pomc peptides Proopiomelanocortin (POMC - poly-peptide-serum POMC encodes a polypeptide hormone precursor Unraveling the Complex World of POMC Peptides: A Deep Dive into Their Synthesis and Functions

estee-lauder-resilience-multi-effect-tri-peptide-face-and-neck-creme POMC peptides represent a fascinating and crucial area of biological research, stemming from the precursor protein proopiomelanocortin (POMC)作者：E Harno·2018·被引用次数：274—Pro-opiomelanocortin (POMC) is the archetypal polypeptide precursor of hormones and neuropeptides. In this review, we examine the variability in the individual .... This intricate molecule, a polypeptide precursor, is the origin of a diverse array of biologically active peptides with profound implications for various physiological processes. Understanding the synthesis, processing, and ultimate actions of POMC and its derived fragments is essential for comprehending everything from energy balance and stress response to skin pigmentation and immune function.作者：E Harno·2018·被引用次数：274—Pro-opiomelanocortin (POMC) is the archetypal polypeptide precursor of hormones and neuropeptides. In this review, we examine the variability in the individual ...

Proopiomelanocortin (POMC) itself is a substantial precursor polypeptide, typically comprising 241 amino acid residues in humansProopiomelanocortin, Its Derived Peptides, and the Skin. Its synthesis is primarily orchestrated in the corticotrophs of the anterior pituitary gland, but it's also notably produced in other tissues, including the skin.POMC‐Derived Peptides and Their Biological Action - 1999 This widespread production highlights the diverse roles of POMC peptides. The POMC gene encodes this precursor protein, which then undergoes extensive, tissue-specific, post-translational processing.POMC-derived peptides and their biological action This processing is a sophisticated cascade involving cleavage by subtilisin-like enzymes, such as prohormone convertase 1 (PC1) and prohormone convertase 2 (PC2), at specific sites to liberate a variety of smaller, functional peptide hormones.

The repertoire of POMC-derived peptides is extensive and includes key players in endocrine and neurological signaling. Among the most well-established are adrenocorticotropic hormone (ACTH), which plays a central role in the stress response and binds to the melanocortin 2 receptor (MC2R), and various lipotropins, such as beta-lipotropin. Additionally, POMC is a source of melanocyte-stimulating hormones (MSHs), including alpha-MSH, which are critical for regulating skin pigmentation by stimulating melanin production in melanocytes. Interestingly, certain POMC peptides, like those produced by keratinocytes in the skin, can be more potent than acetylated alpha-MSH in promoting melanogenesis in human melanocytes.

Beyond their roles in stress and pigmentation, POMC peptides exert diverse effects on glucose and electrolyte homeostasis (via ACTH) and significantly influence body mass and appetite. Neurons expressing POMC, particularly in the arcuate nucleus of the hypothalamus, are integral to the central melanocortin system, which regulates energy balance. These POMC neurons are activated by satiety signals and, in turn, can suppress feeding behavior. Conversely, disruptions in POMC processing or signaling are implicated in conditions like obesity作者：E Harno·2018·被引用次数：274—Pro-opiomelanocortin (POMC) is the archetypal polypeptide precursor of hormones and neuropeptides. In this review, we examine the variability in the individual .... Research into driving the urge to eat has highlighted the critical role of these POMC neurons in appetite regulation, with some studies investigating UCP2-dependent redox sensing in POMC neurons as a mechanism that regulates feedingSkin POMC peptides: their actions at the human MC-1 ....

The processing of POMC is not a uniform event; it is largely tissue-specific, leading to different sets of peptides being generated in various locations. This tissue-specific processing of Pro-Opiomelanocortin allows for tailored physiological responses. For instance, POMC peptides and gene expression in skin have garnered significant attention, with studies showing that ultraviolet B radiation can stimulate POMC gene expression in the skin. Furthermore, POMC peptides can influence immune function, with expression of POMC even identified in lymphocytes, lending support to ACTH-like effects.

The complexity of POMC processing and POMC derived peptides means that understanding these interactions is vital. The study of these molecules extends to their presence in bodily fluids, with research investigating Proopiomelanocortin-Derived Peptides in Rat Cerebrospinal Fluid, suggesting their involvement in central nervous system regulation. The exploration of POMC also extends to the development of research tools. For example, a POMC Peptide can be used for blocking the activity of a POMC antibody, aiding in experimental investigations.

In summary, POMC peptides are a crucial family of signaling molecules derived from the proopiomelanocortin precursor. Their journey from a single polypeptide to a multitude of functional hormones and neuropeptides, through intricate POMC processing, underpins a wide range of physiological functionsPrecursor protein of pituitary hormonesthat are involved in diverse physiological processes, including the regulation of energy balance, stress response, .... From the regulation of energy balance and stress to the nuanced control of skin pigmentation and immune responses, the POMC system remains a captivating area of scientific inquiry, with ongoing research continually revealing new insights into its profound impact on health and well-being作者：LE Pritchard·2003·被引用次数：79—Regulation ofproopiomelanocortin (POMC) is an important means of controlling the central melanocortin system. It has never been established whether the sp.. The study of POMC neurons and their role in appetite, alongside other POMC-derived peptides, continues to be a significant focus in understanding metabolic disorders and neurological functionsPOMC gene: MedlinePlus Genetics.