Details for: KLF9

Gene ID: 687

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: KLF9

Ensembl ID: ENSG00000119138

Description: KLF transcription factor 9

Selected Context(s):  Overall

Cell Significance Landscape

Contexts:

Associated with

Significant Cells

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

  • keratocyte CL0002363
    CSI 30.98
    rCSI 74.48%
    PRS 54.27
  • megakaryocyte-erythroid progenitor cell CL0000050
    CSI 19.02
    rCSI 17.17%
    PRS 40.87
  • perivascular cell CL4033054
    CSI 18.6
    rCSI 25.43%
    PRS 49.01
  • alveolar adventitial fibroblast CL4028006
    CSI 17.86
    rCSI 28.21%
    PRS 45.13
  • enteroglial cell CL4040002
    CSI 15.45
    rCSI 81.2%
    PRS 52.59
  • stromal cell of ovary CL0002132
    CSI 14.7
    rCSI 40.39%
    PRS 59.48
  • microcirculation associated smooth muscle cell CL0008035
    CSI 14.53
    rCSI 42.08%
    PRS 46.6
  • intestine goblet cell CL0019031
    CSI 13.85
    rCSI 12.29%
    PRS 43.24
  • bronchus fibroblast of lung CL2000093
    CSI 12.63
    rCSI 10.26%
    PRS 44.87
  • retinal blood vessel endothelial cell CL0002585
    CSI 12.41
    rCSI 19.81%
    PRS 47.87
  • pulmonary artery endothelial cell CL1001568
    CSI 11.3
    rCSI 15.37%
    PRS 56.89
  • myofibroblast cell CL0000186
    CSI 11.25
    rCSI 15.58%
    PRS 49.08
  • skin fibroblast CL0002620
    CSI 11.1
    rCSI 9.57%
    PRS 52.63
  • adventitial cell CL0002503
    CSI 9.24
    rCSI 22.06%
    PRS 54.67
  • central memory CD8-positive, alpha-beta T cell CL0000907
    CSI 9.15
    rCSI 6.16%
    PRS 54.24
  • astrocyte of the cerebral cortex CL0002605
    CSI 9.12
    rCSI 20.46%
    PRS 29.68
  • tissue-resident macrophage CL0000864
    CSI 9.11
    rCSI 42.65%
    PRS 62.84
  • T follicular helper cell CL0002038
    CSI 9.03
    rCSI 6.76%
    PRS 58.66
  • epithelial cell of lower respiratory tract CL0002632
    CSI 8.06
    rCSI 6.25%
    PRS 44.56
  • type B pancreatic cell CL0000169
    CSI 8.04
    rCSI 17.79%
    PRS 41.53
  • alveolar type 1 fibroblast cell CL4028004
    CSI 8.02
    rCSI 8.78%
    PRS 47.94
  • endothelial cell of arteriole CL1000412
    CSI 7.96
    rCSI 44.16%
    PRS 67.33
  • ciliated epithelial cell CL0000067
    CSI 7.82
    rCSI 6.88%
    PRS 33.69
  • blood vessel endothelial cell CL0000071
    CSI 7.58
    rCSI 15.73%
    PRS 42.06
  • goblet cell CL0000160
    CSI 7.5
    rCSI 7.09%
    PRS 45.1
  • pancreatic stellate cell CL0002410
    CSI 7.32
    rCSI 42.57%
    PRS 55.18
  • effector CD4-positive, alpha-beta T cell CL0001044
    CSI 7.19
    rCSI 20.61%
    PRS 61.6
  • mesenchymal stem cell of adipose tissue CL0002570
    CSI 6.95
    rCSI 38.75%
    PRS 62.19
  • vasa recta ascending limb cell CL1001131
    CSI 6.81
    rCSI 30.8%
    PRS 71.42
  • activated CD4-positive, alpha-beta T cell CL0000896
