Details for: SERPINB9

Gene ID: 5272

Gene Type:  Protein-coding  - A gene that serves as a template for producing a messenger RNA (mRNA) molecule, which is then translated into a functional protein.

Symbol: SERPINB9

Ensembl ID: ENSG00000170542

Description: serpin family B member 9

Selected Context(s):  Overall

Cell Significance Landscape

Contexts:

Associated with

Significant Cells

Cell Significance Index (CSI) scores for the chosen context(s)

  • myeloid dendritic cell CL0000782
    CSI 27.08
    rCSI 39.23%
    PRS 56.4
  • Langerhans cell CL0000453
    CSI 26.26
    rCSI 40.11%
    PRS 57.96
  • intermediate monocyte CL0002393
    CSI 18.86
    rCSI 28.46%
    PRS 42.39
  • melanocyte of skin CL1000458
    CSI 15.6
    rCSI 21.27%
    PRS 21.39
  • dendritic cell CL0000451
    CSI 14.89
    rCSI 18.35%
    PRS 65.95
  • plasmacytoid dendritic cell, human CL0001058
    CSI 14.88
    rCSI 10.39%
    PRS 42.36
  • placental villous trophoblast CL2000060
    CSI 13.49
    rCSI 20.84%
    PRS 38.79
  • extravillous trophoblast CL0008036
    CSI 13.42
    rCSI 16.61%
    PRS 36.86
  • CD1c-positive myeloid dendritic cell CL0002399
    CSI 12.56
    rCSI 15.17%
    PRS 47.84
  • vascular associated smooth muscle cell CL0000359
    CSI 11.79
    rCSI 38.24%
    PRS 44.12
  • lung interstitial macrophage CL4033043
    CSI 10.35
    rCSI 23.24%
    PRS 61.22
  • colon macrophage CL0009038
    CSI 10.3
    rCSI 47.6%
    PRS 63.5
  • pulmonary artery endothelial cell CL1001568
    CSI 8.79
    rCSI 11.96%
    PRS 53.26
  • activated CD8-positive, alpha-beta T cell, human CL0001049
    CSI 8.39
    rCSI 14.35%
    PRS 61.39
  • innate lymphoid cell CL0001065
    CSI 7.98
    rCSI 16.47%
    PRS 47.8
  • Mueller cell CL0000636
    CSI 7.79
    rCSI 17.79%
    PRS 34.91
  • elicited macrophage CL0000861
    CSI 7.19
    rCSI 6.6%
    PRS 47.65
  • alternatively activated macrophage CL0000890
    CSI 6.85
    rCSI 8.61%
    PRS 53.88
  • monocyte CL0000576
    CSI 6.72
    rCSI 12.14%
    PRS 63.81
  • myeloid leukocyte CL0000766
    CSI 6.46
    rCSI 5.96%
    PRS 41.76
  • CD14-positive, CD16-positive monocyte CL0002397
    CSI 6.03
    rCSI 7.89%
    PRS 53.55
  • pvalb GABAergic cortical interneuron CL4023018
    CSI 5.91
    rCSI 7.36%
    PRS 25.14
  • memory T cell CL0000813
    CSI 5.64
    rCSI 10.87%
    PRS 70.3
  • unswitched memory B cell CL0000970
    CSI 5.6
    rCSI 4.71%
    PRS 57.58
  • central memory CD8-positive, alpha-beta T cell CL0000907
    CSI 5.43
    rCSI 3.66%
    PRS 50.18
  • mononuclear phagocyte CL0000113
    CSI 5.2
    rCSI 11.44%
    PRS 44.51
  • natural T-regulatory cell CL0000903
    CSI 5.08
    rCSI 9.63%
    PRS 74.83
  • BEST4+ enteroycte CL4030026
    CSI 4.87
    rCSI 6.05%
    PRS 43.32
  • CD4-positive, alpha-beta thymocyte CL0000810
    CSI 4.63
    rCSI 3.71%
    PRS 61.85
  • tissue-resident macrophage CL0000864
    CSI 4.52
    rCSI 21.16%
    PRS 60.61
  • pulmonary capillary endothelial cell CL4028001
    CSI 4.36
    rCSI 8.31%
    PRS 57.24
  • cerebral cortex endothelial cell CL1001602
    CSI 4.34
    rCSI 7.51%
    PRS 32.26
  • late pro-B cell CL0002048
    CSI 4.16
    rCSI 10.41%
    PRS 71.57
  • naive T cell CL0000898
    CSI 4.1
    rCSI 2.85%
    PRS 53
  • dendritic cell, human CL0001056
    CSI 3.77
    rCSI 5.79%
    PRS 47.24
  • GABAergic neuron CL0000617
    CSI 3.73
    rCSI 12.5%
    PRS 30.38
