Neoma T Boardman, Giulia Trani, Marco Scalabrin, Vanina Romanello, Rob C I Wüst
{"title":"Intracellular to Interorgan Mitochondrial Communication in Striated Muscle in Health and Disease.","authors":"Neoma T Boardman, Giulia Trani, Marco Scalabrin, Vanina Romanello, Rob C I Wüst","doi":"10.1210/endrev/bnad004","DOIUrl":"https://doi.org/10.1210/endrev/bnad004","url":null,"abstract":"<p><p>Mitochondria sense both biochemical and energetic input in addition to communicating signals regarding the energetic state of the cell. Increasingly, these signaling organelles are recognized as key for regulating different cell functions. This review summarizes recent advances in mitochondrial communication in striated muscle, with specific focus on the processes by which mitochondria communicate with each other, other organelles, and across distant organ systems. Intermitochondrial communication in striated muscle is mediated via conduction of the mitochondrial membrane potential to adjacent mitochondria, physical interactions, mitochondrial fusion or fission, and via nanotunnels, allowing for the exchange of proteins, mitochondrial DNA, nucleotides, and peptides. Within striated muscle cells, mitochondria-organelle communication can modulate overall cell function. The various mechanisms by which mitochondria communicate mitochondrial fitness to the rest of the body suggest that extracellular mitochondrial signaling is key during health and disease. Whereas mitochondria-derived vesicles might excrete mitochondria-derived endocrine compounds, stimulation of mitochondrial stress can lead to the release of fibroblast growth factor 21 (FGF21) and growth differentiation factor 15 (GDF15) into the circulation to modulate whole-body physiology. Circulating mitochondrial DNA are well-known alarmins that trigger the immune system and may help to explain low-grade inflammation in various chronic diseases. Impaired mitochondrial function and communication are central in common heart and skeletal muscle pathologies, including cardiomyopathies, insulin resistance, and sarcopenia. Lastly, important new advances in research in mitochondrial endocrinology, communication, medical horizons, and translational aspects are discussed.</p>","PeriodicalId":11544,"journal":{"name":"Endocrine reviews","volume":"44 4","pages":"668-692"},"PeriodicalIF":20.3,"publicationDate":"2023-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10335175/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9789839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Rocio Garcia-Carbonero, Beatriz Anton-Pascual, Andrea Modrego, Maria Del Carmen Riesco-Martinez, Alberto Lens-Pardo, Carlos Carretero-Puche, Beatriz Rubio-Cuesta, Beatriz Soldevilla
{"title":"Advances in the Treatment of Gastroenteropancreatic Neuroendocrine Carcinomas: Are we Moving Forward?","authors":"Rocio Garcia-Carbonero, Beatriz Anton-Pascual, Andrea Modrego, Maria Del Carmen Riesco-Martinez, Alberto Lens-Pardo, Carlos Carretero-Puche, Beatriz Rubio-Cuesta, Beatriz Soldevilla","doi":"10.1210/endrev/bnad006","DOIUrl":"https://doi.org/10.1210/endrev/bnad006","url":null,"abstract":"<p><p>Poorly differentiated gastroenteropancreatic neuroendocrine carcinomas are aggressive neoplasms of challenging clinical management. A small proportion of patients with early-stage disease may achieve long-term survival, but the majority of patients present with rapidly lethal metastatic disease. Current standard of care still follows the treatment paradigm of small cell lung cancer, a far more common G3 neuroendocrine neoplasm, although emerging molecular and clinical data increasingly question this approach. In this article, we will briefly summarize epidemiology and prognosis of gastroenteropancreatic neuroendocrine carcinomas to emphasize the very low incidence, aggressive nature, and orphan status of this tumor entity. We will also discuss the current pathological classification and its limitations, as well as recent data on their differential biological background compared with small cell lung cancer, and its potential implications for patients care. Then, we will review the standard of care of systemic therapy, basically focused on platinum-based cytotoxic chemotherapy, including some recent randomized trials providing evidence regarding efficacy of irinotecan vs etoposide platinum doublets. Finally, we will present a comprehensive overview of novel therapeutic strategies in current clinical development, including recently reported data on immunotherapy, tumor-agnostic therapies (microsatellite instability, high tumor mutational burden, NTRK and RET gene fusions, BRAF or KRAS inhibitors), and additional treatment strategies targeting other tumor vulnerabilities (ie, Notch pathway, novel targets for radioligand therapy), and provide some insights regarding unmet needs and future perspectives to improve patient's care and prognosis.</p>","PeriodicalId":11544,"journal":{"name":"Endocrine reviews","volume":"44 4","pages":"724-736"},"PeriodicalIF":20.3,"publicationDate":"2023-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10335166/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10146947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Anvita Komarla, Suzanne Dufresne, Christina G Towers
