G. Sconzo , M. La Rosa , M. La Farina , M.C. Roccheri , D. Oliva , G. Giudice
{"title":"Isolation and characterization of a sea urchin hsp 70 gene segment","authors":"G. Sconzo , M. La Rosa , M. La Farina , M.C. Roccheri , D. Oliva , G. Giudice","doi":"10.1016/0045-6039(88)90061-9","DOIUrl":"10.1016/0045-6039(88)90061-9","url":null,"abstract":"<div><p>Three clones containing <em>Paracentrotus lividus</em> sea urchin DNA sequences which cross-hybridize to <em>Drosophila</em> heat shock protein (hsp) 70 gene were isolated. The sequence arrangements in the three cloned DNA inserts were compared by restriction and cross-hybridization analysis. The results showed that they contain four different genes related to one <em>Drosophila</em> hsp 70 gene. One of these genes was subcloned, and two of the isolated fragments were shown to hybridize to genomic DNA and to RNA from heat-treated sea urchin embryo.</p></div>","PeriodicalId":75684,"journal":{"name":"Cell differentiation","volume":"24 2","pages":"Pages 97-104"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0045-6039(88)90061-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14335618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Membrane-induced segregation of motile and stable domains in cytoplasm: possible role in morphological differentiation of tissue cells","authors":"J.M. Vasiliev, I.M. Gelfand","doi":"10.1016/0045-6039(88)90059-0","DOIUrl":"10.1016/0045-6039(88)90059-0","url":null,"abstract":"<div><p>Many morphological differentiations and modulations involve alterations of degree of segregation in two types of cytoplasmic domains: lamellar-pseudopod-forming motile structures, actinoplasts, and non-motile cylindrical processes, tubuloplasts. Pronounced reversible segregation of actinoplasts and tubuloplasts can be induced in certain fibroblastic cells by phorbol ester. Analysis of this model reorganization suggests that formation of tubuloplasts from actinoplasts may involve local collapse of actin network and microtubule-directed translocation of actin material from collapsing zone; these cytoskeletal alterations may be controlled by membrane-activated regulatory enzymes.</p></div>","PeriodicalId":75684,"journal":{"name":"Cell differentiation","volume":"24 2","pages":"Pages 75-81"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0045-6039(88)90059-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14193521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Corticosterone effects on differentiation and X-ray-induced transformation of C3H/10T1/2 mouse cells","authors":"Duane L. Guernsey, Thomas J. Schmidt","doi":"10.1016/0045-6039(88)90067-X","DOIUrl":"10.1016/0045-6039(88)90067-X","url":null,"abstract":"<div><p>Glucocorticoid hormones have dramatic effects on cytodifferentiation and carcinogenesis in vitro and in vivo. We have investigated the effects of the endogenous rodent glucocorticoid hormone, corticosterone, on the X-irradiation-induced transformation and differentiation of C3H/10T1/2 mouse fibroblast cells in culture. Initially, we have demonstrated the presence of functional glucocorticoid receptors in these cells. We found that corticosterone has little effect on X-ray-induced transformation. However, this hormone alone was found to differentiate a high number of these fibroblastic cells to the adipogenic cell lineage. Using an antagonist to the glucocorticoid receptor, we demonstrate that the hormonal effect on differentiation is mediated by the corticosterone-receptor complex.</p></div>","PeriodicalId":75684,"journal":{"name":"Cell differentiation","volume":"24 2","pages":"Pages 159-164"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0045-6039(88)90067-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14335616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tina F. Jaskoll, Grace Don-Wheeler, Randall Johnson, Harold C. Slavkin
{"title":"Embryonic mouse lung morphogenesis and type II cytodifferentiation in serumless, chemically defined medium using prolonged in vitro cultures","authors":"Tina F. Jaskoll, Grace Don-Wheeler, Randall Johnson, Harold C. Slavkin","doi":"10.1016/0045-6039(88)90062-0","DOIUrl":"10.1016/0045-6039(88)90062-0","url":null,"abstract":"<div><p>The timing, position and mechanism(s) for determining type II cytodifferentiation during mammalian lung development are not known. To approach this problem, we have cultured Theiler stage 16 embryonic B10.A strain mouse lung primordia (12-days gestation, E12) in serumless, chemically defined medium in the presence or absence of dexamethasone (DEX) for periods up to 27 days in vitro. Morphogenesis and cytodifferentiation were evaluated by light and transmission electron microscopy, and immunochemical techniques. Pulmonary surfactant-associated apoproteins (PSAP) were initially expressed by type II cells at 16.5-day gestation in vivo. DEX-supplementation to the culture medium resulted in the accelerated expression of PSAP; the apoprotein isoforms (A<sub>1</sub>, A<sub>2</sub>, and A<sub>3</sub>) produced in vitro were comparable to those synthesized during fetal and postnatal in vivo development by