TAILIEUCHUNG - cancer stem cells theories and practice_part9

Sự chênh lệch tương tự đã được nhìn thấy cho CD38 nghiên cứu tiên lượng. Ví dụ, trong năm 1993, Koehler et al. Điều đó báo cáo biểu hiện CD38 không đáng kể tương quan với những kết quả của 325 bệnh nhân của bệnh bạch cầu lymphoblastic cấp tính ở trẻ em (ALL) (Koehler et al., 1993). | The Rocky Road from Cancer Stem Cell Discovery to Diagnostic Applicability 337 Similar disparity was seen for CD38 prognostic studies. For example in 1993 Koehler et al. reported that CD38 expression failed to significantly correlate with the outcomes of 325 patients of childhood acute lymphoblastic leukemia ALL Koehler et al. 1993 . In 2000 Keyhani et al. evaluated the levels of CD38 expression in the blasts of 304 AML and 138 ALL patients Keyhani et al. 2000 . Patients with the higher percentages of CD38 cancer cells had the best outcomes experiencing both longer times between remission and relapse and improved overall survival. Their results infer that patients with increased CD38- LSC marker cancer cells experienced the worse outcomes. However lack of CD38 expression was only a significant independent risk factor for the AML patients not ALL patients. In 2003 Repp et al. assessed the prognostic value of a panel of 33 different CD molecules for AML Repp et al. 2003 . Among the panel expression of CD38 and CD34 was quantified singly in 783 patient samples. As the CSC theory would predict patients with increased CD34 expression or decreased CD38 expression had poorer overall outcomes. Other LSC markers have also been tested for their prognostic value individually. In a 1994 immunophenotyping AML prognostic study Bradstock et al. 1994 LSC proposed markers CD34 c-kit CD117 and HLA-DR Blair et al. 1998 Blair and Sutherland 2000 were among the panel of CD antigens tested. CD34 c-kit and HLA-DR expression failed to correlate with patient outcome Bradstock et al. 1994 . A more recent study concluded that increased c-kit CD117 expression correlated with worse outcomes for AML patients Advani et al. 2008 . This result was in direct disagreement with the CSC theory since it is the lack of c-kit expression in combination with CD34 expression that was used to identify LSCs Blair and Sutherland 2000 . The above described studies suggest that the prognostic potential of LSC .

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