Articles tagged "T cells"

2015 American Transplant Congress
DEPTOR Is Expressed in CD4+ T Cells and Modulates Effector Responses and Allograft Rejection
J. Wedel, S. Bruneau, K. Liu, N. Kochupurakkal, M. Laplante, D. Briscoe.
Transplant Research Program, Boston Children's Hospital, Boston, MA.
DEPTOR is an evolutionarily conserved, first-in-kind cell intrinsic factor with potential to regulate the activity of multiple intracellular signaling pathways. However, its biology in T…
2015 American Transplant Congress
Clinical Utility of Allospecific CD154+T-Cells in Children With Liver Or Intestine Transplantation (LTx, ITx)
K. Soltys, G. Bond, G. Mazariegos, C. Ashokkumar, K. Dirling, L. O'Toole, P. Kachmar, T. Hartle, D. Martin, C. Trautz, R. Sindhi.
Hillman Center for Pediatric Transplantation, Children's Hospital of Pittsburgh of UPMC, Pittsburgh, PA.
Background: Allospecific CD154+T-cytotoxic memory (CD154+TcM) have completed investigational evaluation as predictors of acute cellular rejection in children with LTx or ITx.Purpose: To evaluate CD154+TcM** as…
2015 American Transplant Congress
Molecular and Functional Immune Assays as Non-Invasive Diagnostic Tools to Assess the Risk of Acute Subclinical Rejection After Kidney Transplantation
O. Bestard,^1,2 E. Crespo,¹ T. Sigdel,² S. Roedder,² Y. Ng,² J. Cruzado,¹ M. Lúcia,¹ S.-C. Hsieh,¹ T. Tran,¹ J. Grinyó,¹ M. Sarwal.¹
¹Kidney Transplant Unit, Bellvitge University Hospital, Barcelona, CAT, Spain; ²Department of Transplant Surgery, UCSF, San Francisco, CA.
Subclinical allograft rejection (sc-AR) is still a main cause of allograft loss that can only be assessed through invasive surveillance biopsies. We sought to investigate…
2015 American Transplant Congress
miR-155 Different Roles in UCB iTreg and nTreg
Y. Lu, L. Lu.
Liver Transplantation Center of First Affiliated Hospital, Nanjing Medical University, Nanjing, Jiangsu, China.
OBJECTIVES:miR-155 has been associated with both innate and adaptive immune responses. SOCS1, which is involved in Treg survival and function, is a direct target of…
2015 American Transplant Congress
Adoptive Transfer of T Cell Receptor-Transgenic (TCR-Tg) Cells Alters Endogenous Immune Responses During Acute Rejection
M. Miller, M. Daniels, Y. Wang, D. Yin, A. Chong, M.-L. Alegre.
University of Chicago, Chicago, IL.
In addition to the therapeutic use of adoptive transfer of T cells to combat viral infections and malignancies in humans, adoptive transfer of T cell…
2015 American Transplant Congress
PI3Kα and STAT1 Interplay Regulates Human Mesenchymal Stem Cell Immune Polarization
E. Kefalogianni,¹ M. Mounayar,² B. Smith,² J. Azzi,² L. Chabtini,² P. Fiorina,² M. Kraus,³ R. Briddell,⁴ W. Fodor,⁵ A. Herrlich,¹ R. Abdi.²
¹Brigham and Women's Hospital, Harvard Medical School, Boston, MA; ²Transplantation Research Center, Brigham and Women's and Children's Hospital, Harvard Medical School, Boston, MA; ³Viacord LLC, a PerkinElmer Company, Cambridge, MA; ⁴ViaCord Processing Lab, Viacord LLC, a PerkinElmer Company, Hebron, KY; ⁵The Cell Therapy Group, Madison, CT.
The immunomodulatory capacity of mesenchymal stem cells (MSC) is critical for their use in therapeutic applications. MSC response to specific inflammatory cues allows them to…
2015 American Transplant Congress
Pre-Transplant Levels of TFH cell-Inducing Pro-Inflammatory Cytokines Correlate With DSA Formation After Kidney Transplantation
C. Macedo,¹ K. Hadi,¹ B. Elinoff,¹ M. Marrari,¹ A. Zeevi,¹ B. Ramaswami,¹ G. Chalasani,¹ A. Shields,² R. Alloway,³ E. Woodle,² F. Lakkis,¹ D. Metes.¹
¹Thomas E. Starzl Transplantation Institute, University of Pittsburgh, Pittsburgh; ²Surgery, University of Cincinnati College of Medicine, Cincinnati; ³Internal Medicine-Nephrology, University of Cincinnati College of Medicine, Cincinnati.
Donor-specific anti-HLA antibodies (DSA) represent an important biomarker for acute rejection and are a major cause of long-term graft failure after kidney transplantation (KTx). The…
2015 American Transplant Congress
Hepatic Stellate Cells Inhibit T Cells Through Active TGFβ1 from a Cell-Surface-Bound Latent TGFβ1/GARP Complex
Y. Li, B.-G. Kim, S. Qian, J. Letterio, J. Fung, L. Lu, F. Lin.
Immunology, Lerner Research Institute, Cleveland Clinic; 2Pediatric Hematology-Oncology, Case Western Reserve University; 3General Surgery, Digestive Disease Institute, Cleveland Clinic, Cleveland, OH.
Nonparenchymal cells appear to be critical to maintain the immunoprivileged status of liver as whole liver allografts are well-tolerated in mice, but allo-hepatocytes are rapidly…
2015 American Transplant Congress
The Significant Association Between the Functional Polymorphism (Rs3761548) of Foxp3 Gene and the Severity of Acute Cellular Rejection in Liver Transplantation
S. Verma, Y. Tanaka, S. Shimizu, L. Das, H. Ohdan.
Department of Gastroenterological and Transplant Surgery, Hiroshima University, Hiroshima, Japan.
Aim- Acute cellular rejection (ACR) accounts for 15-25% of graft failure in living donor liver transplantation (LDLT). T regulatory cells (Treg) play an important role…
2015 American Transplant Congress
Aging Enhances Immunosuppressives Capacities of Tacrolimus By Functional Changes of CD4+ T-Cells
F. Krenzien,¹ M. Quante,¹ A. ElKhal,¹ H. Uehara,¹ R. Abdi,² B. Slegtenhorst,¹ H. Biefer,¹ S. Tullius.¹
¹Transplant Surgery Research Laboratory and Division of Transplant Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA; ²Transplantation Research Center, Renal Division, Brigham and Women's Hospital, Harvard Medical School, Boston, MA.
Immunosenescence has broad consequences on alloimmunity and immunosuppression in the elderly may require age-adaptation. Here, we investigated the influence of aging on the effectivity of…