    CSI 6.58
    rCSI 6.08%
    PRS 64.26
  • blood vessel smooth muscle cell CL0019018
    CSI 6.49
    rCSI 52.82%
    PRS 38.88
  • pulmonary capillary endothelial cell CL4028001
    CSI 6.46
    rCSI 12.32%
    PRS 60.72
  • stromal cell CL0000499
    CSI 6.37
    rCSI 17.91%
    PRS 44.3
  • class switched memory B cell CL0000972
    CSI 6.09
    rCSI 4.55%
    PRS 62.54
  • endothelial cell of lymphatic vessel CL0002138
    CSI 5.81
    rCSI 11.51%
    PRS 66.97
  • plasmablast CL0000980
    CSI 5.79
    rCSI 4.55%
    PRS 50.52
  • vein endothelial cell of respiratory system CL4033008
    CSI 5.68
    rCSI 39.03%
    PRS 62.32
  • CD4-positive, alpha-beta memory T cell CL0000897
    CSI 5.57
    rCSI 4%
    PRS 56.93
  • capillary endothelial cell CL0002144
    CSI 5.53
    rCSI 10.14%
    PRS 66.78
  • vascular associated smooth muscle cell CL0000359
    CSI 5.19
    rCSI 16.82%
    PRS 46.88
  • L5 extratelencephalic projecting glutamatergic cortical neuron CL4023041
    CSI 4.99
    rCSI 17.97%
    PRS 27.96
  • lung ciliated cell CL1000271
    CSI 4.83
    rCSI 5.58%
    PRS 34.64
  • Mueller cell CL0000636
    CSI 4.76
    rCSI 10.87%
    PRS 37.83
  • kidney loop of Henle thin descending limb epithelial cell CL1001111
    CSI 4.66
    rCSI 6.61%
    PRS 41.21
  • paneth cell of epithelium of small intestine CL1000343
    CSI 4.55
    rCSI 12.75%
    PRS 58.64
  • fibroblast of lung CL0002553
    CSI 4.5
    rCSI 4.19%
    PRS 43.95
  • fallopian tube secretory epithelial cell CL4030006
    CSI 4.32
    rCSI 4.16%
    PRS 44.69
  • conjunctival epithelial cell CL1000432
    CSI 4.31
    rCSI 6.58%
    PRS 44.81
  • adipocyte CL0000136
    CSI 4.19
    rCSI 5.38%
    PRS 39.81
  • vein endothelial cell CL0002543
    CSI 4.18
    rCSI 11.42%
    PRS 72.35
  • lung neuroendocrine cell CL1000223
    CSI 4.12
    rCSI 6.1%
    PRS 49.09
  • platelet CL0000233
    CSI 4.1
    rCSI 17.02%
    PRS 53.55
  • immature B cell CL0000816
    CSI 4.06
    rCSI 3.02%
    PRS 57.18
  • double negative thymocyte CL0002489
    CSI 3.91
    rCSI 2.72%
    PRS 52.55
  • granulocyte CL0000094
    CSI 3.87
    rCSI 5.92%
    PRS 53.19
  • CD1c-positive myeloid dendritic cell CL0002399
    CSI 3.8
    rCSI 4.59%
    PRS 51.83
  • dendritic cell, human CL0001056
    CSI 3.65
    rCSI 5.61%
    PRS 51.04
  • kidney loop of Henle thin ascending limb epithelial cell CL1001107
    CSI 3.64
    rCSI 9.4%
    PRS 40.49
  • ON-bipolar cell CL0000749
    CSI 3.41
    rCSI 5.07%
    PRS 46.7
  • multi-ciliated epithelial cell CL0005012
    CSI 3.4
    rCSI 3.4%
    PRS 38.6
  • activated type II NK T cell CL0000931
    CSI 3.37
    rCSI 3.79%
    PRS 60.47
  • cardiac endothelial cell CL0010008
    CSI 3.28
    rCSI 13.22%
    PRS 42.68
  • tracheobronchial smooth muscle cell CL0019019
