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Chowdhury MAN, Wang SW, Suen CS, Hwang MJ, Hsueh YA, Shieh SY. JAK2-CHK2 signaling safeguards the integrity of the mitotic spindle assembly checkpoint and genome stability. Cell Death Dis 2022; 13:619. [PMID: 35851582 PMCID: PMC9293949 DOI: 10.1038/s41419-022-05077-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 07/05/2022] [Accepted: 07/06/2022] [Indexed: 01/21/2023]
Abstract
Checkpoint kinase 2 (CHK2) plays an important role in safeguarding the mitotic progression, specifically the spindle assembly, though the mechanism of regulation remains poorly understood. Here, we identified a novel mitotic phosphorylation site on CHK2 Tyr156, and its responsible kinase JAK2. Expression of a phospho-deficient mutant CHK2 Y156F or treatment with JAK2 inhibitor IV compromised mitotic spindle assembly, leading to genome instability. In contrast, a phospho-mimicking mutant CHK2 Y156E restored mitotic normalcy in JAK2-inhibited cells. Mechanistically, we show that this phosphorylation is required for CHK2 interaction with and phosphorylation of the spindle assembly checkpoint (SAC) kinase Mps1, and failure of which results in impaired Mps1 kinetochore localization and defective SAC. Concordantly, analysis of clinical cancer datasets revealed that deletion of JAK2 is associated with increased genome alteration; and alteration in CHEK2 and JAK2 is linked to preferential deletion or amplification of cancer-related genes. Thus, our findings not only reveal a novel JAK2-CHK2 signaling axis that maintains genome integrity through SAC but also highlight the potential impact on genomic stability with clinical JAK2 inhibition.
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Affiliation(s)
- Md Al Nayem Chowdhury
- grid.260539.b0000 0001 2059 7017Taiwan International Graduate Program in Molecular Medicine, National Yang Ming Chiao Tung University and Academia Sinica, Taipei, Taiwan ,grid.28665.3f0000 0001 2287 1366Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Shih-Wei Wang
- grid.28665.3f0000 0001 2287 1366Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Ching-Shu Suen
- grid.28665.3f0000 0001 2287 1366Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Ming-Jing Hwang
- grid.28665.3f0000 0001 2287 1366Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Yi-An Hsueh
- grid.28665.3f0000 0001 2287 1366Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Sheau-Yann Shieh
- grid.260539.b0000 0001 2059 7017Taiwan International Graduate Program in Molecular Medicine, National Yang Ming Chiao Tung University and Academia Sinica, Taipei, Taiwan ,grid.28665.3f0000 0001 2287 1366Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
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2
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Nelson KN, Meyer AN, Wang CG, Donoghue DJ. Oncogenic driver FGFR3-TACC3 is dependent on membrane trafficking and ERK signaling. Oncotarget 2018; 9:34306-34319. [PMID: 30344944 PMCID: PMC6188140 DOI: 10.18632/oncotarget.26142] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 09/08/2018] [Indexed: 12/30/2022] Open
Abstract
Fusion proteins resulting from chromosomal translocations have been identified as oncogenic drivers in many cancers, allowing them to serve as potential drug targets in clinical practice. The genes encoding FGFRs, Fibroblast Growth Factor Receptors, are commonly involved in such translocations, with the FGFR3-TACC3 fusion protein frequently identified in many cancers, including glioblastoma, cervical cancer, bladder cancer, nasopharyngeal carcinoma, and lung adenocarcinoma among others. FGFR3-TACC3 retains the entire extracellular domain and most of the kinase domain of FGFR3, with its C-terminal domain fused to TACC3. We examine here the effects of targeting FGFR3-TACC3 to different subcellular localizations by appending either a nuclear localization signal (NLS) or a myristylation signal, or by deletion of the normal signal sequence. We demonstrate that the oncogenic effects of FGFR3-TACC3 require either entrance to the secretory pathway or plasma membrane localization, leading to overactivation of canonical MAPK/ERK pathways. We also examined the effects of different translocation breakpoints in FGFR3-TACC3, comparing fusion at TACC3 exon 11 with fusion at exon 8. Transformation resulting from FGFR3-TACC3 was not affected by association with the canonical TACC3-interacting proteins Aurora-A, clathrin, and ch-TOG. We have shown that kinase inhibitors for MEK (Trametinib) and FGFR (BGJ398) are effective in blocking cell transformation and MAPK pathway upregulation. The development of personalized medicines will be essential in treating patients who harbor oncogenic drivers such as FGFR3-TACC3.
