Towards an alternative to hormone treatments to control reproduction in small ruminants

Scientists from INRA and CNRS have created a pseudopeptide that could replace hormones of animal origin (eCG) in livestock reproduction management. This pseudopeptide is a stable analogue of kisspeptin and when administered via an intramuscular injection, triggers fertile ovulation in ewes. A finding with considerable potential for the management of livestock breeding!

Lambs born after treatment with C6 replacing the original figure. © Inra, M Beltramo
Updated on 09/05/2017
Published on 05/15/2017

Nowadays hormone treatments are widely employed by livestock breeders to control small ruminant reproduction and enable out of season reproduction, grouping births during short periods or speeding up genetic selection. This method is based on the administration of a glycoprotein hormone of animal origin, equine Chorionic Gonadotropin (eCG), in order to stimulate ovulation after an initial treatment with progestogen. The use of hormones in reproduction is associated with health and environmental risks (development of resistance to treatment, presence of residues in end-products or waste waters, etc.), and is under the strict regulation of the European Directive 96/22EC. To circumvent these problems new strategies to manage reproduction are in demand.

The search for hormone substitutes to control reproduction

Since several years, scientists at INRA and CNRS have been working on the development of substitutes for eCG, and have notably been exploring the use of kisspeptins. Kisspeptins are neuropeptides that play a central role in stimulating reproduction. Naturally present in the brain of mammals, these peptides trigger LH (luteinizing hormone) and FSH (follicle stimulating hormone) secretion through the stimulation of GnRH (gonadotropin-releasing hormone). However, the administration route (intravenous injection) and the metabolic instability of kisspeptins constitute major obstacles to their use in the field. 

Stabilising  kisspeptins

By introducing targeted chemical modifications, scientists in the Joint Research Unit for the Physiology of Reproduction and Behaviours (UMR PRC) and the Centre for Molecular Biophysics (UPR CBM; see contact list) have created a first generation of kisspeptin analogues that are more resistant to degradation and whose pharmacological profile is improved when compared to kisspeptins. An initial patent on these molecules was filed in 2013 (EP 2014/051886 - WO 2014/118318 A1). This project received support from the Région Centre-Val de Loire, (Reprokiss project, 2012-2015).

C6: a particularly interesting analogue

In the context of the Kiss and Capriss projects (see insert), scientists from the PRC, CBM, ICOA and the company Repropharm (see contact list) worked to optimise this first generation of molecules. They notably obtained a particularly effective compound that they called C6. It contains a 1,2,3-triazole heterocycle instead of a peptide bond particularly sensitive to protease degradation, a methyl group on arginine 9 and an albumin binding motif, palmitoyl-glutamate, at the N terminus. All these modifications procure greater resistance to degradation and prolonged in vivo action, as shown by their considerable efficacy in increasing plasma LH and FSH levels in ewes. In addition, C6 is active when administered by intramuscular injection and, at a dose of 15 nmol/animal in ewes pre-treated with a progestogen, has been able to induce fertile ovulations in both the breeding and non-breeding seasons. C6 could therefore represent a potential alternative to the use of eCG. Experiments are now under way to evaluate the possibility of using a kisspeptin analogue to replace progestogen hormones during the non-breeding season.
Complementary experiments with C6 have also shown its capacity to advance puberty in mice. These results, even though obtained in a rodent model, underline the potential of this analogue to manage reproduction during the whole lifespan of livestock.

