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Landry-Voyer AM, Mir Hassani Z, Avino M, Bachand F. Ribosomal Protein uS5 and Friends: Protein-Protein Interactions Involved in Ribosome Assembly and Beyond. Biomolecules 2023; 13:biom13050853. [PMID: 37238722 DOI: 10.3390/biom13050853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 05/15/2023] [Accepted: 05/16/2023] [Indexed: 05/28/2023] Open
Abstract
Ribosomal proteins are fundamental components of the ribosomes in all living cells. The ribosomal protein uS5 (Rps2) is a stable component of the small ribosomal subunit within all three domains of life. In addition to its interactions with proximal ribosomal proteins and rRNA inside the ribosome, uS5 has a surprisingly complex network of evolutionarily conserved non-ribosome-associated proteins. In this review, we focus on a set of four conserved uS5-associated proteins: the protein arginine methyltransferase 3 (PRMT3), the programmed cell death 2 (PDCD2) and its PDCD2-like (PDCD2L) paralog, and the zinc finger protein, ZNF277. We discuss recent work that presents PDCD2 and homologs as a dedicated uS5 chaperone and PDCD2L as a potential adaptor protein for the nuclear export of pre-40S subunits. Although the functional significance of the PRMT3-uS5 and ZNF277-uS5 interactions remain elusive, we reflect on the potential roles of uS5 arginine methylation by PRMT3 and on data indicating that ZNF277 and PRMT3 compete for uS5 binding. Together, these discussions highlight the complex and conserved regulatory network responsible for monitoring the availability and the folding of uS5 for the formation of 40S ribosomal subunits and/or the role of uS5 in potential extra-ribosomal functions.
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Affiliation(s)
- Anne-Marie Landry-Voyer
- Dept of Biochemistry & Functional Genomics, Université de Sherbrooke, Sherbrooke, QC J1E 4K8, Canada
| | - Zabih Mir Hassani
- Dept of Biochemistry & Functional Genomics, Université de Sherbrooke, Sherbrooke, QC J1E 4K8, Canada
| | - Mariano Avino
- Dept of Biochemistry & Functional Genomics, Université de Sherbrooke, Sherbrooke, QC J1E 4K8, Canada
| | - François Bachand
- Dept of Biochemistry & Functional Genomics, Université de Sherbrooke, Sherbrooke, QC J1E 4K8, Canada
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Abbas MN, Liang H, Kausar S, Dong Z, Cui H. Zinc finger protein RP-8, the Bombyx mori ortholog of programmed cell death 2, regulates cell proliferation. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2020; 104:103542. [PMID: 31730828 DOI: 10.1016/j.dci.2019.103542] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 11/11/2019] [Accepted: 11/11/2019] [Indexed: 06/10/2023]
Abstract
Programmed cell death 2 (PDCD2) is a highly conserved eukaryotic protein indispensable for various physiological processes such as cell proliferation, development, and apoptosis. In the present study, we identified a Zinc finger protein RP-8 from the silkworm, Bombyx mori (BmZfrp8), the ortholog of PDCD2 protein. The quantitative real-time PCR analysis revealed the ubiquitous distribution of BmZfrp8 in the different tissues; however, the gene's transcription level was highest in those of the silk gland, testis, and ovary. Additionally, the expression levels of BmZfrp8 were unequal on different days of embryonic development, and it reached the highest level on the 5th day of early development. The challenge with pathogens influenced the expression level of BmZfrp8 in both hemocyte and fat body when compared with the control. Administration of 20-hydroxyecdysone significantly enhanced the BmZfrp8 expression in hemocyte. The knock-down of BmZfrp8 by double-stranded RNA suppressed the expression of developmental pathway associated genes as well as cell cycle-associated genes. Furthermore, the RNAi treated cells also showed cell cycle arrest compared to the control group. Taken together, BmZfrp8 may have a critical biological role in of B. mori, since it regulates the expression of the developmental pathway and cell cycle-associated genes.
