Target Information
| Target General Information | Top | |||||
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| Target ID |
T03313
(Former ID: TTDR01101)
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| Target Name |
Interleukin 2 receptor alpha (IL2RA)
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| Synonyms |
TAC antigen; Interleukin-2 receptor subunit alpha; IL2-RA; IL-2R subunit alpha; IL-2-RA; IL-2 receptor subunit alpha; IL-2 receptor alpha subunit; CD25 antigen; CD25
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| Gene Name |
IL2RA
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| Target Type |
Successful target
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[1] | ||||
| Disease | [+] 1 Target-related Diseases | + | ||||
| 1 | Transplant rejection [ICD-11: NE84] | |||||
| Function |
The receptor is involved in the regulation of immune tolerance by controlling regulatory T cells (TREGs) activity. TREGs suppress the activation and expansion of autoreactive T-cells. Receptor for interleukin-2.
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| BioChemical Class |
Cytokine receptor
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| UniProt ID | ||||||
| Sequence |
MDSYLLMWGLLTFIMVPGCQAELCDDDPPEIPHATFKAMAYKEGTMLNCECKRGFRRIKS
GSLYMLCTGNSSHSSWDNQCQCTSSATRNTTKQVTPQPEEQKERKTTEMQSPMQPVDQAS LPGHCREPPPWENEATERIYHFVVGQMVYYQCVQGYRALHRGPAESVCKMTHGKTRWTQP QLICTGEMETSQFPGEEKPQASPEGRPESETSCLVTTTDFQIQTEMAATMETSIFTTEYQ VAVAGCVFLLISVLLLSGLTWQRRQRKSRRTI Click to Show/Hide
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| 3D Structure | Click to Show 3D Structure of This Target | PDB | ||||
| HIT2.0 ID | T75F65 | |||||
| Drugs and Modes of Action | Top | |||||
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| Approved Drug(s) | [+] 1 Approved Drugs | + | ||||
| 1 | Basiliximab | Drug Info | Approved | Organ transplant rejection | [2], [3] | |
| Clinical Trial Drug(s) | [+] 5 Clinical Trial Drugs | + | ||||
| 1 | Inolimomab | Drug Info | Phase 3 | Heart transplant rejection | [4] | |
| 2 | LMB-2 | Drug Info | Phase 2 | Chronic lymphocytic leukaemia | [5] | |
| 3 | RFT-5.dgA | Drug Info | Phase 2 | Human immunodeficiency virus infection | [6] | |
| 4 | CHT-25 | Drug Info | Phase 1 | Hodgkin lymphoma | [7] | |
| 5 | RG6292 | Drug Info | Phase 1 | Solid tumour/cancer | [8] | |
| Discontinued Drug(s) | [+] 1 Discontinued Drugs | + | ||||
| 1 | HuMax-TAC | Drug Info | Terminated | Autoimmune diabetes | [9] | |
| Mode of Action | [+] 2 Modes of Action | + | ||||
| Modulator | [+] 5 Modulator drugs | + | ||||
| 1 | Basiliximab | Drug Info | [1] | |||
| 2 | Inolimomab | Drug Info | [10] | |||
| 3 | LMB-2 | Drug Info | [5] | |||
| 4 | RFT-5.dgA | Drug Info | [11] | |||
| 5 | CHT-25 | Drug Info | [7] | |||
| Inhibitor | [+] 1 Inhibitor drugs | + | ||||
| 1 | RG6292 | Drug Info | [12] | |||
| Cell-based Target Expression Variations | Top | |||||
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| Cell-based Target Expression Variations | ||||||
| Different Human System Profiles of Target | Top |
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Human Similarity Proteins
of target is determined by comparing the sequence similarity of all human proteins with the target based on BLAST. The similarity proteins for a target are defined as the proteins with E-value < 0.005 and outside the protein families of the target.
A target that has fewer human similarity proteins outside its family is commonly regarded to possess a greater capacity to avoid undesired interactions and thus increase the possibility of finding successful drugs
(Brief Bioinform, 21: 649-662, 2020).
Human Pathway Affiliation
of target is determined by the life-essential pathways provided on KEGG database. The target-affiliated pathways were defined based on the following two criteria (a) the pathways of the studied target should be life-essential for both healthy individuals and patients, and (b) the studied target should occupy an upstream position in the pathways and therefore had the ability to regulate biological function.
Targets involved in a fewer pathways have greater likelihood to be successfully developed, while those associated with more human pathways increase the chance of undesirable interferences with other human processes
(Pharmacol Rev, 58: 259-279, 2006).
Biological Network Descriptors
of target is determined based on a human protein-protein interactions (PPI) network consisting of 9,309 proteins and 52,713 PPIs, which were with a high confidence score of ≥ 0.95 collected from STRING database.
The network properties of targets based on protein-protein interactions (PPIs) have been widely adopted for the assessment of target’s druggability. Proteins with high node degree tend to have a high impact on network function through multiple interactions, while proteins with high betweenness centrality are regarded to be central for communication in interaction networks and regulate the flow of signaling information
(Front Pharmacol, 9, 1245, 2018;
Curr Opin Struct Biol. 44:134-142, 2017).