Contact(s)
Scientific contact(s):

Other contact(s):
Associated Division(s):
Attribute Type Value
node_id string 101457
parent_node_id string 232
main_node_id string 101457
contentobject_id string 94919
contentobject_version string 86
contentobject_is_published string 1
depth string 3
sort_field string 1
sort_order string 1
priority string 1
modified_subnode string 1505980590
path_string string '/1/2/232/101457/'
path_identification_string string 'sitedept/deptunite29'
remote_id string 'e12662f8681b32e1a3391421983f521c'
is_hidden string 0
is_invisible string 0
name string 'Animal Physiology and Livestock Systems '
data_map array Array(33)
>seo object[eZContentObjectAttribute] Object
>title object[eZContentObjectAttribute] Object
>bloc_xml_introduction object[eZContentObjectAttribute] Object
>bloc_xml_presentation object[eZContentObjectAttribute] Object
>shortchapo object[eZContentObjectAttribute] Object
>zoom_news object[eZContentObjectAttribute] Object
>url object[eZContentObjectAttribute] Object
>mail_contact object[eZContentObjectAttribute] Object
>contact object[eZContentObjectAttribute] Object
>address object[eZContentObjectAttribute] Object
>robots object[eZContentObjectAttribute] Object
>metadescription object[eZContentObjectAttribute] Object
>centercode object[eZContentObjectAttribute] Object
>pathprefix object[eZContentObjectAttribute] Object
>display_twitterbar object[eZContentObjectAttribute] Object
>url_communitylink1 object[eZContentObjectAttribute] Object
>logo_communitylink1 object[eZContentObjectAttribute] Object
>url_communitylink2 object[eZContentObjectAttribute] Object
>logo_communitylink2 object[eZContentObjectAttribute] Object
>url_communitylink3 object[eZContentObjectAttribute] Object
>logo_communitylink3 object[eZContentObjectAttribute] Object
>url_communitylink4 object[eZContentObjectAttribute] Object
>logo_communitylink4 object[eZContentObjectAttribute] Object
>bloc_edito_intro object[eZContentObjectAttribute] Object
>bloc_edito_presentation object[eZContentObjectAttribute] Object
>jobdisplay object[eZContentObjectAttribute] Object
>visual object[eZContentObjectAttribute] Object
>credits object[eZContentObjectAttribute] Object
>mentions object[eZContentObjectAttribute] Object
>arborh object[eZContentObjectAttribute] Object
>extranet_link object[eZContentObjectAttribute] Object
>jobteaser object[eZContentObjectAttribute] Object
>urlteaser object[eZContentObjectAttribute] Object
object object[eZContentObject] Object
>id string 94919
>section_id string 1
>owner_id string 14
>contentclass_id string 50
>name string 'Animal Physiology and Livestock Systems '
>published string 1358170894
>modified string 1499848260
>current_version string 86
>status string 1
>remote_id string '9d2c5d3b0e740f58ed01a4ab24018c10'
>language_mask string 6
>initial_language_id string 2
>current object[eZContentObjectVersion] Object
>versions array Array(10)
>author_array array Array(2)
>class_name string 'Département : Site'
>content_class object[eZContentClass] Object
>contentobject_attributes array Array(33)
>owner object[eZContentObject] Object
>related_contentobject_array array Array(0)
>related_contentobject_count string 0
>reverse_related_contentobject_array array Array(0)
>reverse_related_contentobject_count string 4
>linked_contentobject_array array Array(0)
>linked_contentobject_count string 0
>reverse_linked_contentobject_array array Array(0)
>reverse_linked_contentobject_count string 4
>embedded_contentobject_array array Array(0)
>embedded_contentobject_count string 0
>reverse_embedded_contentobject_array array Array(0)
>reverse_embedded_contentobject_count string 0
>can_read boolean true
>can_pdf boolean true
>can_diff boolean false
>can_create boolean false
>can_create_class_list array Array(0)
>can_edit boolean false
>can_translate boolean false
>can_remove boolean false
>can_move boolean false
>can_move_from boolean false
>can_view_embed boolean false
>data_map array Array(33)
>grouped_data_map array Array(1)
>main_parent_node_id string 232
>assigned_nodes array Array(1)
>parent_nodes array Array(1)
>main_node_id string 101457
>main_node object[eZContentObjectTreeNode] Object