{"title":"Recent Advances in the Role of Autophagy in Endocrine-Dependent Tumors.","authors":"Anvita Komarla, Suzanne Dufresne, Christina G Towers","doi":"10.1210/endrev/bnad001","DOIUrl":"10.1210/endrev/bnad001","url":null,"abstract":"<p><p>Autophagy plays a complex role in several cancer types, including endocrine-dependent cancers, by fueling cellular metabolism and clearing damaged substrates. This conserved recycling process has a dual function across tumor types where it can be tumor suppressive at early stages but tumor promotional in established disease. This review highlights the controversial roles of autophagy in endocrine-dependent tumors regarding cancer initiation, tumorigenesis, metastasis, and treatment response. We summarize clinical trial results thus far and highlight the need for additional mechanistic, preclinical, and clinical studies in endocrine-dependent tumors, particularly in breast cancer and prostate cancer.</p>","PeriodicalId":11544,"journal":{"name":"Endocrine reviews","volume":"44 4","pages":"629-646"},"PeriodicalIF":20.3,"publicationDate":"2023-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10335171/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9842110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jerôme Bertherat, Isabelle Bourdeau, Lucas Bouys, Fanny Chasseloup, Peter Kamenicky, André Lacroix
{"title":"Clinical, Pathophysiologic, Genetic, and Therapeutic Progress in Primary Bilateral Macronodular Adrenal Hyperplasia.","authors":"Jerôme Bertherat, Isabelle Bourdeau, Lucas Bouys, Fanny Chasseloup, Peter Kamenicky, André Lacroix","doi":"10.1210/endrev/bnac034","DOIUrl":"https://doi.org/10.1210/endrev/bnac034","url":null,"abstract":"<p><p>Patients with primary bilateral macronodular adrenal hyperplasia (PBMAH) usually present bilateral benign adrenocortical macronodules at imaging and variable levels of cortisol excess. PBMAH is a rare cause of primary overt Cushing's syndrome but may represent up to one-third of bilateral adrenal incidentalomas with evidence of cortisol excess. The increased steroidogenesis in PBMAH is often regulated by various G protein-coupled receptors (GPCRs) aberrantly expressed in PBMAH tissues; some receptor ligands are ectopically produced in PBMAH tissues, creating aberrant autocrine/paracrine regulation of steroidogenesis. The bilateral nature of PBMAH and familial aggregation led to the identification of germline heterozygous inactivating mutations of the ARMC5 gene, in 20% to 25% of the apparent sporadic cases and more frequently in familial cases; ARMC5 mutations/pathogenic variants can be associated with meningiomas. More recently, combined germline mutations/pathogenic variants and somatic events inactivating the KDM1A gene were specifically identified in patients affected by glucose-dependent insulinotropic peptide (GIP)-dependent PBMAH. Functional studies demonstrated that inactivation of KDM1A leads to GIP-receptor (GIPR) overexpression and over- or downregulation of other GPCRs. Genetic analysis is now available for early detection of family members of index cases with PBMAH carrying identified germline pathogenic variants. Detailed biochemical, imaging, and comorbidity assessment of the nature and severity of PBMAH is essential for its management. Treatment is reserved for patients with overt or mild cortisol/aldosterone or other steroid excesses, taking in account comorbidities. It previously relied on bilateral adrenalectomy; however, recent studies tend to favor unilateral adrenalectomy or, less frequently, medical treatment with cortisol synthesis inhibitors or specific blockers of aberrant GPCR.