Ji. Ke K; Ye. Lin L; Ruge. Fiona F; Hargest. Rachel R; Mason. Malcolm D MD; Jiang. Wen G WG
Researchers found that the protein kisspeptin‑10 can slow down the movement of colon cancer cells in lab dishes, likely by blocking a pathway called ERK and lowering a molecule (MMP‑9) that helps tumors spread. In real patient samples, lower levels of the related gene Kiss‑1 were linked to more advanced cancer, suggesting it normally helps keep cancer from spreading.
George. J T JT; Hendrikse. M M; Veldhuis. J D JD; Clarke. I J IJ; Anderson. R A RA; Millar. R P RP
In a tiny first‑in‑human trial, giving an IV infusion of the hormone‑blocking peptide GnIH lowered the natural LH hormone in post‑menopausal women, but it didn’t change the LH boost caused by a kisspeptin‑10 injection in men. The peptide was well tolerated with no side effects reported.
Chen. Yan Y; Liu. Lan L; Li. Zhengguang Z; Wang. Dawei D; Li. Ning N; Song. Ying Y; Guo. Cong C; Liu...
Researchers cloned the kiss1 gene from Brandt's voles and found it makes a protein that includes the kisspeptin-10 segment. The gene is active mainly in reproductive organs and spikes around the time the animals reach puberty, staying high in adults. This shows kisspeptin-10 is a conserved player in mammalian reproductive timing, but the study doesn't give any direct tips for human use.
The paper explains that a brain peptide called kisspeptin, found in specific hypothalamic neurons, likely controls the regular bursts of another hormone, GnRH, which is essential for fertility and hormone production in both men and women. This insight is mainly basic science and doesn’t give direct instructions for using kisspeptin in self‑experiments.
Kelestimur. Haluk H; Kacar. Emine E; Uzun. Aysegul A; Ozcan. Mete M; Kutlu. Selim S
In a lab study using mouse hypothalamic cells, the peptide kisspeptin‑10 boosted the release of the hormone GnRH and raised calcium inside the cells. When the cells were also given either gonadotropin‑inhibitory hormone or a related Arg‑Phe‑amide peptide, the extra GnRH caused by kisspeptin was cut down, but the calcium rise stayed the same. This means those other peptides can dampen kisspeptin’s effect on hormone release without touching calcium signals.
Ibáñez de Opakua. Alain A; Merino. Nekane N; Villate. Maider M; Cordeiro. Tiago N TN; Orma...
Scientists looked at the shape of the KISS1 protein (the parent of kisspeptin-10) and found it doesn’t fold into a stable structure – it’s basically a floppy chain that behaves like a random coil and is easily cut up by enzymes.
The study shows that kisspeptin-10, like other RF‑amide peptides, can make mice more sensitive to pain and block the pain‑relief effects of morphine by acting on NPFF1/2 receptors. This effect is stopped by a drug that blocks those receptors, meaning the pain‑modulating action is real and not just a lab artifact.
The study explains how two brain chemicals, kisspeptin and neurokinin B, work together to control the release of hormones that start puberty and keep the reproductive system running. It shows that problems with these chemicals can cause delayed puberty or infertility, and that neurokinin B helps trigger hormone bursts by acting on kisspeptin‑producing neurons.
Camerino. M A MA; Liu. M M; Moriya. S S; Kitahashi. T T; Mahgoub. A A; Mountford. S J SJ; Chalmers....
Researchers made new versions of the kisspeptin peptide that are more resistant to breakdown and still strongly activate its receptor in lab cells. Some of these modified peptides, including ones with a beta‑amino acid tweak or a fluorescent tag, worked especially well. They also showed that normal kisspeptin can get degraded by enzymes in the test, which can lower its apparent activity.
Merhi. Zaher Z; Thornton. Kimberley K; Bonney. Elizabeth E; Cipolla. Marilyn J MJ; Charron. Maureen...
The study found that the amount of kisspeptin (kiss1) and its receptor (kiss1r) in mouse ovaries goes up as the animals get older, but eating a high‑fat diet doesn’t change those levels. Mice that lack the inflammation‑related protein MCP‑1 have lower ovarian kisspeptin and higher levels of AMH, a hormone linked to egg health. In human egg‑supporting cells, the kisspeptin receptor level rises with age, while the kisspeptin peptide itself isn’t detected.