>default_language string 'eng-GB'
>content_action_list boolean false
>class_identifier string 'inra_departement'
>class_group_id_list array Array(1)
>match_ingroup_id_list boolean false
>current_language string 'eng-GB'
>current_language_object object[eZContentLanguage] Object
>initial_language object[eZContentLanguage] Object
>initial_language_code string 'fre-FR'
>available_languages array Array(1)
>language_codes array Array(1)
>language_js_array string '[{"locale":"eng-GB","name":"English (United Kingdom)"}]'
>languages array Array(1)
>all_languages array Array(2)
>can_edit_languages array Array(0)
>can_create_languages array Array(0)
>always_available integer 0
>allowed_assign_section_list array Array(1)
>allowed_assign_state_id_list array Array(1)
>allowed_assign_state_list array Array(0)
>state_id_array array Array(1)
>state_identifier_array array Array(1)
subtree array Array(102)
>0 object[eZContentObjectTreeNode] Object
>1 object[eZContentObjectTreeNode] Object
>2 object[eZContentObjectTreeNode] Object
>3 object[eZContentObjectTreeNode] Object
>4 object[eZContentObjectTreeNode] Object
>5 object[eZContentObjectTreeNode] Object
>6 object[eZContentObjectTreeNode] Object
>7 object[eZContentObjectTreeNode] Object
>8 object[eZContentObjectTreeNode] Object
>9 object[eZContentObjectTreeNode] Object
>10 object[eZContentObjectTreeNode] Object
>11 object[eZContentObjectTreeNode] Object
>12 object[eZContentObjectTreeNode] Object
>13 object[eZContentObjectTreeNode] Object
>14 object[eZContentObjectTreeNode] Object
>15 object[eZContentObjectTreeNode] Object
>16 object[eZContentObjectTreeNode] Object
>17 object[eZContentObjectTreeNode] Object
>18 object[eZContentObjectTreeNode] Object
>19 object[eZContentObjectTreeNode] Object
>20 object[eZContentObjectTreeNode] Object
>21 object[eZContentObjectTreeNode] Object
>22 object[eZContentObjectTreeNode] Object
>23 object[eZContentObjectTreeNode] Object
>24 object[eZContentObjectTreeNode] Object
>25 object[eZContentObjectTreeNode] Object
>26 object[eZContentObjectTreeNode] Object
>27 object[eZContentObjectTreeNode] Object
>28 object[eZContentObjectTreeNode] Object
>29 object[eZContentObjectTreeNode] Object
>30 object[eZContentObjectTreeNode] Object
>31 object[eZContentObjectTreeNode] Object
>32 object[eZContentObjectTreeNode] Object
>33 object[eZContentObjectTreeNode] Object
>34 object[eZContentObjectTreeNode] Object
>35 object[eZContentObjectTreeNode] Object
>36 object[eZContentObjectTreeNode] Object
>37 object[eZContentObjectTreeNode] Object
>38 object[eZContentObjectTreeNode] Object
>39 object[eZContentObjectTreeNode] Object
>40 object[eZContentObjectTreeNode] Object
>41 object[eZContentObjectTreeNode] Object
>42 object[eZContentObjectTreeNode] Object
>43 object[eZContentObjectTreeNode] Object
>44 object[eZContentObjectTreeNode] Object
>45 object[eZContentObjectTreeNode] Object
>46 object[eZContentObjectTreeNode] Object
>47 object[eZContentObjectTreeNode] Object
>48 object[eZContentObjectTreeNode] Object
>49 object[eZContentObjectTreeNode] Object
>50 object[eZContentObjectTreeNode] Object
>51 object[eZContentObjectTreeNode] Object
>52 object[eZContentObjectTreeNode] Object
>53 object[eZContentObjectTreeNode] Object
>54 object[eZContentObjectTreeNode] Object
>55 object[eZContentObjectTreeNode] Object
>56 object[eZContentObjectTreeNode] Object
>57 object[eZContentObjectTreeNode] Object
>58 object[eZContentObjectTreeNode] Object
>59 object[eZContentObjectTreeNode] Object
>60 object[eZContentObjectTreeNode] Object
>61 object[eZContentObjectTreeNode] Object
>62 object[eZContentObjectTreeNode] Object
>63 object[eZContentObjectTreeNode] Object
>64 object[eZContentObjectTreeNode] Object
>65 object[eZContentObjectTreeNode] Object
>66 object[eZContentObjectTreeNode] Object
>67 object[eZContentObjectTreeNode] Object
>68 object[eZContentObjectTreeNode] Object
>69 object[eZContentObjectTreeNode] Object
>70 object[eZContentObjectTreeNode] Object
>71 object[eZContentObjectTreeNode] Object
>72 object[eZContentObjectTreeNode] Object
>73 object[eZContentObjectTreeNode] Object
>74 object[eZContentObjectTreeNode] Object
>75 object[eZContentObjectTreeNode] Object