high resolution, two-dimensional gel electrophoresis coupled with immunoblot staining. Cultures without DEX produced PSAP A<sub>2</sub> and A<sub>3</sub> isoforms, but did not produce A<sub>1</sub> (26–31 kDa, p<em>I</em> 5.2–5.3). DEX-treated cultures produced more lamellar bodies within type II cells than non-treated controls. The results demonstrate that long-term cultures of embryonic lung primordia express morphogenesis, cytodifferentiation and the synthesis and secretion of PSAP in the absence of exogenous hormones or growth factors. The data set further supports the hypothesis that morphogenesis and type II cytodifferentiation are regulated by autocrine and paracrine factors intrinsic to the embryonic lung developmental program and independent of exogenous hormone controls.</p></div>","PeriodicalId":75684,"journal":{"name":"Cell differentiation","volume":"24 2","pages":"Pages 105-117"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0045-6039(88)90062-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14193519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Spatial and temporal changes in the pattern of glycosylation of the developing chick limb tissue components as revealed by fluorescent conjugated lectin probes","authors":"J.M. Hurle , M.A. Ros , J.R. Hinchliffe","doi":"10.1016/0045-6039(88)90066-8","DOIUrl":"10.1016/0045-6039(88)90066-8","url":null,"abstract":"<div><p>The changing pattern of expression of glycoconjugates during the differentiation of the chick leg bud between stages 17 to 34 (days 3 to 8 of incubation) was studied using fluorochrome-labelled plant lectins. Limb buds were fixed in cold acetic-alcohol and wax-embedded. Agglutinins of peanut (PNA), soybean (SBA) and succinylated wheat germ (WGAs) revealed a specific binding pattern in the apical ectodermal ridge (AER) between Hamburger and Hamilton stages 19–32. These stages coincide with the period of elevation of the AER. This specific binding pattern was absent from the adjacent dorsal and ventral ectoderm. Prechondrogenic cells were positive for WGA and for PNA, and the PNA-binding capacity was intensified after neuraminidase treatment. Premyogenic cells at stage 23 can be identified as negative to PNA after neuraminidase, while the blood vessels became positive. PNA, SBA, WGA, WGAs and, in addition, <em>Ricinus communis</em> (RCA-I) lectins stained the basal membrane. Strands of extracellular matrix which connect with the basal membrane and cross the limb transversely between dorsal and ventral ectoderm were stained by RCA-I, SBA and PNA after neuraminidase.</p></div>","PeriodicalId":75684,"journal":{"name":"Cell differentiation","volume":"24 2","pages":"Pages 149-158"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0045-6039(88)90066-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14335615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
C. Rochette-Egly, B. Lacroix, K. Haffen, M. Kedinger
{"title":"Expression of brush border calmodulin-binding proteins during human small and large bowel differentiation","authors":"C. Rochette-Egly, B. Lacroix, K. Haffen, M. Kedinger","doi":"10.1016/0045-6039(88)90063-2","DOIUrl":"10.1016/0045-6039(88)90063-2","url":null,"abstract":"<div><p>The expression and immunocytochemical localization of three brush border cytoskeletal calmodulin-binding proteins, caldesmon, fodrin, and the 110 kDa subunit of the 110 kDa calmodulin complex, have been studied in human intestinal epithelial cells as a function of their ontogenic differentiation. At immature stages (fetal week 8), caldesmon and fodrin were present in undifferentiated intestinal epithelial cells. However, no 110 kDa protein was detectable except a 135 kDa immunoreactive species. The 110 kDa form appeared at week 12, when microvilli differentiate, and became prominent at week 14 simultaneously with the disappearance of the 135 kDa species. Finally at week 14, the calmodulin-binding protein pattern was identical to that found in adults. Immunocytochemical experiments revealed that at week 8, antibodies to caldesmon and fodrin gave a fluorescence lining at the periphery of the cells, whereas the 110 kDa immunoreactive species was hardly detectable. Then, as early as week 12 of gestation, with the three antisera, a bright fluorescence lined the apex of the cells, as in adults. In the colon, the events were delayed. This study demonstrates that the developmental pattern of the three calmodulin-binding proteins investigated, caldesmon, fodrin and the 110 kDa subunit, parallels the temporal differentiation of human intestinal brush borders and the proximo-distal morphological intestinal maturation.