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Affiliation(s)
- Muhammad Nadeem Abbas
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Beibei, Chongqing, 400715, China; Cancer Center, Medical Research Institute, Southwest University, Beibei, Chongqing, 400715, China.
| | - Hanghua Liang
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Beibei, Chongqing, 400715, China; Cancer Center, Medical Research Institute, Southwest University, Beibei, Chongqing, 400715, China.
| | - Saima Kausar
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Beibei, Chongqing, 400715, China; Cancer Center, Medical Research Institute, Southwest University, Beibei, Chongqing, 400715, China.
| | - Zhen Dong
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Beibei, Chongqing, 400715, China; Cancer Center, Medical Research Institute, Southwest University, Beibei, Chongqing, 400715, China.
| | - Hongjuan Cui
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Beibei, Chongqing, 400715, China; Cancer Center, Medical Research Institute, Southwest University, Beibei, Chongqing, 400715, China.
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Bansal N, Bartucci M, Yusuff S, Davis S, Flaherty K, Huselid E, Patrizii M, Jones D, Cao L, Sydorenko N, Moon YC, Zhong H, Medina DJ, Kerrigan J, Stein MN, Kim IY, Davis TW, DiPaola RS, Bertino JR, Sabaawy HE. BMI-1 Targeting Interferes with Patient-Derived Tumor-Initiating Cell Survival and Tumor Growth in Prostate Cancer. Clin Cancer Res 2016; 22:6176-6191. [PMID: 27307599 DOI: 10.1158/1078-0432.ccr-15-3107] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 05/19/2016] [Accepted: 05/24/2016] [Indexed: 12/16/2022]
Abstract
PURPOSE Current prostate cancer management calls for identifying novel and more effective therapies. Self-renewing tumor-initiating cells (TICs) hold intrinsic therapy resistance and account for tumor relapse and progression. As BMI-1 regulates stem cell self-renewal, impairing BMI-1 function for TIC-tailored therapies appears to be a promising approach. EXPERIMENTAL DESIGN We have previously developed a combined immunophenotypic and time-of-adherence assay to identify CD49bhiCD29hiCD44hi cells as human prostate TICs. We utilized this assay with patient-derived prostate cancer cells and xenograft models to characterize the effects of pharmacologic inhibitors of BMI-1. RESULTS We demonstrate that in cell lines and patient-derived TICs, BMI-1 expression is upregulated and associated with stem cell-like traits. From a screened library, we identified a number of post-transcriptional small molecules that target BMI-1 in prostate TICs. Pharmacologic inhibition of BMI-1 in patient-derived cells significantly decreased colony formation in vitro and attenuated tumor initiation in vivo, thereby functionally diminishing the frequency of TICs, particularly in cells resistant to proliferation- and androgen receptor-directed therapies, without toxic effects on normal tissues. CONCLUSIONS Our data offer a paradigm for targeting TICs and support the development of BMI-1-targeting therapy for a more effective prostate cancer treatment. Clin Cancer Res; 22(24); 6176-91. ©2016 AACR.
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Affiliation(s)
- Nitu Bansal
- Rutgers Cancer Institute of New Jersey, Rutgers University, New Brunswick, NJ 08901
| | - Monica Bartucci
- Rutgers Cancer Institute of New Jersey, Rutgers University, New Brunswick, NJ 08901
| | - Shamila Yusuff
- Rutgers Cancer Institute of New Jersey, Rutgers University, New Brunswick, NJ 08901
| | - Stephani Davis
- Graduate Program in Cellular and Molecular Pharmacology, Rutgers University, New Brunswick, NJ 08901
| | - Kathleen Flaherty
- Rutgers Cancer Institute of New Jersey, Rutgers University, New Brunswick, NJ 08901
| | - Eric Huselid
- Graduate Program in Cellular and Molecular Pharmacology, Rutgers University, New Brunswick, NJ 08901
| | - Michele Patrizii
- Graduate Program in Cellular and Molecular Pharmacology, Rutgers University, New Brunswick, NJ 08901
| | - Daniel Jones
- Graduate Program in Cell and Developmental Biology, RBHS-Robert Wood Johnson Medical School, Graduate School of Biomedical Sciences, Rutgers University, New Brunswick, NJ 08901
| | - Liangxian Cao
