The Health Science Research Resources Bank (HSRRB), the first public human tissue bank in Japan, has been providing human cells prepared from remnant tissues obtained from surgeries performed on Japanese patients to academia and industry under the approval of institutional review board (IRB). HSRRB possesses several lots of fibroblast-like synoviocytes (FLSs) derived from synovial tissues of Japanese patients with rheumatoid arthritis (RA). FLSs are closely related to the pathogenesis of RA. Here we report the quality controls on FLSs revealing the features reflecting RA. We measured the production of matrix metalloproteinase (MMP) -3 and interleukin (IL) -6 in the cells following tumor necrosis factor-alpha (TNF-α) treatment at protein and mRNA levels using ELISA, Western blotting, and RT-PCR methods. As a result, we found that all lots of FLSs maintained a significant inflammatory response to TNF-α during several passages, suggesting a physiological aspect in RA.
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