Article
Chemistry, Multidisciplinary
Nirmalya Pradhan, Nasim Akhtar, Barnali Nath, Jorge Pena-Garcia, Anjali Gupta, Horacio Perez-Sanchez, Sachin Kumar, Debasis Manna
Summary: Quinine derivatives effectively inhibit the activity of IDO1 by competing with heme, providing a potential avenue for immunotherapy-based drug discovery strategies.
CHEMICAL COMMUNICATIONS
(2021)
Review
Oncology
Yu Yao, Heng Liang, Xin Fang, Shengnan Zhang, Zikang Xing, Lei Shi, Chunxiang Kuang, Barbara Seliger, Qing Yang
Summary: IDO1, a heme-containing enzyme, plays a crucial role in the kynurenine pathway of tryptophan metabolism, with implications in immunity and neuronal function. Despite potential applications in cancer and neurodegenerative diseases, cautionary notes from clinical trials indicate a need for better understanding of IDO1 inhibition mechanisms.
JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH
(2021)
Article
Biochemistry & Molecular Biology
Hui Phing Ang, Suzana Makpol, Muhammad Luqman Nasaruddin, Nurul Saadah Ahmad, Jen Kit Tan, Wan Asyraf Wan Zaidi, Hashim Embong
Summary: This study examined the role of IDO and TRP-KP in lipopolysaccharide-induced delirium in a chronic cerebral hypoperfusion model. The results showed that LPS treatment led to behavior deficits and increased IDO expression, suggesting a potential therapeutic target for delirium.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Genetics & Heredity
Hye-Rim Kim, Hyun-Seok Jin, Yong-Bin Eom
Summary: This study identified several loci associated with IDO activity through mGWAS and discovered new genes related to both CKD and eGFR. Most of these rare variants appeared specifically in an Asian geographic region, providing insights into the genetic link between IDO activity and CKD.
Article
Biochemistry & Molecular Biology
Yuhua Zhang, Xingchen Zhao, Cuili Li, Yan Yang, Luan Li, Yingwen Chen, Qingying Shi, Zhilian Li, Yanhua Wu, Li Zhang, Ruizhao Li, Meijun Si, Xinling Liang, Yuanhan Chen
Summary: In this study, the NAD synthetic flux and levels in podocytes under diabetic conditions were investigated, and the effects of IDO overexpression on NAD synthesis and podocyte injury were studied. The findings revealed aberrant NAD synthetic flux and downregulated IDO levels in diabetic podocytes. Overexpression of IDO promoted de novo NAD synthesis, reduced NAD-bypass metabolic enzyme, increased NAD content, and alleviated podocyte injury markers under diabetic conditions.
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
(2023)
Article
Biochemistry & Molecular Biology
Camilla Gronkjaer Jensen, Michael Schou Jensen, Stine Julie Tingskov, Peter Olinga, Rikke Norregaard, Henricus A. M. Mutsaers
Summary: Chronic kidney disease is a major global health concern, with renal fibrosis playing a key role in disease progression. Antagonizing indoleamine 2,3-dioxygenase (IDO) can effectively reduce fibrogenesis in CKD patients.
Review
Neurosciences
Karl Savonije, Autumn Meek, Donald E. F. Weaver
Summary: Neuroimmune-triggered neuroinflammation is an important factor for various neurological disorders, and targeting the kynurenine pathway and inhibiting indoleamine-2,3-dioxygenase (IDO-1) may be a viable approach to treat conditions like depression and dementia.
Article
Geriatrics & Gerontology
Binbin Pan, Hao Zhang, Yali Hong, Mengqing Ma, Xin Wan, Changchun Cao
Summary: This study revealed that IDO knockout mice exhibited better kidney function and less kidney fibrosis in an acute kidney injury (AKI) model. Additionally, PGE2 treatment was found to alleviate kidney fibrosis by inhibiting IDO expression.
Article
Biochemistry & Molecular Biology
Theodoros Eleftheriadis, Georgios Pissas, Georgios Filippidis, Vassilios Liakopoulos, Ioannis Stefanidis
Summary: The study showed that IDO plays a crucial role in cellular senescence during anoxia and reoxygenation, affecting the GCN2K and AhR pathways. Cellular senescence influences the outcome of AKI, highlighting the importance of investigating the role of IDO in cellular senescence and the potential therapeutic effects of IDO inhibitors.
Review
Biochemistry & Molecular Biology
Leila Sawada, Antonio Carlos Rosario Vallinoto, Igor Brasil-Costa
Summary: EBV is an oncovirus associated with various types of cancer, with the reason for cancer development in only some infected individuals still unknown. EBV-associated cancers are more aggressive and resistant to treatment compared to EBV-negative cancers, making monoclonal antibodies targeting immune checkpoints a potential therapy.
Article
Immunology
Sameh Souissi, Randa Ghedira, Yosra Macherki, Ahlem Ben-Haj-Ayed, Sallouha Gabbouj, Yasmine Remadi, Imen Sfar, Zohra Chadli, Karim Aouam, Mohsen Hassine, Noureddine Bouaouina, Abdelfattah Zakhama, Elham Hassen
Summary: This study found that IDO1 mRNA expression was significantly upregulated and IDO2 mRNA expression was significantly downregulated in peripheral blood of NPC patients. Additionally, plasma Kyn levels and Kyn/Trp ratio were significantly higher in patients compared to controls. The plasma Kyn/Trp ratio at diagnosis was associated with cancer stage and predicted survival outcome.
IMMUNITY INFLAMMATION AND DISEASE
(2022)
Review
Physiology
Corina Bello, Paul Philipp Heinisch, Maks Mihalj, Thierry Carrel, Markus M. Luedi
Summary: IDO is a rate-limiting enzyme in the tryptophan catabolism pathway, playing a crucial role in immune modulation and the pathogenesis of various diseases. Its involvement has been extensively studied in autoimmune processes and highly malignant cancers, with potential as a predictive biomarker and therapeutic target in immune-mediated diseases. Additionally, IDO shows promise as a biomarker in the pre-operative setting for decision-making and treatment of surgical patients experiencing trauma-induced stress.
FRONTIERS IN PHYSIOLOGY
(2021)
Review
Chemistry, Medicinal
Rahul Singh, Deepak B. Salunke
Summary: IDO1 enzyme catalyzes the initial step of kynurenine pathway and is implicated in immune modulation, antioxidation, and cancer progression. Overexpression of IDO1 plays a pivotal role in immune evasion and cancer development. Research and development of IDO1 inhibitors holds significant potential in immunotherapy and disease treatment.
EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY
(2021)
Review
Pharmacology & Pharmacy
Ana Dolsak, Stanislav Gobec, Matej Sova
Summary: This review discusses the key step of tryptophan metabolism and the importance of relevant enzymes in pathological conditions. In recent years, many inhibitors targeting these enzymes have been developed, and these inhibitors have entered clinical trials.
PHARMACOLOGY & THERAPEUTICS
(2021)
Article
Engineering, Biomedical
Yixuan Guo, Yu Liu, Wei Wu, Daishun Ling, Qiao Zhang, Peng Zhao, Xi Hu
Summary: This article will discuss different types of IDO inhibitors and relevant clinical trials, especially feasible combined therapeutic modalities. In addition, it will also review cutting-edge nanomedicines that combine IDO inhibitors with other therapeutic modalities to effectively enhance the effectiveness of cancer therapy. Finally, the prospects of IDO inhibitors in clinical application and potential breakthroughs will be briefly discussed.