>76 object[eZContentObjectTreeNode] Object
>77 object[eZContentObjectTreeNode] Object
>78 object[eZContentObjectTreeNode] Object
>79 object[eZContentObjectTreeNode] Object
>80 object[eZContentObjectTreeNode] Object
>81 object[eZContentObjectTreeNode] Object
>82 object[eZContentObjectTreeNode] Object
>83 object[eZContentObjectTreeNode] Object
>84 object[eZContentObjectTreeNode] Object
>85 object[eZContentObjectTreeNode] Object
>86 object[eZContentObjectTreeNode] Object
>87 object[eZContentObjectTreeNode] Object
>88 object[eZContentObjectTreeNode] Object
>89 object[eZContentObjectTreeNode] Object
>90 object[eZContentObjectTreeNode] Object
>91 object[eZContentObjectTreeNode] Object
>92 object[eZContentObjectTreeNode] Object
>93 object[eZContentObjectTreeNode] Object
>94 object[eZContentObjectTreeNode] Object
>95 object[eZContentObjectTreeNode] Object
>96 object[eZContentObjectTreeNode] Object
>97 object[eZContentObjectTreeNode] Object
>98 object[eZContentObjectTreeNode] Object
>99 object[eZContentObjectTreeNode] Object
>100 object[eZContentObjectTreeNode] Object
>101 object[eZContentObjectTreeNode] Object
children array Array(8)
>0 object[eZContentObjectTreeNode] Object
>1 object[eZContentObjectTreeNode] Object
>2 object[eZContentObjectTreeNode] Object
>3 object[eZContentObjectTreeNode] Object
>4 object[eZContentObjectTreeNode] Object
>5 object[eZContentObjectTreeNode] Object
>6 object[eZContentObjectTreeNode] Object
>7 object[eZContentObjectTreeNode] Object
children_count string 8
view_count integer 0
contentobject_version_object object[eZContentObjectVersion] Object
>id string 437113
>contentobject_id string 94919
>creator_id string 95431
>version string 86
>status string 1
>created string 1499848172
>modified string 1499848258
>workflow_event_pos string 0
>user_id string 0
>language_mask string 7
>initial_language_id string 2
>creator object[eZContentObject] Object
>name string 'Physiologie animale et systèmes d’élevage'
>version_name string 'Physiologie animale et systèmes d’élevage'
>main_parent_node_id string 232
>contentobject_attributes array Array(33)
>related_contentobject_array array Array(0)
>reverse_related_object_list array Array(0)
>parent_nodes array Array(1)
>can_read boolean false
>can_remove boolean false
>data_map array Array(33)
>node_assignments array Array(1)
>contentobject object[eZContentObject] Object
>initial_language object[eZContentLanguage] Object
>language_list array Array(2)
>translation boolean false
>translation_list array Array(2)
>complete_translation_list array Array(2)
>temp_main_node object[eZContentObjectTreeNode] Object
sort_array array Array(1)
>0 array Array(2)
can_read boolean true
can_pdf boolean true
can_create boolean false
can_edit boolean false
can_hide boolean false
can_remove boolean false
can_move boolean false
can_move_from boolean false
can_add_location boolean false
can_remove_location boolean false
can_view_embed boolean false
is_main boolean true
creator object[eZContentObject] Object
>id string 95431
>section_id string 2
>owner_id string 14
>contentclass_id string 4
>name string 'André Sylvie'
>published string 1358178977
>modified string 1466748316
>current_version string 2
>status string 1
>remote_id string 'af6fd02929d6c9b323223240f1c60d6f'
>language_mask string 3
>initial_language_id string 2
>current object[eZContentObjectVersion] Object
>versions array Array(2)
>author_array array Array(2)
>class_name string 'User'
>content_class object[eZContentClass] Object
>contentobject_attributes array Array(5)
>owner object[eZContentObject] Object
>related_contentobject_array array Array(0)
>related_contentobject_count string 0
>reverse_related_contentobject_array array Array(0)
>reverse_related_contentobject_count string 0
>linked_contentobject_array array Array(0)
>linked_contentobject_count string 0
>reverse_linked_contentobject_array array Array(0)
>reverse_linked_contentobject_count string 0
>embedded_contentobject_array array Array(0)
>embedded_contentobject_count string 0
>reverse_embedded_contentobject_array array Array(0)
>reverse_embedded_contentobject_count string 0
>can_read boolean false
>can_pdf boolean false
>can_diff boolean false