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Affiliation(s)
- Katelyn N Nelson
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California, USA
| | - April N Meyer
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California, USA
| | - Clark G Wang
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California, USA
| | - Daniel J Donoghue
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California, USA.,UCSD Moores Cancer Center and University of California San Diego, La Jolla, California, USA
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3
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Airik R, Schueler M, Airik M, Cho J, Ulanowicz KA, Porath JD, Hurd TW, Bekker-Jensen S, Schrøder JM, Andersen JS, Hildebrandt F. SDCCAG8 Interacts with RAB Effector Proteins RABEP2 and ERC1 and Is Required for Hedgehog Signaling. PLoS One 2016; 11:e0156081. [PMID: 27224062 PMCID: PMC4880186 DOI: 10.1371/journal.pone.0156081] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2015] [Accepted: 05/09/2016] [Indexed: 12/29/2022] Open
Abstract
Recessive mutations in the SDCCAG8 gene cause a nephronophthisis-related ciliopathy with Bardet-Biedl syndrome-like features in humans. Our previous characterization of the orthologous Sdccag8gt/gt mouse model recapitulated the retinal-renal disease phenotypes and identified impaired DNA damage response signaling as an underlying disease mechanism in the kidney. However, several other phenotypic and mechanistic features of Sdccag8gt/gt mice remained unexplored. Here we show that Sdccag8gt/gt mice exhibit developmental and structural abnormalities of the skeleton and limbs, suggesting impaired Hedgehog (Hh) signaling. Indeed, cell culture studies demonstrate the requirement of SDCCAG8 for ciliogenesis and Hh signaling. Using an affinity proteomics approach, we demonstrate that SDCCAG8 interacts with proteins of the centriolar satellites (OFD1, AZI1), of the endosomal sorting complex (RABEP2, ERC1), and with non-muscle myosin motor proteins (MYH9, MYH10, MYH14) at the centrosome. Furthermore, we show that RABEP2 localization at the centrosome is regulated by SDCCAG8. siRNA mediated RABEP2 knockdown in hTERT-RPE1 cells leads to defective ciliogenesis, indicating a critical role for RABEP2 in this process. Together, this study identifies several centrosome-associated proteins as novel SDCCAG8 interaction partners, and provides new insights into the function of SDCCAG8 at this structure.
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Affiliation(s)
- Rannar Airik
- Department of Medicine, Division of Nephrology, Boston Children’s Hospital, Boston, Massachusetts, United States of America
- * E-mail: (RA); (FH)
| | - Markus Schueler
- Department of Medicine, Division of Nephrology, Boston Children’s Hospital, Boston, Massachusetts, United States of America
| | - Merlin Airik
- Department of Medicine, Division of Nephrology, Boston Children’s Hospital, Boston, Massachusetts, United States of America
| | - Jang Cho
- Department of Medicine, Division of Nephrology, Boston Children’s Hospital, Boston, Massachusetts, United States of America
| | - Kelsey A. Ulanowicz
- Department of Pediatrics, Division of Nephrology, Children’s Hospital of Pittsburgh of UPMC, Pittsburgh, Pennsylvania, United States of America
| | - Jonathan D. Porath
- Department of Medicine, Division of Nephrology, Boston Children’s Hospital, Boston, Massachusetts, United States of America
| | - Toby W. Hurd
- Medical Research Council Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - Simon Bekker-Jensen
- NNF Center for Protein Research, University of Copenhagen, Faculty of Health Sciences, Copenhagen, Denmark
| | - Jacob M. Schrøder
- Department of Biochemistry and Molecular Biology; University of Southern Denmark, Odense M, Denmark
| | - Jens S. Andersen
- Department of Biochemistry and Molecular Biology; University of Southern Denmark, Odense M, Denmark
| | - Friedhelm Hildebrandt
