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van der Noord VE, van de Water B, Le Dévédec SE. Targeting the Heterogeneous Genomic Landscape in Triple-Negative Breast Cancer through Inhibitors of the Transcriptional Machinery. Cancers (Basel) 2022; 14:4353. [PMID: 36139513 PMCID: PMC9496798 DOI: 10.3390/cancers14184353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 08/28/2022] [Accepted: 08/30/2022] [Indexed: 11/16/2022] Open
Abstract
Triple-negative breast cancer (TNBC) is an aggressive subtype of breast cancer defined by lack of the estrogen, progesterone and human epidermal growth factor receptor 2. Although TNBC tumors contain a wide variety of oncogenic mutations and copy number alterations, the direct targeting of these alterations has failed to substantially improve therapeutic efficacy. This efficacy is strongly limited by interpatient and intratumor heterogeneity, and thereby a lack in uniformity of targetable drivers. Most of these genetic abnormalities eventually drive specific transcriptional programs, which may be a general underlying vulnerability. Currently, there are multiple selective inhibitors, which target the transcriptional machinery through transcriptional cyclin-dependent kinases (CDKs) 7, 8, 9, 12 and 13 and bromodomain extra-terminal motif (BET) proteins, including BRD4. In this review, we discuss how inhibitors of the transcriptional machinery can effectively target genetic abnormalities in TNBC, and how these abnormalities can influence sensitivity to these inhibitors. These inhibitors target the genomic landscape in TNBC by specifically suppressing MYC-driven transcription, inducing further DNA damage, improving anti-cancer immunity, and preventing drug resistance against MAPK and PI3K-targeted therapies. Because the transcriptional machinery enables transcription and propagation of multiple cancer drivers, it may be a promising target for (combination) treatment, especially of heterogeneous malignancies, including TNBC.
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Affiliation(s)
| | | | - Sylvia E. Le Dévédec
- Division of Drug Discovery and Safety, Leiden Academic Centre for Drug Research, Leiden University, 2333 CC Leiden, The Netherlands
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Shy BR, Vykunta VS, Ha A, Talbot A, Roth TL, Nguyen DN, Pfeifer WG, Chen YY, Blaeschke F, Shifrut E, Vedova S, Mamedov MR, Chung JJ, Li H, Yu R, Wu D, Wolf J, Martin TG, Castro CE, Ye L, Esensten JH, Eyquem J, Marson A. High-yield genome engineering in primary cells using a hybrid ssDNA repair template and small-molecule cocktails. Nat Biotechnol 2022. [PMID: 36008610 DOI: 10.1038/s41587-022-01418-8] [Citation(s) in RCA: 55] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 07/02/2022] [Indexed: 01/12/2023]
Abstract
Enhancing CRISPR-mediated site-specific transgene insertion efficiency by homology-directed repair (HDR) using high concentrations of double-stranded DNA (dsDNA) with Cas9 target sequences (CTSs) can be toxic to primary cells. Here, we develop single-stranded DNA (ssDNA) HDR templates (HDRTs) incorporating CTSs with reduced toxicity that boost knock-in efficiency and yield by an average of around two- to threefold relative to dsDNA CTSs. Using small-molecule combinations that enhance HDR, we could further increase knock-in efficiencies by an additional roughly two- to threefold on average. Our method works across a variety of target loci, knock-in constructs and primary human cell types, reaching HDR efficiencies of >80-90%. We demonstrate application of this approach for both pathogenic gene variant modeling and gene-replacement strategies for IL2RA and CTLA4 mutations associated with Mendelian disorders. Finally, we develop a good manufacturing practice (GMP)-compatible process for nonviral chimeric antigen receptor-T cell manufacturing, with knock-in efficiencies (46-62%) and yields (>1.5 × 109 modified cells) exceeding those of conventional approaches.
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Abstract
Due to the bottlenecks encountered in traditional treatment for tumor, more effective drug targets need to be developed. Cell division cycle 7 kinase plays an important role in DNA replication, DNA repair and recombination signaling pathways. In this review, we first describe recent studies on the role of CDC7 in DNA replication in normal human tissues, and then we integrate new evidence focusing on the important role of CDC7 in replication stress tolerance of tumor cells and its impact on the prognosis of clinical oncology patients. Finally, we comb through the CDC7 inhibitors identified in recent studies as a reference for further research in clinical practice.