>can_create boolean false
>can_create_class_list array Array(0)
>can_edit boolean false
>can_translate boolean false
>can_remove boolean false
>can_move boolean false
>can_move_from boolean false
>can_view_embed boolean false
>data_map array Array(5)
>grouped_data_map array Array(1)
>main_parent_node_id string 312
>assigned_nodes array Array(2)
>parent_nodes array Array(2)
>main_node_id string 101989
>main_node object[eZContentObjectTreeNode] Object
>default_language string 'eng-GB'
>content_action_list boolean false
>class_identifier string 'user'
>class_group_id_list array Array(1)
>match_ingroup_id_list boolean false
>current_language string 'fre-FR'
>current_language_object object[eZContentLanguage] Object
>initial_language object[eZContentLanguage] Object
>initial_language_code string 'fre-FR'
>available_languages array Array(0)
>language_codes array Array(0)
>language_js_array boolean false
>languages array Array(0)
>all_languages array Array(1)
>can_edit_languages array Array(0)
>can_create_languages array Array(0)
>always_available integer 1
>allowed_assign_section_list array Array(1)
>allowed_assign_state_id_list array Array(1)
>allowed_assign_state_list array Array(0)
>state_id_array array Array(1)
>state_identifier_array array Array(1)
path_with_names string 'sitedept/deptunite29'
path array Array(2)
>0 object[eZContentObjectTreeNode] Object
>1 object[eZContentObjectTreeNode] Object
path_array array Array(4)
>0 integer 1
>1 integer 2
>2 integer 232
>3 integer 101457
parent object[eZContentObjectTreeNode] Object
>node_id string 232
>parent_node_id string 2
>main_node_id string 232
>contentobject_id string 219
>contentobject_version string 61
>contentobject_is_published string 1
>depth string 2
>sort_field string 9
>sort_order string 1
>priority string 2
>modified_subnode string 1506087041
>path_string string '/1/2/232/'
>path_identification_string string 'sitedept'
>remote_id string '702cee6c5bb3a0f2459eb4705cbf71aa'
>is_hidden string 0
>is_invisible string 0
>name string 'INRA Divisions'
>data_map array Array(23)
>object object[eZContentObject] Object
>subtree array Array(803)
>children array Array(17)
>children_count string 17
>view_count integer 0
>contentobject_version_object object[eZContentObjectVersion] Object
>sort_array array Array(1)
>can_read boolean true
>can_pdf boolean true
>can_create boolean false
>can_edit boolean false
>can_hide boolean false
>can_remove boolean false
>can_move boolean false
>can_move_from boolean false
>can_add_location boolean false
>can_remove_location boolean false
>can_view_embed boolean false
>is_main boolean true
>creator object[eZContentObject] Object
>path_with_names string 'sitedept'
>path array Array(1)
>path_array array Array(3)
>parent object[eZContentObjectTreeNode] Object
>url string 'sitedept'
>url_alias string 'sitedept'
>class_identifier string 'inra_site_departements'
>class_name string 'Départements : Dispatch'
>hidden_invisible_string string '-/-'
>hidden_status_string string 'Visible'
>classes_js_array string '[{"classID":57,"name":"Actualit\u00e9"},{"classID":131,"name":"Annuaire : Rubrique"},{"classID":16,"name":"Article"},{"classID":17,"name":"Article (main-page)"},{"classID":18,"name":"Article (sub-page)"},{"classID":42,"name":"Banner"},{"classID":19,"name":"Blog"},{"classID":81,"name":"Blog : Billet"},{"classID":101,"name":"Blog : Billet marque blanche"},{"classID":62,"name":"Blog : Blog"},{"classID":99,"name":"Blog : Blog marque blanche"},{"classID":82,"name":"Blog : Rubrique additionnelle"},{"classID":20,"name":"Blog post"},{"classID":127,"name":"Br\u00e8ve"},{"classID":60,"name":"Carrousel : Actu de carrousel"},{"classID":143,"name":"Carrousel : Diapositive autonome"},{"classID":168,"name":"Carrousels"},{"classID":56,"name":"Centre : Site"},{"classID":94,"name":"Centres : Dispatch"},{"classID":13,"name":"Comment"},{"classID":50,"name":"D\u00e9partement : Site"},{"classID":95,"name":"D\u00e9partements : Dispatch"},{"classID":71,"name":"Digital Asset (Media)"},{"classID":24,"name":"Documentation page"},{"classID":154,"name":"Dossier"},{"classID":116,"name":"Dossier 'Parutions'"},{"classID":76,"name":"Dossier 'Quizs'"},{"classID":169,"name":"Dossier