{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,31]],"date-time":"2025-12-31T20:05:02Z","timestamp":1767211502870,"version":"3.41.0"},"reference-count":28,"publisher":"American Physiological Society","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["American Journal of Physiology-Lung Cellular and Molecular Physiology"],"published-print":{"date-parts":[[2000,4,1]]},"abstract":"<jats:p>Tissue inhibitors of metalloproteinases (TIMPs) play a key regulatory role in extracellular matrix remodeling. By screening a lung library with a human TIMP-2 cDNA probe, we have isolated the cDNA corresponding to guinea pig TIMP-2. The 3.5-kb cDNA presents an open reading frame that predicts a protein of 220 amino acids showing 97.2, 96.8, 97.2, and 77.3% overall identity with human, mouse, rat, and chicken TIMP-2, respectively. Guinea pig TIMP-2 cDNA was expressed in CHO-K1 cells, showing a protein with the expected molecular weight and activity. Northern blot analysis revealed TIMP-2 expression in brain, kidney, intestine, spleen, heart, and lung. Transforming growth factor-\u03b2 downregulated TIMP-2 mRNA in guinea pig lung fibroblasts, whereas a variety of other stimuli showed no effect. In normal and hyperoxia-exposed lungs, TIMP-2 mRNA was mainly localized in alveolar macrophages and epithelial cells. No quantitative differences were found by Northern blot. These results confirm that TIMP-2 is highly conserved in mammals and largely expressed in lungs.<\/jats:p>","DOI":"10.1152\/ajplung.2000.278.4.l737","type":"journal-article","created":{"date-parts":[[2017,12,23]],"date-time":"2017-12-23T23:57:00Z","timestamp":1514073420000},"page":"L737-L743","source":"Crossref","is-referenced-by-count":4,"title":["Cloning and expression of guinea pig TIMP-2. 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