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Affiliation(s)
- Runze Liu
- National Center for International Research of Bio-Targeting Theranostics, Guangxi Key Laboratory of Bio-Targeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Talent Highland of Bio-Targeting Theranostics, Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Yong Huang
- National Center for International Research of Bio-Targeting Theranostics, Guangxi Key Laboratory of Bio-Targeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Talent Highland of Bio-Targeting Theranostics, Guangxi Medical University, Nanning, 530021, Guangxi, China.
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Omer OS, Hertweck A, Roberts LB, Lo JW, Clough JN, Jackson I, Pantazi ED, Irving PM, MacDonald TT, Pavlidis P, Jenner RG, Lord GM. Cyclin-dependent Kinase 9 as a Potential Target for Anti-TNF-resistant Inflammatory Bowel Disease. Cell Mol Gastroenterol Hepatol 2022; 14:625-641. [PMID: 35660024 PMCID: PMC9356186 DOI: 10.1016/j.jcmgh.2022.05.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 05/24/2022] [Accepted: 05/26/2022] [Indexed: 12/10/2022]
Abstract
BACKGROUND & AIMS Resistance to single cytokine blockade, namely anti-tumor necrosis factor (TNF) therapy, is a growing concern for patients with inflammatory bowel disease (IBD). The transcription factor T-bet is a critical regulator of intestinal homeostasis, is genetically linked to mucosal inflammation and controls the expression of multiples genes such as the pro-inflammatory cytokines interferon (IFN)-γ and TNF. Inhibiting T-bet may therefore offer a more attractive prospect for treating IBD but remains challenging to target therapeutically. In this study, we evaluate the effect of targeting the transactivation function of T-bet using inhibitors of P-TEFb (CDK9-cyclin T), a transcriptional elongation factor downstream of T-bet. METHODS Using an adaptive immune-mediated colitis model, human colonic lymphocytes from patients with IBD and multiple large clinical datasets, we investigate the effect of cyclin-dependent kinase 9 (CDK9) inhibitors on cytokine production and gene expression in colonic CD4+ T cells and link these genetic modules to clinical response in patients with IBD. RESULTS Systemic CDK9 inhibition led to histological improvement of immune-mediated colitis and was associated with targeted suppression of colonic CD4+ T cell-derived IFN-γ and IL-17A. In colonic lymphocytes from patients with IBD, CDK9 inhibition potently repressed genes responsible for pro-inflammatory signalling, and in particular genes regulated by T-bet. Remarkably, CDK9 inhibition targeted genes that were highly expressed in anti-TNF resistant IBD and that predicted non-response to anti-TNF therapy. CONCLUSION Collectively, our findings reveal CDK9 as a potential target for anti-TNF-resistant IBD, which has the potential for rapid translation to the clinic.
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Affiliation(s)
- Omer S. Omer
- School of Immunology and Microbial Sciences, King's College London, London, UK,National Institute for Health Research Biomedical Research Centre at Guy’s and St Thomas’ NHS Foundation Trust and King’s College, London, UK
| | - Arnulf Hertweck
- UCL Cancer Institute and CRUK City of London Centre, University College London, London, UK
| | - Luke B. Roberts
- School of Immunology and Microbial Sciences, King's College London, London, UK
| | - Jonathan W. Lo
- School of Immunology and Microbial Sciences, King's College London, London, UK,Division of Digestive Diseases, Faculty of Medicine, Imperial College, London, UK
| | - Jennie N. Clough
- National Institute for Health Research Biomedical Research Centre at Guy’s and St Thomas’ NHS Foundation Trust and King’s College, London, UK
| | - Ian Jackson
- School of Immunology and Microbial Sciences, King's College London, London, UK
| | - Eirini D. Pantazi
- School of Immunology and Microbial Sciences, King's College London, London, UK,Kennedy Institute of Rheumatology, University of Oxford, Oxford, UK
| | - Peter M. Irving
- School of Immunology and Microbial Sciences, King's College London, London, UK,Inflammatory Bowel Disease Unit, Department of Gastroenterology, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Tom T. MacDonald
- Centre for Immunobiology, Blizard Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | | | - Richard G. Jenner
- UCL Cancer Institute and CRUK City of London Centre, University College London, London, UK,Correspondence Address correspondence to: Professor Richard G. Jenner, UCL Cancer Institute, University College London, London, WC1E 6DD, UK.
| | - Graham M. Lord
- School of Immunology and Microbial Sciences, King's College London, London, UK,Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK,Professor Graham M. Lord, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, M13 9PL, UK.
