KEGG   PATHWAY: hsa04662
hsa04662                    Pathway                                
B cell receptor signaling pathway - Homo sapiens (human)
B cells are an important component of adaptive immunity. They produce and secrete millions of different antibody molecules, each of which recognizes a different (foreign) antigen. The B cell receptor (BCR) is an integral membrane protein complex that is composed of two immunoglobulin (Ig) heavy chains, two Ig light chains and two heterodimers of Ig-alpha and Ig-beta. After BCR ligation by antigen, three main protein tyrosine kinases (PTKs) -the SRC-family kinase LYN, SYK and the TEC-family kinase BTK- are activated. Phosphatidylinositol 3-kinase (PI3K) and phospholipase C-gamma 2 (PLC-gamma 2) are important downstream effectors of BCR signalling. This signalling ultimately results in the expression of immediate early genes that further activate the expression of other genes involved in B cell proliferation, differentiation and Ig production as well as other processes.
Organismal Systems; Immune system
Pathway map
hsa04662  B cell receptor signaling pathway

N00487  BCR-PLCG-Calcineurin signaling pathway
N01695  BCR-BCAP/CD19-PI3K signaling pathway
D03066  Bectumomab (USAN/INN)
D04036  Epratuzumab (USAN/INN)
D06348  Yttrium Y 90 epratuzumab (USAN)
D06349  Yttrium Y 90 epratuzumab tetraxetan (USAN)
D08933  Inotuzumab ozogamicin (USAN/INN)
D09325  Blinatumomab (USAN/INN)
D09347  Fostamatinib (USAN)
D09348  Fostamatinib disodium (USAN)
D09932  Moxetumomab pasudotox (USAN/INN)
D10223  Ibrutinib (JAN/USAN)
D10560  Idelalisib (JAN/USAN/INN)
D10730  Spebrutinib (USAN/INN)
D10731  Spebrutinib besylate (USAN)
D10761  Polatuzumab vedotin (USAN)
D10893  Acalabrutinib (JAN/USAN/INN)
D11070  Tirabrutinib hydrochloride (JAN/USAN)
D11144  Axicabtagene ciloleucel (USAN)
D11231  Denintuzumab (USAN/INN)
D11232  Denintuzumab mafodotin (USAN/INN)
D11322  Umbralisib (USAN/INN)
D11323  Umbralisib tosylate (USAN)
D11339  Valziflocept (USAN)
D11372  Duvortuxizumab (USAN)
D11386  Tisagenlecleucel-T (USAN)
D11422  Zanubrutinib (JAN/USAN/INN)
D11428  Vecabrutinib (USAN/INN)
D11437  Parsaclisib (USAN/INN)
D11457  Fenebrutinib (USAN/INN)
D11478  Branebrutinib (USAN)
D11496  Obexelimab (USAN/INN)
D11502  Vecabrutinib succinate (USAN)
D11506  Parsaclisib hydrochloride (JAN/USAN)
D11601  Tafasitamab (USAN/INN)
D11720  Acalabrutinib maleate (USAN)
D11757  Inebilizumab (USAN/INN)
D11778  Daxdilimab (USAN)
D11789  Mivavotinib (USAN/INN)
D11790  Mivavotinib citrate (USAN)
D11873  Rilzabrutinib (JAN/USAN/INN)
D11880  Brexucabtagene autoleucel (USAN)
D11942  Inavolisib (USAN/INN)
D11990  Lisocabtagene maraleucel (USAN/INN)
D12050  Pirtobrutinib (JAN/USAN)
D12052  Luxeptinib (USAN)
D12158  Elsubrutinib (USAN/INN)
D12160  Orelabrutinib (USAN/INN)
D12213  Tolebrutinib (JAN/USAN/INN)
D12285  Remibrutinib (JAN/USAN/INN)
D12383  Edralbrutinib (USAN/INN)
D12467  Evobrutinib (USAN/INN)
D12489  Atuzabrutinib (USAN/INN)
D12504  Nemtabrutinib (USAN/INN)
D12594  Tirabrutinib (USAN/INN)
D12704  Acalabrutinib maleate hydrate (JAN)
D12775  Polzastobart (USAN/INN)
Other DBs
GO: 0050853
Homo sapiens (human) [GN:hsa]
102723407  IGH; immunoglobulin heavy variable 4-38-2-like [KO:K06856]
973  CD79A; CD79a molecule [KO:K06506]
974  CD79B; CD79b molecule [KO:K06507]
4067  LYN; LYN proto-oncogene, Src family tyrosine kinase [KO:K05854] [EC:]
6850  SYK; spleen associated tyrosine kinase [KO:K05855] [EC:]
695  BTK; Bruton tyrosine kinase [KO:K07370] [EC:]
27071  DAPP1; dual adaptor of phosphotyrosine and 3-phosphoinositides 1 [KO:K12229]
29760  BLNK; B cell linker [KO:K07371]
10451  VAV3; vav guanine nucleotide exchange factor 3 [KO:K05730]