- PTC Therapeutics, Inc., 100 Corporate CT, South Plainfield, NJ 07080
| | - Nadiya Sydorenko
- PTC Therapeutics, Inc., 100 Corporate CT, South Plainfield, NJ 07080
| | - Young-Choon Moon
- PTC Therapeutics, Inc., 100 Corporate CT, South Plainfield, NJ 07080
| | - Hua Zhong
- Department of Pathology and Laboratory Medicine, Rutgers University, New Brunswick, NJ 08901
| | - Daniel J Medina
- Rutgers Cancer Institute of New Jersey, Rutgers University, New Brunswick, NJ 08901.,Department of Medicine, Rutgers University, New Brunswick, NJ 08901
| | - John Kerrigan
- Rutgers Cancer Institute of New Jersey, Rutgers University, New Brunswick, NJ 08901
| | - Mark N Stein
- Rutgers Cancer Institute of New Jersey, Rutgers University, New Brunswick, NJ 08901.,Department of Medicine, Rutgers University, New Brunswick, NJ 08901
| | - Isaac Y Kim
- Rutgers Cancer Institute of New Jersey, Rutgers University, New Brunswick, NJ 08901.,Department of Surgery, RBHS-Robert Wood Johnson Medical School, Rutgers University, New Brunswick, NJ 08901
| | - Thomas W Davis
- PTC Therapeutics, Inc., 100 Corporate CT, South Plainfield, NJ 07080
| | - Robert S DiPaola
- Rutgers Cancer Institute of New Jersey, Rutgers University, New Brunswick, NJ 08901.,Department of Medicine, Rutgers University, New Brunswick, NJ 08901
| | - Joseph R Bertino
- Rutgers Cancer Institute of New Jersey, Rutgers University, New Brunswick, NJ 08901.,Graduate Program in Cellular and Molecular Pharmacology, Rutgers University, New Brunswick, NJ 08901.,Department of Medicine, Rutgers University, New Brunswick, NJ 08901
| | - Hatem E Sabaawy
- Rutgers Cancer Institute of New Jersey, Rutgers University, New Brunswick, NJ 08901.,Graduate Program in Cellular and Molecular Pharmacology, Rutgers University, New Brunswick, NJ 08901.,Graduate Program in Cell and Developmental Biology, RBHS-Robert Wood Johnson Medical School, Graduate School of Biomedical Sciences, Rutgers University, New Brunswick, NJ 08901.,Department of Medicine, Rutgers University, New Brunswick, NJ 08901
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Burroughs AM, Aravind L. Analysis of two domains with novel RNA-processing activities throws light on the complex evolution of ribosomal RNA biogenesis. Front Genet 2014; 5:424. [PMID: 25566315 PMCID: PMC4275035 DOI: 10.3389/fgene.2014.00424] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Accepted: 11/19/2014] [Indexed: 11/13/2022] Open
Abstract
Ribosomal biogenesis has been extensively investigated, especially to identify the elusive nucleases and cofactors involved in the complex rRNA processing events in eukaryotes. Large-scale screens in yeast identified two biochemically uncharacterized proteins, TSR3 and TSR4, as being key players required for rRNA maturation. Using multiple computational approaches we identify the conserved domains comprising these proteins and establish sequence and structural features providing novel insights regarding their roles. TSR3 is unified with the DTW domain into a novel superfamily of predicted enzymatic domains, with the balance of the available evidence pointing toward an RNase role with the archaeo-eukaryotic TSR3 proteins processing rRNA and the bacterial versions potentially processing tRNA. TSR4, its other eukaryotic homologs PDCD2/rp-8, PDCD2L, Zfrp8, and trus, the predominantly bacterial DUF1963 proteins, and other uncharacterized proteins are unified into a new domain superfamily, which arose from an ancient duplication event of a strand-swapped, dimer-forming all-beta unit. We identify conserved features mediating protein-protein interactions (PPIs) and propose a potential chaperone-like function. While contextual evidence supports a conserved role in ribosome biogenesis for the eukaryotic TSR4-related proteins, there is no evidence for such a role for the bacterial versions. Whereas TSR3-related proteins can be traced to the last universal common ancestor (LUCA) with a well-supported archaeo-eukaryotic branch, TSR4-related proteins of eukaryotes are derived from within the bacterial radiation of this superfamily, with archaea entirely lacking them. This provides evidence for “systems admixture,” which followed the early endosymbiotic event, playing a key role in the emergence of the uniquely eukaryotic ribosome biogenesis process.