  • group 3 innate lymphoid cell CL0001071
    CSI 3.44
    rCSI 2.59%
    PRS 43.67
  • CD4-positive, alpha-beta memory T cell CL0000897
    CSI 3.4
    rCSI 2.44%
    PRS 52.8
  • alpha-beta T cell CL0000789
    CSI 3.36
    rCSI 3.93%
    PRS 55.43
  • M cell of gut CL0000682
    CSI 3.28
    rCSI 3.48%
    PRS 56.03
  • platelet CL0000233
    CSI 3.18
    rCSI 13.19%
    PRS 50.94
  • fibroblast of lung CL0002553
    CSI 3.18
    rCSI 2.96%
    PRS 40.61
  • CD8-positive, alpha-beta memory T cell CL0000909
    CSI 3.14
    rCSI 3.28%
    PRS 71.38
  • CD8-positive, alpha-beta cytotoxic T cell CL0000794
    CSI 3.08
    rCSI 3.67%
    PRS 60.57
  • astrocyte of the cerebral cortex CL0002605
    CSI 3.07
    rCSI 6.89%
    PRS 27.15
  • central nervous system macrophage CL0000878
    CSI 3.04
    rCSI 10.07%
    PRS 42.13
  • IgA plasma cell CL0000987
    CSI 3.04
    rCSI 3.11%
    PRS 59.31
  • bronchus fibroblast of lung CL2000093
    CSI 2.94
    rCSI 2.39%
    PRS 41.71
  • class switched memory B cell CL0000972
    CSI 2.94
    rCSI 2.19%
    PRS 58.78
  • activated CD4-positive, alpha-beta T cell CL0000896
    CSI 2.89
    rCSI 2.68%
    PRS 60.91
  • effector CD8-positive, alpha-beta T cell CL0001050
    CSI 2.87
    rCSI 2.18%
    PRS 51.36
  • alveolar macrophage CL0000583
    CSI 2.86
    rCSI 4.7%
    PRS 45.97
  • mature T cell CL0002419
    CSI 2.84
    rCSI 2.21%
    PRS 56.8
  • Kupffer cell CL0000091
    CSI 2.78
    rCSI 6.35%
    PRS 40.17
  • CD4-positive helper T cell CL0000492
    CSI 2.74
    rCSI 2.07%
    PRS 52.37
  • effector memory CD8-positive, alpha-beta T cell CL0000913
    CSI 2.73
    rCSI 2.49%
    PRS 55.22
  • cardiac neuron CL0010022
    CSI 2.67
    rCSI 8.55%
    PRS 37.91
  • alveolar adventitial fibroblast CL4028006
    CSI 2.64
    rCSI 4.17%
    PRS 41.71
  • inflammatory macrophage CL0000863
    CSI 2.61
    rCSI 4.46%
    PRS 66.63
  • endothelial cell of periportal hepatic sinusoid CL0019021
    CSI 2.59
    rCSI 11.9%
    PRS 61.08
  • mature microglial cell CL0002629
    CSI 2.56
    rCSI 10.65%
    PRS 42.24
  • glial cell CL0000125
    CSI 2.52
    rCSI 9.59%
    PRS 35.22
  • pro-B cell CL0000826
    CSI 2.5
    rCSI 2.07%
    PRS 41.53
  • myeloid dendritic cell, human CL0001057
    CSI 2.49
    rCSI 14.01%
    PRS 73.41
  • retinal ganglion cell CL0000740
    CSI 2.48
    rCSI 5.47%
    PRS 30.23
  • activated CD8-positive, alpha-beta T cell CL0000906
    CSI 2.42
    rCSI 2.38%
    PRS 68.83
  • L5 extratelencephalic projecting glutamatergic cortical neuron CL4023041
    CSI 2.39
    rCSI 8.61%
    PRS 25.48
  • hepatic stellate cell CL0000632
    CSI 2.38
    rCSI 8.93%
    PRS 34.7
  • L2/3-6 intratelencephalic projecting glutamatergic neuron CL4023040
    CSI 2.38
    rCSI 5.78%
    PRS 25.76
  • neural crest cell CL0011012
    CSI 2.32
    rCSI 1.83%
    PRS 29.55
  • CD14-low, CD16-positive monocyte CL0002396
    CSI 2.31
    rCSI 1.78%
    PRS 39.26
  • alveolar type 1 fibroblast cell CL4028004
    CSI 2.26
    rCSI 2.48%
    PRS 44.48
  • endothelial cell of placenta CL0009092
    CSI 2.25
    rCSI 11.07%
    PRS 51.91
  • mature B cell CL0000785
    CSI 2.24
    rCSI 1.95%
    PRS 49.25
  • microglial cell CL0000129
    CSI 2.24
    rCSI 9.02%
    PRS 52.21
  • central memory CD4-positive, alpha-beta T cell CL0000904
    CSI 2.21
    rCSI 1.31%
    PRS 54.59
  • IgG plasma cell CL0000985
    CSI 2.18
    rCSI 2.61%