The paper reviews animal studies showing that the brain chemical kisspeptin helps tell the reproductive system about the body's energy state, acting as a bridge between metabolism and fertility, but it doesn’t seem to change appetite itself.
Cheng. Shujie S; Castillo. Victor V; Eliaz. Isaac I; Sliva. Daniel D
A study found that honokiol, a compound from magnolia bark, can block the spread of kidney cancer cells in the lab by turning on the KISS1/KISS1R pathway, which normally suppresses metastasis. When the researchers blocked KISS1, the anti‑cancer effect of honokiol went away, showing the pathway is key.
Scientists found that rare genetic changes in the kisspeptin receptor (KISS1R) can cause a condition where the brain doesn’t signal the gonads properly, leading to low sex hormones. One new mutation (p.Tyr313His) stops the receptor from working, and another family had two known mutations. Giving patients pulsatile GnRH (the hormone that normally triggers kisspeptin) restored hormone production and even allowed a man to father a child, showing the problem is at the hypothalamus level.
Jayasena. Channa N CN; Comninos. Alexander N AN; Narayanaswamy. Shakunthala S; Bhalla. Sanjana S; Ab...
In a small study of five healthy women, giving kisspeptin‑54 twice daily for a week didn’t change growth hormone, prolactin, or thyroid‑stimulating hormone levels either right after a dose or over the whole week, even though the same dose does boost fertility hormones. This suggests kisspeptin‑54 is unlikely to mess with those other pituitary hormones at the studied dose.
Zhou. Shuzhi S; Holmes. Melissa M MM; Forger. Nancy G NG; Goldman. Bruce D BD; Lovern. Matthew B MB;...
This study looked at how a brain peptide called kisspeptin is linked to the ability of naked mole‑rats to become breeders. It found that breeding animals have higher sex hormones and that kisspeptin‑producing cells are abundant in the brain, especially in female breeders, hinting that kisspeptin helps lift reproductive suppression. The work is basic science in a rare animal, so it doesn’t give direct tips for humans, but it adds to our understanding of how kisspeptin might control hormone release.
Semaan. Sheila J SJ; Tolson. Kristen P KP; Kauffman. Alexander S AS
Kisspeptin is a brain peptide that kicks off puberty and controls fertility. It forms in two key hypothalamus spots and its neurons are shaped by sex hormones like testosterone and estradiol, showing different patterns in males and females. Most of what we know comes from rodent studies, and the research is still figuring out how these cells develop and are regulated.
Akkaya. Hatice H; Kilic. Ertugrul E; Dinc. Signem Eyuboglu SE; Yilmaz. Bayram B
In rats, a single dose of kisspeptin-10 given after a brain injury caused by excess methionine helped protect brain cells. It lowered markers of oxidative damage, boosted the brain's natural antioxidant glutathione, and restored the activity of an important antioxidant enzyme (SOD). The peptide itself didn’t cause any extra cell death.
Seltzer. Justin J; Ashton. Charles E CE; Scotton. Thomas C TC; Pangal. Dhiraj D; Carmichael. John D...
The review looked at many genes and proteins that are different in ACTH‑producing pituitary tumors compared to normal tissue. It found that the gene KISS1, which makes the peptide kisspeptin, is consistently lower in these tumors, while several other genes are higher. The authors suggest these differences could become future drug targets, but they didn’t test kisspeptin as a treatment.
Kisspeptin is a hormone that controls the reproductive system, and scientists are creating molecules that block it. These blockers could someday help treat conditions like early puberty, endometriosis, or prostate cancer, but they are still in early research stages and not ready for personal use.
Harihar. Sitaram S; Pounds. Keke M KM; Iwakuma. Tomoo T; Seidah. Nabil G NG; Welch. Danny R DR
The study shows that the protein furin is the key enzyme that cuts the larger KISS1 protein into the active kisspeptin peptides. Blocking furin stops kisspeptin production, while other similar enzymes aren’t needed for this step.