In oocytes, the translation of many dormant mRNAs is regulated by the length of the poly (A) tail. The poly (A) status is controlled by a conserved sequence present in the 3' untranslated region (UTR), designated the adenylation control element (ACE). We will exploit this regulatory scheme to study the control of mouse oogenesis and early development as follows: 1. Using the ACE sequence, we will selectively clone a set of mRNAs whose expression is under poly (A)-dependent translational control. Using a variety of approaches, we will systematically address the significance and function of these mRNAs in early mouse development. 2. We will perform a mutagenic analysis of the ACE element and surrounding sequences to investigate the exact requirements for both shortening and elongation of the poly (A) tail. These experiments may shed light on the mechanism by which different dormant mRNAs are activated for translation at various times in development. 3. We will investigate the molecular aspects of cytoplasmic regulation of poly (A) tail length in mouse oocytes. Using probes directed against molecules that participate in nuclear polyadenylation from other species, we will attempt to identify the mouse oocyte factors which interact with the cytoplasmic dormant mRNAs and control their poly (A) status. These factors could then be used to isolate other novel components of the system.

Agency
National Institute of Health (NIH)
Institute
Eunice Kennedy Shriver National Institute of Child Health & Human Development (NICHD)
Type
Research Project (R01)
Project #
5R01HD025922-07
Application #
2199755
Study Section
Reproductive Biology Study Section (REB)
Project Start
1989-09-01
Project End
1998-07-31
Budget Start
1995-08-01
Budget End
1996-07-31
Support Year
7
Fiscal Year
1995
Total Cost
Indirect Cost
Name
State University New York Stony Brook
Department
Pharmacology
Type
Schools of Medicine
DUNS #
804878247
City
Stony Brook
State
NY
Country
United States
Zip Code
11794
Salles, F J; Strickland, S (1999) Analysis of poly(A) tail lengths by PCR: the PAT assay. Methods Mol Biol 118:441-8
Verrotti, A C; Strickland, S (1997) Oocyte selection of mutations affecting cytoplasmic polyadenylation of maternal mRNAs. Mol Reprod Dev 46:482-8
Wells, J M; Strickland, S (1997) Regulated localization confers multiple functions on the protease urokinase plasminogen activator. J Cell Physiol 171:217-25
West, M F; Verrotti, A C; Salles, F J et al. (1996) Isolation and characterization of two novel, cytoplasmically polyadenylated, oocyte-specific, mouse maternal RNAs. Dev Biol 175:132-41
Verrotti, A C; Thompson, S R; Wreden, C et al. (1996) Evolutionary conservation of sequence elements controlling cytoplasmic polyadenylylation. Proc Natl Acad Sci U S A 93:9027-32
Salles, F J; Strickland, S (1995) Rapid and sensitive analysis of mRNA polyadenylation states by PCR. PCR Methods Appl 4:317-21
Wells, J M; Strickland, S (1994) Aprotinin, a Kunitz-type protease inhibitor, stimulates skeletal muscle differentiation. Development 120:3639-47
Carroll, P M; Richards, W G; Darrow, A L et al. (1993) Preimplantation mouse embryos express a cell surface receptor for tissue-plasminogen activator. Development 119:191-8
Andrade-Gordon, P; Wang, S Y; Strickland, S (1992) Heparin-like activity in porcine follicular fluid and rat granulosa cells. Thromb Res 66:475-87
Huarte, J; Stutz, A; O'Connell, M L et al. (1992) Transient translational silencing by reversible mRNA deadenylation. Cell 69:1021-30

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