Functional and Structural Studies of AKR1B15 and AKR1B16: Two Novel Additions to Human and Mouse Aldo-Keto Reductase Superfamily
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Characterization of a Microsomal Retinol Dehydrogenase Gene from Amphioxus: Retinoid Metabolism Before Vertebrates
Chemico-Biological Interactions 130–132 (2001) 359–370 www.elsevier.com/locate/chembiont Characterization of a microsomal retinol dehydrogenase gene from amphioxus: retinoid metabolism before vertebrates Diana Dalfo´, Cristian Can˜estro, Ricard Albalat, Roser Gonza`lez-Duarte * Departament de Gene`tica, Facultat de Biologia, Uni6ersitat de Barcelona, A6. Diagonal, 645, E-08028, Barcelona, Spain Abstract Amphioxus, a member of the subphylum Cephalochordata, is thought to be the closest living relative to vertebrates. Although these animals have a vertebrate-like response to retinoic acid, the pathway of retinoid metabolism remains unknown. Two different enzyme systems — the short chain dehydrogenase/reductases and the cytosolic medium-chain alcohol dehydrogenases (ADHs) — have been postulated in vertebrates. Nevertheless, recent data show that the vertebrate-ADH1 and ADH4 retinol-active forms originated after the divergence of cephalochordates and vertebrates. Moreover, no data has been gathered in support of medium-chain retinol active forms in amphioxus. Then, if the cytosolic ADH system is absent and these animals use retinol, the microsomal retinol dehydrogenases could be involved in retinol oxidation. We have identified the genomic region and cDNA of an amphioxus Rdh gene as a preliminary step for functional characterization. Besides, phyloge- netic analysis supports the ancestral position of amphioxus Rdh in relation to the vertebrate forms. © 2001 Elsevier Science Ireland Ltd. All rights reserved. Keywords: Retinol dehydrogenase; Retinoid metabolism; Amphioxus * Corresponding author. Fax: +34-93-4110969. E-mail address: [email protected] (R. Gonza`lez-Duarte). 0009-2797/01/$ - see front matter © 2001 Elsevier Science Ireland Ltd. All rights reserved. PII: S0009-2797(00)00261-1 360 D. -
Upregulation of Peroxisome Proliferator-Activated Receptor-Α And
Upregulation of peroxisome proliferator-activated receptor-α and the lipid metabolism pathway promotes carcinogenesis of ampullary cancer Chih-Yang Wang, Ying-Jui Chao, Yi-Ling Chen, Tzu-Wen Wang, Nam Nhut Phan, Hui-Ping Hsu, Yan-Shen Shan, Ming-Derg Lai 1 Supplementary Table 1. Demographics and clinical outcomes of five patients with ampullary cancer Time of Tumor Time to Age Differentia survival/ Sex Staging size Morphology Recurrence recurrence Condition (years) tion expired (cm) (months) (months) T2N0, 51 F 211 Polypoid Unknown No -- Survived 193 stage Ib T2N0, 2.41.5 58 F Mixed Good Yes 14 Expired 17 stage Ib 0.6 T3N0, 4.53.5 68 M Polypoid Good No -- Survived 162 stage IIA 1.2 T3N0, 66 M 110.8 Ulcerative Good Yes 64 Expired 227 stage IIA T3N0, 60 M 21.81 Mixed Moderate Yes 5.6 Expired 16.7 stage IIA 2 Supplementary Table 2. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis of an ampullary cancer microarray using the Database for Annotation, Visualization and Integrated Discovery (DAVID). This table contains only pathways with p values that ranged 0.0001~0.05. KEGG Pathway p value Genes Pentose and 1.50E-04 UGT1A6, CRYL1, UGT1A8, AKR1B1, UGT2B11, UGT2A3, glucuronate UGT2B10, UGT2B7, XYLB interconversions Drug metabolism 1.63E-04 CYP3A4, XDH, UGT1A6, CYP3A5, CES2, CYP3A7, UGT1A8, NAT2, UGT2B11, DPYD, UGT2A3, UGT2B10, UGT2B7 Maturity-onset 2.43E-04 HNF1A, HNF4A, SLC2A2, PKLR, NEUROD1, HNF4G, diabetes of the PDX1, NR5A2, NKX2-2 young Starch and sucrose 6.03E-04 GBA3, UGT1A6, G6PC, UGT1A8, ENPP3, MGAM, SI, metabolism -
