2000
DOI: 10.1016/s0021-9258(19)65123-9
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p21 is an assembly factor required for platelet-derived growth factor-induced vascular smooth muscle cell proliferation.

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Cited by 4 publications
(4 citation statements)
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“…Thus far, the most widely reported method for attenuation of p21 which has potential clinical applicability has been the use of antisense techniques, either by transfection of an antisense oligodeoxynucleotide (ODN) or by utilizing antisense plasmid technology. We showed that transfection of a 21 bp antisense p21 ODN results in attenuation of rat VSM cell growth (Weiss et al, 2000), and another group showed that this same ODN induced apoptosis in other VSM cell lines (Zhang et al, 2003). A human ODN, homologous to the rat one above, promoted apoptosis in both T47D and MCF7 human breast cancer cell lines (Fan et al, 2003), and a different antisense p21 ODN caused irradiated HCT116 human colon cancer cells to convert from growth arrest to apoptosis (Tian et al, 2000).…”
Section: Therapeutic Possibilities Of P21 Manipulation In Cancermentioning
confidence: 94%
See 1 more Smart Citation
“…Thus far, the most widely reported method for attenuation of p21 which has potential clinical applicability has been the use of antisense techniques, either by transfection of an antisense oligodeoxynucleotide (ODN) or by utilizing antisense plasmid technology. We showed that transfection of a 21 bp antisense p21 ODN results in attenuation of rat VSM cell growth (Weiss et al, 2000), and another group showed that this same ODN induced apoptosis in other VSM cell lines (Zhang et al, 2003). A human ODN, homologous to the rat one above, promoted apoptosis in both T47D and MCF7 human breast cancer cell lines (Fan et al, 2003), and a different antisense p21 ODN caused irradiated HCT116 human colon cancer cells to convert from growth arrest to apoptosis (Tian et al, 2000).…”
Section: Therapeutic Possibilities Of P21 Manipulation In Cancermentioning
confidence: 94%
“…Regardless of the stoichiometry and PCNA binding arguments, and based on the previously mentioned finding that p21/cyclin/CDKs can exist in active complexes, more recent work in our and other laboratories has led to the discovery that p21 is required for G1→S phase progression in at least some cell types. The role for p21 as an assembly factor for cyclin D1/CDK4 complexes (Weiss et al, 2000;LaBaer et al, 1997) helps explain the heretofore mysterious result that p21 levels are increased soon after mitogen stimulation. Data is emerging showing that, in addition to its growth inhibitory role, p21 can function in a positive fashion toward cell proliferation (Dong et al, 2003;Dupont et al, 2003;Zhang et al, 2003), a finding, of course, with practical relevance toward cancer therapy.…”
mentioning
confidence: 99%
“…Αν και οι παραπάνω πληροφορίες συμφωνούν με το συμπέρασμα, ότι η ρ21 δρα ως αναστολέας της προόδου του κυτταρικού κύκλου, αρκετές πρόσφατες μελέτες έχουν δείξει ότι η ρ21 λειτουργεί επίσης ως θετικός ρυθμιστής του κυτταρικού κύκλου. Μολονότι έχει δειχθεί ότι η ρ21 αναστέλλει μεν τα σύμπλοκα κυκλίνη E-CDK2, συμμετέχει δε στη συγκρότηση και την ενεργοποίηση των συμπλοκών κυκλίνης D1-CDK4/6, τα οποία δρουν ως αισθητήρες αυξητικών παραγόντων στη G1/S φάση του κυτταρικού κύκλου (LaBaer et al, 1997;Cheng et al, 1999;Weiss et al, 2000).…”
Section: η υπεροικογένεια τουunclassified
“…Αντίθετα, σε κύτταρα JurkatBcl-2 υπήρχε μια αυξορρύθμιση των ρ21 και ρ27 και τα επίπεδα έκφρασης της ρ21 παρέμειναν αμετάβλητα μετά τη χορήγηση 2-ΜΕ, δείχνοντας ότι πιθανά η υπερέκφραση της Bcl-2 να ενισχύει τη σταθερότητα της ρ21. Σύμφωνα με πρόσφατες μελέτες η πρωτεΐνη ρ21 δεν έχει μόνο ανασταλτικές δράσεις στην πορεία του κυτταρικού κύκλου, αλλά είναι δυνατό να δρα και ως θετικός ρυθμιστής αυτού (Sherr and Roberts, 1999;Cheng et al, 1999;Weiss et al, 2000;Ying et al, 2002) αλλά και να παίζει σημαντικό ρόλο στην αύξηση της κυτταρικής επιβίωσης (Gorospe et al, 1999).…”
Section: -μεunclassified