actu secondaire"},{"classID":89,"name":"Ev\u00e9nement"},{"classID":88,"name":"Ev\u00e9nements : Racine"},{"classID":40,"name":"Event"},{"classID":41,"name":"Event calendar"},{"classID":22,"name":"Feedback form"},{"classID":28,"name":"File"},{"classID":29,"name":"Flash"},{"classID":1,"name":"Folder"},{"classID":37,"name":"Forum"},{"classID":39,"name":"Forum reply"},{"classID":38,"name":"Forum topic"},{"classID":43,"name":"Forums"},{"classID":23,"name":"Frontpage"},{"classID":35,"name":"Gallery"},{"classID":36,"name":"Geo Article"},{"classID":145,"name":"Glossaire : Mot"},{"classID":30,"name":"Image"},{"classID":25,"name":"Infobox"},{"classID":130,"name":"Instit : Fiche Annuaire"},{"classID":140,"name":"Instit : Nous trouver"},{"classID":48,"name":"Instit : Racine"},{"classID":133,"name":"Instit : Rubrique 'Actu'"},{"classID":139,"name":"Instit : Th\u00e8me 'Annuaire'"},{"classID":134,"name":"Instit : Th\u00e8me 'Missions'"},{"classID":137,"name":"Instit : Th\u00e8me 'Organisation'"},{"classID":135,"name":"Instit : Th\u00e8me 'Rep\u00e8res'"},{"classID":136,"name":"Instit : Th\u00e8me 'Strat\u00e9gie'"},{"classID":46,"name":"Kiosque : Racine"},{"classID":31,"name":"Link"},{"classID":201,"name":"Logo"},{"classID":72,"name":"Magazine"},{"classID":142,"name":"Mediath\u00e8que : Mot cl\u00e9"},{"classID":149,"name":"Mediath\u00e8que : Playlist"},{"classID":52,"name":"Mediath\u00e8que : Racine"},{"classID":150,"name":"Mediath\u00e8que : Rubrique 'Mots cl\u00e9s'"},{"classID":148,"name":"Mediath\u00e8que : Rubrique 'Playlist'"},{"classID":141,"name":"Mediath\u00e8que : Rubrique 'Zoom'"},{"classID":199,"name":"Mediath\u00e8que : Rubrique simple"},{"classID":121,"name":"M\u00e9taprogramme : Site"},{"classID":96,"name":"M\u00e9taprogrammes : Dispatch"},{"classID":161,"name":"Mon Compte"},{"classID":124,"name":"Mon Compte : Utilisateur Front"},{"classID":26,"name":"Multicalendar"},{"classID":119,"name":"Newsletter : Abonn\u00e9"},{"classID":104,"name":"Newsletter : Bloc s\u00e9l\u00e9ction"},{"classID":105,"name":"Newsletter : Bloc texte"},{"classID":103,"name":"Newsletter : Campagne simple"},{"classID":102,"name":"Newsletter : Campagne sp\u00e9ciale"},{"classID":120,"name":"Newsletter : Dossier 'Abonn\u00e9s'"},{"classID":122,"name":"Newsletter : Dossier 'D\u00e9sinscrits'"},{"classID":125,"name":"Newsletter : Dossier 'Entreprises'"},{"classID":126,"name":"Newsletter : Entreprise"},{"classID":100,"name":"Newsletter : Newsletter"},{"classID":92,"name":"Parution"},{"classID":27,"name":"Poll"},{"classID":47,"name":"Portail : Canal"},{"classID":45,"name":"Portail : Racine"},{"classID":53,"name":"Portail : Th\u00e8me"},{"classID":185,"name":"Portrait"},{"classID":163,"name":"Portrait Old"},{"classID":87,"name":"Presse : Accueil public"},{"classID":108,"name":"Presse : Biographie"},{"classID":91,"name":"Presse : Communiqu\u00e9"},{"classID":118,"name":"Presse : Dossier 'Biographies'"},{"classID":112,"name":"Presse : Dossier 'Communiqu\u00e9s'"},{"classID":115,"name":"Presse : Dossier 'Dossiers de presse'"},{"classID":203,"name":"Presse : Dossier 'Kits de presse'"},{"classID":107,"name":"Presse : Dossier de presse"},{"classID":63,"name":"Presse : Inscription"},{"classID":205,"name":"Presse : Kit de presse"},{"classID":51,"name":"Presse : Racine"},{"classID":21,"name":"Product"},{"classID":32,"name":"Quicktime"},{"classID":73,"name":"Quiz : Accueil"},{"classID":74,"name":"Quiz : Question"},{"classID":195,"name":"Quiz : question - r\u00e9ponse"},{"classID":75,"name":"Quiz : R\u00e9ponse"},{"classID":69,"name":"Racine"},{"classID":34,"name":"Real video"},{"classID":179,"name":"RH : Annonce permanente"},{"classID":176,"name":"RH : Annonce temporaire"},{"classID":181,"name":"RH : Article simple"},{"classID":172,"name":"RH : Campagne permanente"},{"classID":180,"name":"RH : Campagne temporaire"},{"classID":207,"name":"RH : Connexion Espagnole"},{"classID":187,"name":"RH : Discipline scientifique"},{"classID":193,"name":"RH : Domaine professionnel"},{"classID":165,"name":"RH : dossier 'Portraits'"},{"classID":177,"name":"RH : Dossier Reportages"},{"classID":183,"name":"RH : Fichier