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Affiliation(s)
- A Maxwell Burroughs
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health Bethesda, MD, USA
| | - L Aravind
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health Bethesda, MD, USA
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Zhang J, Wei W, Jin HC, Ying RC, Zhu AK, Zhang FJ. Programmed cell death 2 protein induces gastric cancer cell growth arrest at the early S phase of the cell cycle and apoptosis in a p53-dependent manner. Oncol Rep 2014; 33:103-10. [PMID: 25334010 DOI: 10.3892/or.2014.3551] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Accepted: 08/02/2014] [Indexed: 11/06/2022] Open
Abstract
Programmed cell death 2 (PDCD2) is a highly conserved nuclear protein, and aberrant PDCD2 expression alters cell apoptosis. The present study aimed to investigate PDCD2 expression in gastric cancer. Tissue specimens from 34 gastric cancer patients were collected for analysis of PDCD2 expression using immunohistochemistry, western blotting and qRT-PCR. Gastric cancer cell lines (a p53-mutated MKN28 line and a wild-type p53 MKN45 line) were used to assess the effects of PDCD2 overexpression. p53-/- nude mice were used to investigate the effect of PDCD2 on ultraviolet B (UVB)-induced skin carcinogenesis. The data showed that PDCD2 expression was reduced in gastric cancer tissue specimens, and loss of PDCD2 expression was associated with the poor survival of patients. PDCD2 expression induced gastric cancer cell growth arrest at the early S phase of the cell cycle and apoptosis. The antitumor effects of PDCD2 expression were dependent on p53 expression in gastric cancer cells. Moreover, PDCD2 expression inhibited activity of the ATM/Chk1/2/p53 signaling pathway. In addition, PDCD2 expression suppressed UVB-induced skin carcinogenesis in p53+/+ nude mice, but not in p53-/- mice. The data from the present study demonstrated that loss of PDCD2 expression could contribute to gastric cancer development and progression and that PDCD2-induced gastric cancer cell growth arrest at the early S phase of the cell cycle and apoptosis are p53-dependent.
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Affiliation(s)
- Jian Zhang
- Department of Gastroenterological Surgery, Hangzhou First People's Hospital, School of Clinical Medicine, Nanjing Medical University, Hangzhou 310006, P.R. China
| | - Wei Wei
- Department of Gastroenterological Surgery, Hangzhou First People's Hospital, School of Clinical Medicine, Nanjing Medical University, Hangzhou 310006, P.R. China
| | - Hui-Cheng Jin
- Department of Gastroenterological Surgery, Hangzhou First People's Hospital, School of Clinical Medicine, Nanjing Medical University, Hangzhou 310006, P.R. China
| | - Rong-Chao Ying
- Department of Gastroenterological Surgery, Hangzhou First People's Hospital, School of Clinical Medicine, Nanjing Medical University, Hangzhou 310006, P.R. China
| | - A-Kao Zhu
- Department of Gastroenterological Surgery, Hangzhou First People's Hospital, School of Clinical Medicine, Nanjing Medical University, Hangzhou 310006, P.R. China
| | - Fang-Jie Zhang
- Department of Gastroenterological Surgery, Hangzhou First People's Hospital, School of Clinical Medicine, Nanjing Medical University, Hangzhou 310006, P.R. China
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Minakhina S, Changela N, Steward R. Zfrp8/PDCD2 is required in ovarian stem cells and interacts with the piRNA pathway machinery. Development 2014; 141:259-68. [PMID: 24381196 DOI: 10.1242/dev.101410] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The maintenance of stem cells is central to generating diverse cell populations in many tissues throughout the life of an animal. Elucidating the mechanisms involved in how stem cells are formed and maintained is crucial to understanding both normal developmental processes and the growth of many cancers. Previously, we showed that Zfrp8/PDCD2 is essential for the maintenance of Drosophila hematopoietic stem cells. Here, we show that Zfrp8/PDCD2 is also required in both germline and follicle stem cells in the Drosophila ovary. Expression of human PDCD2 fully rescues the Zfrp8 phenotype, underlining the functional conservation of Zfrp8/PDCD2. The piRNA pathway is essential in early oogenesis, and we find that nuclear localization of Zfrp8 in germline stem cells and their offspring is regulated by some piRNA pathway genes. We also show that Zfrp8 forms a complex with the piRNA pathway protein Maelstrom and controls the accumulation of Maelstrom in the nuage. Furthermore, Zfrp8 regulates the activity of specific transposable elements also controlled by Maelstrom and Piwi. Our results suggest that Zfrp8/PDCD2 is not an integral member of the piRNA pathway, but has an overlapping function, possibly competing with Maelstrom and Piwi.
