Tryptophan
Tryptophan is an essential amino acid, meaning it must be obtained from the diet because humans cannot synthesize it in sufficient amounts.
Tryptophan is an essential amino acid, meaning it must be obtained from the diet because humans cannot synthesize it in sufficient amounts. Beyond its role as a proteinogenic amino acid, tryptophan is biologically important because it serves as a precursor for multiple bioactive compounds, including Metabolites generated through host and microbial pathways. These pathways include conversion to kynurenine-related Metabolites and indole derivatives, which are increasingly recognized as relevant to immune regulation, gut physiology, and systemic metabolism.
In biomedical research, tryptophan is often studied in relation to cancer metabolism, gut microbiota function, endocrine signaling, and nutritional interventions. Recent studies have also examined its behavior in food systems, oxidative stress, and biotechnological production. Because tryptophan participates in diverse metabolic networks, changes in its abundance or utilization can reflect altered cellular metabolism in diseases such as ovarian cancer, cervical cancer, metabolic dysfunction–associated steatotic liver disease, osteoporosis, and cardiometabolic risk states.
Where the papers sit
9 papers from the last 6 months study tryptophan directly · updated from PubMed 3 Nov 2026
Study type 1 clinical trial · 1 human data · 5 preclinical · 2 unclassified
Themes one subject
Those 9 are all about one subject.
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Tryptophan Biology and Biotechnology
Tryptophan metabolism, oxidation, and protein engineering are being studied across diagnostics, cancer therapy, diet, and microbial biology. Recurring applications include plasma metabolite profiling in hepatic encephalopathy, microbiome-linked cardiometabolic risk, and immune or anti-VEGF cancer strategies. Other work focuses on controlling tryptophan oxidation and hydroxylase or protein stability through molecular design. The cluster shares tryptophan-centered biology but shows no single field-wide direction or agreed clinical endpoint.
Papers
The 9 papers from the last 6 months that study tryptophan directly, newest first, by theme and by study type. Study types come from PubMed publication types and MeSH headings.
By theme
Tryptophan Biology and Biotechnology (9)
- Dynamic Changes and Diagnostic Value of Plasma Tryptophan and Its Metabolites in Different Stages of Hepatic Encephalopathy Detected by Ultra-Performance Liquid Chromatography-Tandem Mass Spectrometry. Biomedical chromatography : BMC · 5 Oct 2026 PMID 42833704
- Iron-dependent metabolic rewiring drives tryptophan-associated melanin production in a clinical Pseudomonas aeruginosa strain. mSystems · 5 Oct 2026 PMID 42831639
- An enzyme-responsive nanoplatform rewires host-microbe tryptophan metabolism for cancer immunotherapy. Cell host & microbe · 30 Sept 2026 PMID 42815473
- EvoMut: A computational framework for engineering oxidative stability in proteins. Protein science : a publication of the Protein Society · 15 Sept 2026 PMID 42741978
- Local electrostatics governs tryptophan oxidation and enables rational stability engineering in antibodies. mAbs · 13 Aug 2026 PMID 42590841
- Phenylalanine- and tryptophan-based hydrazone hybrids targeting the VEGF axis and caspase-mediated apoptosis: Design, synthesis, and biological evaluation. Bioorganic chemistry · 6 Aug 2026 PMID 42561562
- Path dependence theory-inspired rational design of toad tryptophan hydroxylase 1 via engineering of non-active substrate binding pockets. International journal of biological macromolecules · 6 Jun 2026 PMID 42250708
- Increasing plant protein sources in the diet modulates gut microbiota and tryptophan metabolism in men at cardiometabolic risk. Gut microbes · 27 May 2026 PMID 42199008
- Uncovering metabolic reprogramming in ovarian and cervical cancers with multi-omics. iScience · 11 May 2026 PMID 42109858
By study type
Clinical trials (1)
- Increasing plant protein sources in the diet modulates gut microbiota and tryptophan metabolism in men at cardiometabolic risk. Gut microbes · 27 May 2026 PMID 42199008
Human data, design not indexed (1)
- Local electrostatics governs tryptophan oxidation and enables rational stability engineering in antibodies. mAbs · 13 Aug 2026 PMID 42590841
Preclinical: animal, cell and lab studies (5)
- Dynamic Changes and Diagnostic Value of Plasma Tryptophan and Its Metabolites in Different Stages of Hepatic Encephalopathy Detected by Ultra-Performance Liquid Chromatography-Tandem Mass Spectrometry. Biomedical chromatography : BMC · 5 Oct 2026 PMID 42833704
- An enzyme-responsive nanoplatform rewires host-microbe tryptophan metabolism for cancer immunotherapy. Cell host & microbe · 30 Sept 2026 PMID 42815473
- EvoMut: A computational framework for engineering oxidative stability in proteins. Protein science : a publication of the Protein Society · 15 Sept 2026 PMID 42741978
- Phenylalanine- and tryptophan-based hydrazone hybrids targeting the VEGF axis and caspase-mediated apoptosis: Design, synthesis, and biological evaluation. Bioorganic chemistry · 6 Aug 2026 PMID 42561562
- Path dependence theory-inspired rational design of toad tryptophan hydroxylase 1 via engineering of non-active substrate binding pockets. International journal of biological macromolecules · 6 Jun 2026 PMID 42250708
Unclassified: not yet indexed with MeSH (2)
- Iron-dependent metabolic rewiring drives tryptophan-associated melanin production in a clinical Pseudomonas aeruginosa strain. mSystems · 5 Oct 2026 PMID 42831639
- Uncovering metabolic reprogramming in ovarian and cervical cancers with multi-omics. iScience · 11 May 2026 PMID 42109858
Written from 9 PubMed abstracts, each one listed by PMID above. Published: 2026-06-20. Last written: 2026-07-13 by GPT. Drafted by language models from published abstracts; not medical advice.