General Information of Drug Off-Target (DOT) (ID: OT5UO1FA)

DOT Name Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD)
Synonyms hnRNP D0; AU-rich element RNA-binding protein 1
Gene Name HNRNPD
Related Disease
Bone osteosarcoma ( )
Neoplasm ( )
Osteosarcoma ( )
Autoimmune disease ( )
B-cell neoplasm ( )
Bladder cancer ( )
Carcinoma of esophagus ( )
Cardiac failure ( )
Coeliac disease ( )
Congestive heart failure ( )
Crohn disease ( )
Esophageal squamous cell carcinoma ( )
Gastric cancer ( )
Hepatitis C virus infection ( )
High blood pressure ( )
Idiopathic interstitial pneumonia ( )
Liver cancer ( )
Lung adenocarcinoma ( )
Melanoma ( )
Myelodysplastic syndrome ( )
Non-small-cell lung cancer ( )
Osteoarthritis ( )
Sarcoidosis ( )
Squamous cell carcinoma ( )
Stomach cancer ( )
Systemic lupus erythematosus ( )
Thyroid gland carcinoma ( )
Urinary bladder cancer ( )
Urinary bladder neoplasm ( )
Zika virus infection ( )
Hepatocellular carcinoma ( )
Limb-girdle muscular dystrophy ( )
Lyme disease ( )
Advanced cancer ( )
Chronic obstructive pulmonary disease ( )
Colorectal carcinoma ( )
Enterovirus infection ( )
Schizophrenia ( )
Thyroid cancer ( )
UniProt ID
HNRPD_HUMAN
3D Structure
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2D Sequence (FASTA)
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3D Structure (PDB)
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PDB ID
1HD0; 1HD1; 1IQT; 1WTB; 1X0F; 2Z5N; 5IM0
Pfam ID
PF08143 ; PF00076
Sequence
MSEEQFGGDGAAAAATAAVGGSAGEQEGAMVAATQGAAAAAGSGAGTGGGTASGGTEGGS
AESEGAKIDASKNEEDEGHSNSSPRHSEAATAQREEWKMFIGGLSWDTTKKDLKDYFSKF
GEVVDCTLKLDPITGRSRGFGFVLFKESESVDKVMDQKEHKLNGKVIDPKRAKAMKTKEP
VKKIFVGGLSPDTPEEKIREYFGGFGEVESIELPMDNKTNKRRGFCFITFKEEEPVKKIM
EKKYHNVGLSKCEIKVAMSKEQYQQQQQWGSRGGFAGRARGRGGGPSQNWNQGYSNYWNQ
GYGNYGYNSQGYGGYGGYDYTGYNNYYGYGDYSNQQSGYGKVSRRGGHQNSYKPY
Function
Binds with high affinity to RNA molecules that contain AU-rich elements (AREs) found within the 3'-UTR of many proto-oncogenes and cytokine mRNAs. Also binds to double- and single-stranded DNA sequences in a specific manner and functions a transcription factor. Each of the RNA-binding domains specifically can bind solely to a single-stranded non-monotonous 5'-UUAG-3' sequence and also weaker to the single-stranded 5'-TTAGGG-3' telomeric DNA repeat. Binds RNA oligonucleotides with 5'-UUAGGG-3' repeats more tightly than the telomeric single-stranded DNA 5'-TTAGGG-3' repeats. Binding of RRM1 to DNA inhibits the formation of DNA quadruplex structure which may play a role in telomere elongation. May be involved in translationally coupled mRNA turnover. Implicated with other RNA-binding proteins in the cytoplasmic deadenylation/translational and decay interplay of the FOS mRNA mediated by the major coding-region determinant of instability (mCRD) domain. May play a role in the regulation of the rhythmic expression of circadian clock core genes. Directly binds to the 3'UTR of CRY1 mRNA and induces CRY1 rhythmic translation. May also be involved in the regulation of PER2 translation.