    PRS 59.57
  • CD4-positive, CD25-positive, alpha-beta regulatory T cell CL0000792
    CSI 2.16
    rCSI 2.12%
    PRS 55.56
  • retinal blood vessel endothelial cell CL0002585
    CSI 2.15
    rCSI 3.43%
    PRS 44.08
  • effector CD4-positive, alpha-beta T cell CL0001044
    CSI 2.12
    rCSI 6.09%
    PRS 57.46
  • blood vessel endothelial cell CL0000071
    CSI 2.12
    rCSI 4.39%
    PRS 38.99
  • melanocyte CL0000148
    CSI 2.09
    rCSI 1.54%
    PRS 35.06
  • myofibroblast cell CL0000186
    CSI 2.07
    rCSI 2.87%
    PRS 46.29
  • early lymphoid progenitor CL0000936
    CSI 2.07
    rCSI 1.82%
    PRS 45.37
  • endothelial cell of pericentral hepatic sinusoid CL0019022
    CSI 2.06
    rCSI 6.33%
    PRS 52.91
  • activated type II NK T cell CL0000931
    CSI 2.04
    rCSI 2.3%
    PRS 56.43
  • lung macrophage CL1001603
    CSI 2.04
    rCSI 4.56%
    PRS 46.74
  • VIP GABAergic cortical interneuron CL4023016
    CSI 2.02
    rCSI 2.41%
    PRS 26.46
  • double-positive, alpha-beta thymocyte CL0000809
    CSI 1.99
    rCSI 2.03%
    PRS 53.02
  • hepatocyte CL0000182
    CSI 1.98
    rCSI 3.54%
    PRS 39.28
  • chandelier pvalb GABAergic cortical interneuron CL4023036
    CSI 1.97
    rCSI 6.15%
    PRS 29.68
  • granulocyte CL0000094
    CSI 1.92
    rCSI 2.94%
    PRS 49.42
  • stem cell CL0000034
    CSI 1.92
    rCSI 1.85%
    PRS 32.09
  • plasmablast CL0000980
    CSI 1.91
    rCSI 1.5%
    PRS 46.8
  • lymphoid lineage restricted progenitor cell CL0000838
    CSI 1.87
    rCSI 7.26%
    PRS 60.55
  • fallopian tube secretory epithelial cell CL4030006
    CSI 1.7
    rCSI 1.63%
    PRS 41.29
  • L6b glutamatergic cortical neuron CL4023038
    CSI 1.69
    rCSI 5.29%
    PRS 27.63
  • enterocyte CL0000584
    CSI 1.67
    rCSI 2.7%
    PRS 50.19
  • megakaryocyte CL0000556
    CSI 1.58
    rCSI 6.87%
    PRS 56.54
  • lung resident memory CD8-positive, alpha-beta T cell CL4033039
    CSI 1.45
    rCSI 3.74%
    PRS 71.85
  • cytotoxic T cell CL0000910
    CSI 0.3
    rCSI 1.4%
    PRS 52.8%
  • effector memory CD8-positive, alpha-beta T cell, terminally differentiated CL0001062
    CSI 0.3
    rCSI 1.4%
    PRS 51.1%
  • prostate gland microvascular endothelial cell CL2000059
    CSI 0.3
    rCSI 7.1%
    PRS 68.7%
  • CD14-positive, CD16-negative classical monocyte CL0002057
    CSI 0.3
    rCSI 1.8%
    PRS 65.8%
  • OFF midget ganglion cell CL4033047
    CSI 0.4
    rCSI 8.7%
    PRS 35.3%
  • follicular dendritic cell CL0000442
    CSI 0.5
    rCSI 7.3%
    PRS 78.6%
  • ON parasol ganglion cell CL4033052
    CSI 0.5
    rCSI 6.9%
    PRS 33.9%
  • helper T cell CL0000912
    CSI 0.5
    rCSI 0.7%
    PRS 49.8%
  • near-projecting glutamatergic cortical neuron CL4023012
    CSI 0.5
    rCSI 2.0%
    PRS 27.4%
  • megakaryocyte-erythroid progenitor cell CL0000050
    CSI 0.6
    rCSI 0.5%
    PRS 37.5%
  • podocyte CL0000653
    CSI 0.6
    rCSI 2.7%
    PRS 39.3%
  • enteroglial cell CL4040002
    CSI 0.6
    rCSI 3.4%
    PRS 50.4%
  • CD8-positive, alpha-beta memory T cell, CD45RO-positive CL0001203
    CSI 0.8
    rCSI 0.9%
    PRS 37.9%
  • mature alpha-beta T cell CL0000791
    CSI 0.8
    rCSI 2.8%
    PRS 59.5%
  • corticothalamic-projecting glutamatergic cortical neuron CL4023013
    CSI 0.9
    rCSI 5.2%
    PRS 27.8%
  • ON midget ganglion cell CL4033046
    CSI 0.9
    rCSI 18.3%
    PRS 34.1%
  • caudal ganglionic eminence derived cortical interneuron CL4023064
