Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
1982-1-20
pubmed:abstractText
An attempt was made to detect the serum factors inhibiting the G1-S transition in synchronized, baby rat hepatocytes. In untreated adult rat serum, this inhibitory activity was always linked to high molecular weight (HMW) compounds. Incubation of serum with trypsin or chymotrypsin resulted in the formation of a low molecular weight (LMW) G1-S inhibitory factor. The same result was obtained with fractions from adult rat liver but not with kidney or spleen fractions. Separation of the LMW factor by ultrafiltration increased its specific activity by about 10(3). The active period in the cell cycle of both the LMW and HMW factors was the same: the late G1 phase. However, the activity of the LMW factor was not blocked by the Kunitz factor. An enzymatic transformation of the HMW factor might be induced by liver cell membrane-bound proteases and constitute a mechanism regulating hepatocyte proliferation.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0008-8730
pubmed:author
pubmed:issnType
Print
pubmed:volume
14
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
601-9
pubmed:dateRevised
2003-11-14
pubmed:meshHeading
pubmed:year
1981
pubmed:articleTitle
Rat serum factors inhibiting the G1-S transition in hepatocytes. I. Production of a low molecular weight inhibitor by proteases or liver fractions.
pubmed:publicationType
Journal Article