Reactome Pathway
mRNA Splicing - Major Pathway (R-HSA-72163 )
Processing of Capped Intron-Containing Pre-mRNA (R-HSA-72203 )
AUF1 (hnRNP D0) binds and destabilizes mRNA (R-HSA-450408 )

Molecular Interaction Atlas (MIA) of This DOT

39 Disease(s) Related to This DOT
Disease Name Disease ID Evidence Level Mode of Inheritance REF
Bone osteosarcoma DIST1004 Definitive Biomarker [1]
Neoplasm DISZKGEW Definitive Altered Expression [2]
Osteosarcoma DISLQ7E2 Definitive Biomarker [1]
Autoimmune disease DISORMTM Strong Biomarker [3]
B-cell neoplasm DISVY326 Strong Biomarker [4]
Bladder cancer DISUHNM0 Strong Biomarker [5]
Carcinoma of esophagus DISS6G4D Strong Altered Expression [2]
Cardiac failure DISDC067 Strong Biomarker [6]
Coeliac disease DISIY60C Strong Genetic Variation [7]
Congestive heart failure DIS32MEA Strong Biomarker [6]
Crohn disease DIS2C5Q8 Strong Genetic Variation [8]
Esophageal squamous cell carcinoma DIS5N2GV Strong Altered Expression [2]
Gastric cancer DISXGOUK Strong Biomarker [9]
Hepatitis C virus infection DISQ0M8R Strong Altered Expression [10]
High blood pressure DISY2OHH Strong Biomarker [6]
Idiopathic interstitial pneumonia DISH7LPY Strong Altered Expression [11]
Liver cancer DISDE4BI Strong Biomarker [12]
Lung adenocarcinoma DISD51WR Strong Biomarker [13]
Melanoma DIS1RRCY Strong Altered Expression [14]
Myelodysplastic syndrome DISYHNUI Strong Biomarker [15]
Non-small-cell lung cancer DIS5Y6R9 Strong Biomarker [13]
Osteoarthritis DIS05URM Strong Altered Expression [3]
Sarcoidosis DISE5B8Z Strong Altered Expression [11]
Squamous cell carcinoma DISQVIFL Strong Biomarker [13]
Stomach cancer DISKIJSX Strong Biomarker [9]
Systemic lupus erythematosus DISI1SZ7 Strong Biomarker [3]
Thyroid gland carcinoma DISMNGZ0 Strong Altered Expression [16]
Urinary bladder cancer DISDV4T7 Strong Biomarker [5]
Urinary bladder neoplasm DIS7HACE Strong Biomarker [5]
Zika virus infection DISQUCTY Strong Biomarker [17]
Hepatocellular carcinoma DIS0J828 moderate Biomarker [18]
Limb-girdle muscular dystrophy DISI9Y1Z moderate Biomarker [19]
Lyme disease DISO70G5 moderate Biomarker [20]
Advanced cancer DISAT1Z9 Limited Biomarker [21]
Chronic obstructive pulmonary disease DISQCIRF Limited Altered Expression [22]
Colorectal carcinoma DIS5PYL0 Limited Altered Expression [23]
Enterovirus infection DISH2UDP Limited Biomarker [24]
Schizophrenia DISSRV2N Limited Biomarker [25]
Thyroid cancer DIS3VLDH Limited Altered Expression [16]
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⏷ Show the Full List of 39 Disease(s)
Molecular Interaction Atlas (MIA) Jump to Detail Molecular Interaction Atlas of This DOT
This DOT Affected the Drug Response of 2 Drug(s)
Drug Name Drug ID Highest Status Interaction REF
Doxorubicin DMVP5YE Approved Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD) decreases the response to substance of Doxorubicin. [51]
Daunorubicin DMQUSBT Approved Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD) affects the response to substance of Daunorubicin. [52]
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25 Drug(s) Affected the Gene/Protein Processing of This DOT
Drug Name Drug ID Highest Status Interaction REF
Valproate DMCFE9I Approved Valproate decreases the expression of Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD). [26]
Ciclosporin DMAZJFX Approved Ciclosporin decreases the expression of Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD). [27]
Acetaminophen DMUIE76 Approved Acetaminophen decreases the expression of Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD). [28]
Cisplatin DMRHGI9 Approved Cisplatin decreases the expression of Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD). [29]
Ivermectin DMDBX5F Approved Ivermectin decreases the expression of Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD). [30]
Quercetin DM3NC4M Approved Quercetin decreases the expression of Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD). [31]