    CSI 3.23
    rCSI 5.7%
    PRS 52.67
  • centrilobular region hepatocyte CL0019029
    CSI 3.23
    rCSI 8.42%
    PRS 52.46
  • melanocyte CL0000148
    CSI 3.17
    rCSI 2.35%
    PRS 38.01
  • ependymal cell CL0000065
    CSI 3.11
    rCSI 6.31%
    PRS 27.29
  • lung microvascular endothelial cell CL2000016
    CSI 3.03
    rCSI 58.53%
    PRS 68.85
  • epithelial cell of proximal tubule CL0002306
    CSI 3.02
    rCSI 7.39%
    PRS 40.31
  • Schwann cell CL0002573
    CSI 3.01
    rCSI 8.56%
    PRS 44.14
  • vascular leptomeningeal cell CL4023051
    CSI 2.97
    rCSI 5.21%
    PRS 36.73
  • cytotoxic T cell CL0000910
    CSI 2.95
    rCSI 16.9%
    PRS 56.3
  • effector CD8-positive, alpha-beta T cell CL0001050
    CSI 2.81
    rCSI 2.14%
    PRS 55.37
  • lung interstitial macrophage CL4033043
    CSI 2.8
    rCSI 6.28%
    PRS 64.02
  • cerebral cortex endothelial cell CL1001602
    CSI 2.76
    rCSI 4.77%
    PRS 35.18
  • hematopoietic stem cell CL0000037
    CSI 2.75
    rCSI 1.82%
    PRS 47.91
  • skeletal muscle satellite stem cell CL0008011
    CSI 2.74
    rCSI 12.23%
    PRS 67.18
  • IgA plasma cell CL0000987
    CSI 2.64
    rCSI 2.7%
    PRS 62.63
  • L6b glutamatergic cortical neuron CL4023038
    CSI 2.62
    rCSI 8.19%
    PRS 30.18
  • respiratory basal cell CL0002633
    CSI 2.61
    rCSI 2.7%
    PRS 49.92
  • mucus secreting cell CL0000319
    CSI 2.55
    rCSI 4.05%
    PRS 54.72
  • lung secretory cell CL1000272
    CSI 2.55
    rCSI 6.3%
    PRS 42.19
  • innate lymphoid cell CL0001065
    CSI 2.49
    rCSI 5.15%
    PRS 50.55
  • mature T cell CL0002419
    CSI 2.47
    rCSI 1.92%
    PRS 60.85
  • endocardial cell CL0002350
    CSI 2.43
    rCSI 11.64%
    PRS 45.69
  • basal cell CL0000646
    CSI 2.42
    rCSI 3.24%
    PRS 45.66
  • fibroblast of breast CL4006000
    CSI 2.39
    rCSI 10.03%
    PRS 65.79
  • lung pericyte CL0009089
    CSI 2.38
    rCSI 6.28%
    PRS 51.62
  • hepatic stellate cell CL0000632
    CSI 2.36
    rCSI 8.85%
    PRS 37.47
  • peptic cell CL0000155
    CSI 2.31
    rCSI 22.71%
    PRS 71.04
  • mononuclear phagocyte CL0000113
    CSI 2.29
    rCSI 5.05%
    PRS 48.06
  • rod bipolar cell CL0000751
    CSI 2.27
    rCSI 4.08%
    PRS 37.75
  • collagen secreting cell CL0000667
    CSI 2.25
    rCSI 12.92%
    PRS 69.83
  • Kupffer cell CL0000091
    CSI 2.25
    rCSI 5.15%
    PRS 43.53
  • epithelial cell of lung CL0000082
    CSI 2.21
    rCSI 1.83%
    PRS 42.65
  • basal cell of prostate epithelium CL0002341
    CSI 2.2
    rCSI 6.36%
    PRS 61.78
  • sst GABAergic cortical interneuron CL4023017
    CSI 2.18
    rCSI 2.81%
    PRS 29.9
  • midzonal region hepatocyte CL0019028
    CSI 2.13
    rCSI 5%
    PRS 53.28
  • CD4-positive helper T cell CL0000492
    CSI 2.09
    rCSI 1.58%
    PRS 56.31