Adaptive Laboratory Evolution Enhances Methanol Tolerance and Conversion in Engineered Corynebacterium Glutamicum
ARTICLE https://doi.org/10.1038/s42003-020-0954-9 OPEN Adaptive laboratory evolution enhances methanol tolerance and conversion in engineered Corynebacterium glutamicum Yu Wang 1, Liwen Fan1,2, Philibert Tuyishime1, Jiao Liu1, Kun Zhang1,3, Ning Gao1,3, Zhihui Zhang1,3, ✉ ✉ 1234567890():,; Xiaomeng Ni1, Jinhui Feng1, Qianqian Yuan1, Hongwu Ma1, Ping Zheng1,2,3 , Jibin Sun1,3 & Yanhe Ma1 Synthetic methylotrophy has recently been intensively studied to achieve methanol-based biomanufacturing of fuels and chemicals. However, attempts to engineer platform micro- organisms to utilize methanol mainly focus on enzyme and pathway engineering. Herein, we enhanced methanol bioconversion of synthetic methylotrophs by improving cellular tolerance to methanol. A previously engineered methanol-dependent Corynebacterium glutamicum is subjected to adaptive laboratory evolution with elevated methanol content. Unexpectedly, the evolved strain not only tolerates higher concentrations of methanol but also shows improved growth and methanol utilization. Transcriptome analysis suggests increased methanol con- centrations rebalance methylotrophic metabolism by down-regulating glycolysis and up- regulating amino acid biosynthesis, oxidative phosphorylation, ribosome biosynthesis, and parts of TCA cycle. Mutations in the O-acetyl-L-homoserine sulfhydrylase Cgl0653 catalyzing formation of L-methionine analog from methanol and methanol-induced membrane-bound transporter Cgl0833 are proven crucial for methanol tolerance. This study demonstrates the importance of -
Farnesyl Phosphatase, a Corpora Allata
Florida International University FIU Digital Commons Department of Biological Sciences College of Arts, Sciences & Education 8-5-2013 Farnesyl Phosphatase, a Corpora allata Enzyme Involved in Juvenile Hormone Biosynthesis in Aedes aegypti Pratik Nyati Department of Biological Sciences, Florida International University, [email protected] Marcela Nouzova Department of Biological Sciences, Florida International University, [email protected] Crisalejandra Rivera-Perez Department of Biological Sciences, Florida International University,, [email protected] Mark E. Clifton Department of Biological Sciences, Florida International University Jamie G. Mayoral Department of Biological Sciences, Florida International University See next page for additional authors Follow this and additional works at: https://digitalcommons.fiu.edu/cas_bio Part of the Biology Commons Recommended Citation Nyati P, Nouzova M, Rivera-Perez C, Clifton ME, Mayoral JG, et al. (2013) Farnesyl Phosphatase, a Corpora allata Enzyme Involved in Juvenile Hormone Biosynthesis in Aedes aegypti. PLoS ONE 8(8): e71967. doi:10.1371/journal.pone.0071967 This work is brought to you for free and open access by the College of Arts, Sciences & Education at FIU Digital Commons. It has been accepted for inclusion in Department of Biological Sciences by an authorized administrator of FIU Digital Commons. For more information, please contact [email protected]. Authors Pratik Nyati, Marcela Nouzova, Crisalejandra Rivera-Perez, Mark E. Clifton, Jamie G. Mayoral, and Fernando G. Noriega This article is available at FIU Digital Commons: https://digitalcommons.fiu.edu/cas_bio/131 Farnesyl Phosphatase, a Corpora allata Enzyme Involved in Juvenile Hormone Biosynthesis in Aedes aegypti Pratik Nyati, Marcela Nouzova, Crisalejandra Rivera-Perez, Mark E. Clifton, Jaime G. Mayoral, Fernando G. -
