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Kisspeptin capsules are a special preparation made with Kisspeptin-10 as the core ingredient. It is a peptide with important physiological functions in the human body, encoded by the KISS1 gene and composed of 10 amino acids. It plays a key role in regulating the hypothalamic pituitary gonadal axis (HPG axis) by specifically binding to the G protein coupled receptor GPR54. At present, most of them are in the research stage and have not yet been widely used in clinical practice. Its half-life is short, it is easily metabolized rapidly in the body, and it is widely distributed, which may have adverse effects on non target tissues. Therefore, how to achieve precise delivery, control dosage, and prolong its duration of action is a key challenge that needs to be overcome in future research and development processes.
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Kisspeptin-10 (human) COA
Applications in the field of cardiovascular diseases
Kisspeptin capsules is an effective vasoconstrictor and angiogenesis inhibitor. In cardiovascular system research, its mechanism of action mainly revolves around the regulation of vascular endothelial cells and vascular smooth muscle cells. By binding to the GPR54 receptor, downstream signaling pathways can be activated, affecting the systolic and diastolic states of blood vessels. In vitro experiments have shown a significant increase in the adhesion of THP-1 cells to HUVEC (human umbilical vein endothelial cells), which is dependent on the activation of GPR54 receptors. When cells were pretreated with GPR54 antagonist P234, the cell adhesion induced by Kisspeptin-10 was significantly inhibited, indicating that GPR54 is a key target for Kisspeptin-10 to exert vasoconstriction and angiogenesis inhibition.
Further research has found that it can enhance the expression of various inflammatory factors and cell adhesion molecules in HUVECs, including TNF - α, IL-6, MCP-1, ICAM-1, VCAM-1, and E-selective protein. These molecules play an important role in the occurrence and development of vascular inflammation and atherosclerosis. The increase in protein expression of ICAM-1 and VCAM-1 is parallel to the increase in mRNA levels, suggesting that Kisspeptin-10 may regulate the expression of these molecules at the transcriptional level, thereby affecting the function of endothelial cells and vascular permeability.
In the study of animal models of atherosclerosis, it also shows an important regulatory role. ApoE -/- mice (a commonly used atherosclerosis model mice) were used as research objects to observe the effects of Kisspentin-10 or P234, a GPR54 antagonist, on the development of atherosclerosis. The results showed that injection of Kisspeptin-10 could slow down microvascular skin blood flow in ApoE -/- mice aged 13 to 17 weeks, which may be related to vasoconstriction. At the same time, during the development of atherosclerotic lesions, the size of the lesions, infiltration of monocytes/macrophages, and the content of vascular smooth muscle cells (VSMC) have a certain impact.
When combined with GPR54 antagonist P234, P234 can inhibit the formation of atherosclerosis induced by Kisspeptin-10, which further confirms the key role of GPR54 receptor in the regulation of atherosclerosis by Kisspeptin-10. In addition, metabolomics studies based on GC/TOF-MS in rats revealed changes in cardiac metabolites in rats treated with Kisspeptin-10. Transmission electron microscopy (TEM) observations showed changes in mitochondrial structure, which may help understand the mechanism by which Kisspeptin-10 treatment alters cardiac function and provide new clues for the pathogenesis research and treatment strategy development of cardiovascular diseases.
The potential therapeutic applications in the cardiovascular field mainly focus on the treatment and prevention of vascular related diseases. Because of its vasoconstriction and angiogenesis inhibition properties, Kisspentin-10 may become a new target for the treatment of atherosclerosis, hemangioma and other diseases. However, current research still faces some challenges. On the one hand, the mechanism of action has not been fully elucidated, especially in the complex physiological environment of the body.
Its interaction with other signaling pathways and its impact on different cell types need further in-depth research. On the other hand, how to achieve targeted delivery and reduce its side effects in non target tissues is the key issue in translating it into clinical treatment. In addition, the safety and effectiveness of long-term use also need to be verified through extensive animal experiments and clinical trials.
Applications in the field of neuroscience
The blood-brain barrier (BBB) is an important structure that maintains the homeostasis of the central nervous system, and its integrity is crucial for protecting neurons from harmful substances. The disruption of the blood-brain barrier is a common pathological feature in various neurological diseases, which can lead to adverse reactions such as neuroinflammation and oxidative stress, further exacerbating nerve damage. It has shown a significant role in protecting the integrity of the blood-brain barrier.
