Johnston Shirley, Rhodes Linda
Director of Scientific Research, Found Animals Foundation, Los Angeles, California, USA Email:
Board of Directors, Alliance for Contraception in Cats & Dogs (ACC&D), Portland, Oregon, USA Email:
J Feline Med Surg. 2015 Sep;17(9):777-82. doi: 10.1177/1098612X15594992.
For many years, researchers have been studying reproduction of cats and dogs, including approaches to non-surgical sterilization, but scant funding has been available for this work. Recognizing the need to fund research and to attract researchers from the biomedical community to apply their expertise to this area, the Michelson Prize & Grants (MPG) in Reproductive Biology program was founded. Since 2009, it has funded 34 research projects in seven countries toward discovery of a safe single-administration lifetime non-surgical sterilant in male and female cats and dogs.
The goal of the MPG program is the reduction or elimination of the approximately 2.7 million deaths of healthy shelter cats and dogs in the US every year. The successful product is expected to be a single-dose injectable product approved by the US Food and Drug Administration as a veterinary prescription item. The most optimistic prediction is that such a product will reach the hands of practicing veterinarians within the next decade.
Active research is in progress using approaches such as immunocontraception with a single-administration vaccine against gonadotropin releasing hormone (GnRH). Long-term therapy with GnRH agonists such as deslorelin administered in controlled-release devices is also being studied. Other scientists are targeting cells in the brain or gonads with cytotoxins, such as are used in cancer chemotherapy. Gene therapy expressing proteins that suppress reproduction and gene silencing of peptides essential to reproduction are further avenues of research. Findings are available at www.michelsonprizeandgrants.org/michelson-grants/research-findings.
多年来,研究人员一直在研究猫和狗的繁殖,包括非手术绝育方法,但这项工作的资金匮乏。认识到需要资助研究并吸引生物医学领域的研究人员将他们的专业知识应用于该领域,生殖生物学领域的迈克尔逊奖与资助(MPG)项目应运而生。自2009年以来,该项目已在七个国家资助了34个研究项目,旨在发现一种安全的单剂量终身非手术绝育剂,用于雄性和雌性猫和狗。
MPG项目的目标是减少或消除美国每年约270万只健康收容所猫和狗的死亡。成功的产品预计将是一种单剂量注射产品,经美国食品药品监督管理局批准作为兽医处方药。最乐观的预测是,这样的产品将在未来十年内交到执业兽医手中。
正在进行积极的研究,采用的方法包括使用针对促性腺激素释放激素(GnRH)的单剂量疫苗进行免疫避孕。也在研究使用如缓释装置中给予的戈那瑞林等GnRH激动剂进行长期治疗。其他科学家正将细胞毒素靶向大脑或性腺中的细胞(就像癌症化疗中使用的那样)。表达抑制繁殖的蛋白质的基因治疗以及对繁殖所必需的肽进行基因沉默是进一步的研究途径。研究结果可在www.michelsonprizeandgrants.org/michelson-grants/research-findings上获取。