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JCI online ahead of print contents for June 9, 2014

Clinical trial evaluates ex vivo cultured cord blood

Umbilical cord blood (UCB) is a rich source of hematopoietic stem and progenitor cells (HSPCs) that can be used for bone marrow transplantation; however, UCB transplantation is hampered by low numbers of HSPCs per donation, which delays engraftment and immune reconstitution. In this issue of the Journal of Clinical Investigation, Mitchell Horwitz and colleagues at Duke University Medical Center conducted a phase I clinical trial to test the long term engraftment capability of UCB HSPCs that were expanded ex vivo for 21 days in the presence of nicotinamide and then combined with the non-cultured T cell fraction of the UCB (NiCord). Eleven adults with hematological malignancies received 1 unit of NiCord and a second unit of un-manipulated UCB following myeloablative bone marrow conditioning. Eight patients exhibited complete or partial engraftment of the NiCord unit and achieved earlier hematopoietic recovery compared to historical controls. These results indicate that further clinical study of NiCord is warranted.

TITLE: Umbilical cord blood expansion with nicotinamide provides long-term multilineage engraftment

AUTHOR CONTACT: Mitchell Horwitz
Duke University Medical Center, Durham, NC, USA
Phone: 919-668-1045; E-mail:

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Murine model of Ewing's sarcoma reveals tumor origins

Ewing's sarcoma is a rare pediatric bone tumor that results from a genetic translocation that results in an EWS-ETS fusion. The tumor can have both mesodermal and ectodermal features, making it difficult to determine the cellular origin. In this issue of the Journal of Clinical Investigation, Takuro Nakamura and colleagues at the Japanese Foundation for Cancer Research developed a murine model of Ewing's sarcoma by introducing EWS-ETS fusion genes into a late gestational cell fraction enriched for osteochondrogenic progenitors from the embryonic superficial zone (eSZ) of the long bones The model tumors shared a gene expression profile with human Ewing's sarcoma and both murine and human tumors exhibited upregulated of WNT/β-catenin and EGF signaling. Finally, inhibitors of the WNT/β-catenin pathway attenuated murine tumor growth. This model provides a tool to evaluate potential therapies for treatment of this rare disease.

TITLE: Ewing's sarcoma precursors are highly enriched in embryonic osteochondrogenic progenitors

AUTHOR CONTACT: Takuro Nakamura
The Cancer Institute, Tokyo, JPN
Phone: 81-3-3570-0462; Fax: 81-3-3570-0463; E-mail:

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TITLE: Phosphatase WIP1 regulates adult neurogenesis and WNT signaling during aging

AUTHOR CONTACT: Dmitry Bulavin
Institute Of Molecular And Cellular Biology, Singapore, SGP
Phone: 65-65869589; E-mail:

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TITLE: Vitamin B12dependent taurine synthesis regulates growth and bone mass

Wellcome Trust Sanger Institute, Cambridge, GBR
Phone: +44-01223-496948; E-mail:

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TITLE: Hypomorphic PCNA mutation underlies a human DNA repair disorder

University of Exeter Medical School, Exeter, GBR
Phone: +44 (0)1392 408302; E-mail:

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TITLE: Characterization of pandemic influenza immune memory signature after vaccination or infection

AUTHOR CONTACT: Behazine Combadiere
INSERM UMR 1135, Paris, , FRA
Phone: +33140779888; Fax: +33140779734; E-mail:

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TITLE: Immune activation alters cellular and humoral responses to yellow fever 17D vaccine

AUTHOR CONTACT: Lydie Trautmann
Vaccine and Gene Therapy Institute-Florida, Port Saint Lucie, FL, USA
Phone: 772-345-5671; Fax: 772-345-0625; E-mail:

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TITLE: Missense dopamine transporter mutations associate with adult parkinsonism and ADHD

University of Copenhagen, DK-2200 Copenhagen N, Denmark
Phone: 45.2384.0089; Fax: 45.3532.7610; E-mail:

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TITLE: CRIPTO1 expression in EGFR-mutant NSCLC elicits intrinsic EGFR-inhibitor resistance

AUTHOR CONTACT: Giuseppe Giaccone
Georgetown University, Washington, DC, USA
Phone: 202.687.7072; Fax: 202.687.0313;


Yisong Wang
Georgetown University, Washington, DC, USA
Phone: 202.687.4738; Fax: 202.687.0313;

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TITLE: MicroRNA-205 signaling regulates mammary stem cell fate and tumorigenesis

AUTHOR CONTACT: Chun-Ju (Alice) Chang
Purdue University, West Lafayette, USA
Phone: 7654942648; E-mail:

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Contact: Corinne Williams
Journal of Clinical Investigation

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