Skip to main content

Advertisement

Log in

Aberrant Wnt Signaling Pathway in the Hematopoietic Stem/Progenitor Compartment in Experimental Leukemic Animal

  • Research Article
  • Published:
Journal of Cell Communication and Signaling Aims and scope

Abstract

The evolutionarily conserved Wnt signaling pathway regulates physiological hematopoiesis, a process of formation of blood cells and has been shown to play crucial role in the development of both myeloid and lymphoid malignancies. The Wnt signaling pathway can be broadly divided into canonical and non-canonical pathways. In the present study, we investigated the pathobiology of leukemia by studying the expression profile of Wnt proteins, receptors, key signaling intermediates and endogenous Wnt antagonist involved in canonical and non-canonical pathways in the bone marrow (BM) hematopoietic stem/progenitor cell (HSPC) compartment of experimental leukemic mice. Cell adhesion molecule N-Cadherin and leukemic BM microenvironment with reference to Wnt were also studied. We used ENU, a potent carcinogen, to induce leukemia in wild type Swiss albino mice and malignant transformation was cofirmed by peripheral blood and BM studies. Flow cytometric expression analysis revealed profound up-regulation of canonical Wnt3a/β-catenin/CyclinD1 signaling axis along with N-Cadherin whereas down-regulation of non-canonical Wnt5a/Ca2+/CaMKII signaling axis in the leukemic HSPC compartment. Subsequent use of anti-Wnt3a antibody in the in vitro clonogenicity assay uncovered that anti-Wnt3a antibody preferentially inhibited the growth and number of the primitive leukemic hematopoietic CFU-GEMM and BFU-E colonies. Stromal cells derived from the leukemic BM also exhibited aberrant Wnt3a and Wnt5a protein expression. Taken together, alteration of canonical and non-canonical Wnt signaling pathways in the HSPC compartment along with classical Wnt protein expression pattern in the leukemic stromal microenvironment resulted in progression of leukemia.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1: Pathological features of ENU induced experimental leukemic mice.
Fig. 2: Cytochemistry and immunophenotyping.
Fig. 3
Fig. 4
Fig. 5
Fig. 6

Similar content being viewed by others

Abbreviations

BM:

Bone marrow

HSPC:

Hematopoietic stem/progenitor cell

ENU:

N-ethyl-N-nitrosourea

MPO:

Myeloperoxidase

NSE:

Nonspecific-esterase

Ctrl:

Control

Leuk:

Leukemia

CFU-GEMM:

Colony-forming unit of granulocyte/erythrocyte/macrophage/megakaryocyte

BFU-E:

Burst-forming unit of erythroid cells

CFU-GM:

Colony-forming unit of granulocyte/macrophage

CFU-G:

Colony-forming unit of granulocyte

CFU-E:

Colony-forming unit of erythroid cells

References

Download references

Acknowledgements

Authors are thankful to the Director, Calcutta School of Tropical Medicine for supporting the work. We are also thankful to Leica Microsystem and Dept. of Biological Sciences, Presidency University for providing facilities of confocal microscope.

Funding

This work was supported by the INSPIRE Fellowship, Dept. of Science and Technology, Govt. of India [Fellowship Number: DST/INSPIRE Fellowship/2013/283(IF130354)]; and the Council for Scientific and Industrial Research (CSIR), Govt. of India [Grant Number: No. 37(1429)/10/EMRII].

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Sujata Law.

Ethics declarations

Conflict of Interest

Authors unanimously declare no potential conflict of interest.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Chattopadhyay, S., Chaklader, M. & Law, S. Aberrant Wnt Signaling Pathway in the Hematopoietic Stem/Progenitor Compartment in Experimental Leukemic Animal. J. Cell Commun. Signal. 13, 39–52 (2019). https://doi.org/10.1007/s12079-018-0470-6

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s12079-018-0470-6

Keywords

Navigation