- Department of Medicine, Division of Nephrology, Boston Children’s Hospital, Boston, Massachusetts, United States of America
- Howard Hughes Medical Institute, Chevy Chase, Maryland, United States of America
- * E-mail: (RA); (FH)
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Agircan FG, Schiebel E. Sensors at centrosomes reveal determinants of local separase activity. PLoS Genet 2014; 10:e1004672. [PMID: 25299182 PMCID: PMC4191886 DOI: 10.1371/journal.pgen.1004672] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Accepted: 08/14/2014] [Indexed: 01/08/2023] Open
Abstract
Separase is best known for its function in sister chromatid separation at the metaphase-anaphase transition. It also has a role in centriole disengagement in late mitosis/G1. To gain insight into the activity of separase at centrosomes, we developed two separase activity sensors: mCherry-Scc1(142-467)-ΔNLS-eGFP-PACT and mCherry-kendrin(2059-2398)-eGFP-PACT. Both localize to the centrosomes and enabled us to monitor local separase activity at the centrosome in real time. Both centrosomal sensors were cleaved by separase before anaphase onset, earlier than the corresponding H2B-mCherry-Scc1(142-467)-eGFP sensor at chromosomes. This indicates that substrate cleavage by separase is not synchronous in the cells. Depletion of the proteins astrin or Aki1, which have been described as inhibitors of centrosomal separase, did not led to a significant activation of separase at centrosomes, emphasizing the importance of direct separase activity measurements at the centrosomes. Inhibition of polo-like kinase Plk1, on the other hand, decreased the separase activity towards the Scc1 but not the kendrin reporter. Together these findings indicate that Plk1 regulates separase activity at the level of substrate affinity at centrosomes and may explain in part the role of Plk1 in centriole disengagement.
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Affiliation(s)
- Fikret Gurkan Agircan
- Zentrum für Molekulare Biologie der Universität Heidelberg, DKFZ-ZMBH Allianz, Heidelberg, Germany
| | - Elmar Schiebel
- Zentrum für Molekulare Biologie der Universität Heidelberg, DKFZ-ZMBH Allianz, Heidelberg, Germany
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Gosenca D, Kellert B, Metzgeroth G, Haferlach C, Fabarius A, Schwaab J, Kneba M, Scheid C, Töpelt K, Erben P, Haferlach T, Cross NCP, Hofmann WK, Seifarth W, Reiter A. Identification and functional characterization of imatinib-sensitive DTD1-PDGFRB and CCDC88C-PDGFRB fusion genes in eosinophilia-associated myeloid/lymphoid neoplasms. Genes Chromosomes Cancer 2014; 53:411-21. [PMID: 24772479 DOI: 10.1002/gcc.22153] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Eosinophilia-associated myeloid neoplasms with rearrangement of chromosome bands 5q31-33 are frequently associated with PDGFRB fusion genes, which are exquisitely sensitive to treatment with imatinib. In search for novel fusion partners of PDGFRB, we analyzed three cases with translocation t(5;20)(q33;p11), t(5;14)(q33;q32), and t(5;17;14)(q33;q11;q32) by 5′-rapid amplification of cDNA ends polymerase chain reaction (5′-RACE-PCR) and DNA-based long-distance inverse PCR (LDI-PCR) with primers derived from PDGFRB. LDI-PCR revealed a fusion between CCDC88C exon 25 and PDGFRB exon 11 in the case with t(5;17;14)(q33;q11;q32) while 5′-RACE-PCR identified fusions between CCDC88C exon 10 and PDGFRB exon 12 and between DTD1 exon 4 and PDGFRB exon 12 in the cases with t(5;14)(q33;q32) and t(5;20)(q33;p11), respectively. The PDGFRB tyrosine-kinase domain is predicted to be retained in all three fusion proteins. The partner proteins contained coiled-coil domains or other domains, which putatively lead to constitutive activation of the PDGFRB fusion protein. In vitro functional analyses confirmed transforming activity and imatinib-sensitivity of the fusion proteins. All three patients achieved rapid and durable complete hematologic remissions on imatinib.