Hydrogen peroxide DM1NG5W Approved Hydrogen peroxide affects the expression of Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD). [32]
Vorinostat DMWMPD4 Approved Vorinostat decreases the expression of Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD). [33]
Carbamazepine DMZOLBI Approved Carbamazepine affects the expression of Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD). [34]
Selenium DM25CGV Approved Selenium increases the expression of Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD). [35]
Demecolcine DMCZQGK Approved Demecolcine decreases the expression of Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD). [36]
Irinotecan DMP6SC2 Approved Irinotecan decreases the expression of Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD). [37]
Diclofenac DMPIHLS Approved Diclofenac affects the expression of Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD). [34]
Piroxicam DMTK234 Approved Piroxicam decreases the expression of Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD). [38]
Clozapine DMFC71L Approved Clozapine decreases the expression of Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD). [39]
Benzatropine DMF7EXL Approved Benzatropine decreases the expression of Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD). [39]
Urethane DM7NSI0 Phase 4 Urethane decreases the expression of Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD). [41]
Curcumin DMQPH29 Phase 3 Curcumin decreases the expression of Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD). [42]
Benzo(a)pyrene DMN7J43 Phase 1 Benzo(a)pyrene decreases the expression of Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD). [43]
(+)-JQ1 DM1CZSJ Phase 1 (+)-JQ1 affects the expression of Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD). [44]
Bisphenol A DM2ZLD7 Investigative Bisphenol A decreases the expression of Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD). [46]
Trichostatin A DM9C8NX Investigative Trichostatin A affects the expression of Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD). [47]
Formaldehyde DM7Q6M0 Investigative Formaldehyde decreases the expression of Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD). [48]
methyl p-hydroxybenzoate DMO58UW Investigative methyl p-hydroxybenzoate decreases the expression of Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD). [49]
Rapamycin Immunosuppressant Drug DM678IB Investigative Rapamycin Immunosuppressant Drug decreases the expression of Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD). [50]
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⏷ Show the Full List of 25 Drug(s)
1 Drug(s) Affected the Protein Interaction/Cellular Processes of This DOT
Drug Name Drug ID Highest Status Interaction REF
Dihydroartemisinin DMBXVMZ Approved Dihydroartemisinin affects the binding of Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD). [40]
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2 Drug(s) Affected the Post-Translational Modifications of This DOT
Drug Name Drug ID Highest Status Interaction REF
PMID28870136-Compound-52 DMFDERP Patented PMID28870136-Compound-52 affects the phosphorylation of Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD). [45]
Coumarin DM0N8ZM Investigative Coumarin increases the phosphorylation of Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD). [45]
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References

1 AUF1 positively controls angiogenesis through mRNA stabilization-dependent up-regulation of HIF-1 and VEGF-A in human osteosarcoma.Oncotarget. 2019 Aug 6;10(47):4868-4879. doi: 10.18632/oncotarget.27115. eCollection 2019 Aug 6.
2 Upregulation of AUF1 is involved in the proliferation of esophageal squamous cell carcinoma through GCH1.Int J Oncol. 2016 Nov;49(5):2001-2010. doi: 10.3892/ijo.2016.3713. Epub 2016 Sep 28.
3 AUF1, the regulator of tumor necrosis factor alpha messenger RNA decay, is targeted by autoantibodies of patients with systemic rheumatic diseases.Arthritis Rheum. 2008 Feb;58(2):511-20. doi: 10.1002/art.23306.