Chuanxiong Rhizoma Compound on HIF-VEGF Pathway and Cerebral Ischemia-Reperfusion Injury’S Biological Network Based on Systematic Pharmacology
ORIGINAL RESEARCH published: 25 June 2021 doi: 10.3389/fphar.2021.601846 Exploring the Regulatory Mechanism of Hedysarum Multijugum Maxim.-Chuanxiong Rhizoma Compound on HIF-VEGF Pathway and Cerebral Ischemia-Reperfusion Injury’s Biological Network Based on Systematic Pharmacology Kailin Yang 1†, Liuting Zeng 1†, Anqi Ge 2†, Yi Chen 1†, Shanshan Wang 1†, Xiaofei Zhu 1,3† and Jinwen Ge 1,4* Edited by: 1 Takashi Sato, Key Laboratory of Hunan Province for Integrated Traditional Chinese and Western Medicine on Prevention and Treatment of 2 Tokyo University of Pharmacy and Life Cardio-Cerebral Diseases, Hunan University of Chinese Medicine, Changsha, China, Galactophore Department, The First 3 Sciences, Japan Hospital of Hunan University of Chinese Medicine, Changsha, China, School of Graduate, Central South University, Changsha, China, 4Shaoyang University, Shaoyang, China Reviewed by: Hui Zhao, Capital Medical University, China Background: Clinical research found that Hedysarum Multijugum Maxim.-Chuanxiong Maria Luisa Del Moral, fi University of Jaén, Spain Rhizoma Compound (HCC) has de nite curative effect on cerebral ischemic diseases, *Correspondence: such as ischemic stroke and cerebral ischemia-reperfusion injury (CIR). However, its Jinwen Ge mechanism for treating cerebral ischemia is still not fully explained. [email protected] †These authors share first authorship Methods: The traditional Chinese medicine related database were utilized to obtain the components of HCC. The Pharmmapper were used to predict HCC’s potential targets. Specialty section: The CIR genes were obtained from Genecards and OMIM and the protein-protein This article was submitted to interaction (PPI) data of HCC’s targets and IS genes were obtained from String Ethnopharmacology, a section of the journal database. -
The Role of Bile Acids in Overcoming Resistance to Chemotherapy By
The Role of Bile Acids in Overcoming Resistance to Chemotherapy by Simon Chewchuk A thesis submitted as a partial fulfillment of the Requirements for the degree of Doctor of Philosophy (Ph.D.) in Biomolecular Sciences The Faculty of Graduate Studies Laurentian University Sudbury, Ontario, Canada © Simon Chewchuk, 2017 ii Abstract: In the context of cancer therapy, resistance to chemotherapy agents is a serious threat to patient welfare. In these circumstances, patients can either present with cancers that are naturally resistant to conventional therapy, referred to as innate resistance, or with cancers that become resistant following treatment, referred to as acquired resistance. In this thesis, we address the phenomenon of acquired drug resistance, involving cell lines selected for resistance to the anthracycline, doxorubicin. In the first study, we examined the role of the aldo-keto reductases AKR1C3 and AKR1B10 in doxorubicin resistance, enzymes that can hydroxylate doxorubicin to a less toxic form (doxorubicinol). Additionally, these enzymes can function to promote estrogen biosynthesis from estrone, which can have significant effects on cell growth and survival. We demonstrated in the first study that AKR1C3 and AKR1B10 are expressed at higher levels in doxorubicin resistant MCF-7 cells than their isogenic control counterparts. This change in expression correlated very well with increased estrogen synthesis. siRNA-mediated reduction in AKR1C3 and/or AKR1B10 transcript expression had no major effect on doxorubicin resistance, suggesting that these enzymes are not sufficient to mediate the doxorubicin resistance phenotype and that other mechanisms of doxorubicin resistance exist in these cells. We did, however, note that a pharmacological inhibitor of AKR enzymes (a bile acid termed β-cholanic acid) was effective in reversing doxorubicin resistance in doxorubicin-selected cell lines. -
