Tuesday 26 December 2017

An article published this year in the “Clinical Immunology” using one of our products, “FITC Mouse Anti-Human CD56”, by our customers from Egypt, in the analysis of how Modulation the expression of natural killer cell activating receptor (NKp44) in the peripheral blood of diffuse large B-cell lymphoma patients and the correlation with clinic pathological features. Congrats and Thanks.


Summay:
NK cell activation is one strategy to improve the immunotherapy of non-Hodgkin's lymphoma. So, we aimed to investigate expression of Natural killer cell activating receptor NKp44 in patients with diffuse large B-cell lymphoma (DLBCL) and its correlation with clinic pathological data. In this study, 30 new cases with DLBCL in addition to 20 healthy control were involved. All were submitted to full history, clinical examination, histopathology, Routine laboratory investigations including CBC, LDH, β2microgloubine and bone marrow examination. Cell culture of peripheral blood mononuclear cells and expression of CD56 and NKp44 by flowcytometry was done. We demonstrated increased NK cell populations (CD 56 + ve NKp44 –ve, CD 56 –veNKp44 + ve, total CD 56 + ve) and NKp44 MFI after in-vitro activation in both healthy control and DLBCL cases except for CD 56 + ve NKp44 + ve which significantly increased in patients not in healthy control (p = 0.005, 0.601) respectively. No significant difference between the DLBCL and healthy control regarding all NK cell populations without PHA stimulation. However, the culture with PHA in DLBCL showed significant increase in NK cell populations than the healthy control (CD 56 + ve NKp44 + ve 12.37 ± 7.52vs 6.80 ± 4.07, p = 0.008), (Total CD 56 + ve 18.80 ± 8.74vs 12.66 ± 5.17, p = 0.017), (MFI of NKp44 10.95 ± 6.18vs 5.58 ± 1.70, p = 0.001). Regarding the association with clinic pathologic features, increased expression of NKp44 was associated with lower values of LDH and earlier stages of DLBCL (p < 0.05). So, activating receptor NKp44 can be modulated by in-vitro activation, hence improvement of its function as an approach of immunotherapy of DLBCL.


a: flowcytometric analysis of CD56 and NKp44 expression in control without PHA stimulation. b: flowcytometric analysis of CD56 and NKp44 expression in control with PHA stimulation.


Reference:

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FITC Mouse anti-Human CD56

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