whoslets

Researchers at the Max Delbrück Center for Molecular Medicine
(MDC) Berlin-Buch (Germany) and the Charité University Medicine
Berlin (Campus Virchow and Campus Buch) deliver discovered a
molecular method which explains why the cells of Hodgkin
lymphoma, a malignancy affecting the lymph nodes, can change their
suggestion and take on characteristics of other cell lineages.

“This is
a perfect warning of the ability of the B cells, a certain transcribe of human
immune cells affected by Hodgkin lymphoma, to be talented to reorganize their
differentiation program”, say Dr. Stephan Mathas and Dr. Martin Janz
from Professor Bernd Dörken’s group at the MDC and the Charité.

Their findings have for the time being been published online in advance in Variety
Immunology (doi:10.1038/ni1285, 2005) *.

Their data also make it clear
why it has been so difficult to muster up into the open which cells in the body are
affected by the disease which was first described in the literature in
1832 by the English physician and pathologist Thomas Hodgkin. Not
until 1994, 160 years after he had initially described the disease,
scientists had bring about out that it originates in the B cells, individual white
blood cells of the immune scheme. Now, the data of the Berlin research
group also help to conscious of the approach of general and malignant B
room maturation.

The various bloodless blood cells, as clearly as the red blood cells and the
blood platelets, develop from blood stem cells in the bone marrow,
orchestrated by unconventional molecular switches called transcription
factors. They tell the cells which administering “to go”. Until sporadically, it has been
assumed that in the twinkling of an eye humane blood cells force developed into one
running they are no longer superior to do a disappearing act their walkway.

Notwithstanding how,
experiments in mice obtain shown that mature B cells have the capability faculty to
do closely this: reprogramming and developing into different cell
lineages. Until now, it was unclear whether soul blood cells can
go through correspond to processes.

Right away, Dr. Mathas and Dr. Janz were able to express that in Hodgkin Reed
Sternberg cells, which originate from B cells, the program which steers
the differentiation of B cells is imperfection. One of the main regulators of B
cell growth, called E2A, is blocked by two antagonists, known as
Id2 and ABF-1. Following inhibition of E2A, B room characteristics are
obsolete and genes for the treatment of markers of other immune cells, such as
macrophages and T cells, which are not characteristic for B cells, are
upregulated. Thus, the B cells be experiencing changed their presence. These
findings shine light on the unreal aspect of Hodgkin Reed
Sternberg lymphoma cells.

* Elemental inhibition of E2A by ABF-1 and Id2 mediates reprogramming
of neoplastic B cells in Hodgkin lymphoma

Stephan Mathas1,2*, Martin Janz1,2*, Franziska Hummel2, Michael
Hummel3, Brigitte Wollert-Wulf2, Simone Lusatis2 , Ioannis
Anagnosto-poulos3, Andreas Lietz2, Mikael Sigvardsson4, Franziska
Jundt1,2, Korinna Jöhrens3, Kurt Bommert2, Harald Stein3 and Bernd
Dörken1,2

1 - Max-Delbruck-Center for Molecular Medicine, Robert-Rossle-Str. 10,
13125 Berlin
2 - Hematology, Oncology and Tumorimmunology, Charite,
Medical University Berlin, Campus Virchow-Klinikum, Campus Berlin-
Buch, Augustenburger Platz 1, 13353 Berlin
3 - Institute for Pathology,
Charite, Medical University Berlin, Campus Benjamin Franklin, 12200
Berlin
4 - Department for Hematopoietic Stemcell Biology, Stemcell
Center, Lund University, S221 84 Lund, Sweden

*These authors contributed equally to this work

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