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6
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Lee JY, Hong WJ, Majeti R, Stearns T. Centrosome-kinase fusions promote oncogenic signaling and disrupt centrosome function in myeloproliferative neoplasms. PLoS One 2014; 9:e92641. [PMID: 24658090 PMCID: PMC3962438 DOI: 10.1371/journal.pone.0092641] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Accepted: 02/17/2014] [Indexed: 11/18/2022] Open
Abstract
Chromosomal translocations observed in myeloproliferative neoplasms (MPNs) frequently fuse genes that encode centrosome proteins and tyrosine kinases. This causes constitutive activation of the kinase resulting in aberrant, proliferative signaling. The function of centrosome proteins in these fusions is not well understood. Among others, kinase centrosome localization and constitutive kinase dimerization are possible consequences of centrosome protein-kinase fusions. To test the relative contributions of localization and dimerization on kinase signaling, we targeted inducibly dimerizable FGFR1 to the centrosome and other subcellular locations and generated a mutant of the FOP-FGFR1 MPN fusion defective in centrosome localization. Expression in mammalian cells followed by western blot analysis revealed a significant decrease in kinase signaling upon loss of FOP-FGFR1 centrosome localization. Kinase dimerization alone resulted in phosphorylation of the FGFR1 signaling target PLCγ, however levels comparable to FOP-FGFR1 required subcellular targeting in addition to kinase dimerization. Expression of MPN fusion proteins also resulted in centrosome disruption in epithelial cells and transformed patient cells. Primary human MPN cells showed masses of modified tubulin that colocalized with centrin, Smoothened (Smo), IFT88, and Arl13b. This is distinct from acute myeloid leukemia (AML) cells, which are not associated with centrosome-kinase fusions and had normal centrosomes. Our results suggest that effective proliferative MPN signaling requires both subcellular localization and dimerization of MPN kinases, both of which may be provided by centrosome protein fusion partners. Furthermore, centrosome disruption may contribute to the MPN transformation phenotype.
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Affiliation(s)
- Joanna Y Lee
- Department of Biology, Stanford University, Stanford, California, United States of America
| | - Wan-Jen Hong
- Stanford Institute for Stem Cell Biology and Regenerative Medicine and Cancer Institute, Stanford University School of Medicine, Stanford, California, United States of America; Department of Medicine, Division of Hematology, Stanford University School of Medicine, Stanford, California, United States of America
| | - Ravindra Majeti
- Stanford Institute for Stem Cell Biology and Regenerative Medicine and Cancer Institute, Stanford University School of Medicine, Stanford, California, United States of America; Department of Medicine, Division of Hematology, Stanford University School of Medicine, Stanford, California, United States of America
| | - Tim Stearns
- Department of Biology, Stanford University, Stanford, California, United States of America; Department of Genetics, Stanford School of Medicine, Stanford, California, United States of America
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7
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Ehrentraut S, Nagel S, Scherr ME, Schneider B, Quentmeier H, Geffers R, Kaufmann M, Meyer C, Prochorec-Sobieszek M, Ketterling RP, Knudson RA, Feldman AL, Kadin ME, Drexler HG, MacLeod RAF. t(8;9)(p22;p24)/PCM1-JAK2 activates SOCS2 and SOCS3 via STAT5. PLoS One 2013; 8:e53767. [PMID: 23372669 PMCID: PMC3553112 DOI: 10.1371/journal.pone.0053767] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Accepted: 12/04/2012] [Indexed: 12/03/2022] Open
Abstract
Fusions of the tyrosine kinase domain of JAK2 with multiple partners occur in leukemia/lymphoma where they reportedly promote JAK2-oligomerization and autonomous signalling, Affected entities are promising candidates for therapy with JAK2 signalling inhibitors. While JAK2-translocations occur in myeloid, B-cell and T-cell lymphoid neoplasms, our findings suggest their incidence among the last group is low. Here we describe the genomic, transcriptional and signalling characteristics of PCM1-JAK2 formed by t(8;9)(p22;p24) in a trio of cell lines established at indolent (MAC-1) and aggressive (MAC-2A/2B) phases of a cutaneous T-cell lymphoma (CTCL). To investigate signalling, PCM1-JAK2 was subjected to lentiviral knockdown which inhibited 7 top upregulated genes in t(8;9) cells, notably SOCS2/3. SOCS3, but not SOCS2, was also upregulated in a chronic eosinophilic leukemia bearing PCM1-JAK2, highlighting its role as a central signalling target of JAK2 translocation neoplasia. Conversely, expression of GATA3, a key T-cell developmental gene silenced in aggressive lymphoma cells, was partially restored by PCM1-JAK2 knockdown. Treatment with a selective JAK2 inhibitor (TG101348) to which MAC-1/2A/2B cells were conspicuously sensitive confirmed knockdown results and highlighted JAK2 as the active moiety. PCM1-JAK2 signalling required pSTAT5, supporting a general paradigm of STAT5 activation by JAK2 alterations in lymphoid malignancies. MAC-1/2A/2B - the first JAK2–translocation leukemia/lymphoma cell lines described - display conspicuous JAK/STAT signalling accompanied by T-cell developmental and autoimmune disease gene expression signatures, confirming their fitness as CTCL disease models. Our data support further investigation of SOCS2/3 as signalling effectors, prognostic indicators and potential therapeutic targets in cancers with JAK2 rearrangements.