    CSI 0.9
    rCSI 1.7%
    PRS 25.6%
  • endocardial cell CL0002350
    CSI 1.0
    rCSI 4.9%
    PRS 42.7%
  • basophil CL0000767
    CSI 1.1
    rCSI 2.3%
    PRS 61.9%
  • T-helper 1 cell CL0000545
    CSI 1.2
    rCSI 2.1%
    PRS 67.7%
  • transitional stage B cell CL0000818
    CSI 1.2
    rCSI 4.0%
    PRS 73.1%
  • T-helper 17 cell CL0000899
    CSI 1.2
    rCSI 1.0%
    PRS 62.1%
  • CD8-positive, CD28-negative, alpha-beta regulatory T cell CL0000920
    CSI 1.3
    rCSI 2.5%
    PRS 58.4%
  • sncg GABAergic cortical interneuron CL4023015
    CSI 1.3
    rCSI 2.1%
    PRS 28.6%
  • Hofbauer cell CL3000001
    CSI 1.4
    rCSI 2.6%
    PRS 50.2%
  • syncytiotrophoblast cell CL0000525
    CSI 1.4
    rCSI 4.1%
    PRS 58.6%
  • lung resident memory CD8-positive, alpha-beta T cell CL4033039
    CSI 1.5
    rCSI 3.7%
    PRS 71.9%
  • megakaryocyte CL0000556
    CSI 1.6
    rCSI 6.9%
    PRS 56.5%
  • enterocyte CL0000584
    CSI 1.7
    rCSI 2.7%
    PRS 50.2%
  • L6b glutamatergic cortical neuron CL4023038
    CSI 1.7
    rCSI 5.3%
    PRS 27.6%
  • fallopian tube secretory epithelial cell CL4030006
    CSI 1.7
    rCSI 1.6%
    PRS 41.3%
  • lymphoid lineage restricted progenitor cell CL0000838
    CSI 1.9
    rCSI 7.3%
    PRS 60.6%
  • plasmablast CL0000980
    CSI 1.9
    rCSI 1.5%
    PRS 46.8%
  • stem cell CL0000034
    CSI 1.9
    rCSI 1.9%
    PRS 32.1%
  • granulocyte CL0000094
    CSI 1.9
    rCSI 2.9%
    PRS 49.4%
  • chandelier pvalb GABAergic cortical interneuron CL4023036
    CSI 2.0
    rCSI 6.2%
    PRS 29.7%
  • hepatocyte CL0000182
    CSI 2.0
    rCSI 3.5%
    PRS 39.3%
  • double-positive, alpha-beta thymocyte CL0000809
    CSI 2.0
    rCSI 2.0%
    PRS 53.0%
  • VIP GABAergic cortical interneuron CL4023016
    CSI 2.0
    rCSI 2.4%
    PRS 26.5%
  • lung macrophage CL1001603
    CSI 2.0
    rCSI 4.6%
    PRS 46.7%
  • activated type II NK T cell CL0000931
    CSI 2.0
    rCSI 2.3%
    PRS 56.4%
  • endothelial cell of pericentral hepatic sinusoid CL0019022
    CSI 2.1
    rCSI 6.3%
    PRS 52.9%
  • early lymphoid progenitor CL0000936
    CSI 2.1
    rCSI 1.8%
    PRS 45.4%
  • myofibroblast cell CL0000186
    CSI 2.1
    rCSI 2.9%
    PRS 46.3%
  • melanocyte CL0000148
    CSI 2.1
    rCSI 1.5%
    PRS 35.1%
  • blood vessel endothelial cell CL0000071
    CSI 2.1
    rCSI 4.4%
    PRS 39.0%
  • effector CD4-positive, alpha-beta T cell CL0001044
    CSI 2.1
    rCSI 6.1%
    PRS 57.5%
  • retinal blood vessel endothelial cell CL0002585
    CSI 2.2
    rCSI 3.4%
    PRS 44.1%
  • CD4-positive, CD25-positive, alpha-beta regulatory T cell CL0000792
    CSI 2.2
    rCSI 2.1%
    PRS 55.6%
  • IgG plasma cell CL0000985
    CSI 2.2
    rCSI 2.6%
    PRS 59.6%
  • central memory CD4-positive, alpha-beta T cell CL0000904
    CSI 2.2
    rCSI 1.3%
    PRS 54.6%
  • microglial cell CL0000129
    CSI 2.2
    rCSI 9.0%
    PRS 52.2%
  • mature B cell CL0000785
    CSI 2.2
    rCSI 2.0%
    PRS 49.3%
  • endothelial cell of placenta CL0009092
    CSI 2.3
    rCSI 11.1%
    PRS 51.9%
  • alveolar type 1 fibroblast cell CL4028004
    CSI 2.3
    rCSI 2.5%
    PRS 44.5%
  • CD14-low, CD16-positive monocyte CL0002396
    CSI 2.3
    rCSI 1.8%
    PRS 39.3%
  • neural crest cell CL0011012
    CSI 2.3
    rCSI 1.8%
    PRS 29.6%
  • L2/3-6 intratelencephalic projecting glutamatergic neuron CL4023040
    CSI 2.4
    rCSI 5.8%
