Kisspeptin: Research Applications

Aplicacoes de Pesquisa

Kisspeptin is one do(a) a maioria extensively studied reproductive neuropeptides, with >1,000 human subjects across Phase 1/2 ensaios clinicos:

1. IVF Oocyte Maturation Trigger — SC Kp-54 (3.2–12.8 nmol/kg) desencadeia oocyte maturacao with 95% mature oocytes, 45.1% live birth rate, and no clinically significant OHSS (vs alto(a) OHSS risk with hCG).[10][11]
2. Hypothalamic Amenorrhea — Restores LH pulsatility; twice-dosagem semanal sustains LH ~9 IU/L over 8 weeks sem complete dessensibilizacao. Intranasal delivery validated in HA women.[12][13][19]
3. PCOS — IV KP-10 infusion (4 µg/kg/h × 7h) aumenta LH from 5.2 to 7.8 IU/L and estradiol levels in women with polycystic ovary syndrome.[15]
4. Psychosexual Disorders (HSDD) — Enhances limbic brain processing (amygdala, hippocampus) for sexual/bonding stimuli; aumenta penile tumescence up to 55% in men; modula sexual desire regions in women.[16][17]
5. Metabolic / Fatty Liver Disease — TAK-448 reduz hepatico(a) triglycerides, serum FFA, and ALT in MASLD models via AMPK→SREBP-1c→CIDEA downregulacao.[18]
6. Cancer Metastasis Suppression — Originally identificado(a) como melanoma/breast cancer metastasis suppressor ("metastin"); inibe MMP-9 via NF-κB pathway supressao.[1]
7. Prostate Cancer (Androgen Deprivation) — Continuous TAK-448/MVT-602 exposure → receptor dessensibilizacao → testosterone supressao to castrate levels (Phase 1 data).[14]
8. Pregnancy Biomarker — Kisspeptin rises 7,000-fold during healthy pregnancy; baixo(a) levels predict miscarriage/preeclampsia by assessing trophoblast invasion.[20]
9. Bone Health — Promotes osteoblasto diferenciacao, inibe osteoclasto activity; agudo(a) Kp-54 aumenta osteocalcin ~24% in men.[21]
10. Puberty Disorders — Activating/inactivating KISS1/KISS1R mutations linked to precocious/retardou puberty; kisspeptin challenge tests used diagnostically.[4]
11. Intranasal Delivery — First human trial: 12.8 nmol/kg intranasal Kp-54 → rapido(a) LH increase (4.4 IU/L in men); no AEs — validating non-invasive delivery.[19]
12. Metabolic Insulin Signaling — IV Kp-54 aumenta glucose-estimulou secrecao de insulina ~35% in healthy men.[22]