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MESH Headings
- Cell Line, Tumor
- Chromosomes, Human, Pair 8
- Chromosomes, Human, Pair 9
- GATA3 Transcription Factor/genetics
- GATA3 Transcription Factor/metabolism
- Gene Expression Regulation, Neoplastic/drug effects
- Gene Silencing
- Genetic Vectors
- Humans
- Lentivirus/genetics
- Lymphoma, T-Cell, Cutaneous/genetics
- Lymphoma, T-Cell, Cutaneous/metabolism
- Lymphoma, T-Cell, Cutaneous/pathology
- Oncogene Proteins, Fusion/antagonists & inhibitors
- Oncogene Proteins, Fusion/genetics
- Oncogene Proteins, Fusion/metabolism
- Protein Kinase Inhibitors/pharmacology
- Pyrrolidines/pharmacology
- STAT5 Transcription Factor/genetics
- STAT5 Transcription Factor/metabolism
- Signal Transduction/drug effects
- Skin Neoplasms/genetics
- Skin Neoplasms/metabolism
- Skin Neoplasms/pathology
- Sulfonamides/pharmacology
- Suppressor of Cytokine Signaling 3 Protein
- Suppressor of Cytokine Signaling Proteins/agonists
- Suppressor of Cytokine Signaling Proteins/genetics
- Suppressor of Cytokine Signaling Proteins/metabolism
- Translocation, Genetic
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Affiliation(s)
- Stefan Ehrentraut
- Leibniz Institute, DSMZ - German Collection of Microorganisms and Cell Cultures, Department of Human and Animal Cell Cultures, Braunschweig, Germany
| | - Stefan Nagel
- Leibniz Institute, DSMZ - German Collection of Microorganisms and Cell Cultures, Department of Human and Animal Cell Cultures, Braunschweig, Germany
| | - Michaela E. Scherr
- Department of Hematology, Hemostasis, Oncology, and Stem Cell Transplantation, Medical School Hannover, Hannover, Germany
| | - Björn Schneider
- University of Rostock, Institute of Pathology and Molecular Pathology, Rostock, Germany
| | - Hilmar Quentmeier
- Leibniz Institute, DSMZ - German Collection of Microorganisms and Cell Cultures, Department of Human and Animal Cell Cultures, Braunschweig, Germany
| | - Robert Geffers
- Department of Genome Analysis, HZI-Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Maren Kaufmann
- Leibniz Institute, DSMZ - German Collection of Microorganisms and Cell Cultures, Department of Human and Animal Cell Cultures, Braunschweig, Germany
| | - Corinna Meyer
- Leibniz Institute, DSMZ - German Collection of Microorganisms and Cell Cultures, Department of Human and Animal Cell Cultures, Braunschweig, Germany
| | | | - Rhett P. Ketterling
- College of Medicine, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Ryan A. Knudson
- College of Medicine, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Andrew L. Feldman
- College of Medicine, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Marshall E. Kadin
- Boston University School of Medicine, Department of Dermatology and Skin Surgery, Roger Williams Medical Center, Providence, Rhode Island, United States of America
| | - Hans G. Drexler
- Leibniz Institute, DSMZ - German Collection of Microorganisms and Cell Cultures, Department of Human and Animal Cell Cultures, Braunschweig, Germany
| | - Roderick A. F. MacLeod
- Leibniz Institute, DSMZ - German Collection of Microorganisms and Cell Cultures, Department of Human and Animal Cell Cultures, Braunschweig, Germany
- * E-mail:
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