  • intestinal crypt stem cell of small intestine CL0009017
    CSI 2.03
    rCSI 5.47%
    PRS 52.89
  • alpha-beta T cell CL0000789
    CSI 2.02
    rCSI 2.36%
    PRS 59.6
  • regular ventricular cardiac myocyte CL0002131
    CSI 0.2
    rCSI 1.1%
    PRS 36.9%
  • respiratory goblet cell CL0002370
    CSI 0.2
    rCSI 2.0%
    PRS 64.6%
  • bronchiolar smooth muscle cell CL4033017
    CSI 0.3
    rCSI 4.1%
    PRS 68.8%
  • tracheobronchial serous cell CL0019001
    CSI 0.3
    rCSI 1.2%
    PRS 60.5%
  • P/D1 enteroendocrine cell CL0002268
    CSI 0.3
    rCSI 1.8%
    PRS 66.5%
  • corticothalamic-projecting glutamatergic cortical neuron CL4023013
    CSI 0.3
    rCSI 2.0%
    PRS 30.4%
  • effector memory CD8-positive, alpha-beta T cell, terminally differentiated CL0001062
    CSI 0.4
    rCSI 2.2%
    PRS 55.1%
  • helper T cell CL0000912
    CSI 0.5
    rCSI 0.6%
    PRS 53.0%
  • enterocyte of epithelium of large intestine CL0002071
    CSI 0.6
    rCSI 2.9%
    PRS 58.8%
  • L2/3 intratelencephalic projecting glutamatergic neuron CL4030059
    CSI 0.6
    rCSI 1.2%
    PRS 34.7%
  • luminal epithelial cell of mammary gland CL0002326
    CSI 0.6
    rCSI 1.1%
    PRS 60.4%
  • enteroendocrine cell CL0000164
    CSI 0.6
    rCSI 0.8%
    PRS 46.8%
  • lamp5 GABAergic cortical interneuron CL4023011
    CSI 0.6
    rCSI 1.0%
    PRS 29.0%
  • endothelial cell of uterus CL0009095
    CSI 0.7
    rCSI 4.8%
    PRS 69.7%
  • smooth muscle cell of the pulmonary artery CL0002591
    CSI 0.7
    rCSI 5.3%
    PRS 62.3%
  • retinal ganglion cell CL0000740
    CSI 0.7
    rCSI 1.6%
    PRS 32.9%
  • cholangiocyte CL1000488
    CSI 0.7
    rCSI 4.3%
    PRS 58.1%
  • L5/6 near-projecting glutamatergic neuron CL4030067
    CSI 0.8
    rCSI 2.5%
    PRS 33.5%
  • L4 intratelencephalic projecting glutamatergic neuron CL4030063
    CSI 0.8
    rCSI 1.8%
    PRS 34.0%
  • melanocyte of skin CL1000458
    CSI 0.8
    rCSI 1.0%
    PRS 22.9%
  • CD8-positive, alpha-beta memory T cell, CD45RO-positive CL0001203
    CSI 0.8
    rCSI 1.0%
    PRS 39.7%
  • parietal epithelial cell CL1000452
    CSI 0.8
    rCSI 2.2%
    PRS 37.3%
  • endothelial cell of venule CL1000414
    CSI 0.8
    rCSI 7.4%
    PRS 72.7%
  • duct epithelial cell CL0000068
    CSI 0.8
    rCSI 1.2%
    PRS 47.1%
  • luminal cell of prostate epithelium CL0002340
    CSI 0.9
    rCSI 4.6%
    PRS 59.4%
  • regular atrial cardiac myocyte CL0002129
    CSI 0.9
    rCSI 2.9%
    PRS 43.5%
  • renal interstitial pericyte CL1001318
    CSI 0.9
    rCSI 2.6%
    PRS 41.0%
  • colonocyte CL1000347
    CSI 0.9
    rCSI 1.4%
    PRS 51.5%
  • foveolar cell of stomach CL0002179
    CSI 1.0
    rCSI 2.1%
    PRS 59.1%
  • CD8-positive, alpha-beta cytotoxic T cell CL0000794
    CSI 1.0
    rCSI 1.2%
    PRS 64.4%