Regarding HIV related neurocognitive disorders (HAND), research has found that HIV-1 Tat protein can disrupt the integrity of the blood-brain barrier, leading to neuroinflammation and oxidative stress.
The research team from the First Affiliated Hospital of Xi'an Jiaotong University confirmed through in vitro and in vivo experiments that kisspeptin capsules can upregulate the expression of tight junction protein Claudin-5 by inhibiting the RhoA/ROCK pathway, significantly reducing HIV-1 Tat induced oxidative stress (decreased MDA levels, increased CAT activity) and the release of inflammatory factors (IL-6, TNF - α), thereby protecting the function of the blood-brain barrier. In single-cell analysis, focusing on known important gene transcripts has improved sample throughput sequencing depth and reduced costs, further revealing the molecular mechanism of Kisspeptin-10 in protecting the blood-brain barrier.
In addition, research on acute ischemic stroke (AIS) has also shown a protective effect on the blood-brain barrier.
A study was conducted using C57BL/6 mice to establish a model of middle cerebral artery occlusion (MCAO), followed by treatment with Kisspeptin-10. The results showed that it can significantly improve the neurological deficit in mice, reduce the volume of cerebral infarction and blood-brain barrier permeability, and upregulate the expression of Claudin-10. In vitro experiments were conducted using human brain microvascular endothelial cells (HBMVECs) to simulate ischemic conditions, and it was found that Kisspeptin-10 inhibits endothelial cell oxidative stress and barrier disruption by activating the Nrf2 signaling pathway. The Nrf2 silencing experiment confirmed the critical role of this pathway. This indicates that the Nrf2/Claudin-10 pathway can alleviate blood-brain barrier damage and neuroinflammation in ischemic stroke, providing a theoretical basis for the development of targeted therapies.
Neuroinflammatory regulation
Neuroinflammation is a common pathological feature of various neurological diseases, including Alzheimer's disease, Parkinson's disease, multiple sclerosis, etc. It has a potential role in regulating neuroinflammation. In the HAND study, inhibition of the RhoA/ROCK pathway was used to reduce the release of inflammatory factors such as IL-6 and TNF - α, thereby alleviating neuroinflammatory responses. These inflammatory factors play a crucial role in the process of neuroinflammation, activating microglia and astrocytes, further releasing more inflammatory mediators, forming a vicious cycle, and exacerbating nerve damage. The anti-inflammatory effect may be achieved by blocking this inflammatory signaling pathway, breaking the vicious cycle, and protecting neurons from inflammatory damage.
In the study of ischemic stroke, it has also shown an inhibitory effect on neuroinflammation. By activating the Nrf2 signaling pathway, it is possible to reduce mitochondrial reactive oxygen species (ROS) levels, increase superoxide dismutase (SOD) activity, reduce oxidative stress damage to nerve cells, and inhibit the release of inflammatory factors, thereby alleviating neuroinflammatory responses. This suggests that Kisspeptin-10 may exert neuroprotective effects by regulating the interaction between oxidative stress and inflammatory response.
Cognitive function impact
Although there is currently relatively little research on the direct effects of Kisspeptin-10 on cognitive function, based on the presence of Kisspeptin receptors in brain regions outside the hypothalamus (such as the hippocampus and amygdala), it is speculated that there may be a potential link between Kisspeptin-10 and cognitive function. The hippocampus plays an important role in the formation of new memories and spatial navigation, while the amygdala is closely related to emotion regulation and memory consolidation. The impact on these brain regions may involve pathways that regulate stress and behavioral regulation, thereby affecting neural plasticity and emotional processing, indirectly affecting the learning process.
In theory, it may also play a role in alleviating cognitive decline associated with cellular aging or neurodegenerative diseases. As age increases, neurons gradually age, neural plasticity decreases, and cognitive function also declines. By regulating processes such as neuroinflammation and oxidative stress, it is possible to improve the living environment of neurons, promote neural plasticity, and thus delay the process of cognitive decline. However, further research is needed to confirm these hypotheses by exploring the specific effects and mechanisms of kisspeptin capsules on cognitive function through animal experiments and clinical trials.
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