EIF2AK4 Antibody

1. Heritable pulmonary arterial hypertension is an autosomal dominant disease characterized by reduced penetrance, variable expressivity, and female predominance. Biallelic germline mutations in the gene EIF2AK4 are now associated with pulmonary veno-occlusive disease and pulmonary capillary hemangiomatosis. [review] PMID: 29032562
2. GCN2 level was closely associateed with PRCC clinical parameters, larger tumor size, higher TNM stage, higher Fuhurman Grade, and lymph node metastasis. GCN2 overexpression is a prognostic biomarker linked to decreased OS and PFS of PRCC patients. PMID: 29865032
3. basal ASNS expression at protein levels was significantly correlated with sensitivity to combined treatment. These results provide mechanistic insights into the role of GCN2 in the amino acid response and a rationale for further investigation of GCN2 inhibitors for the treatment of cancer. PMID: 30061420
4. The biallelic founder mutation in EIF2AK4 was found in all affected cases and 2 unaffected relatives. Family screening showed 34.2% of healthy heterozygotes, high consanguinity, young age at childbirth, and frequent multiparity. Prognosis was bleak, with significant differences depending on tolerance to PVD. PMID: 28697925
5. Heritable Pulmonary Veno-occlusive Disease and/or Pulmonary Capillary Hemangiomatosis is an autosomal recessive disease because of biallelic mutations in the eukaryotic translation initiation factor 2 alpha kinase 4 gene. PMID: 28661905
6. EIF2AK4 mutations can also contribute to autosomal dominantly inherited pulmonary arterial hypertension. PMID: 27809840
7. Heritable pulmonary veno-occlusive disease and/or pulmonary capillary haemangiomatosis due to bi-allelic EIF2AK4 mutations is characterised by a younger age at diagnosis but these patients display similar disease severity compared with mutation non-carriers. Response to therapy approved for pulmonary arterial hypertension in pulmonary veno-occlusive disease and/or pulmonary capillary haemangiomatosis is rare. PMID: 28087362
8. Biallelic EIF2AK4 mutations are found in patients classified clinically as having idiopathic and heritable pulmonary arterial hypertension. PMID: 28972005
9. Data show that siRNA-mediated depletion of general control nonderepressible 2 (GCN2) increases small RNA transcripts such as tRNA and 5S rRNA, and induces the p53 pathway activation. PMID: 28189689
10. in response to vemurafenib, BRAF-mutated melanoma and colorectal cancer cells rapidly induced the ISR as a cytoprotective mechanism through activation of general control nonderepressible 2 (GCN2), an eIF2alpha kinase sensing amino acid levels PMID: 27965097
11. A novel homozygous EIF2AK4 mutation (c.257+4A>C) was identified in 1 of 9 (11.1%) patients diagnosed with HPAH. The novel EIF2AK4 mutation (c.257+4A>C) was homozygous in two sisters with severe pulmonary hypertension. None of the 72 patients with IPAH had biallelic EIF2AK4 mutations. PMID: 28012804
12. A novel homozygous EIF2AK4 mutation (c.257+4A>C) was identified in 1 of 9 (11.1%) patients diagnosed with HPAH. The novel EIF2AK4 mutation (c.257+4A>C) was homozygous in two sisters with severe pulmonary hypertension. None of the 72 patients with IPAH had biallelic EIF2AK4 mutations. PMID: 27884767
13. This is the first reported case of EIF2AK4 mutation in PVOD in a Chinese patient population. We found the frameshift EIF2AK4 mutation c.1392delT (p.Arg465fs) in this case. PMID: 27684876
14. IDO, through GCN2 kinase activation, downregulates the levels of TCRcomplex tchain and cMyc, resulting in the suppression of Tcell proliferation and a reduction in the levels of LDHA and GLS2 PMID: 26647830
15. EIF2AK4 mutation was associated with pulmonary veno-occlusive disease. PVOD patients who were not significantly exposed to trichloroethylene were more likely to harbour EIF2AK4 mutations. PMID: 26541523
16. Data show that sequenced eukaryotic translation initiation factor 2 alpha kinase 4 protein (EIF2AK4) with a homozygous mutation in all five families: c.3344C>T(p.P1115L). PMID: 25512148