  • intestinal crypt stem cell of colon CL0009043
    CSI 1.0
    rCSI 7.6%
    PRS 64.4%
  • mucous neck cell CL0000651
    CSI 1.0
    rCSI 1.5%
    PRS 57.6%
  • VIP GABAergic cortical interneuron CL4023016
    CSI 1.0
    rCSI 1.2%
    PRS 29.0%
  • Bergmann glial cell CL0000644
    CSI 1.0
    rCSI 1.4%
    PRS 40.6%
  • myeloid dendritic cell CL0000782
    CSI 1.0
    rCSI 1.5%
    PRS 60.3%
  • fast muscle cell CL0000190
    CSI 1.0
    rCSI 4.1%
    PRS 55.2%
  • pancreatic A cell CL0000171
    CSI 1.1
    rCSI 1.1%
    PRS 46.9%
  • suprabasal keratinocyte CL4033013
    CSI 1.1
    rCSI 1.7%
    PRS 23.6%
  • endothelial cell of pericentral hepatic sinusoid CL0019022
    CSI 1.1
    rCSI 3.3%
    PRS 56.1%
  • kidney interstitial alternatively activated macrophage CL1000695
    CSI 1.1
    rCSI 2.8%
    PRS 43.2%
  • L2/3-6 intratelencephalic projecting glutamatergic neuron CL4023040
    CSI 1.1
    rCSI 2.6%
    PRS 28.2%
  • glycinergic amacrine cell CL4030028
    CSI 1.1
    rCSI 2.8%
    PRS 43.9%
  • cardiac muscle cell CL0000746
    CSI 1.1
    rCSI 1.5%
    PRS 35.8%
  • small intestine goblet cell CL1000495
    CSI 1.1
    rCSI 2.4%
    PRS 54.1%
  • retinal pigment epithelial cell CL0002586
    CSI 1.1
    rCSI 2.2%
    PRS 43.5%
  • T-helper 1 cell CL0000545
    CSI 1.1
    rCSI 2.0%
    PRS 70.6%
  • CD14-low, CD16-positive monocyte CL0002396
    CSI 1.1
    rCSI 0.9%
    PRS 43.0%
  • near-projecting glutamatergic cortical neuron CL4023012
    CSI 1.2
    rCSI 4.4%
    PRS 30.0%
  • retina horizontal cell CL0000745
    CSI 1.2
    rCSI 1.8%
    PRS 41.0%
  • direct pathway medium spiny neuron CL4023026
    CSI 1.2
    rCSI 27.9%
    PRS 28.5%
  • nasal mucosa goblet cell CL0002480
    CSI 1.2
    rCSI 1.4%
    PRS 54.8%
  • pvalb GABAergic cortical interneuron CL4023018
    CSI 1.2
    rCSI 1.5%
    PRS 27.6%
  • periportal region hepatocyte CL0019026
    CSI 1.2
    rCSI 4.7%
    PRS 53.0%
  • basal cell of epidermis CL0002187
    CSI 1.2
    rCSI 2.2%
    PRS 27.4%
  • mature B cell CL0000785
    CSI 1.2
    rCSI 1.1%
    PRS 53.4%
  • muscle cell CL0000187
    CSI 1.3
    rCSI 2.6%
    PRS 66.3%
  • smooth muscle cell of prostate CL1000487
    CSI 1.3
    rCSI 7.5%
    PRS 70.4%
  • colon macrophage CL0009038
    CSI 1.3
    rCSI 6.0%
    PRS 66.6%
  • basal-myoepithelial cell of mammary gland CL0002324
    CSI 1.3
    rCSI 2.5%
    PRS 67.2%
  • lung macrophage CL1001603
    CSI 1.3
    rCSI 3.0%
    PRS 50.7%
  • indirect pathway medium spiny neuron CL4023029
    CSI 1.4
    rCSI 32.7%
    PRS 29.4%
  • megakaryocyte CL0000556
    CSI 1.4
    rCSI 5.9%
    PRS 59.7%
  • CD14-positive, CD16-positive monocyte CL0002397
    CSI 1.4
    rCSI 1.8%
    PRS 57.1%
  • BEST4+ enteroycte CL4030026
    CSI 1.4
    rCSI 1.7%
    PRS 46.8%
  • renal alpha-intercalated cell CL0005011
    CSI 1.4