4 The long noncoding RNA ASNR regulates degradation of Bcl-2 mRNA through its interaction with AUF1.Sci Rep. 2016 Aug 31;6:32189. doi: 10.1038/srep32189.
5 MicroRNA-146b Overexpression Promotes Human Bladder Cancer Invasion via Enhancing ETS2-Mediated mmp2 mRNA Transcription.Mol Ther Nucleic Acids. 2019 Jun 7;16:531-542. doi: 10.1016/j.omtn.2019.04.007. Epub 2019 Apr 14.
6 The role of 3'-untranslated region (3'-UTR) mediated mRNA stability in cardiovascular pathophysiology.Mol Cell Biochem. 2001 Aug;224(1-2):53-67. doi: 10.1023/a:1011982932645.
7 A long noncoding RNA associated with susceptibility to celiac disease.Science. 2016 Apr 1;352(6281):91-5. doi: 10.1126/science.aad0467.
8 Complex interaction between HNRNPD mutations and risk polymorphisms is associated with discordant Crohn's disease in monozygotic twins.Autoimmunity. 2017 Aug;50(5):275-276. doi: 10.1080/08916934.2017.1300883. Epub 2017 Mar 16.
9 Mycoplasma hyorhinis infection in gastric carcinoma and its effects on the malignant phenotypes of gastric cancer cells.BMC Gastroenterol. 2010 Nov 10;10:132. doi: 10.1186/1471-230X-10-132.
10 RNA-binding protein hnRNP D modulates internal ribosome entry site-dependent translation of hepatitis C virus RNA.J Virol. 2008 Dec;82(24):12082-93. doi: 10.1128/JVI.01405-08. Epub 2008 Oct 8.
11 Expression Profile of Six RNA-Binding Proteins in Pulmonary Sarcoidosis.PLoS One. 2016 Aug 30;11(8):e0161669. doi: 10.1371/journal.pone.0161669. eCollection 2016.
12 Role of transcriptional and posttranscriptional regulation of methionine adenosyltransferases in liver cancer progression.Hepatology. 2012 Jul;56(1):165-75. doi: 10.1002/hep.25643. Epub 2012 Jun 5.
13 A novel in silico reverse-transcriptomics-based identification and blood-based validation of a panel of sub-type specific biomarkers in lung cancer.BMC Genomics. 2013;14 Suppl 6(Suppl 6):S5. doi: 10.1186/1471-2164-14-S6-S5. Epub 2013 Oct 25.
14 Increased interleukin-10 mRNA stability in melanoma cells is associated with decreased levels of A + U-rich element binding factor AUF1.J Interferon Cytokine Res. 2003 Oct;23(10):553-64. doi: 10.1089/107999003322485053.
15 Disruption of SF3B1 results in deregulated expression and splicing of key genes and pathways in myelodysplastic syndrome hematopoietic stem and progenitor cells.Leukemia. 2015 May;29(5):1092-103. doi: 10.1038/leu.2014.331. Epub 2014 Nov 27.
16 Induction of epithelial-mesenchymal transition (EMT) by Beclin 1 knockdown via posttranscriptional upregulation of ZEB1 in thyroid cancer cells.Oncotarget. 2016 Oct 25;7(43):70364-70377. doi: 10.18632/oncotarget.12217.
17 The Host Factor AUF1 p45 Supports Flavivirus Propagation by Triggering the RNA Switch Required for Viral Genome Cyclization.J Virol. 2018 Feb 26;92(6):e01647-17. doi: 10.1128/JVI.01647-17. Print 2018 Mar 15.
18 Mycoplasma infection promotes tumor progression via interaction of the mycoplasmal protein p37 and epithelial cell adhesion molecule in hepatocellular carcinoma.Cancer Lett. 2019 Jul 10;454:44-52. doi: 10.1016/j.canlet.2019.04.007. Epub 2019 Apr 10.
