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- Scopus: eid_2-s2.0-0028882740
- PMID: 7585579
- WOS: WOS:A1995TD88700021
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Article: Failure to dephosphorylate retinoblastoma protein in drug-resistant cells
Title | Failure to dephosphorylate retinoblastoma protein in drug-resistant cells |
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Authors | |
Issue Date | 1995 |
Citation | Cancer Research, 1995, v. 55 n. 22, p. 5222-5225 How to Cite? |
Abstract | Hypophosphorylation of retinoblastoma protein (RB) accompanies the DNA damage-induced, p53-independent G1 arrest and apoptosis in two p53-null human leukemic cell lines, HL-60 and U937 (Q. P. Dou et al., Proc. Natl. Acad. Sci. USA, 92: 9019-9023, 1995). When an HL-60 cell line resistant to cytosine arabinoside was exposed to this DNA-damaging agent, neither RB hypophosphorylation nor apoptosis were observed. In contrast, treatment of these cells with another DNA-damaging agent, etoposide, dramatically induced these events, which were inhibitable by the addition of zinc chloride, a protein tyrosine phosphatase inhibitor. Induction of hypophosphorylation of RB may be an important novel strategy for treating drug-resistant cancers. |
Persistent Identifier | http://hdl.handle.net/10722/194104 |
ISSN | 2021 Impact Factor: 13.312 2020 SCImago Journal Rankings: 4.103 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Dou, QP | - |
dc.contributor.author | Lui, VWY | - |
dc.date.accessioned | 2014-01-30T03:32:10Z | - |
dc.date.available | 2014-01-30T03:32:10Z | - |
dc.date.issued | 1995 | - |
dc.identifier.citation | Cancer Research, 1995, v. 55 n. 22, p. 5222-5225 | - |
dc.identifier.issn | 0008-5472 | - |
dc.identifier.uri | http://hdl.handle.net/10722/194104 | - |
dc.description.abstract | Hypophosphorylation of retinoblastoma protein (RB) accompanies the DNA damage-induced, p53-independent G1 arrest and apoptosis in two p53-null human leukemic cell lines, HL-60 and U937 (Q. P. Dou et al., Proc. Natl. Acad. Sci. USA, 92: 9019-9023, 1995). When an HL-60 cell line resistant to cytosine arabinoside was exposed to this DNA-damaging agent, neither RB hypophosphorylation nor apoptosis were observed. In contrast, treatment of these cells with another DNA-damaging agent, etoposide, dramatically induced these events, which were inhibitable by the addition of zinc chloride, a protein tyrosine phosphatase inhibitor. Induction of hypophosphorylation of RB may be an important novel strategy for treating drug-resistant cancers. | - |
dc.language | eng | - |
dc.relation.ispartof | Cancer Research | - |
dc.title | Failure to dephosphorylate retinoblastoma protein in drug-resistant cells | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.pmid | 7585579 | - |
dc.identifier.scopus | eid_2-s2.0-0028882740 | - |
dc.identifier.volume | 55 | - |
dc.identifier.issue | 22 | - |
dc.identifier.spage | 5222 | - |
dc.identifier.epage | 5225 | - |
dc.identifier.isi | WOS:A1995TD88700021 | - |
dc.identifier.issnl | 0008-5472 | - |