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Kynurenine Pathway of Tryptophan Metabolism: Regulatory and Functional Aspects
Open accessAbstract
Regulatory and functional aspects of the kynurenine (K) pathway (KP) of tryptophan (Trp) degradation are reviewed. The KP accounts for ~95% of dietary Trp degradation, of which 90% is attributed to the hepatic KP. During immune activation, the minor extrahepatic KP plays a more active role. The KP is rate-limited by its first enzyme, Trp 2,3-dioxygenase (TDO), in liver and indoleamine 2,3-dioxygenase (IDO) elsewhere. TDO is regulated by glucocorticoid induction, substrate activation and stabilization by Trp, cofactor activation by heme, and end-product inhibition by reduced nicotinamide adenine dinucleotide (phosphate). IDO is regulated by IFN-γ and other cytokines and by nitric oxide. The KP disposes of excess Trp, controls hepatic heme synthesis and Trp availability for cerebral serotonin synthesis, and produces immunoregulatory and neuroactive metabolites, the B 3 “vitamin” nicotinic acid, and oxidized nicotinamide adenine dinucleotide. Various KP enzymes are undermined in disease and are targeted for therapy of conditions ranging from immunological, neurological, and neurodegenerative conditions to cancer.
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“The Trp-Kyn-AhR pathway, in which the essential amino acid tryptophan is converted to Kyn and other secondary metabolites, is the primary route of tryptophan catabolism (19).”
From Reimagining IDO Pathway Inhibition in Cancer Immunotherapy via Downstream Focus on the Tryptophan–Kynurenine–Aryl Hydrocarbon Axis (2019) · cites this paper as [19]
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Prevention of Allogeneic Fetal Rejection by Tryptophan Catabolism
Munn, D. H., Zhou, M., Attwood, J. T., Bondarev, I. E., Conway, S. J., Marshall, B., Brown, C. C., & Mellor, A. L. (1998) · Science · doi:10.1126/science.281.5380.1191 · Cited by 2,589
An endogenous tumour-promoting ligand of the human aryl hydrocarbon receptor
Opitz, C. A., Litzenburger, U. M., Sahm, F., Ott, M., Tritschler, I., Trump, S., Schumacher, T., Jestaedt, L., Schrenk, D., Weller, M., et al. (2011) · Nature · doi:10.1038/nature10491 · Cited by 1,898
An Interaction between Kynurenine and the Aryl Hydrocarbon Receptor Can Generate Regulatory T Cells
Mezrich, J. D., Fechner, J. H., Zhang, X., Johnson, B. P., Burlingham, W. J., & Bradfield, C. A. (2010) · The Journal of Immunology · doi:10.4049/jimmunol.0903670 · Cited by 1,674
Relationship between interferon‐γ, indoleamine 2,3‐dioxygenase, and tryptophan catabolism
Taylor, M. W., & Feng, G. (1991) · The FASEB Journal · doi:10.1096/fasebj.5.11.1907934 · Cited by 1,060
Neuropharmacology of quinolinic and kynurenic acids.
Stone, T. W. (1993) · Pharmacological Reviews · doi:10.1016/s0031-6997(25)00441-7 · Cited by 949
Role of Poly(ADP-ribose) Polymerase (PARP) Cleavage in Apoptosis
Boulares, A. H., Yakovlev, A. G., Ivanova, V. S., Stoica, B. A., Wang, G., Iyer, S., & Smulson, M. E. (1999) · Journal of Biological Chemistry · doi:10.1074/jbc.274.33.22932 · Cited by 898
Tryptophan and the immune response
Moffett, J., & Namboodiri, M. (2003) · Immunology and Cell Biology · doi:10.1046/j.1440-1711.2003.t01-1-01177.x · Cited by 765
Chausmer, A. B. (1998) · Journal of the American College of Nutrition · doi:10.1080/07315724.1998.10718735 · Cited by 734
Tryptophan Catabolism in Cancer: Beyond IDO and Tryptophan Depletion
Platten, M., Wick, W., & den Eynde, B. J. V. (2012) · Cancer Research · doi:10.1158/0008-5472.can-12-0569 · Cited by 725