17. Targeting ALDH18A1 activated the serine/threonine protein kinase GCN2 (general control nonderepressible 2) to inhibit protein synthesis in melanoma. PMID: 26082174
18. Upon deprivation of various amino acids, activated GCN2 up-regulates ATF4 to induce expression of the stress response protein Sestrin2, which is required to sustain repression of mTORC1 by blocking its lysosomal localization PMID: 26543160
19. IDO through GCN2 kinase activation inhibits CD4(+) T-cell proliferation and down-regulates key enzymes that directly or indirectly promote FA synthesis, a prerequisite for CD4(+) T-cell proliferation and differentiation into effector cell lineages. PMID: 26147366
20. GCN2 can exert its proapoptotic function in cancer cell death by posttranslational mechanisms. PMID: 25589675
21. GCN2 activation and phosphorylation of eIF2alpha in response to mTORC1 inhibition are necessary for autophagy. PMID: 25759478
22. This study is the first to examine the perceptual response to CPET in patients with PVOD who were carriers of EIF2AK4 mutations compared with PAH patients matched for resting haemodynamics and pulmonary function PMID: 25142489
23. p58IPK is a general inhibitor of the eIF2alpha kinases in that it also interacts with GCN2. Thus forced overexpression of cytoplasmic p58 delays eIF2alpha phosphorylation, suppresses GCN2 phosphorylation and prolongs protein synthesis PMID: 25329545
24. REVIEW: roles of GCN2 PMID: 24256275
25. Association of EIF2AKE with body mass index in Chinese has been confirmed and is suggested to be 'ethnic specific'. PMID: 24827717
26. Mutations in EIF2AK4 are likely to cause autosomal-recessive pulmonary capillary hemangiomatosis in familial and some nonfamilial cases. PMID: 24135949
27. EIF2AK4 mutations cause pulmonary veno-occlusive disease. PMID: 24292273
28. Data indicate that suppressing GCN2 and activating transcription factor 4 (ATF4), expression decreased Amino acid deprivation (AAD)-induced VEGF expression. PMID: 23908598
29. GCN2 has a role as an early mediator in the cellular response to HIV-1 infection PMID: 23417324
30. GCN2 leading to inhibition of viral RNA translation, and that HIV-1 protease cleaves GCN2 to overcome its antiviral effect. PMID: 23110064
31. In this review, GCN2 senses the absence of one or more amino acids by virtue of direct binding to cognate tRNAs. PMID: 23216249
32. The activation of autophagy in response to interferon (IFN)-gamma is promoted by tryptophan depletion and relies, at least in part, on the activation of GCN2-eIF2alpha kinase in kidney epithelial cells. PMID: 22896630
33. Changes in translational control of mitochondrial proteins are signaled by the activation of AMPK (AMP-activated protein kinase) and GCN2, leading also to the activation of autophagy. PMID: 22435535
34. The results suggest that GCN2 pathways can mediate the limiting effects of Gln deprivation on protein synthesis according to its severity. PMID: 21113813
35. the GCN2/eIF2alpha/ATF4 pathway is essential for the induction of the TRB3 gene transcription PMID: 21203563
36. Data show that impairment of autophagy stimulates PS1 expression and gamma-secretase activity through GCN2. PMID: 20168091
37. The authors conclude that the GCN2-eIF2alpha-ATF4 pathway is critical for maintaining metabolic homeostasis in tumour cells, making it a novel and attractive target for anti-tumour approaches. PMID: 20473272
38. GCN2 and its downstream target, the transcriptional activator ATF4, is critical for proliferation and survival of tumour cells after starvation for amino acids or glucose and is essential for growth in vivo in a xenograft model. PMID: 20551969
39. MEK functions to enhance GCN2-dependent eIF2alpha phosphorylation rather than suppressing dephosphorylation PMID: 18287093
40. UV-induced eIF2alpha phosphorylation by activation of both PERK and GCN2 via oxidative stress and l-arginine starvation signaling pathways. PMID: 19586904

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HGNC: 19687

OMIM: 234810

KEGG: hsa:440275

STRING: 9606.ENSP00000263791

UniGene: Hs.656673