    PRS 25.8%
  • hepatic stellate cell CL0000632
    CSI 2.4
    rCSI 8.9%
    PRS 34.7%
  • L5 extratelencephalic projecting glutamatergic cortical neuron CL4023041
    CSI 2.4
    rCSI 8.6%
    PRS 25.5%
  • activated CD8-positive, alpha-beta T cell CL0000906
    CSI 2.4
    rCSI 2.4%
    PRS 68.8%
  • retinal ganglion cell CL0000740
    CSI 2.5
    rCSI 5.5%
    PRS 30.2%
  • myeloid dendritic cell, human CL0001057
    CSI 2.5
    rCSI 14.0%
    PRS 73.4%
  • pro-B cell CL0000826
    CSI 2.5
    rCSI 2.1%
    PRS 41.5%
  • glial cell CL0000125
    CSI 2.5
    rCSI 9.6%
    PRS 35.2%
  • mature microglial cell CL0002629
    CSI 2.6
    rCSI 10.7%
    PRS 42.2%
  • endothelial cell of periportal hepatic sinusoid CL0019021
    CSI 2.6
    rCSI 11.9%
    PRS 61.1%
  • inflammatory macrophage CL0000863
    CSI 2.6
    rCSI 4.5%
    PRS 66.6%
  • alveolar adventitial fibroblast CL4028006
    CSI 2.6
    rCSI 4.2%
    PRS 41.7%
  • cardiac neuron CL0010022
    CSI 2.7
    rCSI 8.6%
    PRS 37.9%
  • effector memory CD8-positive, alpha-beta T cell CL0000913
    CSI 2.7
    rCSI 2.5%
    PRS 55.2%
  • CD4-positive helper T cell CL0000492
    CSI 2.7
    rCSI 2.1%
    PRS 52.4%
  • Kupffer cell CL0000091
    CSI 2.8
    rCSI 6.4%
    PRS 40.2%
  • mature T cell CL0002419
    CSI 2.8
    rCSI 2.2%
    PRS 56.8%
  • alveolar macrophage CL0000583
    CSI 2.9
    rCSI 4.7%
    PRS 46.0%
  • effector CD8-positive, alpha-beta T cell CL0001050
    CSI 2.9
    rCSI 2.2%
    PRS 51.4%
  • activated CD4-positive, alpha-beta T cell CL0000896
    CSI 2.9
    rCSI 2.7%
    PRS 60.9%
  • class switched memory B cell CL0000972
    CSI 2.9
    rCSI 2.2%
    PRS 58.8%
  • bronchus fibroblast of lung CL2000093
    CSI 2.9
    rCSI 2.4%
    PRS 41.7%
  • IgA plasma cell CL0000987
    CSI 3.0
    rCSI 3.1%
    PRS 59.3%
  • central nervous system macrophage CL0000878
    CSI 3.0
    rCSI 10.1%
    PRS 42.1%
  • astrocyte of the cerebral cortex CL0002605
    CSI 3.1
    rCSI 6.9%
    PRS 27.2%
  • CD8-positive, alpha-beta cytotoxic T cell CL0000794
    CSI 3.1
    rCSI 3.7%
    PRS 60.6%
  • CD8-positive, alpha-beta memory T cell CL0000909
    CSI 3.1
    rCSI 3.3%
    PRS 71.4%
  • fibroblast of lung CL0002553
    CSI 3.2
    rCSI 3.0%
    PRS 40.6%
  • platelet CL0000233
    CSI 3.2
    rCSI 13.2%
    PRS 50.9%
  • M cell of gut CL0000682
    CSI 3.3
    rCSI 3.5%
    PRS 56.0%
  • alpha-beta T cell CL0000789
    CSI 3.4
    rCSI 3.9%
    PRS 55.4%
  • CD4-positive, alpha-beta memory T cell CL0000897
    CSI 3.4
    rCSI 2.4%
    PRS 52.8%
  • group 3 innate lymphoid cell CL0001071
    CSI 3.4
    rCSI 2.6%
    PRS 43.7%
  • GABAergic neuron CL0000617
    CSI 3.7
    rCSI 12.5%
    PRS 30.4%
  • dendritic cell, human CL0001056
    CSI 3.8
    rCSI 5.8%
    PRS 47.2%
  • naive T cell CL0000898
    CSI 4.1
    rCSI 2.9%
    PRS 53.0%
  • late pro-B cell CL0002048
    CSI 4.2
    rCSI 10.4%
    PRS 71.6%
  • cerebral cortex endothelial cell CL1001602
    CSI 4.3
    rCSI 7.5%
    PRS 32.3%
  • pulmonary capillary endothelial cell CL4028001
    CSI 4.4
    rCSI 8.3%
    PRS 57.2%
  • tissue-resident macrophage CL0000864
    CSI 4.5
    rCSI 21.2%
    PRS 60.6%
  • CD4-positive, alpha-beta thymocyte CL0000810
    CSI 4.6
    rCSI 3.7%
    PRS 61.9%
  • BEST4+ enteroycte CL4030026
    CSI 4.9
    rCSI 6.1%
    PRS 43.3%
  • natural T-regulatory cell CL0000903
    CSI 5.1
    rCSI 9.6%
    PRS 74.8%

