Wei Tong, PhD

faculty photo
Associate Professor of Pediatrics
Department: Pediatrics
Graduate Group Affiliations

Contact information
316A Abramson Research Center
The Children’s Hospital of Philadelphia
3615 Civic Center Blvd.
Philadelphia, PA 19104
Office: 267-426-0930
Fax: 267-426-5476
Lab: 267-426-0870
BS (Molecular and cellular biology)
University of Science and Technology of China, 1994.
PhD (Developmental and molecular biology)
Albert Einstein College of Medicine, 2000.
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Description of Research Expertise

Research Interests
Our laboratory is interested in studying molecular mechanisms involved in cytokine receptor signaling in hematopoiesis, hematopoietic stem cell development, and leukemogenesis.

Key words: Hematopoiesis, leukemia, stem cells, cytokine receptor, signaling

Description of Research
Our lab focuses on molecular hematology-oncology with an emphasis on studying signal transduction in normal blood cell development and hematological malignancies. We use genetically-engineered mouse models, bone marrow transplantation, tissue culture cells, gene transcriptional profiling, protein complex purification and mass spectrometric identification, coupled with extensive usage of molecular, cellular, and biochemical technologies.

Hundreds of billions of blood cells have to be replenished everyday. Cytokines and cytokine receptors play important roles in blood cell formation, a process known as hematopoiesis. The amplitude and duration of cytokine receptor signaling is a highly regulated process that is crucial for cytokine- governed hematopoiesis. Dysregulation of these complex signaling networks can predispose to myeloproliferative diseases and myeloid leukemia.

We previously identified the adaptor protein, Lnk, as a novel negative regulator of cytokine receptor signaling. Lnk deficiency in mice results in an enhanced proliferative capacity of hematopoietic stem cells (HSCs) and progenitor cells of multiple lineages. Lnk loss-of-function leads to hyper-sensitivity to thrombopoietin (Tpo) and erythropoietin (Epo), which regulate platelet and red blood cell formation, respectively. Our results also implicate a new mechanism for rapidly downmodulating cytokine signaling: Lnk negatively regulates cytokine receptor induced JAK2 activity in a phosphorylation-dependent manner. We are interested in

1. Elucidating molecular mechanisms of Lnk regulatory functions in cytokine receptor signaling
2. Understanding both normal and oncogenic cytokine receptor signaling processes that control hematopoietic stem and progenitor cell numbers and development in vivo
3. Undertaking studies to identify novel signaling components in the receptor/JAK2 signaling complex that lead to oncogenic transformation, as JAK2 is the central kinase governing many cytokine receptor signaling, and has been found mutated in some patients with myeloproliferative diseases.

Rotation Projects
Potential projects can be discussed with Dr. Tong.

Lab personnel:

Vemika Chandra, postdoctoral fellow
Jing Jiang, postdoctoral fellow
Ying Cheng, postdoctoral fellow
Kaosheng Lyu, postdoctoral fellow
Ryan Donaghy, technician
Yiwen Song, graduate student
Joanna Balcerek, graduate student

Selected Publications

Rozenova Krasimira, Jiang Jing, Donaghy Ryan, Aressy Bernadette, Greenberg Roger A, Tong Wei: MERIT40 deficiency expands hematopoietic stem cell pools by regulating thrombopoietin receptor signaling. Blood 125(11): 1730-8, Mar 2015.

Song Yiwen, Jiang Jing, Vermeren Sonja, Tong Wei: ARAP3 functions in hematopoietic stem cells. PloS one 9(12): e116107, 2014.

Bersenev Alexey, Rozenova Krasimira, Balcerek Joanna, Jiang Jing, Wu Chao, Tong Wei: Lnk deficiency partially mitigates hematopoietic stem cell aging. Aging cell 11(6): 949-59, Dec 2012.

Jiang Jing, Balcerek Joanna, Rozenova Krasimira, Cheng Ying, Bersenev Alexey, Wu Chao, Song Yiwen, Tong Wei: 14-3-3 regulates the LNK/JAK2 pathway in mouse hematopoietic stem and progenitor cells. The Journal of clinical investigation 122(6): 2079-91, Jun 2012.

Bersenev Alexey, Wu Chao, Balcerek Joanna, Jing Jiang, Kundu Mondira, Blobel Gerd A, Chikwava Kudakwashe R, Tong Wei: Lnk constrains myeloproliferative diseases in mice. The Journal of clinical investigation 120(6): 2058-69, Jun 2010.

Yu Duonan, dos Santos Camila O, Zhao Guowei, Jiang Jing, Amigo Julio D, Khandros Eugene, Dore Louis C, Yao Yu, D'Souza Janine, Zhang Zhe, Ghaffari Saghi, Choi John, Friend Sherree, Tong Wei, Orange Jordan S, Paw Barry H, Weiss Mitchell J: miR-451 protects against erythroid oxidant stress by repressing 14-3-3zeta. Genes & development 24(15): 1620-33, Aug 2010.

Yalcin Safak, Marinkovic Dragan, Mungamuri Sathish Kumar, Zhang Xin, Tong Wei, Sellers Rani, Ghaffari Saghi: ROS-mediated amplification of AKT/mTOR signalling pathway leads to myeloproliferative syndrome in Foxo3(-/-) mice. The EMBO journal 29(24): 4118-31, Dec 2010.

Miccio Annarita, Wang Yuhuan, Hong Wei, Gregory Gregory D, Wang Hongxin, Yu Xiang, Choi John K, Shelat Suresh, Tong Wei, Poncz Mortimer, Blobel Gerd A: NuRD mediates activating and repressive functions of GATA-1 and FOG-1 during blood development. The EMBO journal 29(2): 442-56, Jan 2010.

Huang Jian, Zhang Yi, Bersenev Alexey, O'Brien W Timothy, Tong Wei, Emerson Stephen G, Klein Peter S: Pivotal role for glycogen synthase kinase-3 in hematopoietic stem cell homeostasis in mice. The Journal of clinical investigation 119(12): 3519-29, Dec 2009.

Bersenev Alexey, Wu Chao, Balcerek Joanna, Tong Wei: Lnk controls mouse hematopoietic stem cell self-renewal and quiescence through direct interactions with JAK2. The Journal of clinical investigation 118(8): 2832-44, Aug 2008.

Scott Linda M, Tong Wei, Levine Ross L, Scott Mike A, Beer Philip A, Stratton Michael R, Futreal P Andrew, Erber Wendy N, McMullin Mary Frances, Harrison Claire N, Warren Alan J, Gilliland D Gary, Lodish Harvey F, Green Anthony R: JAK2 exon 12 mutations in polycythemia vera and idiopathic erythrocytosis. The New England journal of medicine 356(5): 459-68, Feb 2007.

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Last updated: 03/27/2015
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