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Affiliation(s)
- Svetlana Minakhina
- Rutgers University, Department of Molecular Biology, Waksman Institute, Cancer Institute of New Jersey, 190 Frelinghuysen Road, Piscataway, NJ 08854, USA
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Barboza N, Minakhina S, Medina DJ, Balsara B, Greenwood S, Huzzy L, Rabson AB, Steward R, Schaar DG. PDCD2 functions in cancer cell proliferation and predicts relapsed leukemia. Cancer Biol Ther 2014; 14:546-55. [PMID: 23760497 DOI: 10.4161/cbt.24484] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
PDCD2 is an evolutionarily conserved eukaryotic protein with unknown function. The Drosophlia PDCD2 ortholog Zfrp8 has an essential function in fly hematopoiesis. Zfrp8 mutants exhibit marked lymph gland hyperplasia that results from increased proliferation of partially differentiated hemocytes, suggesting Zfrp8 may participate in cell growth. Based on the above observations we have focused on the role of PDCD2 in human cancer cell proliferation and hypothesized that aberrant PDCD2 expression may be characteristic of human malignancies. We report that PDCD2 is highly expressed in human acute leukemia cells as well as in normal hematopoietic progenitors. PDCD2 knockdown in cancer cells impairs their proliferation, but not viability relative to parental cells, supporting the notion that PDCD2 overexpression facilitates cancer cell growth. Prospective analysis of PDCD2 in acute leukemia patients indicates PDCD2 RNA expression correlates with disease status and is a significant predictor of clinical relapse. PDCD2's role in cell proliferation and its high expression in human malignancies make it an attractive, novel potential molecular target for new anti-cancer therapies.
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Affiliation(s)
- Nora Barboza
- University of Medicine & Dentistry of New Jersey, Robert Wood Johnson Medical School, The Cancer Institute of New Jersey, New Brunswick, NJ, USA
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Ju SM, Pae HO, Kim WS, Lee CH, Jeon BH. 1-Chloromethyl-6,7-dimethoxy-3,4-dihydro-1H-isoquinoline-2-sulfonic acid amide, a derivative of tetrahydroisoquinoline, induces granulocytic differentiation of the human leukemic HL-60 cells via G0/G1 phase arrest. Health (London) 2013. [DOI: 10.4236/health.2013.55a001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Kramer J, Granier CJ, Davis S, Piso K, Hand J, Rabson AB, Sabaawy HE. PDCD2 controls hematopoietic stem cell differentiation during development. Stem Cells Dev 2012; 22:58-72. [PMID: 22800338 DOI: 10.1089/scd.2012.0074] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Programmed cell death 2 (Pdcd2) is a highly conserved protein of undefined function, and is widely expressed in embryonic and adult tissues. The observations that knockout of Pdcd2 in the mouse is embryonic lethal at preimplantation stages, and that in Drosophila, Zfrp8, the ortholog of Pdcd2, is required for normal lymph gland development suggest that Pdcd2 is important for regulating hematopoietic development. Through genetic and functional studies, we investigated pdcd2 function during the zebrafish ontogeny. Knockdown of pdcd2 expression in zebrafish embryos resulted in defects in embryonic hematopoietic development. Loss of pdcd2 function caused increased expression of progenitor markers, and accumulation of erythroid progenitors during primitive hematopoiesis. Additionally, hematopoietic stem cells (HSCs) failed to appear in the aorta-gonad mesonephros, and were not able to terminally differentiate or reconstitute hematopoiesis. Pdcd2 effects on HSC emergence were cell autonomous and P53-independent, and loss of pdcd2 function was associated with mitotic defects and apoptosis. Restoration of runx1 function(s) and modulation of apoptosis through the inhibition of Jak/Stat signaling rescued the hematopoietic and erythroid defects resulting from pdcd2 knockdown. Our studies suggest that pdcd2 plays a critical role in regulating the transcriptional hierarchy controlling hematopoietic lineage determination. Furthermore, the effects of pdcd2 in regulating mitotic cell death may contribute to its role(s) in directing hematopoietic differentiation during development.
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Affiliation(s)
- Joseph Kramer
- Department of Medicine, University of Medicine and Dentistry of New Jersey-Robert Wood Johnson Medical School, New Brunswick, New Jersey, USA
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