Abcam’s TNF beta Human in vitro ELISA (Enzyme-Linked Immunosorbent Assay) kit is designed for accurate quantitative measurement of Human TNF beta concentrations in cell culture supernatant, serum and plasma.
TNF beta specific antibodies have been precoated onto 96-well plates. Standards and test samples are added to the wells and along with HRP-conjugated TNF beta detection antibody and the microplate is then incubated at room temperature and unbound conjugates are then washed away using wash buffer. TMB is the added and catalyzed by HRP to produce a blue color product that subsequently changes to yellow after addition of acidic stop solution. The density of yellow coloration is directly proportional to the TNF beta amount of sample captured in plate.
Cytokine that in its homotrimeric form binds to TNFRSF1A/TNFR1, TNFRSF1B/TNFBR and TNFRSF14/HVEM. In its heterotrimeric form with LTB binds to TNFRSF3/LTBR. Lymphotoxin is produced by lymphocytes and cytotoxic for a wide range of tumor cells in vitro and in vivo.
Involvement in disease
Genetic variations in LTA are a cause of susceptibility psoriatic arthritis (PSORAS) [MIM:607507]. PSORAS is an inflammatory, seronegative arthritis associated with psoriasis. It is a heterogeneous disorder ranging from a mild, non-destructive disease to a severe, progressive, erosive arthropathy. Five types of psoriatic arthritis have been defined: asymmetrical oligoarthritis characterized by primary involvement of the small joints of the fingers or toes; asymmetrical arthritis which involves the joints of the extremities; symmetrical polyarthritis characterized by a rheumatoidlike pattern that can involve hands, wrists, ankles, and feet; arthritis mutilans, which is a rare but deforming and destructive condition; arthritis of the sacroiliac joints and spine (psoriatic spondylitis).
Belongs to the tumor necrosis factor family.
Secreted. Membrane. The homotrimer is secreted. The heterotrimer is membrane-associated.