Potential Therapeutic Methods in Reproductive Aging

A special issue of Pharmaceuticals (ISSN 1424-8247).

Deadline for manuscript submissions: closed (30 November 2024) | Viewed by 2011

Special Issue Editor

Infertility Research Institute, Pohang Women’s Hospital, Pohang 37754, Republic of Korea
Interests: ovarian aging; ovarian angiogenesis; female infertilty; ovarian microenviroment

Special Issue Information

Dear Colleagues,

Reproductive aging is a natural process that occurs in all women, eventually leading to fertility reduction and menopause. In recent decades, women’s life expectancy has been prolonged by as much as 30 years, but the onset of menopause has only been pushed back by apporximately 3–4 years. This means that a woman may spend a large period of her later life in poor health.  In additon, ovarian aging remains a difficult problem in infertility treatment. In this respect, targeting ovarian longevity is very improatnt in terms of delayng the on-set of menopause, improving fertility, and further improving the health of women. For this reason, interest in the field of ovarian longevity, including ovarian rejuvernation, has increased in recent years. As a consequence, many reserarchers  have conducted studies to overcome and rejuvenate ovarian aging. Such studies included the improvement of ovarian microenvironment through the stimulation of ovarian angiogenesis and the reduction of ovarian oxidative stress using pharmacological strategies;  the activation of dormant primordial follicles and ovarian stem cells  through the PI3K/PTEN/AKT/FOXO3 signaling pathway; and the improvement of ovarian function using various stem cells, such as bone marrow-derived stem cells, umbilical cord mesenchymal stem cells, and platelet-rich plasma.  Recently, some promising outcomes have been introduced as potential therapeutic methods in reproductive aging. This Special Issue intends to summarize the state of the art, the latest findings published in the the field of ovarian longeivity and ovarian rejuvernation, as well as elucidate future directions.

  1. Stem cells as potential therapeutics in reproducitve agiung
  2. Antioxidants as potential therapeutics in reproducitve agiung
  3. Angiogenic factors as potential therapeutics in reproducitve agiung
  4. Activartors of dormant promordial follicle and ovarian stem cells as potential therapeutics in reproducitve agiung
  5. Cryopreservation of oocytes and ovaian tissues as potential therapeutics in reproducitve agiung

Dr. Bosun Joo
Guest Editor

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Keywords

  • ovarian aging
  • menopause
  • infertility
  • ovarian longevity/rejuvernation
  • angiogenesis
  • antioxidant
  • stem cells
  • platelet-rich plasma

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Published Papers (1 paper)

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Research

20 pages, 5506 KiB  
Article
OR2H2 Activates CAMKKβ–AMPK–Autophagy Signaling Axis and Suppresses Senescence in VK2/E6E7 Cells
by Ji Min Kim, Sina Dziobaka, Ye Eun Yoon, Ha Lim Lee, Ji Hyun Jeong, In-Ryeong Lee, Daniel Weidinger, Changwon Yang, Deokho Kim, Yalcin Gulperi, Cheol-Koo Lee, Jeongwon Sohn, Gwonhwa Song, Hanns Hatt and Sung-Joon Lee
Pharmaceuticals 2023, 16(9), 1221; https://doi.org/10.3390/ph16091221 - 29 Aug 2023
Cited by 1 | Viewed by 1673
Abstract
Olfactory receptors are expressed in multiple extra-nasal tissues and these ectopic olfactory receptors mediate tissue-specific functions and regulate cellular physiology. Ectopic olfactory receptors may play key roles in tissues constantly exposed to odorants, thus the functionality of these receptors in genital tissues is [...] Read more.
Olfactory receptors are expressed in multiple extra-nasal tissues and these ectopic olfactory receptors mediate tissue-specific functions and regulate cellular physiology. Ectopic olfactory receptors may play key roles in tissues constantly exposed to odorants, thus the functionality of these receptors in genital tissues is of particular interest. The functionality of ectopic olfactory receptors expressed in VK2/E6E7 human vaginal epithelial cells was investigated. OR2H2 was the most highly expressed olfactory receptor expressed in VK2/E6E7 cells, and activation of OR2H2 by aldehyde 13-13, a ligand of OR2H2, increased the intracellular calcium and cAMP concentrations. Immunoblotting demonstrated that activation of OR2H2 by aldehyde 13-13 stimulated the CAMKKβ–AMPK–mTORC1–autophagy signaling axis, and that these effects were negated by OR2H2 knockdown. AMPK is known to regulate senescence; consequently, we investigated further the effect of aldehyde 13-13 on senescence. In H2O2-induced senescent cells, activation of OR2H2 by aldehyde 13-13 restored proliferation, and reduced the expression of senescence markers, P16 and P19. Additionally, aldehyde 13-13 induced apoptosis of H2O2-induced senescent cells, compared with non-senescent normal cells. In vivo, aldehyde 13-13 increased the lifespan of Caenorhabditis elegans and budding yeast. These findings demonstrate that OR2H2 is a functional receptor in VK2/E6E7 cells, and that activation of OR2H2 activates the AMPK–autophagy axis, and suppresses cellular aging and senescence, which may increase cellular health. Full article
(This article belongs to the Special Issue Potential Therapeutic Methods in Reproductive Aging)
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