Enzyme DHRS7
Toward the identification of a function of the “orphan” enzyme DHRS7 Inauguraldissertation zur Erlangung der Würde eines Doktors der Philosophie vorgelegt der Philosophisch-Naturwissenschaftlichen Fakultät der Universität Basel von Selene Araya, aus Lugano, Tessin Basel, 2018 Originaldokument gespeichert auf dem Dokumentenserver der Universität Basel edoc.unibas.ch Genehmigt von der Philosophisch-Naturwissenschaftlichen Fakultät auf Antrag von Prof. Dr. Alex Odermatt (Fakultätsverantwortlicher) und Prof. Dr. Michael Arand (Korreferent) Basel, den 26.6.2018 ________________________ Dekan Prof. Dr. Martin Spiess I. List of Abbreviations 3α/βAdiol 3α/β-Androstanediol (5α-Androstane-3α/β,17β-diol) 3α/βHSD 3α/β-hydroxysteroid dehydrogenase 17β-HSD 17β-Hydroxysteroid Dehydrogenase 17αOHProg 17α-Hydroxyprogesterone 20α/βOHProg 20α/β-Hydroxyprogesterone 17α,20α/βdiOHProg 20α/βdihydroxyprogesterone ADT Androgen deprivation therapy ANOVA Analysis of variance AR Androgen Receptor AKR Aldo-Keto Reductase ATCC American Type Culture Collection CAM Cell Adhesion Molecule CYP Cytochrome P450 CBR1 Carbonyl reductase 1 CRPC Castration resistant prostate cancer Ct-value Cycle threshold-value DHRS7 (B/C) Dehydrogenase/Reductase Short Chain Dehydrogenase Family Member 7 (B/C) DHEA Dehydroepiandrosterone DHP Dehydroprogesterone DHT 5α-Dihydrotestosterone DMEM Dulbecco's Modified Eagle's Medium DMSO Dimethyl Sulfoxide DTT Dithiothreitol E1 Estrone E2 Estradiol ECM Extracellular Membrane EDTA Ethylenediaminetetraacetic acid EMT Epithelial-mesenchymal transition ER Endoplasmic Reticulum ERα/β Estrogen Receptor α/β FBS Fetal Bovine Serum 3 FDR False discovery rate FGF Fibroblast growth factor HEPES 4-(2-Hydroxyethyl)-1-Piperazineethanesulfonic Acid HMDB Human Metabolome Database HPLC High Performance Liquid Chromatography HSD Hydroxysteroid Dehydrogenase IC50 Half-Maximal Inhibitory Concentration LNCaP Lymph node carcinoma of the prostate mRNA Messenger Ribonucleic Acid n.d. -
CDH12 Cadherin 12, Type 2 N-Cadherin 2 RPL5 Ribosomal
5 6 6 5 . 4 2 1 1 1 2 4 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 A A A A A A A A A A A A A A A A A A A A C C C C C C C C C C C C C C C C C C C C R R R R R R R R R R R R R R R R R R R R B , B B B B B B B B B B B B B B B B B B B , 9 , , , , 4 , , 3 0 , , , , , , , , 6 2 , , 5 , 0 8 6 4 , 7 5 7 0 2 8 9 1 3 3 3 1 1 7 5 0 4 1 4 0 7 1 0 2 0 6 7 8 0 2 5 7 8 0 3 8 5 4 9 0 1 0 8 8 3 5 6 7 4 7 9 5 2 1 1 8 2 2 1 7 9 6 2 1 7 1 1 0 4 5 3 5 8 9 1 0 0 4 2 5 0 8 1 4 1 6 9 0 0 6 3 6 9 1 0 9 0 3 8 1 3 5 6 3 6 0 4 2 6 1 0 1 2 1 9 9 7 9 5 7 1 5 8 9 8 8 2 1 9 9 1 1 1 9 6 9 8 9 7 8 4 5 8 8 6 4 8 1 1 2 8 6 2 7 9 8 3 5 4 3 2 1 7 9 5 3 1 3 2 1 2 9 5 1 1 1 1 1 1 5 9 5 3 2 6 3 4 1 3 1 1 4 1 4 1 7 1 3 4 3 2 7 6 4 2 7 2 1 2 1 5 1 6 3 5 6 1 3 6 4 7 1 6 5 1 1 4 1 6 1 7 6 4 7 e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p p m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m m -
Supplementary Materials