Human Similarity Proteins
Human Pathway Affiliation
Biological Network Descriptors
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There is no similarity protein (E value < 0.005) for this target
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| KEGG Pathway | Pathway ID | Affiliated Target | Pathway Map |
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| Cytokine-cytokine receptor interaction | hsa04060 | Affiliated Target |
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| Class: Environmental Information Processing => Signaling molecules and interaction | Pathway Hierarchy | ||
| Viral protein interaction with cytokine and cytokine receptor | hsa04061 | Affiliated Target |
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| Class: Environmental Information Processing => Signaling molecules and interaction | Pathway Hierarchy | ||
| Endocytosis | hsa04144 | Affiliated Target |
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| Class: Cellular Processes => Transport and catabolism | Pathway Hierarchy | ||
| PI3K-Akt signaling pathway | hsa04151 | Affiliated Target |
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| Class: Environmental Information Processing => Signal transduction | Pathway Hierarchy | ||
| JAK-STAT signaling pathway | hsa04630 | Affiliated Target |
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| Class: Environmental Information Processing => Signal transduction | Pathway Hierarchy | ||
| Hematopoietic cell lineage | hsa04640 | Affiliated Target |
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| Class: Organismal Systems => Immune system | Pathway Hierarchy | ||
| Th1 and Th2 cell differentiation | hsa04658 | Affiliated Target |
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| Class: Organismal Systems => Immune system | Pathway Hierarchy | ||
| Th17 cell differentiation | hsa04659 | Affiliated Target |
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| Class: Organismal Systems => Immune system | Pathway Hierarchy | ||
| Click to Show/Hide the Information of Affiliated Human Pathways | |||
| Degree | 15 | Degree centrality | 1.61E-03 | Betweenness centrality | 4.38E-05 |
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| Closeness centrality | 2.33E-01 | Radiality | 1.41E+01 | Clustering coefficient | 5.05E-01 |
| Neighborhood connectivity | 5.29E+01 | Topological coefficient | 1.46E-01 | Eccentricity | 12 |
| Download | Click to Download the Full PPI Network of This Target | ||||
| Target Regulators | Top | |||||
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| Target-regulating Transcription Factors | ||||||
| Target Profiles in Patients | Top | |||||
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| Target Expression Profile (TEP) | ||||||
| Target-Related Models and Studies | Top | |||||
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| Target Validation | ||||||
| References | Top | |||||
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| REF 1 | Drugs@FDA. U.S. Food and Drug Administration. U.S. Department of Health & Human Services. | |||||
| REF 2 | URL: http://www.guidetopharmacology.org Nucleic Acids Res. 2015 Oct 12. pii: gkv1037. The IUPHAR/BPS Guide to PHARMACOLOGY in 2016: towards curated quantitative interactions between 1300 protein targets and 6000 ligands. (Ligand id: 6879). | |||||
| REF 3 | Natural products as sources of new drugs over the last 25 years. J Nat Prod. 2007 Mar;70(3):461-77. | |||||
| REF 4 | New developments in immunosuppressive therapy for heart transplantation. Expert Opin Emerg Drugs. 2009 Mar;14(1):1-21. | |||||
| REF 5 | Phase I trial of recombinant immunotoxin anti-Tac(Fv)-PE38 (LMB-2) in patients with hematologic malignancies. J Clin Oncol. 2000 Apr;18(8):1622-36. | |||||
| REF 6 | ClinicalTrials.gov (NCT00667017) RFT5-dgA Immunotoxin in Treating Patients With Relapsed or Refractory Cutaneous T-Cell Non-Hodgkin Lymphoma. U.S. National Institutes of Health. | |||||
| REF 7 | A Phase I Clinical Trial of CHT-25 a 131I-Labeled Chimeric Anti-CD25 Antibody Showing Efficacy in Patients with Refractory Lymphoma. Clin Cancer Res. 2009 Dec 15;15(24):7701-7710. | |||||
| REF 8 | ClinicalTrials.gov (NCT04158583) A Study to Evaluate the Safety and Tolerability of RO7296682 in Participants With Advanced Solid Tumors.. U.S. National Institutes of Health. | |||||
| REF 9 | Trusted, scientifically sound profiles of drug programs, clinical trials, safety reports, and company deals, written by scientists. Springer. 2015. Adis Insight (drug id 800018175) | |||||
| REF 10 | Encouraging results with inolimomab (anti-IL-2 receptor) as treatment for refractory acute graft-versus-host disease.Biol Blood Marrow Transplant.2006 Nov;12(11):1135-41. | |||||
| REF 11 | Clinical evaluation of ricin A-chain immunotoxins in patients with Hodgkin's lymphoma. Ann Oncol. 2003 May;14(5):729-36. | |||||
| REF 12 | Clinical pipeline report, company report or official report of Roche. | |||||
| REF 13 | Biosynthesis, synthesis, and biological activities of pyrrolobenzodiazepines. Med Res Rev. 2012 Mar;32(2):254-93. | |||||
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