Anti-Hu CD34 Alexa Fluor® 488

CD34 is a highly glycosylated monomeric 111-115 kDa surface protein, which is present on many stem cell populations. It is a well established stem cell marker, though its expression on human hematopoietic stem cells is reversible. CD34 probably serves as a surface receptor that undergoes receptor-mediated endocytosis and regulates adhesion, differentiation and proliferation of hematopoietic stem cells and other progenitors. CD34 expression is likely to represent a specific state of hematopoietic development that may have altered adhering properties with expanding and differentiating capabilities in both in vitro and in vivo conditions.

Non-human primates, Human

Human endothelial vesicles

CD34

QBEnd-10

IHC-P, FC (QC tested), IHC-F

Alexa Fluor® 488

Stabilizing phosphate buffered saline (PBS), pH 7.4, 15 mM sodium azide

*Schlingemann RO, Rietveld FJ, de Waal RM, Bradley NJ, Skene AI, Davies AJ, Greaves MF, Denekamp J, Ruiter DJ: Leukocyte antigen CD34 is expressed by a subset of cultured endothelial cells and on endothelial abluminal microprocesses in the tumor stroma. Lab Invest. 1990 Jun;62 (6) :690-6., URL: https://www.ncbi.nlm.nih.gov/pubmed/1694254?ordina, *Ramani P, Bradley NJ, Fletcher CD: QBEND/10, a new monoclonal antibody to endothelium: assessment of its diagnostic utility in paraffin sections. Histopathology. 1990 Sep;17 (3) :237-42., URL: https://www.ncbi.nlm.nih.gov/pubmed/2242851?ordina, *Kuzu I, Bicknell R, Harris AL, Jones M, Gatter KC, Mason DY: Heterogeneity of vascular endothelial cells with relevance to diagnosis of vascular tumours. J Clin Pathol. 1992 Feb;45 (2) :143-8., URL: https://www.ncbi.nlm.nih.gov/pubmed/1371777?ordina, *Sutherland DR, Marsh JC, Davidson J, Baker MA, Keating A, Mellors A: Differential sensitivity of CD34 epitopes to cleavage by Pasteurella haemolytica glycoprotease: implications for purification of CD34-positive progenitor cells. Exp Hematol. 1992 Jun;20 (5) :590-9., URL: https://www.ncbi.nlm.nih.gov/pubmed/1375160?ordina, *Grimsley PG, Amos TA, Gordon MY, Greaves MF: Rapid positive selection of CD34+ cells using magnetic microspheres coated with monoclonal antibody QBEND/10 linked via a cleavable disulphide bond. Leukemia. 1993 Jun;7 (6) :898-908., URL: https://www.ncbi.nlm.nih.gov/pubmed/7684800?ordina, *Poblet E, Jimenez-Acosta F, Rocamora A: QBEND/10 (anti-CD34 antibody) in external root sheath cells and follicular tumors. J Cutan Pathol. 1994 Jun;21 (3) :224-8., URL: https://www.ncbi.nlm.nih.gov/pubmed/7525669?ordina, *Traoré Y, Hirn J: Certain anti-CD34 monoclonal antibodies induce homotypic adhesion of leukemic cell lines in a CD18-dependent and a CD18-independent way. Eur J Immunol. 1994 Oct;24 (10) :2304-11., URL: https://www.ncbi.nlm.nih.gov/pubmed/7523134?ordina, *Koumarianou A, Economopoulou P, Katsaounis P, Laschos K, Arapantoni-Dadioti P, Martikos G, Rogdakis A, Tzanakis N, Boukovinas I: Gastrointestinal stromal tumors (GIST) : A prospective analysis and an update on biomarkers and current treatment concepts. Biomark Cancer 2015 May 21;7 (Suppl 1) :1-7. , URL: https://pubmed.ncbi.nlm.nih.gov/26056505/, *Castrechini NM, Murthi P, Gude NM, Erwich JJ, Gronthos S, Zannettino A, Brennecke SP, Kalionis B: Placenta. Mesenchymal stem cells in human placental chorionic villi reside in a vascular niche. 2010 Mar;31 (3) :203-12. , URL: https://pubmed.ncbi.nlm.nih.gov/20060164/, *Bonelli P, Nicolussi P, Manetti R, Antuofermo E, Dattena M: Monoclonal antigen do not cross-react with ovine umbilical cord blood cells. Ital J Anim Sci 2010, vol.9:e6., URL: https://www.tandfonline.com/doi/full/10.4081/ijas.2010.e6, *Radovic S, Meng W, Chen L, Paniz Mondolfi AE, Bryce C, Grimes Z, Sordillo EM, Cordon-Cardo C, Guo H, Huang Y, Gao SJ: SARS-CoV-2 infection of kidney tissues from severe COVID-19 patients. J Med Virol. 2023 Feb;95 (2) :e28566., URL: https://pubmed.ncbi.nlm.nih.gov/36756942/

*Krauter J, Hartl M, Hambach L, Kohlenberg A, Gunsilius E, Ganser A, Heil G: Receptor-mediated endocytosis of CD34 on hematopoietic cells after stimulation with the monoclonal antibody anti-HPCA-1. J Hematother Stem Cell Res. 2001 Dec;10 (6) :863-71., URL: http://www.ncbi.nlm.nih.gov/pubmed/11798512?ordina, *Dao MA, Arevalo J, Nolta JA: Reversibility of CD34 expression on human hematopoietic stem cells that retain the capacity for secondary reconstitution. Blood. 2003 Jan 1;101 (1) :112-8., URL: http://www.ncbi.nlm.nih.gov/pubmed/12393633?ordina, *Gangenahalli GU, Singh VK, Verma YK, Gupta P, Sharma RK, Chandra R, Gulati S, Luthra PM: Three-dimensional structure prediction of the interaction of CD34 with the SH3 domain of Crk-L. Stem Cells Dev. 2005 Oct;14 (5) :470-7., URL: http://www.ncbi.nlm.nih.gov/pubmed/16305332?ordina, *Gangenahalli GU, Singh VK, Verma YK, Gupta P, Sharma RK, Chandra R, Luthra PM: Hematopoietic stem cell antigen CD34: role in adhesion or homing. Stem Cells Dev. 2006 Jun;15 (3) :305-13., URL: http://www.ncbi.nlm.nih.gov/pubmed/16846369?ordina

Store at 2-8°C. Protect from prolonged exposure to light. Do not freeze.

The antibody QBEnd-10 reacts with an extracellular class II epitope on CD34, a 110-115 kDa monomeric transmembrane phosphoglycoprotein expressed on hematopoietic progenitors cells and on the most pluripotential stem cells; it is gradually lost on progenitor cells. This antibody has been also used as an endothelial marker.

6

Mouse IgG1