Nguyen, N. T., Kimura, A., Nakahama, T., Chinen, I., Masuda, K., Nohara, K., Fujii‐Kuriyama, Y., & Kishimoto, T. (2010) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1014465107 · Cited by 705
Research works printed but not linked: 13
- Verjee ZHM, 1975, Acta Vitaminol Enzymol (Milano), 29, 198
- Shibata K, 1986, Agr Biol Chem, 50, 3037
- Murakami Y, 2013, Int J Tryptophan Res, 6, 47
- Nakamura T, 1987, J Biol Chem, 262, 723
- Yamamoto M, 1982, Biochem Int, 5, 747
- Carlson MG, 1993, J Clin Endocrinol Metab, 77, 11
- Chiancone FM, 1964, Ital J Biochem, 13, 1
- Badawy AA-B, 1983, Alcohol Alcohol, 18, 369
- Chouinard G, 1978, Commun Psychopharmacol, 2, 21
- Oxenkrug G, 2016, Ann Psychiatry Ment Health, 4
- Ikeda S, 1986, Ital J Biochem, 35, 232
- Fukuwatari T, 2013, Int J Tryptophan Res, 6, 3
- Zhang LQ, 2011, J Bioanal Biomed, 7, 13
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Brewitz, L., Tumber, A., Zhang, X., & Schofield, C. J. (2020) · Bioorganic & Medicinal Chemistry · doi:10.1016/j.bmc.2020.115675 · Cited by 17
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Naseri-Nosar, P., Nogalski, M. T., & Shenk, T. E. (2021) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.2026336118 · Cited by 16
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Soveid, N., Barkhidarian, B., Samadi, M., Hatami, M., Gholami, F., Yekaninejad, M. S., Saedisomeolia, A., Karbasian, M., Siadat, S. D., & Mirzaei, K. (2024) · BMC Microbiology · doi:10.1186/s12866-024-03534-8 · Cited by 16
Choe, K., Ali, M., Lardenoije, R., Riemens, R. J. M., Pishva, E., Bickel, H., Weyerer, S. B., Hoffmann, P., Pentzek, M., Riedel-Heller, S. G., et al. (2024) · Alzheimer s Research & Therapy · doi:10.1186/s13195-024-01623-4 · Cited by 15
Koliamitra, C., Javelle, F., Joisten, N., Shimabukuro‐Vornhagen, A., Bloch, W., Schenk, A., & Zimmer, P. (2019) · PubMed Central · Cited by 15
Kumar, M. P., Mamidala, E., Al‐Ghanim, K. A., Al-Misned, F. A., & Mahboob, S. (2019) · Saudi Journal of Biological Sciences · doi:10.1016/j.sjbs.2019.12.007 · Cited by 15
Bonezi, V., Cataneo, A. H. D., Branquinho, M. S. F., Silva, M. B. B., Gonzalez‐Dias, P., Pereira, S. S., Ferreira, L. C. D. S., Nakaya, H. I., Čampa, A., Wowk, P. F., et al. (2020) · Frontiers in Immunology · doi:10.3389/fimmu.2020.00020 · Cited by 16
Gurczynski, S. J., Pereira, N. L., Hrycaj, S., Wilke, C. A., Zemans, R. L., & Moore, B. B. (2021) · JCI Insight · doi:10.1172/jci.insight.139965 · Cited by 15
The Kynurenine Pathway Metabolites in Cord Blood Positively Correlate With Early Childhood Adiposity
Tan, K. M. L., Tint, M. T., Narasimhan, K., Michael, N., Sadananthan, S. A., Velan, S. S., Fortier, M. V., Yap, F. K. P., Tan, K. H., Gluckman, P. D., et al. (2022) · The Journal of Clinical Endocrinology & Metabolism · doi:10.1210/clinem/dgac078 · Cited by 15
Sun, L., Wang, J., Wang, Q., He, Z., Sun, T., Yao, Y., Wang, W., & Shen, P. (2022) · Biochemical Pharmacology · doi:10.1016/j.bcp.2022.115007 · Cited by 15
Clanchy, F. I. L., Huang, Y., Ogbechi, J., Darlington, L. G., Williams, R. O., & Stone, T. W. (2022) · Frontiers in Immunology · doi:10.3389/fimmu.2022.832989 · Cited by 15
Further characterization of tryptophan metabolism and its dysregulation in fibroids
Chuang, T., Quintanilla, D., Boos, D., & Khorram, O. (2022) · F&S Science · doi:10.1016/j.xfss.2022.04.005 · Cited by 15
Sorgdrager, F. J. H., Buning, J. W., Bos, E. H., van Beek, A. P., & Kema, I. P. (2018) · The Journal of Clinical Endocrinology & Metabolism · doi:10.1210/jc.2018-00582 · Cited by 15
Tryptophan metabolism is differently regulated between large and small dogs
Hoffman, J. M., Kiklevich, J. V., Austad, M., Tran, V., Jones, D. P., Royal, A. B., Henry, C. J., & Austad, S. N. (2019) · GeroScience · doi:10.1007/s11357-019-00114-x · Cited by 15