19 Muscle development and regeneration controlled by AUF1-mediated stage-specific degradation of fate-determining checkpoint mRNAs.Proc Natl Acad Sci U S A. 2019 Jun 4;116(23):11285-11290. doi: 10.1073/pnas.1901165116. Epub 2019 May 21.
20 The Borrelia burgdorferi 37-kilodalton immunoblot band (P37) used in serodiagnosis of early lyme disease is the flaA gene product.J Clin Microbiol. 1999 Mar;37(3):548-52. doi: 10.1128/JCM.37.3.548-552.1999.
21 Berberine Promotes Apoptosis of Colorectal Cancer via Regulation of the Long Non-Coding RNA (lncRNA) Cancer Susceptibility Candidate 2 (CASC2)/AU-Binding Factor 1 (AUF1)/B-Cell CLL/Lymphoma 2 (Bcl-2) Axis.Med Sci Monit. 2019 Jan 25;25:730-738. doi: 10.12659/MSM.912082.
22 Differential expression of RNA-binding proteins in bronchial epithelium of stable COPD patients.Int J Chron Obstruct Pulmon Dis. 2018 Oct 12;13:3173-3190. doi: 10.2147/COPD.S166284. eCollection 2018.
23 Identification and Verification of Two Novel Differentially Expressed Proteins from Non-neoplastic Mucosa and Colorectal Carcinoma Via iTRAQ Combined with Liquid Chromatography-Mass Spectrometry.Pathol Oncol Res. 2020 Apr;26(2):967-976. doi: 10.1007/s12253-019-00651-y. Epub 2019 Mar 29.
24 Direct and Indirect Effects on Viral Translation and RNA Replication Are Required for AUF1 Restriction of Enterovirus Infections in Human Cells.mBio. 2018 Sep 4;9(5):e01669-18. doi: 10.1128/mBio.01669-18.
25 Transcription of PIK3CD in human brain and schizophrenia: regulation by proinflammatory cytokines.Hum Mol Genet. 2019 Oct 1;28(19):3188-3198. doi: 10.1093/hmg/ddz144.
26 Stem cell transcriptome responses and corresponding biomarkers that indicate the transition from adaptive responses to cytotoxicity. Chem Res Toxicol. 2017 Apr 17;30(4):905-922.
27 Integrating multiple omics to unravel mechanisms of Cyclosporin A induced hepatotoxicity in vitro. Toxicol In Vitro. 2015 Apr;29(3):489-501.
28 Toxicogenomics-based prediction of acetaminophen-induced liver injury using human hepatic cell systems. Toxicol Lett. 2016 Jan 5;240(1):50-9.
29 Activation of AIFM2 enhances apoptosis of human lung cancer cells undergoing toxicological stress. Toxicol Lett. 2016 Sep 6;258:227-236.
30 Quantitative proteomics reveals a broad-spectrum antiviral property of ivermectin, benefiting for COVID-19 treatment. J Cell Physiol. 2021 Apr;236(4):2959-2975. doi: 10.1002/jcp.30055. Epub 2020 Sep 22.
31 Comparison of phenotypic and transcriptomic effects of false-positive genotoxins, true genotoxins and non-genotoxins using HepG2 cells. Mutagenesis. 2011 Sep;26(5):593-604.
32 Global gene expression analysis reveals differences in cellular responses to hydroxyl- and superoxide anion radical-induced oxidative stress in caco-2 cells. Toxicol Sci. 2010 Apr;114(2):193-203. doi: 10.1093/toxsci/kfp309. Epub 2009 Dec 31.
33 Definition of transcriptome-based indices for quantitative characterization of chemically disturbed stem cell development: introduction of the STOP-Toxukn and STOP-Toxukk tests. Arch Toxicol. 2017 Feb;91(2):839-864.
34 Drug-induced endoplasmic reticulum and oxidative stress responses independently sensitize toward TNF-mediated hepatotoxicity. Toxicol Sci. 2014 Jul;140(1):144-59. doi: 10.1093/toxsci/kfu072. Epub 2014 Apr 20.
