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KP-10, Metastin (45-54), Kisspeptin-10 (human), KiSS-1
Kisspeptin-10 is a decapeptide that activates the KISS1R receptor to stimulate GnRH release, regulating the reproductive hormone axis and fertility.
Seminara. Stephanie B SB
The study explains that kisspeptin-10 (also called metastin) binds to a receptor called GPR54, which then triggers the release of GnRH, a hormone that starts the cascade leading to puberty and reproductive function. Mutations that break this pathway can delay puberty, showing how important kisspeptin is for timing sexual development.
Dhillo. Waljit S WS; Chaudhri. Owais B OB; Patterson. Michael M; Thompson. Emily L EL; Murphy. Kevin...
In a tiny study of six men, giving kisspeptin‑54 through an IV for 90 minutes caused a clear rise in the hormones that tell the testes to make testosterone, boosting LH, FSH and testosterone levels compared to a saline placebo.
Kinoshita. Mika M; Tsukamura. Hiroko H; Adachi. Sachika S; Matsui. Hisanori H; Uenoyama. Yoshihisa Y...
The study shows that a brain peptide called metastin (kisspeptin-10) triggers the hormone surge that leads to ovulation in female rats by acting in a specific brain area, and blocking it stops the surge and disrupts the reproductive cycle.
Stark. Andreas M AM; Tongers. Kerrin K; Maass. Nicolai N; Mehdorn. H Maximilian HM; Held-Feindt. Jan...
Researchers found that breast cancer cells that spread to the brain have much lower levels of the gene KISS1 (and several other metastasis‑suppressor genes) compared to the original tumor. This drop is about ten‑fold and could be part of why these cancers become more aggressive in the brain.
Kotani. M M; Detheux. M M; Vandenbogaerde. A A; Communi. D D; Vanderwinden. J M JM; Le Poul. E E; Br...
Scientists found that kisspeptin peptides from the placenta tightly bind a receptor called GPR54, turning on several cell signals and even slowing cell growth. The receptor is found in hormone‑producing organs, and giving kisspeptin to rats boosted oxytocin release, hinting it could affect endocrine function. However, the study is basic lab work with no human dosing or clear health protocols.
Ilahi. Ikram I; Haq. Taqweem Ul TU
Kisspeptin is a small protein that talks to a receptor called GPR54 and helps control the whole reproductive system, from brain signals that start puberty to hormone release and even sperm activity. Changes in the kisspeptin gene or its receptor can cause delayed puberty or early puberty, and higher kisspeptin levels in blood can signal early puberty. The study mainly explains how this system works and why it matters for reproductive health.
Latif. R R; Rafique. N N
The study measured kisspeptin levels in young women at three points in their menstrual cycle and found that kisspeptin naturally rises from the early follicular phase to the pre‑ovulatory phase and again to the luteal phase, but these changes don’t line up with estradiol levels.
Patterson. M M; Murphy. K G KG; Thompson. E L EL; Patel. S S; Ghatei. M A MA; Bloom. S R SR
In male rats, directly injecting the hormone‑like peptide kisspeptin‑54 into specific parts of the brain caused a clear rise in the blood levels of luteinising hormone (LH) and testosterone within an hour, showing that this peptide can strongly activate the reproductive hormone system when it reaches the right brain regions.
Plant. Tony M TM
In higher primates, the gene KiSS-1 makes a protein called kisspeptin that helps turn on the brain's puberty signal (GnRH). When kisspein levels rise in a specific brain area, GnRH starts pulsing again, kicking off puberty. Experiments in young monkeys showed that giving a short kisspeptin fragment can jump‑start this GnRH release, and people who lack a working kisspeptin receptor never go through puberty.
Castellano. Juan M JM; Navarro. Victor M VM; Fernández-Fernández. Rafael R; Roa. Juan J; V...
In male rats with type 1‑like diabetes, the brain's kisspeptin system is turned down, which leads to low reproductive hormones. Giving kisspeptin restores sudden bursts of luteinizing hormone (LH) and testosterone, and even helps the prostate and testes stay bigger. Leptin (but not insulin) can also bring the kisspeptin system back to normal.
