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Cited by 302

The DOI matches its Crossref record; 45 of the 45 references it cites were found in a registry or an index.

Transforming growth factor-beta 1 up-regulates type IV collagenase expression in cultured human keratinocytes

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Salo, T., Lyons, J.G., Rahemtulla, F., Birkedal-Hansen, H., Larjava, H.·1991·Journal of Biological Chemistry

Abstract

During the wound healing process lysis of basement membranes precedes keratinocyte migration into the wound bed. We studied, in vitro, whether this degradation of basement membranes could be regulated by transforming growth factor-beta 1 (TGF-beta 1), which is known to accelerate wound healing in vivo. Transforming growth factor-beta 1 was found to increase the expression of both 92- and 72-kDa type IV collagenases (gelatinases) in cultured human mucosal and dermal keratinocytes. The 92-kDa enzyme predominated in both unstimulated and stimulated cultures. The 92-kDa form was stimulated over 5-fold, and the other form by a factor of 2-3. This increase in the synthesis of type IV collagenases was associated with a marked increase in the mRNA levels of these enzymes as well. The induction of the 92-kDa enzyme was similar in culture medium containing either 0.15 or 1.2 mM calcium chloride. Rat mucosal keratinocytes secreted only 92-kDa type IV collagenase, the secretion of which was not regulated by TGF-beta 1. Also, TGF-beta 1 did not cause any significant induction (maximum about 1.2-fold) of either type IV collagenase in human gingival fibroblasts. The induction levels of both collagenases in human keratinocytes were independent of the type of the extracellular matrix the cells were grown on. However, the basement membrane matrix (Matrigel) activated about half of the 92-kDa type to its 84-kDa active form. The data suggest that TGF-beta 1 has a specific function in up-regulating the expression of type IV collagenases in human keratinocytes, offering a possible explanation of how keratinocytes detach from basement membranes prior to the migration over the wound bed.

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Metadata

Authors
Salo, T., Lyons, J. G., Rahemtulla, F., Birkedal-Hansen, H., & Larjava, H.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
1991-06
Volume
266
Issue
18
Pages
11436-11441
ISSN
0021-9258 (ISSN-L)
OpenAlex
W1550906650
Cited by
302
References
45
FWCI
10.68
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: Transforming growth factor-beta 1 up-regulates type IV collagenase expression in cultured human keratinocytes. https://app.cochat.ai/papers/10.1016/s0021-9258(18)98977-5
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Salo, T., Lyons, J. G., Rahemtulla, F., Birkedal-Hansen, H., & Larjava, H. (1991). Transforming growth factor-beta 1 up-regulates type IV collagenase expression in cultured human keratinocytes. Journal of Biological Chemistry. https://doi.org/10.1016/s0021-9258(18)98977-5

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