MACS GMP PepTivator

MACS GMP PepTivator EBV EBNA-1 is a peptide pool that consists mainly of 15-mer peptides with 11 amino acids overlap. It has been developed for efficient
in vitro
stimulation and subsequent isolation of EBV EBNA-1–specific CD4
and CD8
T cells.


MACS GMP Products are for research use and
ex vivo
cell culture processing only, and are not intended for human
in vivo
applications. For regulatory status in the USA, please contact your local representative.

Background information

Epstein-Barr virus (EBV) is a human γ-herpesvirus with B cell growth–transforming ability and carcinogenic potential. More than 90% of human adults are infected with EBV. In healthy individuals, EBV typically establishes a persistent latent infection, in which the virus can be detected in resting, non-proliferating peripheral B lymphocytes.
The Epstein-Barr nuclear antigen 1 (EBNA-1) protein is involved in the replication of viral episomes and therefore crucial for the persistence of the infection. Its expression is maintained in all latency cycles of infection and in all EBV-associated malignancies.


T cells are essential for the control of the outgrowth of EBV-infected B cells. EBNA-1–specific CD4
and CD8
T cells have been found in EBV-infected individuals.
Adoptive transfer of EBNA-1–specific T cells may be an effective tool for the treatment of EBV-associated malignancies.
In vitro
stimulation of EBNA-1–specific CD4
and CD8
T cells with MACS GMP PepTivator EBV EBNA-1 causes the production of the effector cytokine IFN-γ. The secretion of IFN-γ then permits the enrichment of EBNA-1–specific effector/memory T cells using the CliniMACS
Cytokine Capture System (IFN-gamma).

Quality statement

MACS GMP Products are manufactured and tested under a quality management system (ISO 13485) and are in compliance with relevant GMP guidelines. They are designed following the recommendations of USP <1043> on ancillary materials.
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ISCT Webinar: CliniMACS Prodigy – Mastering the complexity of cell processing

This webinar introduces the CliniMACS Prodigy System; and outlines the Cytokine Capture System (IFN-gamma) process for the manufacturing of multi-antigen-specific T cells. The webinar was produced by the International Society for Cellular Therapy, ISCT.

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