Mahmoudi. Fariba F; Khazali. Homayoun H; Janahmadi. Mahyar M
In male rats, giving kisspeptin directly into the brain raises testosterone, but giving morphine (an opioid) lowers testosterone and blocks the kisspeptin boost. Blocking opioids with naloxone also raises testosterone and works together with kisspeptin. This shows opioids can interfere with hormone‑stimulating pathways like kisspeptin’s.
Papaoiconomou. E E; Msaouel. P P; Makri. A A; Diamanti-Kandarakis. E E; Koutsilieris. M M
Kisspeptin is a naturally occurring protein that signals through the GPR54 receptor to control the release of reproductive hormones, helping start puberty and regulate the feedback loop with sex steroids.
Vignozzi. L L; Morelli. A A; Filippi. S S; Maggi. M M; Forti. G G
The study explains that puberty starts when the brain releases GnRH in pulses, and that proteins like kisspeptin and neurokinin B help trigger this release. In boys, the rise in testosterone during puberty is important for building strong bones and a typical male body shape. Genetic problems that affect these pathways can stop puberty and lead to weak bones.
Nash. Kevin T KT; Phadke. Pushkar A PA; Navenot. Jean-Marc JM; Hurst. Douglas R DR; Accavitti-Loper....
Scientists found that when the protein KISS1 is secreted by cancer cells, it can stop those cells from spreading to other organs and keep them in a dormant, harmless state in mice. This effect does not rely on the known kisspeptin receptor (GPR54), hinting at another way the protein works. While the idea of using KISS1 or similar molecules to control hidden cancer cells is exciting, the research is still early‑stage and only in animal models.
Sills. Eric Scott ES; Walsh. Anthony P H AP
Kisspeptin is a natural brain chemical that triggers the release of hormones that start puberty and control ovulation. The study shows that breaking the kisspeptin‑GPR54 connection stops normal hormone release, while activating it could help induce ovulation or serve as a new contraceptive target.
Jayasena. Channa N CN; Dhillo. Waljit S WS
This review says that the peptide kisspeptin-10 plays a key role in telling the brain to release hormones that control reproduction, and scientists think it could become a new drug for infertility, especially as people try to have kids later in life. However, the paper is a broad overview and doesn’t give any specific dosing or how to use it yourself yet.
Villanueva. Carine C; de Roux. Nicolas N
The abstract explains that puberty starts when the brain’s kisspeptin system (kiss/GPR54) flips a switch that re‑activates GnRH hormone pulses, ending a childhood period of suppressed GnRH. It highlights that genetic studies have found new genes that help GnRH neurons move and work, underscoring kisspeptin’s central role in turning on the reproductive hormone axis.
Kottler. Marie-Laure ML; Hamel. Adèle A; Malville. Elodie E; Richard. Nicolas N
This study looks at why some people have trouble with puberty and fertility because their brain doesn’t release enough GnRH hormone. It shows that many different genes can cause this, including the KISS-1 gene that makes kisspeptin, but we still don’t know exactly how kisspeptin works in humans. The findings are mostly about genetics, not about how to use kisspeptin as a supplement or treatment.
Messager. Sophie S; Chatzidaki. Emmanouella E EE; Ma. Dan D; Hendrick. Alan G AG; Zahn. Dirk D; Dixo...
The study shows that the peptide kisspeptin directly triggers the release of the hormone GnRH, which then causes a surge in reproductive hormones (LH and FSH). This effect requires the receptor GPR54 and works in both mice and sheep, proving that kisspeptin is a key switch for the reproductive hormone system.
Mead. E J EJ; Maguire. J J JJ; Kuc. R E RE; Davenport. A P AP
Kisspeptin is a small protein that helps start puberty by turning on the hormone cascade that controls reproduction. It also appears to slow down cancer spread, is involved in pregnancy, and can tighten blood vessels, especially in areas prone to artery disease. However, the paper is a broad review and does not give any dosing or practical protocols for using kisspeptin.