7409  VAV1; vav guanine nucleotide exchange factor 1 [KO:K05730]
7410  VAV2; vav guanine nucleotide exchange factor 2 [KO:K05730]
5879  RAC1; Rac family small GTPase 1 [KO:K04392]
5880  RAC2; Rac family small GTPase 2 [KO:K07860]
5881  RAC3; Rac family small GTPase 3 [KO:K07861]
55024  BANK1; B cell scaffold protein with ankyrin repeats 1 [KO:K26239]
640  BLK; BLK proto-oncogene, Src family tyrosine kinase [KO:K08890] [EC:]
5336  PLCG2; phospholipase C gamma 2 [KO:K05859] [EC:]
5530  PPP3CA; protein phosphatase 3 catalytic subunit alpha [KO:K04348] [EC:]
5532  PPP3CB; protein phosphatase 3 catalytic subunit beta [KO:K04348] [EC:]
5533  PPP3CC; protein phosphatase 3 catalytic subunit gamma [KO:K04348] [EC:]
5534  PPP3R1; protein phosphatase 3 regulatory subunit B, alpha [KO:K06268]
5535  PPP3R2; protein phosphatase 3 regulatory subunit B, beta [KO:K06268]
4772  NFATC1; nuclear factor of activated T cells 1 [KO:K04446]
4773  NFATC2; nuclear factor of activated T cells 2 [KO:K17332]
4775  NFATC3; nuclear factor of activated T cells 3 [KO:K17333]
2885  GRB2; growth factor receptor bound protein 2 [KO:K04364]
6654  SOS1; SOS Ras/Rac guanine nucleotide exchange factor 1 [KO:K03099]
6655  SOS2; SOS Ras/Rho guanine nucleotide exchange factor 2 [KO:K03099]
25780  RASGRP3; RAS guanyl releasing protein 3 [KO:K12362]
3265  HRAS; HRas proto-oncogene, GTPase [KO:K02833]
3845  KRAS; KRAS proto-oncogene, GTPase [KO:K07827]
4893  NRAS; NRAS proto-oncogene, GTPase [KO:K07828]
5894  RAF1; Raf-1 proto-oncogene, serine/threonine kinase [KO:K04366] [EC:]
5604  MAP2K1; mitogen-activated protein kinase kinase 1 [KO:K04368] [EC:]
5605  MAP2K2; mitogen-activated protein kinase kinase 2 [KO:K04369] [EC:]
5594  MAPK1; mitogen-activated protein kinase 1 [KO:K04371] [EC:]
5595  MAPK3; mitogen-activated protein kinase 3 [KO:K04371] [EC:]
2353  FOS; Fos proto-oncogene, AP-1 transcription factor subunit [KO:K04379]
3725  JUN; Jun proto-oncogene, AP-1 transcription factor subunit [KO:K04448]
5579  PRKCB; protein kinase C beta [KO:K19662] [EC:]
84433  CARD11; caspase recruitment domain family member 11 [KO:K07367]
8915  BCL10; BCL10 immune signaling adaptor [KO:K07368]
10892  MALT1; MALT1 paracaspase [KO:K07369] [EC:3.4.22.-]
1147  CHUK; component of inhibitor of nuclear factor kappa B kinase complex [KO:K04467] [EC:]
3551  IKBKB; inhibitor of nuclear factor kappa B kinase subunit beta [KO:K07209] [EC:]
8517  IKBKG; inhibitor of nuclear factor kappa B kinase regulatory subunit gamma [KO:K07210]
4790  NFKB1; nuclear factor kappa B subunit 1 [KO:K02580]
5970  RELA; RELA proto-oncogene, NF-kB subunit [KO:K04735]
4792  NFKBIA; NFKB inhibitor alpha [KO:K04734]
4793  NFKBIB; NFKB inhibitor beta [KO:K02581]
4794  NFKBIE; NFKB inhibitor epsilon [KO:K05872]
8519  IFITM1; interferon induced transmembrane protein 1 [KO:K19831]
975  CD81; CD81 molecule [KO:K06508]
930  CD19; CD19 molecule [KO:K06465]
1380  CR2; complement C3d receptor 2 [KO:K04012]
5295  PIK3R1; phosphoinositide-3-kinase regulatory subunit 1 [KO:K02649]
5296  PIK3R2; phosphoinositide-3-kinase regulatory subunit 2 [KO:K02649]
8503  PIK3R3; phosphoinositide-3-kinase regulatory subunit 3 [KO:K02649]
5290  PIK3CA; phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha [KO:K00922] [EC:]
5293  PIK3CD; phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit delta [KO:K00922] [EC:]
5291  PIK3CB; phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit beta [KO:K00922] [EC:]
207  AKT1; AKT serine/threonine kinase 1 [KO:K04456] [EC:]
208  AKT2; AKT serine/threonine kinase 2 [KO:K04456] [EC:]
10000  AKT3; AKT serine/threonine kinase 3 [KO:K04456] [EC:]
2932  GSK3B; glycogen synthase kinase 3 beta [KO:K03083] [EC:]
