Matches in SemOpenAlex for { <https://semopenalex.org/work/W2012344841> ?p ?o ?g. }
- W2012344841 endingPage "527" @default.
- W2012344841 startingPage "519" @default.
- W2012344841 abstract "Human cancers have an apparent low growth fraction, the bulk of cells presumed to being out of cycle in a G0 quiescent state due to the inability in the past to distinguish G0 from G1 cells. The allosteric M1 subunit of ribonucleotide reductase (M1-RR) is constitutively expressed by cycling cells (i.e., G1, S, G2-M). It is acquired during transition from G0 to G1, lost during exit to G0 and thus distinguishes G0 from G1 cells. To estimate the proportion of G0 and G1 cells in primary human breast (n = 5) and colorectal (n = 12) adenocarcinomas, we used both analytical DNA flow cytometry (ADFC) and immunoperoxidase staining of sections with the monoclonal antibody to M1-RR (MAb M1-RR). ADFC of fresh tumors revealed a low percentage of cells in the S phase (4.0 +/- 3.4%) but immunoperoxidase staining for M1-RR revealed an unexpectedly high proportion of positive cells (52.4 +/- 12.7%) in the G1, S, G2-M phases indicating a high G1 content of primary human tumors. Thus, human cancers are blocked in transition in G1 and are not predominantly in a G0 or quiescent differentiated state. This block was interpreted to mean that human cancers are responding to putative regulatory events at a restriction point in the G1 phase, such as relative growth factor deficiency, density inhibition, antiproliferative cytokines, or gene products. Using flow cytometry for both DNA and M1-RR content we found that human colon cancer cell lines arrest in the G1 but not G0 phase upon serum deprivation or density inhibition. Similarly, human breast cancer cell lines are arrested in G1 but not G0 phase by medroxyprogesterone acetate (MPA) or tamoxifen exposure. These findings match our in situ observations, and support the concept of a restriction point block in primary human tumors." @default.
- W2012344841 created "2016-06-24" @default.
- W2012344841 creator A5060322616 @default.
- W2012344841 creator A5073049108 @default.
- W2012344841 creator A5089455948 @default.
- W2012344841 date "1991-02-01" @default.
- W2012344841 modified "2023-09-25" @default.
- W2012344841 title "Quantitation of G0 and G1 phase cells in primary carcinomas. Antibody to M1 subunit of ribonucleotide reductase shows G1 phase restriction point block." @default.
- W2012344841 cites W1604895913 @default.
- W2012344841 cites W181242179 @default.
- W2012344841 cites W1903640231 @default.
- W2012344841 cites W1935791347 @default.
- W2012344841 cites W1944717769 @default.
- W2012344841 cites W1969172817 @default.
- W2012344841 cites W1973630430 @default.
- W2012344841 cites W1997313701 @default.
- W2012344841 cites W1997966212 @default.
- W2012344841 cites W1998755572 @default.
- W2012344841 cites W2013261931 @default.
- W2012344841 cites W2014704429 @default.
- W2012344841 cites W2016734648 @default.
- W2012344841 cites W2018708063 @default.
- W2012344841 cites W2025539276 @default.
- W2012344841 cites W2032448671 @default.
- W2012344841 cites W2036802451 @default.
- W2012344841 cites W2067824664 @default.
- W2012344841 cites W2071562811 @default.
- W2012344841 cites W2073131935 @default.
- W2012344841 cites W2074479483 @default.
- W2012344841 cites W2081327423 @default.
- W2012344841 cites W2089291850 @default.
- W2012344841 cites W2089619150 @default.
- W2012344841 cites W2091723114 @default.
- W2012344841 cites W2102415619 @default.
- W2012344841 cites W2103885797 @default.
- W2012344841 cites W2126486896 @default.
- W2012344841 cites W2133028092 @default.
- W2012344841 cites W2139928818 @default.
- W2012344841 cites W2142759605 @default.
- W2012344841 cites W2163565167 @default.
- W2012344841 cites W2171134803 @default.
- W2012344841 cites W2254058835 @default.
- W2012344841 cites W2409354634 @default.
- W2012344841 cites W2418900338 @default.
- W2012344841 cites W2422168446 @default.
- W2012344841 cites W2438977803 @default.
- W2012344841 cites W2439347261 @default.
- W2012344841 cites W4243914515 @default.
- W2012344841 cites W50501996 @default.
- W2012344841 doi "https://doi.org/10.1172/jci115026" @default.
- W2012344841 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/296339" @default.
- W2012344841 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/1991836" @default.
- W2012344841 hasPublicationYear "1991" @default.
- W2012344841 type Work @default.
- W2012344841 sameAs 2012344841 @default.
- W2012344841 citedByCount "23" @default.
- W2012344841 countsByYear W20123448412012 @default.
- W2012344841 countsByYear W20123448412013 @default.
- W2012344841 countsByYear W20123448412015 @default.
- W2012344841 countsByYear W20123448412016 @default.
- W2012344841 countsByYear W20123448412019 @default.
- W2012344841 crossrefType "journal-article" @default.
- W2012344841 hasAuthorship W2012344841A5060322616 @default.
- W2012344841 hasAuthorship W2012344841A5073049108 @default.
- W2012344841 hasAuthorship W2012344841A5089455948 @default.
- W2012344841 hasBestOaLocation W20123448411 @default.
- W2012344841 hasConcept C104292427 @default.
- W2012344841 hasConcept C104317684 @default.
- W2012344841 hasConcept C128102431 @default.
- W2012344841 hasConcept C1491633281 @default.
- W2012344841 hasConcept C153911025 @default.
- W2012344841 hasConcept C159654299 @default.
- W2012344841 hasConcept C203014093 @default.
- W2012344841 hasConcept C29537977 @default.
- W2012344841 hasConcept C4710235 @default.
- W2012344841 hasConcept C502942594 @default.
- W2012344841 hasConcept C542903549 @default.
- W2012344841 hasConcept C553184892 @default.
- W2012344841 hasConcept C55493867 @default.
- W2012344841 hasConcept C62112901 @default.
- W2012344841 hasConcept C86803240 @default.
- W2012344841 hasConceptScore W2012344841C104292427 @default.
- W2012344841 hasConceptScore W2012344841C104317684 @default.
- W2012344841 hasConceptScore W2012344841C128102431 @default.
- W2012344841 hasConceptScore W2012344841C1491633281 @default.
- W2012344841 hasConceptScore W2012344841C153911025 @default.
- W2012344841 hasConceptScore W2012344841C159654299 @default.
- W2012344841 hasConceptScore W2012344841C203014093 @default.
- W2012344841 hasConceptScore W2012344841C29537977 @default.
- W2012344841 hasConceptScore W2012344841C4710235 @default.
- W2012344841 hasConceptScore W2012344841C502942594 @default.
- W2012344841 hasConceptScore W2012344841C542903549 @default.
- W2012344841 hasConceptScore W2012344841C553184892 @default.
- W2012344841 hasConceptScore W2012344841C55493867 @default.
- W2012344841 hasConceptScore W2012344841C62112901 @default.
- W2012344841 hasConceptScore W2012344841C86803240 @default.
- W2012344841 hasIssue "2" @default.
- W2012344841 hasLocation W20123448411 @default.