1
|
Fernández-Arjona MDM, Navarro JA, López-Gambero AJ, de Ceglia M, Rodríguez M, Rubio L, Rodríguez de Fonseca F, Barrios V, Chowen JA, Argente J, Rivera P, Suárez J. Sex-based differences in growth-related IGF1 signaling in response to PAPP-A2 deficiency: comparative effects of rhGH, rhIGF1 and rhPAPP-A2 treatments. Biol Sex Differ 2024; 15:34. [PMID: 38589872 PMCID: PMC11000399 DOI: 10.1186/s13293-024-00603-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 03/15/2024] [Indexed: 04/10/2024] Open
Abstract
BACKGROUND Children with pregnancy-associated plasma protein-A2 (PAPP-A2) mutations resulting in low levels of bioactive insulin-like growth factor-1 (IGF1) and progressive postnatal growth retardation have improved growth velocity and height following recombinant human (rh)IGF1 treatment. The present study aimed to evaluate whether Pappa2 deficiency and pharmacological manipulation of GH/IGF1 system are associated with sex-specific differences in growth-related signaling pathways. METHODS Plasma, hypothalamus, pituitary gland and liver of Pappa2ko/ko mice of both sexes, showing reduced skeletal growth, and liver of these mice treated with rhGH, rhIGF1 and rhPAPP-A2 from postnatal day (PND) 5 to PND35 were analyzed. RESULTS Reduced body and femur length of Pappa2ko/ko mice was associated with increases in: (1) components of IGF1 ternary complexes (IGF1, IGFBP5/Igfbp5, Igfbp3, Igfals) in plasma, hypothalamus and/or liver; and (2) key signaling regulators (phosphorylated PI3K, AKT, mTOR, GSK3β, ERK1/2 and AMPKα) in hypothalamus, pituitary gland and/or liver, with Pappa2ko/ko females having a more prominent effect. Compared to rhGH and rhIGF1, rhPAPP-A2 specifically induced: (1) increased body and femur length, and reduced plasma total IGF1 and IGFBP5 concentrations in Pappa2ko/ko females; and (2) increased Igf1 and Igf1r levels and decreased Ghr, Igfbp3 and Igfals levels in the liver of Pappa2ko/ko females. These changes were accompanied by lower phospho-STAT5, phospho-AKT and phospho-ERK2 levels and higher phospho-AMPK levels in the liver of Pappa2ko/ko females. CONCLUSIONS Sex-specific differences in IGF1 system and signaling pathways are associated with Pappa2 deficiency, pointing to rhPAPP-A2 as a promising drug to alleviate postnatal growth retardation underlying low IGF1 bioavailability in a female-specific manner.
Collapse
Affiliation(s)
- María Del Mar Fernández-Arjona
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, Avenida Carlos Haya 82, Málaga, 29010, Spain
- Servicio de Neurología, Hospital Regional Universitario de Málaga, Málaga, 29010, Spain
| | - Juan Antonio Navarro
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, Avenida Carlos Haya 82, Málaga, 29010, Spain
- UGC Salud Mental, Hospital Regional Universitario de Málaga, Málaga, 29010, Spain
| | - Antonio Jesús López-Gambero
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, Avenida Carlos Haya 82, Málaga, 29010, Spain
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, Bordeaux, 33000, France
| | - Marialuisa de Ceglia
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, Avenida Carlos Haya 82, Málaga, 29010, Spain
- UGC Salud Mental, Hospital Regional Universitario de Málaga, Málaga, 29010, Spain
| | - Miguel Rodríguez
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, Avenida Carlos Haya 82, Málaga, 29010, Spain
- Departamento de Anatomía Humana, Medicina Legal e Historia de la Ciencia. Facultad de Medicina, Universidad de Málaga, Bulevar Louis Pasteur 32, Málaga, 29071, Spain
| | - Leticia Rubio
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, Avenida Carlos Haya 82, Málaga, 29010, Spain
- Departamento de Anatomía Humana, Medicina Legal e Historia de la Ciencia. Facultad de Medicina, Universidad de Málaga, Bulevar Louis Pasteur 32, Málaga, 29071, Spain
| | - Fernando Rodríguez de Fonseca
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, Avenida Carlos Haya 82, Málaga, 29010, Spain
- Servicio de Neurología, Hospital Regional Universitario de Málaga, Málaga, 29010, Spain
| | - Vicente Barrios
- Departments of Pediatrics & Pediatric Endocrinology, Hospital Infantil Universitario Niño Jesús, Avenida Menéndez Pelayo 65, Madrid, 28009, Spain
- La Princesa Research Institute, Madrid, 28009, Spain
- Centro de Investigación Biomédica en Red Fisiología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Madrid, 28029, Spain
| | - Julie A Chowen
- Departments of Pediatrics & Pediatric Endocrinology, Hospital Infantil Universitario Niño Jesús, Avenida Menéndez Pelayo 65, Madrid, 28009, Spain
- La Princesa Research Institute, Madrid, 28009, Spain
- Centro de Investigación Biomédica en Red Fisiología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Madrid, 28029, Spain
- IMDEA Food Institute, CEI UAM & CSIC, Madrid, 28049, Spain
| | - Jesús Argente
- Departments of Pediatrics & Pediatric Endocrinology, Hospital Infantil Universitario Niño Jesús, Avenida Menéndez Pelayo 65, Madrid, 28009, Spain.
