摘要:
A method of promoting or blocking fertilization, which method includes the step of contacting sperm either at the time of sperm capacitation or at the time of egg fertilization with an effective amount of bombesin or its analog capable of stimulating or inhibiting the acrosome reaction.
摘要:
This invention provides isolated nucleic acid encoding sperm-specific protein kinase A anchoring proteins from mammalian species, recombinant expression constructs encoding said mammalian sperm-specific protein kinase A anchoring proteins, cells transformed with said constructs, and homogenous preparations of these proteins prepared using recombinant genetic techniques. The invention also provides analytic tools such as polyclonal antisera and monoclonal antibodies specific for said sperm-specific protein kinase A anchoring proteins of the invention. The invention also provides methods for isolating nucleic acid encoding mammalian sperm-specific protein kinase A anchoring proteins and recombinant genetic methods for producing said mammalian sperm-specific protein kinase A anchoring proteins of the invention. The invention particularly provides high throughput screening methods for screening compounds that can disrupt binding between protein kinase A and the sperm-specific protein kinase A anchoring protein and methods for determining and producing compounds, particularly antisense oligonucleotides, for inhibiting or preventing expression of sperm-specific protein kinase A anchoring protein in sperm, spermatids, or progenitor cells thereof. These methods are useful for development of effective, male-specific contraceptives, which are also provided by the invention.
摘要:
The present invention includes a pharmaceutical composition having an effective contraceptive amount of a synthetic peptide that includes an amphipathic .alpha.-helix domain that binds to an RII subunit of protein kinase A, and competitively inhibits the binding of protein kinase A to sperm A kinase anchoring proteins. Particular disclosed synthetic peptides having this activity include s-Ht31: N-Stearate-DLIEEAASRIVDAVIEQVKAAGAY (SEQ ID No. 9), s-Ht31-P: N-Stearate-DLIEEAASRPVDAVPEQVKAAGAY (SEQ ID No. 10), and s-AKAP79: N-Stearate-YETLLIETASSLVKNAIQLSIE (SEQ ID No. 11). The invention also includes methods of inhibiting sperm motility, by exposing them to an effective amount of the peptide, for example by placing the pharmaceutical composition (such as a suppository, foam, cream, or gel) in the vagina.
摘要翻译:本发明包括具有有效避孕量的合成肽的药物组合物,其包括结合蛋白激酶A的RII亚基的两亲性α-螺旋结构域,并且竞争性地抑制蛋白激酶A与精子A激酶锚定蛋白的结合 。 特别公开的具有这种活性的合成肽包括s-Ht31:N-硬脂酸酯-DLIEEAASRIVDAVIEQVKAAGAY(SEQ ID No.9),s-Ht31-P:N-硬脂酸酯-DLIEEAASRPVDAVPEQVKAAGAY(SEQ ID No.10)和s-AKAP79:N - 硬脂酸酯YETLLIETASSLVKNAIQLSIE(SEQ ID No.11)。 本发明还包括通过将它们暴露于有效量的肽,例如通过将药物组合物(例如栓剂,泡沫,乳膏或凝胶)放置在阴道中来抑制精子活力的方法。
摘要:
A pure DNA encoding a peptide which is capable of promoting acrosome reaction and the encoded peptide. Also disclosed are a vector and a cell containing such a DNA, a pharmaceutical composition which includes such a peptide, a method of promoting fertilization using such a peptide, and a method of preparing such a peptide by recombinant technology.