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Ranjan A, Pang Y, Butler M, Merchant M, Kim O, Yu G, Su YT, Gilbert MR, Levens D, Wu J. Targeting CDK9 for the Treatment of Glioblastoma. Cancers (Basel) 2021; 13:3039. [PMID: 34207158 PMCID: PMC8234280 DOI: 10.3390/cancers13123039] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 06/15/2021] [Accepted: 06/16/2021] [Indexed: 12/15/2022] Open
Abstract
Glioblastoma is the most common and aggressive primary malignant brain tumor, and more than two-thirds of patients with glioblastoma die within two years of diagnosis. The challenges of treating this disease mainly include genetic and microenvironmental features that often render the tumor resistant to treatments. Despite extensive research efforts, only a small number of drugs tested in clinical trials have become therapies for patients. Targeting cyclin-dependent kinase 9 (CDK9) is an emerging therapeutic approach that has the potential to overcome the challenges in glioblastoma management. Here, we discuss how CDK9 inhibition can impact transcription, metabolism, DNA damage repair, epigenetics, and the immune response to facilitate an anti-tumor response. Moreover, we discuss small-molecule inhibitors of CDK9 in clinical trials and future perspectives on the use of CDK9 inhibitors in treating patients with glioblastoma.
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Affiliation(s)
- Alice Ranjan
- Neuro-Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA; (A.R.); (Y.P.); (M.B.); (M.M.); (O.K.); (G.Y.); (Y.-T.S.); (M.R.G.)
| | - Ying Pang
- Neuro-Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA; (A.R.); (Y.P.); (M.B.); (M.M.); (O.K.); (G.Y.); (Y.-T.S.); (M.R.G.)
| | - Madison Butler
- Neuro-Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA; (A.R.); (Y.P.); (M.B.); (M.M.); (O.K.); (G.Y.); (Y.-T.S.); (M.R.G.)
| | - Mythili Merchant
- Neuro-Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA; (A.R.); (Y.P.); (M.B.); (M.M.); (O.K.); (G.Y.); (Y.-T.S.); (M.R.G.)
| | - Olga Kim
- Neuro-Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA; (A.R.); (Y.P.); (M.B.); (M.M.); (O.K.); (G.Y.); (Y.-T.S.); (M.R.G.)
| | - Guangyang Yu
- Neuro-Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA; (A.R.); (Y.P.); (M.B.); (M.M.); (O.K.); (G.Y.); (Y.-T.S.); (M.R.G.)
| | - Yu-Ting Su
- Neuro-Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA; (A.R.); (Y.P.); (M.B.); (M.M.); (O.K.); (G.Y.); (Y.-T.S.); (M.R.G.)
| | - Mark R. Gilbert
- Neuro-Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA; (A.R.); (Y.P.); (M.B.); (M.M.); (O.K.); (G.Y.); (Y.-T.S.); (M.R.G.)
| | - David Levens
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA;
| | - Jing Wu
- Neuro-Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA; (A.R.); (Y.P.); (M.B.); (M.M.); (O.K.); (G.Y.); (Y.-T.S.); (M.R.G.)