Chiu, M., Taurino, G., Bianchi, M. G., & Bussolati, O. (2021) · Frontiers in Cell and Developmental Biology · doi:10.3389/fcell.2021.714755 · Cited by 15
Fedoroff, M. Y., Zhao, L., Wang, S., Zanjani, L. S., Bhushan, A., Yang, H., Bussard, K. M., Peiper, S. C., & He, J. (2025) · Journal of Experimental & Clinical Cancer Research · doi:10.1186/s13046-025-03446-z · Cited by 14
Schmidt, M. A., Jones, J. A., & Mason, C. E. (2023) · Cambridge Prisms Precision Medicine · doi:10.1017/pcm.2023.16 · Cited by 17
Alaya, A., Mihok, E. A., Pecsenye, B., Jolji, M., Kertész, A., Bársony, P., Vígh, S., Cziáky, Z., Máthé, A. B., BURTESCU, R. F., et al. (2023) · Antioxidants · doi:10.3390/antiox12091717 · Cited by 14
Kupjetz, M., Chirino, T. Y. W., Joisten, N., & Zimmer, P. (2024) · Brain Research · doi:10.1016/j.brainres.2024.149415 · Cited by 14
Gagliardi, F., Domenico, P. D., Snider, S., Roncelli, F., Comai, S., & Mortini, P. (2025) · Critical Reviews in Oncology/Hematology · doi:10.1016/j.critrevonc.2025.104657 · Cited by 14
Early detection of feline chronic kidney disease via 3-hydroxykynurenine and machine learning
Broecke, E. V., Mulders, L. V., Paepe, E. D., Paepe, D., Daminet, S., & Vanhaecke, L. (2025) · Scientific Reports · doi:10.1038/s41598-025-90019-x · Cited by 14
Kynurenines and Mitochondrial Disturbances in Multiple Sclerosis
Pukoli, D., & Vécsei, L. (2025) · International Journal of Molecular Sciences · doi:10.3390/ijms26115098 · Cited by 17
Deen, C. P. J., van der Veen, A., van Faassen, M. H. J. R., Minović, I., Neto, A. W. G., Geleijnse, J. M., den Berg, K. J. B., Kema, I. P., & Bakker, S. J. L. (2019) · Journal of Clinical Medicine · doi:10.3390/jcm8111948 · Cited by 14
Mirgaux, M., Leherte, L., & Wouters, J. (2020) · Acta Crystallographica Section D Structural Biology · doi:10.1107/s2059798320013510 · Cited by 15
Sağlam, E., Bi̇lgi̇ç, A., Abuşoğlu, S., Ünlü, A., & Sivrikaya, A. (2021) · Psychiatry Research · doi:10.1016/j.psychres.2021.113770 · Cited by 14
Mock-Ohnesorge, J., Möck, A., Hackert, T., Fröhling, S., Schenz, J., Poschet, G., Jäger, D., Büchler, M. W., Uhle, F., & Weigand, M. A. (2021) · Oncotarget · doi:10.18632/oncotarget.27956 · Cited by 14
Metadata
- Authors
- Badawy, A. A.-B.
- Affiliations
- Cardiff Metropolitan University (GB)
- Corresponding author
- Badawy, Abdulla A-B
- ORCID
- Badawy, Abdulla A-B
- Venue
- International Journal of Tryptophan Research
- Publisher
- SAGE Publications
- Published
- 2017-01-01
- Volume
- 10
- Pages
- 1178646917691938-1178646917691938
- ISSN
- 1178-6469 (ISSN-L)
- PMC
- PMC5398323
- OpenAlex
- W2598111690
- Cited by
- 1,158
- References
- 203
- Citations by year
- 2026: 147 · 2025: 179 · 2024: 137 · 2023: 153 · 2022: 148 · 2021: 148 · 2020: 119 · 2019: 75 · 2018: 45 · 2017: 7
- FWCI
- 4.59
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- International Journal of Tryptophan Research (publishedVersion, cc-by-nc)
- PubMed Central (publishedVersion, cc-by-nc)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Topics
- Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Amino Acid Enzymes and Metabolism
- Life Sciences › Immunology and Microbiology › Applied Microbiology and Biotechnology › Microbial Natural Products and Biosynthesis
- Keywords
- kynurenine pathway, tryptophan metabolism, tryptophan 2,3-dioxygenase, indoleamine 2,3-dioxygenase, glucocorticoid regulation, nitric oxide, NADP+ inhibition, heme biosynthesis, serotonin synthesis, NAD+, immune regulation, neuroactive metabolites, neurodegenerative diseases, cancer therapy
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