Supplementary Materials COMPARATIVE ANALYSIS OF THE TRANSCRIPTOME, PROTEOME AND miRNA PROFILE OF KUPFFER CELLS AND MONOCYTES Andrey Elchaninov1,3*, Anastasiya Lokhonina1,3, Maria Nikitina2, Polina Vishnyakova1,3, Andrey Makarov1, Irina Arutyunyan1, Anastasiya Poltavets1, Evgeniya Kananykhina2, Sergey Kovalchuk4, Evgeny Karpulevich5,6, Galina Bolshakova2, Gennady Sukhikh1, Timur Fatkhudinov2,3 1 Laboratory of Regenerative Medicine, National Medical Research Center for Obstetrics, Gynecology and Perinatology Named after Academician V.I. Kulakov of Ministry of Healthcare of Russian Federation, Moscow, Russia 2 Laboratory of Growth and Development, Scientific Research Institute of Human Morphology, Moscow, Russia 3 Histology Department, Medical Institute, Peoples' Friendship University of Russia, Moscow, Russia 4 Laboratory of Bioinformatic methods for Combinatorial Chemistry and Biology, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Moscow, Russia 5 Information Systems Department, Ivannikov Institute for System Programming of the Russian Academy of Sciences, Moscow, Russia 6 Genome Engineering Laboratory, Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region, Russia Figure S1. Flow cytometry analysis of unsorted blood sample. Representative forward, side scattering and histogram are shown. The proportions of negative cells were determined in relation to the isotype controls. The percentages of positive cells are indicated. The blue curve corresponds to the isotype control. Figure S2. Flow cytometry analysis of unsorted liver stromal cells. Representative forward, side scattering and histogram are shown. The proportions of negative cells were determined in relation to the isotype controls. The percentages of positive cells are indicated. The blue curve corresponds to the isotype control. Figure S3. MiRNAs expression analysis in monocytes and Kupffer cells. Full-length of heatmaps are presented. -
Identification and Characterization of Genes That Control Fat
Claire D’Andre et al. Journal of Animal Science and Biotechnology 2013, 4:43 http://www.jasbsci.com/content/4/1/43 JOURNAL OF ANIMAL SCIENCE AND BIOTECHNOLOGY RESEARCH Open Access Identification and characterization of genes that control fat deposition in chickens Hirwa Claire D’Andre1,3*, Wallace Paul2, Xu Shen3, Xinzheng Jia3, Rong Zhang3, Liang Sun3 and Xiquan Zhang3 Abstract Background: Fat deposits in chickens contribute significantly to meat quality attributes such as juiciness, flavor, taste and other organoleptic properties. The quantity of fat deposited increases faster and earlier in the fast- growing chickens than in slow-growing chickens. In this study, Affymetrix Genechip® Chicken Genome Arrays 32773 transcripts were used to compare gene expression profiles in liver and hypothalamus tissues of fast-growing and slow-growing chicken at 8 wk of age. Real-time RT-PCR was used to validate the differential expression of genes selected from the microarray analysis. The mRNA expression of the genes was further examined in fat tissues. The association of single nucleotide polymorphisms of four lipid-related genes with fat traits was examined in a F2 resource population. Results: Four hundred genes in the liver tissues and 220 genes hypothalamus tissues, respectively, were identified to be differentially expressed in fast-growing chickens and slow-growing chickens. Expression levels of genes for lipid metabolism (SULT1B1, ACSBG2, PNPLA3, LPL, AOAH) carbohydrate metabolism (MGAT4B, XYLB, GBE1, PGM1, HKDC1)cholesttrol biosynthesis (FDPS, LSS, HMGCR, NSDHL, DHCR24, IDI1, ME1) HSD17B7 and other reaction or pro- cesses (CYP1A4, CYP1A1, AKR1B1, CYP4V2, DDO) were higher in the fast-growing White Recessive Rock chickens than in the slow-growing Xinghua chickens. -
Decreased Biochemical Progression in Patients with Castration‑Resistant
