PMID- 7554934 OWN - NLM STAT- MEDLINE DCOM- 19951106 LR - 20190920 IS - 0300-8207 (Print) IS - 0300-8207 (Linking) VI - 32 IP - 1-4 DP - 1995 TI - Analysis of tooth development in mice bearing a TGF-beta 1 null mutation. PG - 41-6 AB - While transforming growth factor-beta 1 (TGF-beta 1) and its related mammalian isoforms TGF-beta 2 and TGF-beta 3 are coexpressed in developing tooth organs, the specific biological role of each isoform is unknown. To delineate the role of TGF-beta 1 in odontogenesis, we have studied tissues from mice that lack a functional TGF-beta 1 gene. Histologic analyses revealed that in TGF-beta 1 (-/-) mice, tooth morphogenesis, cytodifferentiation and histogenesis were unaffected. Using in situ hybridization we studied the patterns of distribution of TGFs-beta 1, beta 2 and beta 3 in the TGF-beta 1 (+/+, +/- and -/-) genotypes. Our results indicate no detectable TGF-beta 1 mRNA in null tissues while TGFs-beta 2 and beta 3 showed normal temporal-spatial patterns of distribution. Using antibodies against TGF-beta 1, we observed immunoreactive TGF-beta 1 in tissues from null mice suggesting that maternally-derived TGF-beta 1 may be involved in the rescue of several developmental events in TGF-beta 1 knockout mice. FAU - D'Souza, R N AU - D'Souza RN AD - University of Texas-Houston Health Science Center, Dental Branch 77030, USA. FAU - Litz, M AU - Litz M LA - eng PT - Journal Article PL - England TA - Connect Tissue Res JT - Connective tissue research JID - 0365263 RN - 0 (Antibodies) RN - 0 (RNA, Messenger) RN - 0 (Transforming Growth Factor beta) SB - IM MH - Animals MH - Antibodies MH - Cell Differentiation/genetics MH - Dental Papilla/cytology/metabolism MH - Enamel Organ/cytology/metabolism MH - Gene Expression Regulation, Developmental MH - Genotype MH - Heterozygote MH - Homozygote MH - In Situ Hybridization MH - Mice MH - Mice, Knockout MH - Morphogenesis/genetics MH - Mutation/*genetics MH - Odontogenesis/*genetics MH - RNA, Messenger/genetics MH - Tooth Germ/cytology/metabolism MH - Transforming Growth Factor beta/*genetics EDAT- 1995/01/01 00:00 MHDA- 1995/01/01 00:01 CRDT- 1995/01/01 00:00 PHST- 1995/01/01 00:00 [pubmed] PHST- 1995/01/01 00:01 [medline] PHST- 1995/01/01 00:00 [entrez] AID - 10.3109/03008209509013704 [doi] PST - ppublish SO - Connect Tissue Res. 1995;32(1-4):41-6. doi: 10.3109/03008209509013704.