</p>","PeriodicalId":11544,"journal":{"name":"Endocrine reviews","volume":"44 4","pages":"567-628"},"PeriodicalIF":20.3,"publicationDate":"2023-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10162219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Coxsackievirus and Type 1 Diabetes: Diabetogenic Mechanisms and Implications for Prevention.","authors":"Alexia Carré, Federica Vecchio, Malin Flodstrom-Tullberg, Sylvaine You, Roberto Mallone","doi":"10.1210/endrev/bnad007","DOIUrl":"https://doi.org/10.1210/endrev/bnad007","url":null,"abstract":"<p><p>The evidence for an association between coxsackievirus B (CVB) infection, pancreatic islet autoimmunity, and clinical type 1 diabetes is increasing. Results from prospective cohorts and pancreas histopathology studies have provided a compelling case. However, the demonstration of a causal relationship is missing, and is likely to remain elusive until tested in humans by avoiding exposure to this candidate viral trigger. To this end, CVB vaccines have been developed and are entering clinical trials. However, the progress made in understanding the biology of the virus and in providing tools to address the long-standing question of causality contrasts with the scarcity of information about the antiviral immune responses triggered by infection. Beta-cell death may be primarily induced by CVB itself, possibly in the context of poor immune protection, or secondarily provoked by T-cell responses against CVB-infected beta cells. The possible involvement of epitope mimicry mechanisms skewing the physiological antiviral response toward autoimmunity has also been suggested. We here review the available evidence for each of these 3 non-mutually exclusive scenarios. Understanding which ones are at play is critical to maximize the odds of success of CVB vaccination, and to develop suitable tools to monitor the efficacy of immunization and its intermingling with autoimmune onset or prevention.</p>","PeriodicalId":11544,"journal":{"name":"Endocrine reviews","volume":"44 4","pages":"737-751"},"PeriodicalIF":20.3,"publicationDate":"2023-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9791250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"LGR4: A New Receptor Member in Endocrine and Metabolic Diseases.","authors":"Ningning Zhang, Mingyang Yuan, Jiqiu Wang","doi":"10.1210/endrev/bnad003","DOIUrl":"https://doi.org/10.1210/endrev/bnad003","url":null,"abstract":"<p><p>Classic hormone membrane receptors, such as leucine-rich repeat-containing G protein-coupled receptor (LGR) 1 (follicle-stimulating hormone receptor), LGR2 (luteinizing hormone receptor), and LGR3 (thyrotropin receptor), are crucial in endocrinology and metabolism, and the identification of new receptors can advance this field. LGR4 is a new member of this G protein-coupled receptor family and shows ways of expression and function similar to those of LGR1/2/3. Several recent studies have reported that, unlike LGR5/6, LGR4 plays essential roles in endocrine and metabolic diseases, including hypothalamic-gonadal axis defects, mammary gland dysplasia, osteoporosis, cardiometabolic diseases, and obesity. An inactivating mutation p.R126X in LGR4 leads to osteoporosis, electrolyte disturbance, abnormal sex hormone levels, and weight loss, whereas an activating mutation p.A750T is associated with bone mineral density, insulin resistance, and adiposity. Though several paracrine ligands are known to act on LGR4, the endocrine ligands of LGR4 remain poorly defined. In this review, we highlight LGR4 dysfunction in clinical diseases, animal models, and pathophysiological changes, discuss their known ligands and downstream signaling pathways, and identify unresolved questions and future perspectives of this new receptor.</p>","PeriodicalId":11544,"journal":{"name":"Endocrine reviews","volume":"44 4","pages":"647-667"},"PeriodicalIF":20.3,"publicationDate":"2023-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10335173/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10163628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Veronica Vella, Rosamaria Lappano, Eduardo Bonavita, Marcello Maggiolini, Robert Bryan Clarke, Antonino Belfiore, Ernestina Marianna De Francesco
{"title":"Insulin/IGF Axis and the Receptor for Advanced Glycation End Products: Role in Meta-inflammation and Potential in Cancer Therapy.","authors":"Veronica Vella, Rosamaria Lappano, Eduardo Bonavita, Marcello Maggiolini, Robert Bryan Clarke, Antonino Belfiore, Ernestina Marianna De Francesco","doi":"10.1210/endrev/bnad005","DOIUrl":"https://doi.org/10.1210/endrev/bnad005","url":null,"abstract":"<p><p>In metabolic conditions such as obesity and diabetes, which are associated with deregulated signaling of the insulin/insulin-like growth factor system (IIGFs), inflammation plays a dominant role. In cancer, IIGFs is implicated in disease progression, particularly during obesity and diabetes; however, further mediators may act in concert with IIGFs to trigger meta-inflammation. The receptor for advanced glycation end-products (RAGE) and its ligands bridge together metabolism and inflammation in obesity, diabetes, and cancer. Herein, we summarize the main mechanisms of meta-inflammation in malignancies associated with obesity and diabetes; we provide our readers with the most recent understanding and conceptual advances on the role of RAGE at the crossroad between impaired metabolism and inflammation, toward disease aggressiveness. We inform on the potential hubs of cross-communications driven by aberrant RAGE axis and dysfunctional IIGFs in the tumor microenvironment. Furthermore, we offer a rationalized view on the opportunity to terminate meta-inflammation via targeting RAGE pathway, and on the possibility to shut its molecular connections with IIGFs, toward a better control of diabetes- and obesity-associated cancers.</p>","PeriodicalId":11544,"journal":{"name":"Endocrine reviews","volume":"44 4","pages":"693-723"},"PeriodicalIF":20.3,"publicationDate":"2023-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10335176/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10164644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Anita C S Hokken-Koelega, Manouk van der Steen, Margaret C S Boguszewski, Stefano Cianfarani, Jovanna Dahlgren, Reiko Horikawa, Veronica Mericq, Robert Rapaport, Abdullah Alherbish, Debora Braslavsky, Evangelia Charmandari, Steven D Chernausek, Wayne S Cutfield, Andrew Dauber, Asma Deeb, Wesley J Goedegebuure, Paul L Hofman, Elvira Isganatis, Alexander A Jorge, Christina Kanaka-Gantenbein, Kenichi Kashimada, Vaman Khadilkar, Xiao-Ping Luo, Sarah Mathai, Yuya Nakano, Mabel Yau
{"title":"International Consensus Guideline on Small for Gestational Age: Etiology and Management From Infancy to Early Adulthood.","authors":"Anita C S Hokken-Koelega, Manouk van der Steen, Margaret C S Boguszewski, Stefano Cianfarani, Jovanna Dahlgren, Reiko Horikawa, Veronica Mericq, Robert Rapaport, Abdullah Alherbish, Debora Braslavsky, Evangelia Charmandari, Steven D Chernausek, Wayne S Cutfield, Andrew Dauber, Asma Deeb, Wesley J Goedegebuure, Paul L Hofman, Elvira Isganatis, Alexander A Jorge, Christina Kanaka-Gantenbein, Kenichi Kashimada, Vaman Khadilkar, Xiao-Ping Luo, Sarah Mathai, Yuya Nakano, Mabel Yau","doi":"10.1210/endrev/bnad002","DOIUrl":"https://doi.org/10.1210/endrev/bnad002","url":null,"abstract":"<p><p>This International Consensus Guideline was developed by experts in the field of small for gestational age (SGA) of 10 pediatric endocrine societies worldwide. A consensus meeting was held and 1300 articles formed the basis for discussions. All experts voted about the strengths of the recommendations. The guideline gives new and clinically relevant insights into the etiology of short stature after SGA birth, including novel knowledge about (epi)genetic causes. Further, it presents long-term consequences of SGA birth and also reviews new treatment options, including treatment with gonadotropin-releasing hormone agonist (GnRHa) in addition to growth hormone (GH) treatment, as well as the metabolic and cardiovascular health of young adults born SGA after cessation of childhood GH treatment in comparison with appropriate control groups. To diagnose SGA, accurate anthropometry and use of national growth charts are recommended. Follow-up in early life is warranted and neurodevelopment evaluation in those at risk. Excessive postnatal weight gain should be avoided, as this is associated with an unfavorable cardiometabolic health profile in adulthood. Children born SGA with persistent short stature < -2.5 SDS at age 2 years or < -2 SDS at 3 to 4 years of age, should be referred for diagnostic workup. In case of dysmorphic features, major malformations, microcephaly, developmental delay, intellectual disability, and/or signs of skeletal dysplasia, genetic testing should be considered. Treatment with 0.033 to 0.067 mg GH/kg/day is recommended in case of persistent short stature at age of 3 to 4 years. Adding GnRHa treatment could be considered when short adult height is expected at pubertal onset. All young adults born SGA require counseling to adopt a healthy lifestyle.