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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1986-6-27
pubmed:abstractText
Olfactory receptor neurons undergo continual replacement with new cells differentiating from a population of basal cells located in the olfactory epithelium. We have previously described the isolation of a cell line from murine olfactory epithelium (MOE CL1) which is now shown to be sensitive to two differentiation promoting agents, dibutyryladenosine 3',5'-cyclic monophosphate (db-cAMP) and 12-O-tetradecanoylphorbol-13-acetate (TPA). Cells grown in the presence of db-cAMP or TPA, after a lag phase of 72-96 h, became bipolar, with long neurite-like processes. Cells conditioned for at least one passage in db-cAMP or TPA, or cells exposed to a mixture of db-cAMP and TPA, attained a bipolar morphology within 24 h. Cultures grown with db-cAMP, TPA or db-cAMP + TPA showed significant increases in the percentage of process-bearing cells. An increase in population doubling time and decrease in saturation density were also observed in cultures exposed to db-cAMP. Cells exposed to TPA continued to divide at the same rate as control cells, while those treated with db-cAMP + TPA underwent terminal differentiation. Peripheral-type benzodiazepine binding sites, which within the olfactory epithelium are localized on the receptor neurons, were present in homogenate membranes of undifferentiated cells. Cells differentiated by exposure to db-cAMP + TPA for 7 days showed a 65% increase in the density (Bmax) of peripheral-type benzodiazepine binding sites. Undifferentiated cells in control cultures showed no spontaneous changes in membrane potential or regenerative responses during current injection. Small, bipolar cells in morphologically differentiated cultures, however, were capable of generating several types of spontaneous changes in membrane potential including slow, regular oscillations; irregular, slow and fast depolarizations; and trains of action potentials.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0006-8993
pubmed:author
pubmed:issnType
Print
pubmed:day
9
pubmed:volume
370
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
205-14
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1986
pubmed:articleTitle
Differentiation of a cell line from olfactory epithelium is induced by dibutyryladenosine 3',5'-cyclic monophosphate and 12-O-tetradecanoylphorbol-13-acetate.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.