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Zhang XD, Luo Q, Du Y, Yang L, Yu LC, Feng L, Rao D, Tang JX, Tan HM, Guo XY, Tang SS, Liu T, Yue F, Huang HX. The Allostery and Modification of hGHRH Molecules and Specific Dimer Produced Significant Fertility Effect by Proliferating and Activating in-situ Ovarian Mesenchymal Stem Cells. Eur J Pharm Sci 2024:106768. [PMID: 38643940 DOI: 10.1016/j.ejps.2024.106768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 03/23/2024] [Accepted: 04/13/2024] [Indexed: 04/23/2024]
Abstract
The negative coordination of growth hormone secretagogue receptor (GHS-R) and growth hormone-releasing hormone receptor (GHRH-R) involves in the repair processes of cellular injury. The allosteric U- or H-like modified GHRH dimer Grinodin and 2Y were comparatively evaluated in normal Kunming mice and hamster infertility models induced by CPA treatment. 1-3-9 µg of Grinodin or 2Y per hamster stem-cell-exhaustion model was subcutaneously administered once a week, respectively inducing 75-69-46 or 45-13-50% of birth rates. In comparison, the similar mole of human menopausal gonadotropin (hMG) or human growth hormone (hGH) was administered once a day but caused just 25 or 20% of birth rates. Grinodin induced more big ovarian follicles and corpora lutea than 2Y, hMG, hGH. The hMG-treated group was observed many distorted interstitial cells and more connective tissues and the hGH-treated group had few ovarian follicles. 2Y had a plasma lifetime of 21 days and higher GH release in mice, inducing lower birth rate and stronger individual specificity in reproduction as well as only promoting the proliferation of mesenchymal-stem-cells (MSCs) in the models. In comparison, Grinodin had a plasma lifetime of 30 days and much lower GH release in mice. It significantly promoted the proliferation and activation of ovarian MSCs together with the development of follicles in the models by increasing Ki67 and GHS-R expressions, and decreasing GHRH-R expression in a dose-dependent manner. However, the high GH and excessive estrogen levels in the models showed a dose-dependent reduction in fertility. Therefore, unlike 2Y, the low dose of Grinodin specifically shows low GHS-R and high GHRH-R expressions thus evades GH and estrogen release and improves functions of organs, resulting in an increase of fertility.
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Affiliation(s)
- Xu-Dong Zhang
- Department of Clinical Laboratories & Pathology, Guangdong Provincial Cops Hospital of Chinese People's Armed Police Forces, Guangzhou 510507
| | - Qun Luo
- Research &Development Department, Shenzhen Finepeptide Biopharmaceutical Company LTD, Shenzhen 518107, China
| | - Yan Du
- Department of Clinical Laboratories & Pathology, Guangdong Provincial Cops Hospital of Chinese People's Armed Police Forces, Guangzhou 510507
| | - Li Yang
- Department of Digestive & Endocrinology, Guangdong Provincial Cops Hospital of Chinese People's Armed Police Forces, Guangzhou 510507
| | - Li-Cheng Yu
- Department of Digestive & Endocrinology, Guangdong Provincial Cops Hospital of Chinese People's Armed Police Forces, Guangzhou 510507
| | - Lan Feng
- Department of Biochemistry and Molecular Biology, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Dan Rao
- Department of Biochemistry and Molecular Biology, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Jing-Xuan Tang
- Department of Chemistry, College of Literature, Science, and the Arts, University of Michigan-Ann Arbor, Ann Arbor 48109, United States of America
| | - Hong-Mei Tan
- Department of Clinical Laboratories, Luopu Street Lijiang Community Health Service Station, Guangzhou 511431, China
| | - Xiao-Yuan Guo
- Department of Pathology, Sanya People's Hospital, Sanya City 572000, Hainan Province, China
| | - Song-Shan Tang
- Department of Biochemistry and Molecular Biology, Guangdong Pharmaceutical University, Guangzhou 510006, China..
| | - Tao Liu
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, School of Basic Medical Sciences, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Feng Yue
- Department of Clinical Laboratories, Guangzhou Tianhe District Hospital of Traditional Chinese Medicine, Guangzhou 510655, China
| | - Hui-Xian Huang
- Department of Digestive & Endocrinology, Guangdong Provincial Cops Hospital of Chinese People's Armed Police Forces, Guangzhou 510507
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