</p>","PeriodicalId":11544,"journal":{"name":"Endocrine reviews","volume":"44 3","pages":"539-565"},"PeriodicalIF":20.3,"publicationDate":"2023-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10166266/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9896909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Hypomagnesemia and Cardiovascular Risk in Type 2 Diabetes.","authors":"Lynette J Oost, Cees J Tack, Jeroen H F de Baaij","doi":"10.1210/endrev/bnac028","DOIUrl":"https://doi.org/10.1210/endrev/bnac028","url":null,"abstract":"<p><p>Hypomagnesemia is 10-fold more common in individuals with type 2 diabetes (T2D) than in the healthy population. Factors that are involved in this high prevalence are low Mg2+ intake, gut microbiome composition, medication use, and presumably genetics. Hypomagnesemia is associated with insulin resistance, which subsequently increases the risk to develop T2D or deteriorates glycemic control in existing diabetes. Mg2+ supplementation decreases T2D-associated features like dyslipidemia and inflammation, which are important risk factors for cardiovascular disease (CVD). Epidemiological studies have shown an inverse association between serum Mg2+ and the risk of developing heart failure (HF), atrial fibrillation (AF), and microvascular disease in T2D. The potential protective effect of Mg2+ on HF and AF may be explained by reduced oxidative stress, fibrosis, and electrical remodeling in the heart. In microvascular disease, Mg2+ reduces the detrimental effects of hyperglycemia and improves endothelial dysfunction; however, clinical studies assessing the effect of long-term Mg2+ supplementation on CVD incidents are lacking, and gaps remain on how Mg2+ may reduce CVD risk in T2D. Despite the high prevalence of hypomagnesemia in people with T2D, routine screening of Mg2+ deficiency to provide Mg2+ supplementation when needed is not implemented in clinical care as sufficient clinical evidence is lacking. In conclusion, hypomagnesemia is common in people with T2D and is involved both as cause, probably through molecular mechanisms leading to insulin resistance, and as consequence and is prospectively associated with development of HF, AF, and microvascular complications. Whether long-term supplementation of Mg2+ is beneficial, however, remains to be determined.</p>","PeriodicalId":11544,"journal":{"name":"Endocrine reviews","volume":"44 3","pages":"357-378"},"PeriodicalIF":20.3,"publicationDate":"2023-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10166267/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9913361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jean-Pierre Vilardaga, Lisa J Clark, Alex D White, Ieva Sutkeviciute, Ji Young Lee, Ivet Bahar
{"title":"Molecular Mechanisms of PTH/PTHrP Class B GPCR Signaling and Pharmacological Implications.","authors":"Jean-Pierre Vilardaga, Lisa J Clark, Alex D White, Ieva Sutkeviciute, Ji Young Lee, Ivet Bahar","doi":"10.1210/endrev/bnac032","DOIUrl":"10.1210/endrev/bnac032","url":null,"abstract":"<p><p>The classical paradigm of G protein-coupled receptor (GPCR) signaling via G proteins is grounded in a view that downstream responses are relatively transient and confined to the cell surface, but this notion has been revised in recent years following the identification of several receptors that engage in sustained signaling responses from subcellular compartments following internalization of the ligand-receptor complex. This phenomenon was initially discovered for the parathyroid hormone (PTH) type 1 receptor (PTH1R), a vital GPCR for maintaining normal calcium and phosphate levels in the body with the paradoxical ability to build or break down bone in response to PTH binding. The diverse biological processes regulated by this receptor are thought to depend on its capacity to mediate diverse modes of cyclic adenosine monophosphate (cAMP) signaling. These include transient signaling at the plasma membrane and sustained signaling from internalized PTH1R within early endosomes mediated by PTH. Here we discuss recent structural, cell signaling, and in vivo studies that unveil potential pharmacological outputs of the spatial versus temporal dimension of PTH1R signaling via cAMP. Notably, the combination of molecular dynamics simulations and elastic network model-based methods revealed how precise modulation of PTH signaling responses is achieved through structure-encoded allosteric coupling within the receptor and between the peptide hormone binding site and the G protein coupling interface. The implications of recent findings are now being explored for addressing key questions on how location bias in receptor signaling contributes to pharmacological functions, and how to drug a difficult target such as the PTH1R toward discovering nonpeptidic small molecule candidates for the treatment of metabolic bone and mineral diseases.</p>","PeriodicalId":11544,"journal":{"name":"Endocrine reviews","volume":"44 3","pages":"474-491"},"PeriodicalIF":22.0,"publicationDate":"2023-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10461325/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10151703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}