35 Selenium and vitamin E: cell type- and intervention-specific tissue effects in prostate cancer. J Natl Cancer Inst. 2009 Mar 4;101(5):306-20.
36 Characterization of formaldehyde's genotoxic mode of action by gene expression analysis in TK6 cells. Arch Toxicol. 2013 Nov;87(11):1999-2012.
37 Clinical determinants of response to irinotecan-based therapy derived from cell line models. Clin Cancer Res. 2008 Oct 15;14(20):6647-55.
38 Apoptosis induced by piroxicam plus cisplatin combined treatment is triggered by p21 in mesothelioma. PLoS One. 2011;6(8):e23569.
39 Cannabidiol Displays Proteomic Similarities to Antipsychotics in Cuprizone-Exposed Human Oligodendrocytic Cell Line MO3.13. Front Mol Neurosci. 2021 May 28;14:673144. doi: 10.3389/fnmol.2021.673144. eCollection 2021.
40 Untargeted Proteomics and Systems-Based Mechanistic Investigation of Artesunate in Human Bronchial Epithelial Cells. Chem Res Toxicol. 2015 Oct 19;28(10):1903-13. doi: 10.1021/acs.chemrestox.5b00105. Epub 2015 Sep 21.
41 Ethyl carbamate induces cell death through its effects on multiple metabolic pathways. Chem Biol Interact. 2017 Nov 1;277:21-32.
42 Curcumin downregulates the inflammatory cytokines CXCL1 and -2 in breast cancer cells via NFkappaB. Carcinogenesis. 2008 Apr;29(4):779-89.
43 Transcriptional signature of human macrophages exposed to the environmental contaminant benzo(a)pyrene. Toxicol Sci. 2010 Apr;114(2):247-59.
44 Synergistic activity of BET protein antagonist-based combinations in mantle cell lymphoma cells sensitive or resistant to ibrutinib. Blood. 2015 Sep 24;126(13):1565-74.
45 Quantitative phosphoproteomics reveal cellular responses from caffeine, coumarin and quercetin in treated HepG2 cells. Toxicol Appl Pharmacol. 2022 Aug 15;449:116110. doi: 10.1016/j.taap.2022.116110. Epub 2022 Jun 7.
46 Identification of mechanisms of action of bisphenol a-induced human preadipocyte differentiation by transcriptional profiling. Obesity (Silver Spring). 2014 Nov;22(11):2333-43.
47 A trichostatin A expression signature identified by TempO-Seq targeted whole transcriptome profiling. PLoS One. 2017 May 25;12(5):e0178302. doi: 10.1371/journal.pone.0178302. eCollection 2017.
48 Gene expression changes in primary human nasal epithelial cells exposed to formaldehyde in vitro. Toxicol Lett. 2010 Oct 5;198(2):289-95.
49 Transcriptome dynamics of alternative splicing events revealed early phase of apoptosis induced by methylparaben in H1299 human lung carcinoma cells. Arch Toxicol. 2020 Jan;94(1):127-140. doi: 10.1007/s00204-019-02629-w. Epub 2019 Nov 20.
50 Identification of AUF1 as a rapamycin-responsive binding protein to the 5'-terminal oligopyrimidine element of mRNAs. Arch Biochem Biophys. 2007 Sep 1;465(1):274-81. doi: 10.1016/j.abb.2007.06.001. Epub 2007 Jun 9.
51 Nuclear proteomics with XRCC3 knockdown to reveal the development of doxorubicin-resistant uterine cancer. Toxicol Sci. 2014 Jun;139(2):396-406. doi: 10.1093/toxsci/kfu051. Epub 2014 Mar 27.
52 Genetic variants contributing to daunorubicin-induced cytotoxicity. Cancer Res. 2008 May 1;68(9):3161-8. doi: 10.1158/0008-5472.CAN-07-6381.