    rCSI 1.9%
    PRS 52.6%
  • pancreatic acinar cell CL0002064
    CSI 1.4
    rCSI 1.9%
    PRS 48.9%
  • intrahepatic cholangiocyte CL0002538
    CSI 1.5
    rCSI 3.5%
    PRS 59.9%
  • keratinocyte CL0000312
    CSI 1.5
    rCSI 1.2%
    PRS 49.1%
  • pancreatic PP cell CL0002275
    CSI 1.5
    rCSI 5.8%
    PRS 59.4%
  • choroid plexus epithelial cell CL0000706
    CSI 1.5
    rCSI 2.4%
    PRS 35.2%
  • glial cell CL0000125
    CSI 1.5
    rCSI 5.7%
    PRS 37.8%
  • glandular epithelial cell CL0000150
    CSI 1.5
    rCSI 4.0%
    PRS 66.7%
  • alveolar macrophage CL0000583
    CSI 1.5
    rCSI 2.5%
    PRS 49.7%
  • cerebral cortex neuron CL0010012
    CSI 1.5
    rCSI 6.2%
    PRS 41.7%
  • retinal bipolar neuron CL0000748
    CSI 1.6
    rCSI 2.9%
    PRS 34.3%
  • group 3 innate lymphoid cell CL0001071
    CSI 1.6
    rCSI 1.2%
    PRS 47.5%
  • respiratory suprabasal cell CL4033048
    CSI 1.6
    rCSI 2.0%
    PRS 48.9%
  • endothelial cell of periportal hepatic sinusoid CL0019021
    CSI 1.6
    rCSI 7.4%
    PRS 63.4%
  • elicited macrophage CL0000861
    CSI 1.6
    rCSI 1.5%
    PRS 51.5%
  • cardiac neuron CL0010022
    CSI 1.7
    rCSI 5.3%
    PRS 41.1%
  • enteric smooth muscle cell CL0002504
    CSI 1.7
    rCSI 2.4%
    PRS 46.8%
  • acinar cell of salivary gland CL0002623
    CSI 1.7
    rCSI 38.6%
    PRS 66.9%
  • T-helper 17 cell CL0000899
    CSI 1.7
    rCSI 1.3%
    PRS 66.1%
  • intermediate monocyte CL0002393
    CSI 1.7
    rCSI 2.6%
    PRS 46.2%
  • colon epithelial cell CL0011108
    CSI 1.7
    rCSI 1.8%
    PRS 41.5%
  • alternatively activated macrophage CL0000890
    CSI 1.7
    rCSI 2.2%
    PRS 57.7%
  • myoepithelial cell CL0000185
    CSI 1.8
    rCSI 4.4%
    PRS 52.4%
  • hepatocyte CL0000182
    CSI 1.8
    rCSI 3.2%
    PRS 42.5%
  • fibroblast of cardiac tissue CL0002548
    CSI 1.8
    rCSI 8.6%
    PRS 42.6%
  • CD4-positive, CD25-positive, alpha-beta regulatory T cell CL0000792
    CSI 1.8
    rCSI 1.8%
    PRS 59.4%
  • cerebellar granule cell CL0001031
    CSI 1.9
    rCSI 2.8%
    PRS 40.3%
  • ionocyte CL0005006
    CSI 1.9
    rCSI 2.0%
    PRS 42.2%
  • naive T cell CL0000898
    CSI 1.9
    rCSI 1.3%
    PRS 56.8%
  • caudal ganglionic eminence derived cortical interneuron CL4023064
    CSI 1.9
    rCSI 3.4%
    PRS 28.1%
  • central memory CD4-positive, alpha-beta T cell CL0000904
    CSI 1.9
    rCSI 1.1%
    PRS 59.1%
  • chondrocyte CL0000138
    CSI 1.9
    rCSI 3.1%
    PRS 37.5%
  • alpha-beta T cell CL0000789
    CSI 2.0
    rCSI 2.4%
    PRS 59.6%
  • intestinal crypt stem cell of small intestine CL0009017
    CSI 2.0
    rCSI 5.5%
    PRS 52.9%
  • CD4-positive helper T cell CL0000492
    CSI 2.1
    rCSI 1.6%
    PRS 56.3%
  • midzonal region hepatocyte CL0019028
    CSI 2.1
    rCSI 5.0%
    PRS 53.3%