2213  FCGR2B; Fc gamma receptor IIb [KO:K12560]
3635  INPP5D; inositol polyphosphate-5-phosphatase D [KO:K03084] [EC:]
3636  INPPL1; inositol polyphosphate phosphatase like 1 [KO:K15909] [EC:]
10288  LILRB2; leukocyte immunoglobulin like receptor B2 [KO:K06512]
10859  LILRB1; leukocyte immunoglobulin like receptor B1 [KO:K06512]
10990  LILRB5; leukocyte immunoglobulin like receptor B5 [KO:K06512]
11006  LILRB4; leukocyte immunoglobulin like receptor B4 [KO:K06512]
11024  LILRA1; leukocyte immunoglobulin like receptor A1 [KO:K06512]
11025  LILRB3; leukocyte immunoglobulin like receptor B3 [KO:K06512]
11026  LILRA3; leukocyte immunoglobulin like receptor A3 [KO:K06512]
11027  LILRA2; leukocyte immunoglobulin like receptor A2 [KO:K06512]
23547  LILRA4; leukocyte immunoglobulin like receptor A4 [KO:K06512]
79168  LILRA6; leukocyte immunoglobulin like receptor A6 [KO:K06512]
353514  LILRA5; leukocyte immunoglobulin like receptor A5 [KO:K06512]
102725035  leukocyte immunoglobulin-like receptor subfamily B member 3 [KO:K06512]
933  CD22; CD22 molecule [KO:K06467]
971  CD72; CD72 molecule [KO:K06504]
5777  PTPN6; protein tyrosine phosphatase non-receptor type 6 [KO:K05697] [EC:]
118788  PIK3AP1; phosphoinositide-3-kinase adaptor protein 1 [KO:K12230]
C00076  Calcium cation
C00165  Diacylglycerol
C01245  D-myo-Inositol 1,4,5-trisphosphate
C05981  Phosphatidylinositol-3,4,5-trisphosphate
Niiro H, Clark EA.
Regulation of B-cell fate by antigen-receptor signals.
Nat Rev Immunol 2:945-56 (2002)
Kurosaki T.
Genetic analysis of B cell antigen receptor signaling.
Annu Rev Immunol 17:555-92 (1999)
Nitschke L.
The role of CD22 and other inhibitory co-receptors in B-cell activation.
Curr Opin Immunol 17:290-7 (2005)
Morgan BP, Marchbank KJ, Longhi MP, Harris CL, Gallimore AM.
Complement: central to innate immunity and bridging to adaptive responses.
Immunol Lett 97:171-9 (2005)
Kurosaki T.
Regulation of B-cell signal transduction by adaptor proteins.
Nat Rev Immunol 2:354-63 (2002)
Nitschke L, Tsubata T.
Molecular interactions regulate BCR signal inhibition by CD22 and CD72.
Trends Immunol 25:543-50 (2004)
Jumaa H, Hendriks RW, Reth M.
B cell signaling and tumorigenesis.
Annu Rev Immunol 23:415-45 (2005)
Rickert RC.
Regulation of B lymphocyte activation by complement C3 and the B cell coreceptor complex.
Curr Opin Immunol 17:237-43 (2005)
Zouali M, Sarmay G
B lymphocyte signaling pathways in systemic autoimmunity: implications for pathogenesis and treatment.
Arthritis Rheum 50:2730-41 (2004)
Chiles TC.
Regulation and function of cyclin D2 in B lymphocyte subsets.
J Immunol 173:2901-7 (2004)
Allam A, Marshall AJ
Role of the adaptor proteins Bam32, TAPP1 and TAPP2 in lymphocyte activation.
Immunol Lett 97:7-17 (2005)
Gold MR
To make antibodies or not: signaling by the B-cell antigen receptor.
Trends Pharmacol Sci 23:316-24 (2002)
Fu C, Turck CW, Kurosaki T, Chan AC
BLNK: a central linker protein in B cell activation.
Immunity 9:93-103 (1998)
Okada T, Maeda A, Iwamatsu A, Gotoh K, Kurosaki T
BCAP: the tyrosine kinase substrate that connects B cell receptor to phosphoinositide 3-kinase activation.
Immunity 13:817-27 (2000)
Shinohara H, Maeda S, Watarai H, Kurosaki T
IkappaB kinase beta-induced phosphorylation of CARMA1 contributes to CARMA1 Bcl10 MALT1 complex formation in B cells.
J Exp Med 204:3285-93 (2007)
hsa04010  MAPK signaling pathway
hsa04020  Calcium signaling pathway
hsa04064  NF-kappa B signaling pathway
hsa04120  Ubiquitin mediated proteolysis
hsa04151  PI3K-Akt signaling pathway
hsa04610  Complement and coagulation cascades
hsa04810  Regulation of actin cytoskeleton
KO pathway

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