Purification of a colony-stimulating factor from cultured pancreatic carcinoma cells.

作者: M Wu , J K Cini , A A Yunis

DOI: 10.1016/S0021-9258(18)50349-5

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摘要: Serum-free conditioned medium prepared from an established line of human pancreatic carcinoma (MIA PaCa-2) provides a rich source colony-stimulating factor (CSF). Two activities distinctly separable by isoelectrofocusing have been identified: high molecular weight CSF exhibiting greater activity in mouse bone marrow and low more active marrow. The has purified 1000-fold to apparent homogeneity two-step procedure including gel filtration chromatography. 50,000 isoelectric point 3.7 4.6. It is glycoprotein as shown periodic acid-Schiff stain exhibits than

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