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 [KLF9](/details-gene/687), or Krueppel-like factor 9, is a protein-coding gene located on chromosome 9q21.12. It encodes a zinc-finger transcription factor that belongs to the KLF family, known for regulating a wide array of cellular processes by binding to GC-rich DNA sequences. Functionally, [KLF9](/details-gene/687) is involved in the regulation of transcription, cellular responses to cortisol, and the control of circadian rhythm ([GO:0007623](https://www.ebi.ac.uk/QuickGO/term/GO:0007623)). Research has specifically implicated it in controlling the proliferation of [keratinocytes](/details-cell/CL0002363) ([Link](https://doi.org/10.1073/pnas.1118641109)). Expression data from the **Overall** context indicates that [KLF9](/details-gene/687) has its highest significance in various structural, stromal, and progenitor cell types, including [keratocytes](/details-cell/CL0002363), [megakaryocyte-erythroid progenitor cells](/details-cell/CL0000050), and multiple types of fibroblasts and perivascular cells. ## Cellular Roles and Expression Landscape The expression profile of [KLF9](/details-gene/687) suggests a foundational role in tissue structure, maintenance, and development rather than in effector immune functions. **Overall**, the gene shows the highest significance in [keratocytes](/details-cell/CL0002363) (CSI: 30.98), the primary cell type of the cornea and epidermis, highlighting its importance in epithelial biology. A broader analysis of its top expression contexts reveals a consistent pattern of significance in mesenchymal and progenitor cell populations. This includes high CSI scores in hematopoietic progenitors like [megakaryocyte-erythroid progenitor cells](/details-cell/CL0000050) (CSI: 19.02), suggesting a role in early blood cell development. Furthermore, [KLF9](/details-gene/687) is highly significant across a spectrum of stromal and vascular-associated cells, such as [perivascular cells](/details-cell/CL4033054) (CSI: 18.60), [alveolar adventitial fibroblasts](/details-cell/CL4028006) (CSI: 17.86), [myofibroblast cells](/details-cell/CL0000186) (CSI: 11.25), and [skin fibroblasts](/details-cell/CL0002620) (CSI: 11.10). This widespread expression in fibroblasts from different tissues (lung, skin) and in cells involved in tissue remodeling ([myofibroblasts](/details-cell/CL0000186)) points towards a role in regulating the extracellular matrix and wound healing responses. Its presence in various endothelial cells, including [retinal blood vessel endothelial cells](/details-cell/CL0002585) (CSI: 12.41) and [pulmonary artery endothelial cells](/details-cell/CL1001568) (CSI: 11.30), further implicates it in vascular biology. ## Pathways and Molecular Function Functionally, [KLF9](/details-gene/687) operates as a DNA-binding transcription factor. Its molecular function is characterized by [DNA-binding transcription factor activity, RNA polymerase II-specific](/details-cell/GO:0000981) and the ability to bind metal ions ([GO:0046872](https://www.ebi.ac.uk/QuickGO/term/GO:0046872)), which is typical for zinc-finger proteins. Cellularly, it is localized primarily to the [nucleus](/details-cell/GO:0005634) and [nucleoplasm](/details-cell/GO:0005654), where it can access [chromatin](/details-cell/GO:0000785) to regulate gene expression. The biological processes associated with [KLF9](/details-gene/687) are consistent with its expression pattern. Its role in the [negative regulation of keratinocyte proliferation](/details-cell/GO:0010839) aligns perfectly with its top significance score in [keratocytes](/details-cell/CL0002363) and has been experimentally validated ([Link](https://doi.org/10.1073/pnas.1118641109)). This study established [KLF9](/details-gene/687) as a circadian transcription factor in the human epidermis, linking the body's internal clock to skin cell proliferation cycles. Additionally, its involvement in the [cellular response to cortisol stimulus](/details-cell/GO:0071387) suggests it acts as a downstream effector of glucocorticoid signaling, a major pathway regulating stress, metabolism, and inflammation across many of the cell types where it is expressed. ## Research Directions The widespread significance of [KLF9](/details-gene/687) in fibroblasts and myofibroblasts makes it a compelling candidate for investigation in the context of pathological tissue remodeling and fibrosis. ### Proposed Hypotheses 1. **[KLF9](/details-gene/687) is a critical regulator of fibroblast-to-myofibroblast differentiation during tissue fibrosis.** Given its high significance in multiple fibroblast populations ([alveolar adventitial fibroblast](/details-cell/CL4028006), [skin fibroblast](/details-cell/CL0002620)) and in [myofibroblast cells](/details-cell/CL0000186), [KLF9](/details-gene/687) may act as a transcriptional switch that is activated by pro-fibrotic signals (e.g., TGF-β) to drive the expression of genes responsible for extracellular matrix deposition and contraction. 2. **In the hematopoietic system, [KLF9](/details-gene/687) influences lineage commitment within the megakaryocyte-erythroid lineage.** Its high CSI in [megakaryocyte-erythroid progenitor cells](/details-cell/CL0000050) suggests it may regulate key developmental genes that determine whether a progenitor cell commits to becoming a platelet-producing megakaryocyte or a red blood cell. ### Key Experiment To test the first hypothesis regarding the role of [KLF9](/details-gene/687) in fibrosis, a loss-of-function study could be performed. Primary human lung fibroblasts could be transfected with siRNA targeting [KLF9](/details-gene/687) or a non-targeting control. The cells would then be stimulated with TGF-β1 to induce myofibroblast differentiation. The effects of [KLF9](/details-gene/687) knockdown would be assessed by measuring the expression of key myofibroblast markers, such as alpha-smooth muscle actin (ACTA2) and Collagen Type I (COL1A1), using qPCR and Western blot analysis. A collagen gel contraction assay could also be used to functionally assess the impact on the cells' contractile ability. ### Therapeutic Potential As a nuclear transcription factor, [KLF9](/details-gene/687) represents a challenging direct therapeutic target for small molecule inhibitors. However, if it is proven to be a key driver of pathological processes like fibrosis, it could be an important downstream node for therapeutic intervention. Strategies could focus on inhibiting its transcriptional activity or disrupting its interaction with essential co-regulators ([Link](https://doi.org/10.1016/j.jmb.2020.11.021)). In diseases characterized by excessive fibrosis (e.g., idiopathic pulmonary fibrosis, scleroderma), **inhibition** of the KLF9 pathway would be the desired therapeutic goal to reduce myofibroblast activation and matrix deposition.