Cell ID: Standard Cell Ontology term used for mapping and comparing cells across experiments. Ensures consistency in analyzing cellular functions across tissues.
Fold Change: Represents the ratio of the current Cell Significance Index to the Cell Significance Index Threshold, indicating how much the gene expression has changed compared to a baseline.
Cell Significance Index: Reflects how strongly a gene is expressed in this specific cell.

Cell ID: Standard Cell Ontology term used for mapping and comparing cells across experiments. Ensures consistency in analyzing cellular functions across tissues.
Fold Change: Represents the ratio of the current Cell Significance Index to the Cell Significance Index Threshold, indicating how much the gene expression has changed compared to a baseline.
Cell Significance Index: Reflects how strongly a gene is expressed in this cell type. Calculated using techniques like effect size estimation and bootstrapping for reliability.

Cell ID: Standard Cell Ontology term used for mapping and comparing cells across experiments. Ensures consistency in analyzing cellular functions across tissues.
Fold Change: Represents the ratio of the current Cell Significance Index to the Cell Significance Index Threshold, indicating how much the gene expression has changed compared to a baseline.
Cell Significance Index: Reflects how strongly a gene is expressed in this cell type. Calculated using techniques like effect size estimation and bootstrapping for reliability.
Network Configuration

Explore relationships of the current gene. Select an Interaction Source: 'ONTOLOGY' for shared pathways (GO/Reactome) or 'STRING' for protein-protein interactions. Further refine by selecting context genes and comparing Cell Significance Index (CSI) scores between baseline and target cell types and their specific contexts.

Comma-separated if multiple.
Comma-separated if multiple.

Legend:
  • Query Gene
  • Node Color (Target Cell CSI, relative to current network):
    • Very High
    • High
    • Medium
    • Low
    • Very Low
    • CSI N/A
  • Node Size: Proportional to Target Cell CSI magnitude
  • STRING PPI Edge
  • Shared Pathway Edge (ONTOLOGY)

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Other Information

This section provides additional information about the gene, including a description generated by an AI language model and details about associated proteins.

