Accumulating evidence demonstrates that adult tissues contain a population of very pluripotent stem cells and recently our group identified a population of very small stem cells in murine bone marrow and other adult organs that express several markers characteristic for epiblast/germ line-derived cells. We named these rare cells "very small embryonic/epiblast like stem cells (VSELs)'. We hypothesized that these cells, which are deposited during early gastrulation in developing tissues/organs, play an important role in the turnover of tissue-specific/committed stem cells.


The ImageStream technology was developed as a novel tool for multiparameter cell ana- lysis. The system fully integrates the features of flow cytometry and fluorescent microscopy com- bined with a modern system of image analysis. Similarly to flow cytometry, the ImageStream allows analyzing of a large number of cells according to their fluorescent features and provides statistical analysis of these objects.

Bone marrow as a source of circulating CXCR4 + tissue-targeted cells

The results of our previous studies in which we used the so-called strategy . chemotactic isolation to stromal - derived factor 1 ( called Stromal Cell Derived Factor 1 , SDF- 1 ) in combination with the technique of real-time PCR (Real Time PCR , RT- PCR) showed that there is a bone marrow cell population expressing CXCR4 + mRNA markers for early stem cells targeted tissue ( UTKM ) .

Stem cells - the challenge of the twenty-first century?

Therapeutic strategies involving the use of stem cells in the clinic aroused great hopes in the medical world, becoming the subject of much controversy among scientists, lawyers, clergy, journalists and other opinion formers. This work is a summary of the author's lecture, which was presented at a conference organized by the Academy, dedicated to the clinical application of stem cells. Based on the literature data and the results of their own research author presented his position on this arouses great hopes and controversy, dynamically developing field.

An attempt isolation of human skeletal muscle stem cells

Our group has demonstrated that early skeletal muscle cells (satellite cells) are expressed on the surface of the CXCR4 receptor. We have also found that isolated from skeletal muscle by successive passages and cells having a cell sorter CXCR4 expression form in vitro in cultured myotubes characteristic. We therefore believe that these cells can be used in the process of regeneration of muscle tissue. Conducted in the present study aims at optimizing the methods of isolation for clinical purposes.

Plasticity not embryonic stem cells: fact or artifact?

Plasticity nieembrionalnych stem cells is one of the most controversial issues of modern biology and experimental medicine . The idea that stem cells can be targeted tissue -differentiate , giving rise to stem cells of other tissues and organs, presents both hope to develop new therapeutic strategies in medicine regeracyjnej just using these cells for treatment , on the other, is an important argument in contributing to the slowdown research into the use of a similar order of embryonic cells .

Progress in cell culture methods for transplant - stem cells

Due to its biological properties and the potential possibility of clinical application, the stem cells are currently the subject of an enormous interest. Totipotent stem cells isolated from the early embryo can develop into an embryo. Pluripotent stem cells from an organism selected mature differentiate into all tissue types that may soon find therapeutic use. It appears that the development of tissue engineering methods permit a tissue culture in vitro and their use in subsequent transplantation.

The Editorial Board
Andrzej Łukaszyk - przewodniczący, Zofia Bielańska-Osuchowska, Szczepan Biliński, Mieczysław Chorąży, Aleksander Koj, Włodzimierz Korochoda, Leszek Kuźnicki, Aleksandra Stojałowska, Lech Wojtczak

Editorial address:
Katedra i Zakład Histologii i Embriologii Uniwersytetu Medycznego w Poznaniu, ul. Święcickiego 6, 60-781 Poznań, tel. +48 61 8546453, fax. +48 61 8546440, email:

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