Genular Protein ID: 3084599731

Symbol: KLF9_HUMAN

Name: Krueppel-like factor 9

UniProtKB Accession Codes:

Database IDs:

Citations:

PubMed ID: 8291025

Title: Chromosomal localization and cDNA sequence of human BTEB, a GC box binding protein.

PubMed ID: 8291025

DOI: 10.1007/bf01233255

PubMed ID: 14702039

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

PubMed ID: 14702039

DOI: 10.1038/ng1285

PubMed ID: 15164053

Title: DNA sequence and analysis of human chromosome 9.

PubMed ID: 15164053

DOI: 10.1038/nature02465

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: 8051167

Title: Cell-specific translational control of transcription factor BTEB expression. The role of an upstream AUG in the 5'-untranslated region.

PubMed ID: 8051167

DOI: 10.1016/s0021-9258(17)32045-8

PubMed ID: 22711835

Title: Kruppel-like factor 9 is a circadian transcription factor in human epidermis that controls proliferation of keratinocytes.

PubMed ID: 22711835

DOI: 10.1073/pnas.1118641109

PubMed ID: 23186163

Title: Toward a comprehensive characterization of a human cancer cell phosphoproteome.

PubMed ID: 23186163

DOI: 10.1021/pr300630k

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

PubMed ID: 33227311

Title: ZZEF1 is a Histone Reader and Transcriptional Coregulator of Krueppel-Like Factors.

PubMed ID: 33227311

DOI: 10.1016/j.jmb.2020.11.021

Sequence Information:

  • Length: 244
  • Mass: 27235
  • Checksum: 2D1B5A5BB9D42221
  • Sequence:
  • MSAAAYMDFV AAQCLVSISN RAAVPEHGVA PDAERLRLPE REVTKEHGDP GDTWKDYCTL 
    VTIAKSLLDL NKYRPIQTPS VCSDSLESPD EDMGSDSDVT TESGSSPSHS PEERQDPGSA 
    PSPLSLLHPG VAAKGKHASE KRHKCPYSGC GKVYGKSSHL KAHYRVHTGE RPFPCTWPDC 
    LKKFSRSDEL TRHYRTHTGE KQFRCPLCEK RFMRSDHLTK HARRHTEFHP SMIKRSKKAL 
    ANAL