## Summary [SERPINB9](/details-gene/5272), also known as Serpin B9, is a protein-coding gene located on chromosome 6. It belongs to the serpin (serine protease inhibitor) superfamily and functions primarily as a potent intracellular inhibitor of granzyme B, a key effector molecule in cytotoxic lymphocyte-mediated apoptosis ([Link](https://pubmed.ncbi.nlm.nih.gov/8910377/)). Its expression profile shows high significance in various immune cells, particularly professional antigen-presenting cells like [myeloid dendritic cells](/details-cell/CL0000782) and [Langerhans cells](/details-cell/CL0000453), suggesting a crucial role in regulating immune responses and protecting specific cell types from premature cell death. The gene is clinically associated with OMIM entry [601799](https://omim.org/entry/601799). ## Cellular Roles and Expression Landscape The expression pattern of [SERPINB9](/details-gene/5272) highlights its specialized role within the immune system and at sites of immune-maternal interaction. **Overall**, the gene demonstrates its highest significance in professional antigen-presenting cells (APCs) and other myeloid lineages. It is a top marker for [myeloid dendritic cells](/details-cell/CL0000782) (CSI: 27.08), [Langerhans cells](/details-cell/CL0000453) (CSI: 26.26), and various other [dendritic cell](/details-cell/CL0000451) subsets. Its high expression is also noted in [intermediate monocytes](/details-cell/CL0002393) and tissue-resident macrophages such as [lung interstitial macrophages](/details-cell/CL4033043) and [colon macrophages](/details-cell/CL0009038). This pattern suggests that [SERPINB9](/details-gene/5272) equips these cells with a protective mechanism to resist apoptosis induced by cytotoxic lymphocytes (e.g., NK cells or T cells), which is critical for sustained antigen presentation and the orchestration of adaptive immunity. Interestingly, [SERPINB9](/details-gene/5272) is also highly significant in non-immune cells at the feto-maternal interface, including [placental villous trophoblasts](/details-cell/CL2000060) and [extravillous trophoblasts](/details-cell/CL0008036). This expression is consistent with a role in protecting fetal-derived cells from the maternal immune system. Furthermore, its expression in [activated CD8-positive, alpha-beta T cells](/details-cell/CL0001049) suggests a potential self-regulatory or "fratricide-prevention" mechanism, whereby cytotoxic cells protect themselves from their own granzyme B activity. ## Pathways and Molecular Function The annotated functions of [SERPINB9](/details-gene/5272) are highly consistent with its observed cellular expression profile. Its core molecular function is as a [serine-type endopeptidase inhibitor](/details-go/GO:0004867) and a [cysteine-type endopeptidase inhibitor activity involved in apoptotic process](/details-go/GO:0043027). This inhibitory activity is central to its biological role in the [negative regulation of apoptotic process](/details-go/GO:0043066). Specifically, [SERPINB9](/details-gene/5272) is known to play a key role in the '[protection from natural killer cell mediated cytotoxicity](/details-go/GO:0042270)' pathway. By binding to and irreversibly inhibiting granzyme B, it prevents the activation of downstream caspases and the initiation of apoptosis. This mechanism is critical for the survival of cells that are targets of cytotoxic lymphocyte surveillance. The protein is predominantly found in the [cytoplasm](/details-go/GO:0005737) and [cytosol](/details-go/GO:0005829), the same compartment where granzyme B executes its function after being delivered into a target cell. Its involvement in the general '[immune response](/details-go/GO:0006955)' underscores its importance in modulating interactions between different arms of the immune system. ## Research Directions The specific expression pattern and anti-apoptotic function of [SERPINB9](/details-gene/5272) suggest several avenues for future research, particularly in immunology, oncology, and reproductive biology. Based on the available data, the following testable hypotheses can be proposed: 1. **Hypothesis 1:** Upregulation of [SERPINB9](/details-gene/5272) in tumor-infiltrating dendritic cells is a mechanism that promotes their survival and sustained antigen-presenting function within the hostile tumor microenvironment, thereby contributing to a more effective anti-tumor T cell response. 2. **Hypothesis 2:** [SERPINB9](/details-gene/5272) expression in trophoblast cells is essential for protecting the semi-allogeneic fetus from cytotoxic attack by maternal uterine natural killer cells, and its dysregulation may contribute to pregnancy complications such as pre-eclampsia or recurrent spontaneous abortion. **Proposed Experiment:** To test the second hypothesis regarding the role of [SERPINB9](/details-gene/5272) in feto-maternal tolerance, a co-culture experiment could be designed. CRISPR-Cas9 could be used to knock out [SERPINB9](/details-gene/5272) in a human extravillous trophoblast cell line (e.g., HTR-8/SVneo). These knockout cells, along with wild-type controls, would then be co-cultured with activated primary uterine NK cells isolated from healthy donors. Cell death in the trophoblast population would be quantified using flow cytometry for Annexin V/Propidium Iodide staining or by measuring lactate dehydrogenase (LDH) release. A significant increase in apoptosis in the [SERPINB9](/details-gene/5272)-knockout trophoblasts upon co-culture would confirm its protective role against NK cell-mediated cytotoxicity. **Therapeutic Potential:** The function of [SERPINB9](/details-gene/5272) as a cytoprotective agent makes it a compelling therapeutic target, particularly in oncology. Many cancer cells upregulate [SERPINB9](/details-gene/5272) as a mechanism of immune evasion, allowing them to resist killing by NK cells and cytotoxic T lymphocytes. Therefore, [SERPINB9](/details-gene/5272) is a candidate for therapeutic **inhibition**. The development of small molecule inhibitors targeting its intracellular activity could re-sensitize resistant tumors to the body's natural anti-cancer immune response and could act synergistically with immune checkpoint inhibitors or adoptive cell therapies like CAR-T.

