BST2 (Bone Marrow Stromal Cell Antigen 2), also termed BTS-2 or HM1.24, is a transmembrane protein implicated in cancer progression. Studies on renal cell carcinoma (RCC) reveal its role in tumor growth and invasiveness.
Expression Analysis:
Immunohistochemical analysis of 123 RCC cases showed 32% BST2 positivity, correlating with advanced tumor stage .
Parameter | BST2-Positive Cases | BST2-Negative Cases |
---|---|---|
Tumor stage (III/IV) | 68% | 32% |
5-year survival rate | 48% | 72% |
Metastasis incidence | 41% | 18% |
Functional Impact:
siRNA-mediated BST2 suppression in RCC cell lines (e.g., Caki-1) reduced:
BST2 enhances cell adhesion and activates ERK/AKT signaling pathways, promoting metastasis .
The British Transplantation Society (BTS) provides guidelines for detecting and managing donor-specific antibodies (DSAs) in solid organ transplantation .
Antibody-Mediated Rejection (AMR): DSAs targeting HLA class I/II increase AMR risk by 4–7× .
Graft Survival: Pre-transplant DSAs reduce 5-year kidney graft survival from 90% to 65% .
The term "BTS Antibody" lacks a singular definition but intersects two domains: