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取空肠弯曲菌（ＣＪ－Ｓ１３１）免疫的Ｂａｌｂ／ｃ小鼠脾细胞与骨髓瘤细胞ＳＰ２／Ｏ融合，制备出４种能与空肠弯曲菌和可提取核抗原（ＥＮＡ）起反应的单抗。以Ｈｅｐ－２细胞作基质的免疫荧光染色表明，４种单抗均呈阳性结果，证实为抗核抗体。当单抗腹水被空肠弯曲菌菌体吸收后，其抗ＥＮＡ的活性明显降低，证明这４种单抗与空肠弯曲菌ＣＪ－Ｓ１３１和ＥＮＡ存在交叉反应性。免疫印渍试验表明，４种单抗均与空肠弯曲菌ＣＪ－Ｓ１３１的４３ｋＤ外膜蛋白反应。这一结果提示：空肠弯曲菌ＣＪ－Ｓ１３１的４３ｋＤ外膜蛋白与ＥＮＡ之间可能存在相似的分子构象，这为自身免疫病发机制的分子模拟假说提供了实验的依据。
Splenocytes of Balb / c mice immunized with Campylobacter jejuni (CJ-S131) were fused with myeloma cells SP2 / O to prepare four monoclonal antibodies that react with Campylobacter jejuni and extractable nuclear antigen (ENA). Immunofluorescence staining using Hep-2 cells as a substrate showed that all four McAbs showed positive results and were confirmed as antinuclear antibodies. When the McAb ascites was absorbed by C. jejuni, its anti-ENA activity was significantly reduced. These McAbs proved cross-reactive with C. jejuni CJ-S131 and ENA. Immunohistochemical staining showed that the four McAbs reacted with the 43 kD OMP of Campylobacter jejuni CJ-S131. This result suggests that there may be a similar molecular conformation between 43kD outer membrane protein of Campylobacter jejuni CJ-S131 and ENA, which provides the experimental basis for the molecular simulation hypothesis of autoimmune pathogenesis.