Genular Protein ID: 263231482

Symbol: SPB9_HUMAN

Name: Serpin B9

UniProtKB Accession Codes:

Database IDs:

Citations:

PubMed ID: 8530382

Title: Molecular cloning, expression, and partial characterization of two novel members of the ovalbumin family of serine proteinase inhibitors.

PubMed ID: 8530382

DOI: 10.1074/jbc.270.50.29854

PubMed ID: 8910377

Title: A cytosolic granzyme B inhibitor related to the viral apoptotic regulator cytokine response modifier A is present in cytotoxic lymphocytes.

PubMed ID: 8910377

DOI: 10.1074/jbc.271.44.27802

PubMed ID: 14702039

Title: Complete sequencing and characterization of 21,243 full-length human cDNAs.

PubMed ID: 14702039

DOI: 10.1038/ng1285

PubMed ID: 14574404

Title: The DNA sequence and analysis of human chromosome 6.

PubMed ID: 14574404

DOI: 10.1038/nature02055

PubMed ID: 15489334

Title: The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC).

PubMed ID: 15489334

DOI: 10.1101/gr.2596504

PubMed ID: 21269460

Title: Initial characterization of the human central proteome.

PubMed ID: 21269460

DOI: 10.1186/1752-0509-5-17

PubMed ID: 22223895

Title: Comparative large-scale characterisation of plant vs. mammal proteins reveals similar and idiosyncratic N-alpha acetylation features.

PubMed ID: 22223895

DOI: 10.1074/mcp.m111.015131

PubMed ID: 22814378

Title: N-terminal acetylome analyses and functional insights of the N-terminal acetyltransferase NatB.

PubMed ID: 22814378

DOI: 10.1073/pnas.1210303109

PubMed ID: 24275569

Title: An enzyme assisted RP-RPLC approach for in-depth analysis of human liver phosphoproteome.

PubMed ID: 24275569

DOI: 10.1016/j.jprot.2013.11.014

Sequence Information:

  • Length: 376
  • Mass: 42404
  • Checksum: ECBA80869B939753
  • Sequence:
  • METLSNASGT FAIRLLKILC QDNPSHNVFC SPVSISSALA MVLLGAKGNT ATQMAQALSL 
    NTEEDIHRAF QSLLTEVNKA GTQYLLRTAN RLFGEKTCQF LSTFKESCLQ FYHAELKELS 
    FIRAAEESRK HINTWVSKKT EGKIEELLPG SSIDAETRLV LVNAIYFKGK WNEPFDETYT 
    REMPFKINQE EQRPVQMMYQ EATFKLAHVG EVRAQLLELP YARKELSLLV LLPDDGVELS 
    TVEKSLTFEK LTAWTKPDCM KSTEVEVLLP KFKLQEDYDM ESVLRHLGIV DAFQQGKADL 
    SAMSAERDLC LSKFVHKSFV EVNEEGTEAA AASSCFVVAE CCMESGPRFC ADHPFLFFIR 
    HNRANSILFC GRFSSP