» Articles » PMID: 36009726

MHCII Expression on Peripheral Blood Monocytes in Canine Lymphoma: An Impact of Glucocorticoids

Overview
Journal Animals (Basel)
Date 2022 Aug 26
PMID 36009726
Authors
Affiliations
Soon will be listed here.
Abstract

An increase in the percentage of monocytes with reduced HLA-DR expression and immunosuppressive properties has been reported in numerous human neoplastic diseases, including lymphoma. However, there are no analogous studies on phenotypical variations in the peripheral blood monocytes in dogs with lymphoma. The aim of this study was to determine the difference in the expression of the MHCII molecule on peripheral blood monocytes in dogs with lymphoma before any treatment (NRG) and in dogs that had previously received glucocorticoids (RG) in comparison to healthy dogs. Flow cytometry immunophenotyping of peripheral blood leukocytes was performed using canine-specific or cross-reactive antibodies against CD11b, CD14 and MHCII. In the blood of dogs with lymphoma (NRG and RG), compared to that of healthy ones, the MHCII+ and MHCII- monocytes ratio was changed due to an increase in the percentage of MHCII- monocytes. The number of MHCII- monocytes was significantly higher only in RG dogs compared to healthy ones, which might result from the release of these cells from the blood marginal pool due to the action of glucocorticoids. Our results encourage further studies to assess if changes in MHCII expression affect immune status in dogs with lymphoma.

Citing Articles

A review of CD4 T cell differentiation and diversity in dogs.

Lang H, Osum K, Friedenberg S Vet Immunol Immunopathol. 2024; 275:110816.

PMID: 39173398 PMC: 11421293. DOI: 10.1016/j.vetimm.2024.110816.

References
1.
Jacobsen C, Aasted B, Broe M, Petersen J . Reactivities of 20 anti-human monoclonal antibodies with leucocytes from ten different animal species. Vet Immunol Immunopathol. 1993; 39(4):461-6. DOI: 10.1016/0165-2427(93)90075-f. View

2.
Gupta M, Han J, Stenson M, Maurer M, Wellik L, Hu G . Elevated serum IL-10 levels in diffuse large B-cell lymphoma: a mechanism of aberrant JAK2 activation. Blood. 2012; 119(12):2844-53. PMC: 3327462. DOI: 10.1182/blood-2011-10-388538. View

3.
Javeed N, Gustafson M, Dutta S, Lin Y, Bamlet W, Oberg A . Immunosuppressive CD14HLA-DR monocytes are elevated in pancreatic cancer and "primed" by tumor-derived exosomes. Oncoimmunology. 2017; 6(1):e1252013. PMC: 5283619. DOI: 10.1080/2162402X.2016.1252013. View

4.
Ono S, Tsujimoto H, Matsumoto A, Ikuta S, Kinoshita M, Mochizuki H . Modulation of human leukocyte antigen-DR on monocytes and CD16 on granulocytes in patients with septic shock using hemoperfusion with polymyxin B-immobilized fiber. Am J Surg. 2004; 188(2):150-6. DOI: 10.1016/j.amjsurg.2003.12.067. View

5.
de Waal Malefyt R, Haanen J, Spits H, Roncarolo M, Te Velde A, Figdor C . Interleukin 10 (IL-10) and viral IL-10 strongly reduce antigen-specific human T cell proliferation by diminishing the antigen-presenting capacity of monocytes via downregulation of class II major histocompatibility complex expression. J Exp Med. 1991; 174(4):915-24. PMC: 2118975. DOI: 10.1084/jem.174.4.915. View