell activation.

Btk plays a crucial role in B cell development and activation through the BCR signaling pathway and represents a new target for diseases characterized by inappropriate B cell activity. Btk is a kinase expressed exclusively in B cells and myeloid cells and has a well characterized, vital role in B cells highlighted by the human primary immune deficiency disease, X-linked agammaglobulinemia (XLA), which results from mutation in the Btk gene. Btk plays an essential role in the BCR signaling pathway. Antigen binding to the BCR results in B cell receptor oligomerization, Syk and Lyn kinase activation, followed by Btk kinase activation. Once activated, Btk forms a signaling complex with proteins such as BLNK, Lyn, and Syk and phosphorylates phospholipase C (PLC)γ2. This leads to downstream release of intracellular Ca2+ stores and propagation of the BCR signaling pathway through extracellular signal-regulated kinase and NF-κB signaling, ultimately resulting in transcriptional changes to foster B cell survival, proliferation, and/or differentiation.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-162407
    I-As-1
    		Inhibitor
    I-As-1 is a potent inhibitor of Bruton’s tyrosine kinase (BTK), with the IC50 of 2.35 nM. I-As-1 shows antiproliferative activities among Ramos cells and OCI-LY10 cells with IC50s of 0.52 μM and 0.11 μM, respectively.
    I-As-1
  • HY-162257
    BTK-IN-34
    		Inhibitor
    BTK-IN-34 (compound 9h) is a selective BTK inhibitor. BTK-IN-34 shows antiproliferative activity in RAMOS cells through selective inhibition of pBTK (Tyr223) without affecting Lyn and Syk, upstream proteins in the BCR signaling pathway.
    BTK-IN-34
  • HY-160167
    Birelentinib
    		Inhibitor
    Birelentinib (DZD8586) is an orally effective, selective, non-covalent inhibitor targeting LYN tyrosine kinase and BTK tyrosine kinase, capable of penetrating the blood-brain barrier. Birelentinib exhibits concentration-dependent antiproliferative effects in RI-1 cells and diffuse large B-cell lymphoma (DLBCL) cell lines carrying BTK resistance mutations (such as C481X, V416L, etc.). Birelentinib blocks both BTK-dependent and independent signaling of the B-cell receptor (BCR), thereby inhibiting tumor cell proliferation and inducing cell death. Birelentinib can be used in research to overcome resistance to existing covalent and non-covalent BTK inhibitors in B-cell non-Hodgkin lymphoma (B-NHL).
    Birelentinib
  • HY-151920
    BTK-IN-17
    		Inhibitor
    BTK-IN-17 (compound 36R) is a selective and orally activeBTK inhibitor with an IC50 value of 13.7 nM. BTK-IN-17 decreases the expression of p-BTKY223 and p-PLCγ2Y1217. BTK-IN-17 shows anti-inflammatory effects.
    BTK-IN-17
  • HY-144283
    BLK-IN-1
    		Inhibitor
    BLK-IN-1 (compound 1) is a selective and covalent inhibitor of B-Lymphoid tyrosine kinase (BLK) and BTK, with IC50s of 18.8 nM and 20.5 nM, respectively. BLK-IN-1 can be used for the research of cancer.
    BLK-IN-1
  • HY-142621
    BCPyr
    		Inhibitor
    BCPyr is a PROTAC-class BTK degrader (DC50 = 800 nM). BCPyr consists of a PROTAC target protein ligand (red part) BTK ligand 11 (HY-168314), an E3 ubiquitin ligase ligand (blue part) E3 ligase Ligand 20 (HY-135997), and a PROTAC linker (black part) (5-(Bromomethyl)pyrazin-2-yl)methanol (HY-168315). E3 ubiquitin ligase+linker can form E3 Ligase Ligand-linker Conjugate 146 (HY-168316).
    BCPyr
  • HY-181546
    Ibt-DOX
    		Inhibitor
    Ibt-DOX is a BTK inhibitor with an IC50 of 2.89 nM. Ibt-DOX is also a targeted covalent activated chemotherapeutic agent composed of the targeting ligand Ibrutinib (HY-10997), Doxorubicin (DOX) (HY-15142A), α-MAA (HY-W017180), and a linker (HY-Y0892). Ibt-DOX specifically binds to BTK and releases DOX, synergistically achieving BTK inhibition and chemotherapeutic killing, significantly enhancing toxicity against B-cell lymphoma cells and greatly reducing the toxic side effects of DOX on BTK-negative cells. Ibt-DOX can be used in lymphoma-related research.