- La Princesa Research Institute, Madrid, 28009, Spain.
- Department of Pediatrics, Universidad Autónoma de Madrid, Madrid, 28049, Spain.
- Centro de Investigación Biomédica en Red Fisiología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Madrid, 28029, Spain.
- IMDEA Food Institute, CEI UAM & CSIC, Madrid, 28049, Spain.
| | - Patricia Rivera
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, Avenida Carlos Haya 82, Málaga, 29010, Spain.
- UGC Salud Mental, Hospital Regional Universitario de Málaga, Málaga, 29010, Spain.
| | - Juan Suárez
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, Avenida Carlos Haya 82, Málaga, 29010, Spain.
- Departamento de Anatomía Humana, Medicina Legal e Historia de la Ciencia. Facultad de Medicina, Universidad de Málaga, Bulevar Louis Pasteur 32, Málaga, 29071, Spain.
| |
Collapse
|
2
|
Lamale-Smith LM, Gumina DL, Kramer AW, Browne VA, Toledo-Jaldin L, Julian CG, Winn VD, Moore LG. Uteroplacental Ischemia Is Associated with Increased PAPP-A2. Reprod Sci 2020; 27:529-536. [PMID: 31994005 DOI: 10.1007/s43032-019-00050-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Accepted: 04/22/2019] [Indexed: 11/29/2022]
Abstract
Residence at high altitude (> 2500 m) has been associated with an increased frequency of preeclampsia. Pappalysin-2 (PAPP-A2) is an insulin-like growth factor binding protein-5 (IGFBP-5) protease that is elevated in preeclampsia, and up-regulated by hypoxia in placental explants. The relationships between PAPP-A2, altitude, and indices of uteroplacental ischemia are unknown. We aimed to evaluate the association of altitude, preeclampsia, and uterine artery flow or vascular resistance with PAPP-A2 levels. PAPP-A2, uterine artery diameter, volumetric blood flow, and pulsatility indices were measured longitudinally in normotensive Andean women residing at low or high altitudes in Bolivia and in a separate Andean high-altitude cohort with or without preeclampsia. PAPP-A2 levels increased with advancing gestation, with the rise tending to be greater at high compared to low altitude, and higher in early-onset preeclamptic compared to normotensive women at high altitude. Uterine artery blood flow was markedly lower and pulsatility index higher in early-onset preeclamptic normotensive women compared to normotensive women. PAPP-A2 was unrelated to uterine artery pulsatility index in normotensive women but positively correlated in the early-onset preeclampsia cases. We concluded that PAPP-A2 is elevated at high altitude and especially in cases of early-onset preeclampsia with Doppler indices of uteroplacental ischemia.
Collapse
Affiliation(s)
- Leah M Lamale-Smith
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California San Diego, San Diego, CA, USA.
