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. 1992 Dec;141(6):1285–1290.

Growth fraction in non-small cell lung cancer estimated by proliferating cell nuclear antigen and comparison with Ki-67 labeling and DNA flow cytometry data.

G Fontanini 1, R Pingitore 1, D Bigini 1, S Vignati 1, S Pepe 1, A Ruggiero 1, P Macchiarini 1
PMCID: PMC1886777  PMID: 1361306

Abstract

Results generated by the immunohistochemical staining with PC10, a new monoclonal antibody recognizing PCNA (a nuclear protein associated with cell proliferation) in formalin-fixed and paraffin-embedded tissue were compared with those of Ki-67 labeling and DNA flow cytometry in 47 consecutive non-small cell lung cancer (NSCLC). PCNA reactivity was observed in all samples and confined to the nuclei of cancer cells. Its frequency ranged from 0 to 80% (37.7 +/- 23.6) and larger sized, early-staged and DNA aneuploid tumors expressed a significant higher number of PCNA-reactive cells. The PCNA and Ki-67 labeling rates were closely correlated (r = 0.383, P = 0.009). By flow cytometry, we observed a good correlation among PCNA labeling and S-phase fraction (r = 0.422, P = .0093) and G1 phase (r = 0.303, P = .051) of the cell cycle. Results indicate that PCNA labeling with PC10 is a simple method for assessing the proliferative activity in formalin-fixed, paraffin-embedded tissue of NSCLC and correlates well with Ki-67 labeling and S-phase fraction of the cell cycle.

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Selected References

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