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Abstract
Cyclin Dependent Kinase 9 (CDK9) is one of the most important transcription regulatory members of the CDK family. In conjunction with its main cyclin partner-Cyclin T1, it forms the Positive Transcription Elongation Factor b (P-TEFb) whose primary function in eukaryotic cells is to mediate the positive transcription elongation of nascent mRNA strands, by phosphorylating the S2 residues of the YSPTSPS tandem repeats at the C-terminus domain (CTD) of RNA Polymerase II (RNAP II). To aid in this process, P-TEFb also simultaneously phosphorylates and inactivates a number of negative transcription regulators like 5,6-dichloro-1-β-D-ribofuranosylbenzimidazole (DRB) Sensitivity-Inducing Factor (DSIF) and Negative Elongation Factor (NELF). Significantly enhanced activity of CDK9 is observed in multiple cancer types, which is universally associated with significantly shortened Overall Survival (OS) of the patients. In these cancer types, CDK9 regulates a plethora of cellular functions including proliferation, survival, cell cycle regulation, DNA damage repair and metastasis. Due to the extremely critical role of CDK9 in cancer cells, inhibiting its functions has been the subject of intense research, resulting the development of multiple, increasingly specific small-molecule inhibitors, some of which are presently in clinical trials. The search for newer generation CDK9 inhibitors with higher specificity and lower potential toxicities and suitable combination therapies continues. In fact, the Phase I clinical trials of the latest, highly specific CDK9 inhibitor BAY1251152, against different solid tumors have shown good anti-tumor and on-target activities and pharmacokinetics, combined with manageable safety profile while the phase I and II clinical trials of another inhibitor AT-7519 have been undertaken or are undergoing. To enhance the effectiveness and target diversity and reduce potential drug-resistance, the future of CDK9 inhibition would likely involve combining CDK9 inhibitors with inhibitors like those against BRD4, SEC, MYC, MCL-1 and HSP90.
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Affiliation(s)
- Ranadip Mandal
- Department of Gynecology and Obstetrics, Johann Wolfgang Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany; (R.M.); (S.B.)
| | - Sven Becker
- Department of Gynecology and Obstetrics, Johann Wolfgang Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany; (R.M.); (S.B.)
| | - Klaus Strebhardt
- Department of Gynecology and Obstetrics, Johann Wolfgang Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany; (R.M.); (S.B.)
- German Cancer Consortium (DKTK), 69120 Heidelberg, Germany
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Riess C, Irmscher N, Salewski I, Strüder D, Classen CF, Große-Thie C, Junghanss C, Maletzki C. Cyclin-dependent kinase inhibitors in head and neck cancer and glioblastoma-backbone or add-on in immune-oncology? Cancer Metastasis Rev 2021; 40:153-171. [PMID: 33161487 PMCID: PMC7897202 DOI: 10.1007/s10555-020-09940-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 10/26/2020] [Indexed: 12/11/2022]
Abstract
Cyclin-dependent kinases (CDK) control the cell cycle and play a crucial role in oncogenesis. Pharmacologic inhibition of CDK has contributed to the recent clinical approval of dual CDK4/6 inhibitors for the treatment of breast and small cell lung cancer. While the anticancer cell effects of CDK inhibitors are well-established, preclinical and early clinical studies describe additional mechanisms of action such as chemo- and radiosensitization or immune stimulation. The latter offers great potential to incorporate CDK inhibitors in immune-based treatments. However, dosing schedules and accurate timing of each combination partner need to be respected to prevent immune escape and resistance. In this review, we provide a detailed summary of CDK inhibitors in the two solid cancer types head and neck cancer and glioblastoma multiforme; it describes the molecular mechanisms of response vs. resistance and covers strategies to avoid resistance by the combination of immunotherapy or targeted therapy.
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Affiliation(s)
- Christin Riess
- Department of Medicine, Clinic III - Hematology, Oncology and Palliative Care, Rostock University Medical Center, Rostock, Germany
- University Children's and Adolescents' Hospital, Rostock University Medical Center, Rostock, Germany
| | - Nina Irmscher
- Department of Medicine, Clinic III - Hematology, Oncology and Palliative Care, Rostock University Medical Center, Rostock, Germany
| | - Inken Salewski
- Department of Medicine, Clinic III - Hematology, Oncology and Palliative Care, Rostock University Medical Center, Rostock, Germany
| | - Daniel Strüder
- Department of Oto-Rhino-Laryngology, Head and Neck Surgery "Otto Körner", Rostock University Medical Center, Rostock, Germany
| | - Carl-Friedrich Classen
- University Children's and Adolescents' Hospital, Rostock University Medical Center, Rostock, Germany
| | - Christina Große-Thie
- Department of Medicine, Clinic III - Hematology, Oncology and Palliative Care, Rostock University Medical Center, Rostock, Germany
| | - Christian Junghanss
- Department of Medicine, Clinic III - Hematology, Oncology and Palliative Care, Rostock University Medical Center, Rostock, Germany
| | - Claudia Maletzki
- Department of Medicine, Clinic III - Hematology, Oncology and Palliative Care, Rostock University Medical Center, Rostock, Germany.