| | - Diane L Gumina
- Department of Obstetrics and Gynecology, University of Colorado Denver, Aurora, CO, USA
| | - Anita W Kramer
- Department of Obstetrics and Gynecology, University of Colorado Denver, Aurora, CO, USA
| | - Vaughn A Browne
- Department of Emergency Medicine, University of Colorado Denver, Aurora, CO, USA
| | | | - Colleen G Julian
- Department of Medicine, University of Colorado, Denver, Aurora, CO, USA
| | - Virginia D Winn
- Department of Obstetrics and Gynecology, Stanford University, Stanford, CA, USA
| | - Lorna G Moore
- Department of Obstetrics and Gynecology, University of Colorado Denver, Aurora, CO, USA
| |
Collapse
|
3
|
Amiri N, Christians JK. PAPP-A2 expression by osteoblasts is required for normal postnatal growth in mice. Growth Horm IGF Res 2015; 25:274-280. [PMID: 26385171 DOI: 10.1016/j.ghir.2015.09.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Revised: 08/17/2015] [Accepted: 09/07/2015] [Indexed: 12/19/2022]
Abstract
OBJECTIVE Pregnancy associated plasma protein-A2 (PAPP-A2) is a protease that cleaves insulin-like growth factor binding protein-5 (IGFBP-5), the most abundant IGFBP in bone. Deletion of Pappa2 reduces postnatal growth and bone length in mice. The aim of this study was to determine whether locally produced PAPP-A2 is required for normal bone growth. DESIGN We deleted Pappa2 primarily in osteoblasts by crossing conditional Pappa2 deletion mice with mice expressing Cre recombinase under the control of the Sp7 (Osterix) promoter. Effects of disrupting Pappa2 in Sp7-expressing cells were examined by measuring body mass and tail length at 3, 6, 10 and 12 weeks of age and bone dimensions at 12 weeks. RESULTS Body mass, tail length, and linear bone dimensions were significantly reduced at all ages by osteoblast-specific Pappa2 deletion. Mice homozygous for the conditional Pappa2 deletion allele and carrying the Cre transgene were smaller than controls carrying the Cre transgene, whereas mice homozygous for the conditional Pappa2 deletion allele were not smaller than controls when comparing mice not carrying the transgene. This result unambiguously demonstrates that PAPP-A2 produced by Sp7 expressing cells is required for normal growth. However, constitutive Pappa2 deletion had greater effects than osteoblast-specific Pappa2 deletion for many traits, indicating that post-natal growth is also affected by other sources of PAPP-A2. Immunohistochemistry revealed that PAPP-A2 localized in the epiphysis and metaphysis as well as osteoblasts, consistent with a role in bone growth. CONCLUSION Locally-produced PAPP-A2 is required for normal bone growth.
Collapse
Affiliation(s)
- Neilab Amiri
- Department of Biological Sciences, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada
| | - Julian K Christians
- Department of Biological Sciences, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada.
| |
Collapse
|
4
|
Christians JK, Bath AK, Amiri N. Pappa2 deletion alters IGFBPs but has little effect on glucose disposal or adiposity. Growth Horm IGF Res 2015; 25:232-239. [PMID: 26164771 DOI: 10.1016/j.ghir.2015.07.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Revised: 04/23/2015] [Accepted: 07/03/2015] [Indexed: 12/14/2022]
Abstract
OBJECTIVE Insulin-like growth factor binding proteins (IGFBPs) are involved in glucose and lipid metabolism, and their actions are modulated by proteases. The aim of this study was to examine the effects of an IGFBP-5 protease, pregnancy associated plasma protein-A2 (PAPP-A2), on glucose metabolism and susceptibility to diet-induced obesity. DESIGN Postnatal growth, circulating IGF-I, IGFBP-3 and IGFBP-5 levels, and glucose tolerance were measured in Pappa2 deletion mice and littermate controls on a chow diet. Males were subsequently fed a high-fat diet for 8 weeks to measure weight gain and adiposity, as well as glucose tolerance in response to a metabolic challenge. RESULTS Circulating IGFBP-5 levels were ~2-fold higher in mice with no functional PAPP-A2 than in littermate controls, as expected. In contrast, circulating IGFBP-3 levels were reduced by ~15-fold, and total IGF-I levels were ~60% higher in Pappa2 deletion mice. There was no effect of Pappa2 deletion on fasting blood glucose levels or glucose clearance after intraperitoneal injection of 2g glucose/kg body weight in mice on a chow diet. In males on a high-fat diet, there was no difference between genotypes in weight gain or adiposity, adjusting for differences in initial body weight, or in fasting blood glucose or insulin levels, or in glucose clearance. CONCLUSIONS Despite a dramatic disruption of the balance between circulating IGF-I, IGFBP-3 and -5, we found no effects of Pappa2 deletion on glucose metabolism, weight gain or adiposity on a high-fat diet.
Collapse
Affiliation(s)
- Julian K Christians
- Department of Biological Sciences, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada.
| | - Amrit K Bath
- Department of Biological Sciences, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada
| | - Neilab Amiri
- Department of Biological Sciences, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada
| |
Collapse
|