ONCOLOGY LETTERS 19: 4151-4160, 2020 Decreased biochemical progression in patients with castration‑resistant prostate cancer using a novel mefenamic acid anti‑inflammatory therapy: A randomized controlled trial JOSÉ GUZMAN‑ESQUIVEL1,2, MARTHA A. MENDOZA-HERNANDEZ1, DANIEL TIBURCIO-JIMENEZ1, OSCAR N. AVILA‑ZAMORA3, JOSUEL DELGADO-ENCISO4, LUIS DE-LEON-ZARAGOZA2,3, JUAN C. CASAREZ-PRICE2,3, IRAM P. RODRIGUEZ-SANCHEZ5, MARGARITA L. MARTINEZ-FIERRO6, CARMEN MEZA-ROBLES1,3, ALEJANDRO BAROCIO-ACOSTA3, LUZ M. BALTAZAR-RODRIGUEZ1, SERGIO A. ZAIZAR-FREGOSO1, JORGE E. PLATA-FLORENZANO2,3 and IVÁN DELGADO‑ENCISO1,3 1Department of Molecular Medicine, School of Medicine, University of Colima, Colima 28040; 2Department of Research, General Hospital of Zone No. 1 IMSS, Villa de Alvarez, Colima 28983; 3Department of Research, Cancerology State Institute, Colima State Health Services; 4Department of Research, Foundation for Cancer Ethics, Education and Research of The Cancerology State Institute, Colima 28085; 5Molecular and Structural Physiology Laboratory, School of Biological Sciences, Autonomous University of Nuevo León, Monterrey, Nuevo León 64460; 6Molecular Medicine Laboratory, Academic Unit of Human Medicine and Health Sciences, Autonomous University of Zacatecas, Zacatecas 98160, Mexico Received July 19, 2019; Accepted November 13, 2019 DOI: 10.3892/ol.2020.11509 Abstract. Prostate cancer (PCa) is the second most common increase in the placebo group (P=0.024). In the patients treated non-dermatological cancer in men and is a growing public with the placebo, 70% had biochemical disease progression health problem. Castration-resistant disease (CRD) is the most (an increase of ≥25% in PSA levels), which did not occur advanced stage of the disease and is difficult to control. -
1 DECLARATION This Work Is Original and Has Not Been Previously
AKR1C3 inhibition by curcumin, demethoxycurcumin, and bisdemethoxycurcumin: an investigation Item Type Thesis or dissertation Authors Calhoon, Brecken Citation Calhoon, B. (2019). AKR1C3 inhibition by curcumin, demethoxycurcumin, and bisdemethoxycurcumin: an investigation. (Masters thesis). University of Chester, United Kingdom. Publisher University of Chester Rights Attribution-NonCommercial-NoDerivatives 4.0 International Download date 25/09/2021 00:32:38 Item License http://creativecommons.org/licenses/by-nc-nd/4.0/ Link to Item http://hdl.handle.net/10034/623327 1 DECLARATION This work is original and has not been previously submitted in support of a Degree qualification or other course. Signed ……Brecken Elizabeth Calhoon………. Date…02/10/2019….. Word count: 4188 2 Research Article AKR1C3 inhibition by curcumin, demethoxycurcumin, and bisdemethoxycurcumin: an investigation Brecken Calhoon Abstract Background: Aldo-keto reductase 1C3 (AKR1C3) has been shown to be overexpressed in cancers due to its regulatory roles in cell proliferation and differentiation. Curcumin, known to have anti-tumour properties, and its analogues demethoxycurcumin (DMC) and bisdemethoxycurcumin (BDMC) were studied to determine their inhibitory effects on the AKR1C3 enzyme. Methods: AKR1C3 was purified and analysed to determine its protein concentration in transformed Escherichia coli (E. coli) cells. Enzyme assays equaling 1 mL contained 2.82 mg/mL AKR1C3, 50 μM of 3 mM NADPH, and varying volumes of potassium phosphate (50 mM, pH 6.5), 9,10-phenanthrenequinone (PQ), and inhibitors were measured at 340 nm. The Vmax, Km, KI, and 2 of AKR1C3 in the presence and absence of inhibitors were determined using a non- linear regression analysis on Fig.P Software. Results: PQ alone found Vmax = 0.47 IU/mg, Km = .435 μM, Ki = 6.29 μM, and 2 = 0.946.