    Ibt-DOX
  • HY-181547
    HBC-12551
    		Inhibitor
    HBC-12551 is an orally active BTK inhibitor (IC50 in HEK293 cells: 1.31 nM for BTK; 2.18 nM for BTKC481S). HBC-12551 has antitumor activity against diffuse large B-cell lymphoma.
    HBC-12551
  • HY-147580
    BTK-IN-10
    		Inhibitor
    BTK-IN-10 is a potent BTK inhibitor with IC50s of <5 nM for wild-type BTK or mutated BTK (C481S), respectively (WO2022012509A1; example 111).
    BTK-IN-10
  • HY-143717
    JAK3/BTK-IN-2
    		Inhibitor
    JAK3/BTK-IN-2 is a potent inhibitor of JAK3/BTK. BTK and JAK3 are two important targets for autoimmune diseases. Simultaneous inhibition of the BTK/JAK3 signalling pathway exhibits synergistic effects. JAK3/BTK-IN-2 has the potential for the research of JAK3 kinase and/or BTK-related diseases (extracted from patent WO2021147952A1, compound 004)
    JAK3/BTK-IN-2
  • HY-124153
    GNE-431
    		Inhibitor
    GNE-431 is a potent, selective and noncovalent “pan-BTK” inhibitor against C481R, T474I and T474Ms mutants. GNE-431 shows potency against wild-type BTK (IC50= 3.2 nM) and potency against C481S mutant (IC50= 2.5 nM). GNE-431 is proming for rasearch of haematological disorders and autoimmune diseases.
    GNE-431
  • HY-148584
    BTK-IN-21
    		Inhibitor
    BTK-IN-21 (Compound 12) is a BTK inhibitor with an IC50 of 33 nM. BTK-IN-21 can be used for research in cancer and autoimmunity therapies.
    BTK-IN-21
  • HY-183103
    PDD-87
    		Inhibitor
    PDD-87 is an orally active, blood-brain barrier permeable kinase inhibitor, with IC50 values ranging from 0.07 nM to 0.72 nM against ABL, SRC family, BTK kinases and their key mutants. PDD-87 induces antiproliferative effects in leukemia and lymphoma cells, and inhibits tumor growth in mouse xenograft models. PDD-87 can be used for the research of leukemia and lymphoma.
    PDD-87
  • HY-173143
    BTK-IN-42
    		Inhibitor
    BTK-IN-42 (Compound 11a) is a Btk inhibitor. BTK-IN-42 can effectively inhibit the growth and migration of tumor cells TMD8, with IC50 values of 2.61 and 5.34 μM for TMD8 and T9 cells respectively. It shows promise for research in the field of anti-cancer.
    BTK-IN-42
  • HY-139881
    BTK inhibitor 19
    		Inhibitor
    BTK inhibitor 19 is a highly selective, covalent BTK inhibitor (IC50 = 2.7 nM).
    BTK inhibitor 19
  • HY-157159
    BTK-IN-28
    		Inhibitor
    BTK-IN-28 (compound PID-4) is a potent BTK inhibitor with anticancer activity. BTK-IN-28 has inhibitory effects on BTK and downstream signaling cascades and selectively inhibits Burkitt lymphoma RAMOS proliferation. BTK-IN-28 has no significant cytotoxicity towards non-tumor cells.
    BTK-IN-28
  • HY-117499
    RN941
    		Inhibitor
    RN941 is a BTK inhibitor. RN941 is applicable to research related to rheumatoid arthritis and B-cell malignancies.
    RN941
  • HY-176131
    AMX5160
    		Inhibitor
    AMX5160 (36) is an orally active BTK inhibitor, with an IC50 of 0.98 nM against mutant BTKC481S. AMX5160 (36) can be used in the research for leukemia, lymphoma, multiple sclerosis, and other autoimmune diseases.
    AMX5160
  • HY-143900
    BTK-IN-7
    		Inhibitor
    BTK-IN-7 is a potent and selective inhibitor of BTK (IC50=4.0 nM). BTK-IN-7 has high selectivity in both enzymatic (ITK >250-fold, EGFR >2500-fold) and cellular levels (ITK >227-fold, EGFR 27-fold). BTK-IN-7 also has potent antitumor activity.
    BTK-IN-7
  • HY-147741
    DPPY
    		Inhibitor
    DPPY (compound 6) is a potent PTK inhibitor with IC50 values of <10, <10, <10 nM for EGFR, BTK, JAK3, respectively. DPPY shows anti-proliferative activity against B-cell lymphoma cells. DPPY has the potential for the research of idiopathic pulmonary fibrosis (IPF).
    DPPY
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