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Mologni L, Marzaro G, Redaelli S, Zambon A. Dual Kinase Targeting in Leukemia. Cancers (Basel) 2021; 13:cancers13010119. [PMID: 33401428 PMCID: PMC7796318 DOI: 10.3390/cancers13010119] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 12/23/2020] [Accepted: 12/28/2020] [Indexed: 12/13/2022] Open
Abstract
Simple Summary A new option to treat cancer is based on the use of so-called multi-targeting drugs. This strategy can replace the standard treatment based on the co-administration of several drugs. An increased and uncontrolled activity of kinases (enzymes devoted to the regulation of several cell pathways) is often seen in hematological malignancies. The development of multi-kinase inhibitors is having a great impact on the treatment of this kind of cancer. Here, we review the most recent findings on this novel class of drugs. Abstract Pharmacological cancer therapy is often based on the concurrent inhibition of different survival pathways to improve treatment outcomes and to reduce the risk of relapses. While this strategy is traditionally pursued only through the co-administration of several drugs, the recent development of multi-targeting drugs (i.e., compounds intrinsically able to simultaneously target several macromolecules involved in cancer onset) has had a dramatic impact on cancer treatment. This review focuses on the most recent developments in dual-kinase inhibitors used in acute myeloid leukemia (AML), chronic myelogenous leukemia (CML), and lymphoid tumors, giving details on preclinical studies as well as ongoing clinical trials. A brief overview of dual-targeting inhibitors (kinase/histone deacetylase (HDAC) and kinase/tubulin polymerization inhibitors) applied to leukemia is also given. Finally, the very recently developed Proteolysis Targeting Chimeras (PROTAC)-based kinase inhibitors are presented.
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Affiliation(s)
- Luca Mologni
- Department of Medicine and Surgery, University of Milano-Bicocca, 20900 Monza, Italy; (L.M.); (S.R.)
| | - Giovanni Marzaro
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, via Marzolo 5, I-35131 Padova, Italy;
| | - Sara Redaelli
- Department of Medicine and Surgery, University of Milano-Bicocca, 20900 Monza, Italy; (L.M.); (S.R.)
| | - Alfonso Zambon
- Department of Chemistry and Geological Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy
- Correspondence: ; Tel.: +39-059-2058-640
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Reed DR, Alexandrow MG. Myc and the Replicative CMG Helicase: The Creation and Destruction of Cancer: Myc Over-Activation of CMG Helicases Drives Tumorigenesis and Creates a Vulnerability in CMGs for Therapeutic Intervention. Bioessays 2020; 42:e1900218. [PMID: 32080866 PMCID: PMC8223603 DOI: 10.1002/bies.201900218] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 01/23/2020] [Indexed: 12/27/2022]
Abstract
Myc-driven tumorigenesis involves a non-transcriptional role for Myc in over-activating replicative Cdc45-MCM-GINS (CMG) helicases. Excessive stimulation of CMG helicases by Myc mismanages CMG function by diminishing the number of reserve CMGs necessary for fidelity of DNA replication and recovery from replicative stresses. One potential outcome of these events is the creation of DNA damage that alters genomic structure/function, thereby acting as a driver for tumorigenesis and tumor heterogeneity. Intriguingly, another potential outcome of this Myc-induced CMG helicase over-activation is the creation of a vulnerability in cancer whereby tumor cells specifically lack enough unused reserve CMG helicases to recover from fork-stalling drugs commonly used in chemotherapy. This review provides molecular and clinical support for this provocative hypothesis that excessive activation of CMG helicases by Myc may not only drive tumorigenesis, but also confer an exploitable "reserve CMG helicase vulnerability" that supports developing innovative CMG-focused therapeutic approaches for cancer management.
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Affiliation(s)
- Damon R Reed
- Department of Interdisciplinary Cancer Management, Moffitt Cancer Center and Research Institute, Tampa, FL, 33612, USA
| | - Mark G Alexandrow
- Department of Molecular Oncology, Moffitt Cancer Center and Research Institute, Tampa, FL, 33612, USA
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