</p></div>","PeriodicalId":75684,"journal":{"name":"Cell differentiation","volume":"24 2","pages":"Pages 119-131"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0045-6039(88)90063-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14193520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Lectin activity and distribution of chicken lactose lectin I in the extracellular matrix of the chick developing kidney","authors":"Eliane Didier , Pierre Didier , Danielle Bayle , Michelle Chevalier","doi":"10.1016/0045-6039(88)90060-7","DOIUrl":"10.1016/0045-6039(88)90060-7","url":null,"abstract":"<div><p>A lectin activity inhibitable by thiodigalactose, <em>N</em>-acetyllactosamine, lactulose, lactose and by an antibody raised against CLL I (chicken-lactose lectin I) has been investigated in the chick embryo developing kidney. At post-induction stages this activity was found in both mesonephros and metanephros. In immunofluorescence and immunoelectron microscopy, the extracellular distribution of CLL I was similar in the mesonephros and the metanephros. The lectin was never found intracellularly; cultured kidney cells did not express any endogenous lectin but were rich in lectin-receptor sites, which led to the hypothesis that CLL I is not produced in situ but could be adsorbed on renal cells. Potential physiological roles for embryonic lectins are discussed.</p></div>","PeriodicalId":75684,"journal":{"name":"Cell differentiation","volume":"24 2","pages":"Pages 83-95"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0045-6039(88)90060-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14335617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Koji Goto, Shigeo Hayashi, Yasuaki Shirayoshi, Masatoshi Takeichi, Hisato Kondoh
{"title":"Exogenous δ-crystallin gene expression as probe for differentiation of teratocarcinoma stem cells","authors":"Koji Goto, Shigeo Hayashi, Yasuaki Shirayoshi, Masatoshi Takeichi, Hisato Kondoh","doi":"10.1016/0045-6039(88)90065-6","DOIUrl":"10.1016/0045-6039(88)90065-6","url":null,"abstract":"<div><p>We developed an experimental system in which differentiation of teratocarcinoma stem cell is probed by expression of stably introduced exogenous genes. We used chicken δ-crystallin gene (δ gene) and its derivative (Moδ gene) driven by long terminal repeat (LTR) promoter of Moloney murine leukemia virus (Mo-MuLV). Neither of the genes was expressed in the undifferentiated condition. Differentiation to primitive endoderm induced by retinoic acid (RA) led to expression of δ but not Moδ, while differentiation to more advanced endodermal cells by RA plus dibutyryl cAMP elicited Moδ expression in addition to δ. These results are interpreted as a consequence of differential activation/suppression of gene expression through enhancer elements associated with the genes.</p></div>","PeriodicalId":75684,"journal":{"name":"Cell differentiation","volume":"24 2","pages":"Pages 139-147"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0045-6039(88)90065-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14335614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Suzuki , S. Komatsu , H. Kitai , Y. Endo , R. Iizuka , T. Fukasawa
{"title":"Analysis of cytoplasmic factors in developmental cleavage of mouse embryo","authors":"S. Suzuki , S. Komatsu , H. Kitai , Y. Endo , R. Iizuka , T. Fukasawa","doi":"10.1016/0045-6039(88)90064-4","DOIUrl":"10.1016/0045-6039(88)90064-4","url":null,"abstract":"<div><p>One-cell embryos from certain mouse strains were found incapable of developing beyond the 2-cell stage in vitro (2-cell block), but a microinjection of EDTA effectively overcame this block. When 2-cell arrested embryos were fused with embryos that had developed to the late 2-cell stage in vivo, the fusants developed beyond the 2-cell stage. Microinjection of cytoplasm of in vivo 2-cell embryos into 1-cell embryos also obviated the 2-cell block. Analyses of <sup>35</sup>S-labeled embryos by 2-dimensional polyacrylamide gel electrophoresis indicated changes in synthetic protein patterns possibly related to this block.</p></div>","PeriodicalId":75684,"journal":{"name":"Cell differentiation","volume":"24 2","pages":"Pages 133-138"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0045-6039(88)90064-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14274719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Regulation of tubulin and actin synthesis and accumulation during Blastocladiella emersonii development","authors":"Aline M. da Silva, Maria Helena Juliani","doi":"10.1016/0045-6039(88)90085-1","DOIUrl":"10.1016/0045-6039(88)90085-1","url":null,"abstract":"<div><p>Actin and α and β-tubulin have been identified in <em>Blastocladiella emersonii</em> by two-dimensional gel electrophoresis and Western blotting. The kinetics of synthesis of these proteins were compared by pulse-labeling experiments with [<sup>35</sup>S]methionine and with the accumulation of their corresponding mRNAs, translated in a cell-free system. Large increases occur in the rates of actin and α- and β-tubulin biosynthesis during sporulation and there is an accumulation of the corresponding mRNAs. In parallel to the increased synthesis, these cytoskeletal proteins accumulate during the late stage of sporulation.</p></div>","PeriodicalId":75684,"journal":{"name":"Cell differentiation","volume":"24 1","pages":"Pages 45-54"},"PeriodicalIF":0.0,"publicationDate":"1988-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0045-6039(88)90085-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14535176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}