description"},{"classID":184,"name":"RH : Fichier inscription"},{"classID":178,"name":"RH : Folder annonces"},{"classID":197,"name":"RH : mobilit\u00e9 internationale"},{"classID":171,"name":"RH : Proc\u00e9dure"},{"classID":49,"name":"RH : Racine"},{"classID":175,"name":"RH : R\u00e9gion"},{"classID":167,"name":"RH : Rubrique"},{"classID":164,"name":"RH : Rubrique 'Actu'"},{"classID":170,"name":"RH : Rubrique emploi"},{"classID":174,"name":"RH : textes candidatures"},{"classID":189,"name":"RH : Type d'annonce"},{"classID":191,"name":"RH : Type nature de contrat"},{"classID":106,"name":"RSS : Flux"},{"classID":129,"name":"Rubrique texte simple"},{"classID":146,"name":"SEO : Robots txt"},{"classID":147,"name":"SEO : Sitemap xml"},{"classID":151,"name":"SEO : Valeurs par d\u00e9faut"},{"classID":44,"name":"Silverlight"},{"classID":166,"name":"Sites : Rubrique"},{"classID":33,"name":"Windows media"},{"classID":182,"name":"Xiti : Identifiants Home"}]'
>is_container string 1
url string 'sitedept/deptunite29'
url_alias string 'sitedept/deptunite29'
class_identifier string 'inra_departement'
class_name string 'Département : Site'
hidden_invisible_string string '-/-'
hidden_status_string string 'Visible'
classes_js_array string '[{"classID":57,"name":"Actualit\u00e9"},{"classID":131,"name":"Annuaire : Rubrique"},{"classID":16,"name":"Article"},{"classID":17,"name":"Article (main-page)"},{"classID":18,"name":"Article (sub-page)"},{"classID":42,"name":"Banner"},{"classID":19,"name":"Blog"},{"classID":81,"name":"Blog : Billet"},{"classID":101,"name":"Blog : Billet marque blanche"},{"classID":62,"name":"Blog : Blog"},{"classID":99,"name":"Blog : Blog marque blanche"},{"classID":82,"name":"Blog : Rubrique additionnelle"},{"classID":20,"name":"Blog post"},{"classID":127,"name":"Br\u00e8ve"},{"classID":60,"name":"Carrousel : Actu de carrousel"},{"classID":143,"name":"Carrousel : Diapositive autonome"},{"classID":168,"name":"Carrousels"},{"classID":56,"name":"Centre : Site"},{"classID":94,"name":"Centres : Dispatch"},{"classID":13,"name":"Comment"},{"classID":50,"name":"D\u00e9partement : Site"},{"classID":95,"name":"D\u00e9partements : Dispatch"},{"classID":71,"name":"Digital Asset (Media)"},{"classID":24,"name":"Documentation page"},{"classID":154,"name":"Dossier"},{"classID":116,"name":"Dossier 'Parutions'"},{"classID":76,"name":"Dossier 'Quizs'"},{"classID":169,"name":"Dossier actu secondaire"},{"classID":89,"name":"Ev\u00e9nement"},{"classID":88,"name":"Ev\u00e9nements : Racine"},{"classID":40,"name":"Event"},{"classID":41,"name":"Event calendar"},{"classID":22,"name":"Feedback form"},{"classID":28,"name":"File"},{"classID":29,"name":"Flash"},{"classID":1,"name":"Folder"},{"classID":37,"name":"Forum"},{"classID":39,"name":"Forum reply"},{"classID":38,"name":"Forum topic"},{"classID":43,"name":"Forums"},{"classID":23,"name":"Frontpage"},{"classID":35,"name":"Gallery"},{"classID":36,"name":"Geo Article"},{"classID":145,"name":"Glossaire : Mot"},{"classID":30,"name":"Image"},{"classID":25,"name":"Infobox"},{"classID":130,"name":"Instit : Fiche Annuaire"},{"classID":140,"name":"Instit : Nous trouver"},{"classID":48,"name":"Instit : Racine"},{"classID":133,"name":"Instit : Rubrique 'Actu'"},{"classID":139,"name":"Instit : Th\u00e8me 'Annuaire'"},{"classID":134,"name":"Instit : Th\u00e8me 'Missions'"},{"classID":137,"name":"Instit : Th\u00e8me 'Organisation'"},{"classID":135,"name":"Instit : Th\u00e8me 'Rep\u00e8res'"},{"classID":136,"name":"Instit : Th\u00e8me 'Strat\u00e9gie'"},{"classID":46,"name":"Kiosque : Racine"},{"classID":31,"name":"Link"},{"classID":201,"name":"Logo"},{"classID":72,"name":"Magazine"},{"classID":142,"name":"Mediath\u00e8que : Mot cl\u00e9"},{"classID":149,"name":"Mediath\u00e8que : Playlist"},{"classID":52,"name":"Mediath\u00e8que : Racine"},{"classID":150,"name":"Mediath\u00e8que : Rubrique 'Mots cl\u00e9s'"},{"classID":148,"name":"Mediath\u00e8que : Rubrique 'Playlist'"},{"classID":141,"name":"Mediath\u00e8que : Rubrique 'Zoom'"},{"classID":199,"name":"Mediath\u00e8que : Rubrique simple"},{"classID":121,"name":"M\u00e9taprogramme : Site"},{"classID":96,"name":"M\u00e9taprogrammes : Dispatch"},{"classID":161,"name":"Mon Compte"},{"classID":124,"name":"Mon Compte : Utilisateur Front"},{"classID":26,"name":"Multicalendar"},{"classID":119,"name":"Newsletter : Abonn\u00e9"},{"classID":104,"name":"Newsletter : Bloc s\u00e9l\u00e9ction"},{"classID":105,"name":"Newsletter : Bloc texte"},{"classID":103,"name":"Newsletter : Campagne simple"},{"classID":102,"name":"Newsletter : Campagne sp\u00e9ciale"},{"classID":120,"name":"Newsletter : Dossier 'Abonn\u00e9s'"},{"classID":122,"name":"Newsletter : Dossier 'D\u00e9sinscrits'"},{"classID":125,"name":"Newsletter : Dossier 'Entreprises'"},{"classID":126,"name":"Newsletter : Entreprise"},{"classID":100,"name":"Newsletter : Newsletter"},{"classID":92,"name":"Parution"},{"classID":27,"name":"Poll"},{"classID":47,"name":"Portail : Canal"},{"classID":45,"name":"Portail : Racine"},{"classID":53,"name":"Portail : Th\u00e8me"},{"classID":185,"name":"Portrait"},{"classID":163,"name":"Portrait Old"},{"classID":87,"name":"Presse : Accueil public"},{"classID":108,"name":"Presse : Biographie"},{"classID":91,"name":"Presse : Communiqu\u00e9"},{"classID":118,"name":"Presse : Dossier 'Biographies'"},{"classID":112,"name":"Presse : Dossier 'Communiqu\u00e9s'"},{"classID":115,"name":"Presse : Dossier 'Dossiers de presse'"},{"classID":203,"name":"Presse : Dossier 'Kits de presse'"},{"classID":107,"name":"Presse : Dossier de presse"},{"classID":63,"name":"Presse : Inscription"},{"classID":205,"name":"Presse : Kit de presse"},{"classID":51,"name":"Presse : Racine"},{"classID":21,"name":"Product"},{"classID":32,"name":"Quicktime"},{"classID":73,"name":"Quiz : Accueil"},{"classID":74,"name":"Quiz : Question"},{"classID":195,"name":"Quiz : question - r\u00e9ponse"},{"classID":75,"name":"Quiz : R\u00e9ponse"},{"classID":69,"name":"Racine"},{"classID":34,"name":"Real video"},{"classID":179,"name":"RH : Annonce permanente"},{"classID":176,"name":"RH : Annonce temporaire"},{"classID":181,"name":"RH : Article simple"},{"classID":172,"name":"RH : Campagne permanente"},{"classID":180,"name":"RH : Campagne temporaire"},{"classID":207,"name":"RH : Connexion Espagnole"},{"classID":187,"name":"RH : Discipline scientifique"},{"classID":193,"name":"RH : Domaine professionnel"},{"classID":165,"name":"RH : dossier 'Portraits'"},{"classID":177,"name":"RH : Dossier Reportages"},{"classID":183,"name":"RH : Fichier description"},{"classID":184,"name":"RH : Fichier inscription"},{"classID":178,"name":"RH : Folder annonces"},{"classID":197,"name":"RH : mobilit\u00e9 internationale"},{"classID":171,"name":"RH : Proc\u00e9dure"},{"classID":49,"name":"RH : Racine"},{"classID":175,"name":"RH : R\u00e9gion"},{"classID":167,"name":"RH : Rubrique"},{"classID":164,"name":"RH : Rubrique 'Actu'"},{"classID":170,"name":"RH : Rubrique emploi"},{"classID":174,"name":"RH : textes candidatures"},{"classID":189,"name":"RH : Type d'annonce"},{"classID":191,"name":"RH : Type nature de contrat"},{"classID":106,"name":"RSS : Flux"},{"classID":129,"name":"Rubrique texte simple"},{"classID":146,"name":"SEO : Robots txt"},{"classID":147,"name":"SEO : Sitemap xml"},{"classID":151,"name":"SEO : Valeurs par d\u00e9faut"},{"classID":44,"name":"Silverlight"},{"classID":166,"name":"Sites : Rubrique"},{"classID":33,"name":"Windows media"},{"classID":182,"name":"Xiti : Identifiants Home"}]'
is_container string 1
Animal Physiology and Livestock Systems
Associated Centre(s):
Val de Loire

Find out more

  • M. Beltramo, V. Aucagne, A. Caraty, A. F. Delmas. Composés agonistes du KISS1R et leur utilisation pour induire l’ovulation chez les mammifères. French patent application no. 50858 filed on 31/01/2013. PCT/EP2014/051886, published as ref. WO2014118318, national phases in Europe, Canada, USA, Australia, Brazil.
  • M. Beltramo, V. Robert, M. Galibert, J.-B. Madinier, P. Marceau, H. Dardente, N. De Roux, D. Lomet, A. F. Delmas, A. Caraty, V. Aucagne Rational design of triazolo-lipopeptides analogues of kisspeptin inducing a long-lasting increase of gonadotrophins. The Journal of Medicinal Chemistry, 2015, 58, 3459−3470.
  • C. Decourt, V. Robert, K. Anger, M. Galibert, J.-B. Madinier, H. Dardente, D. Lomet, A. F. Delmas, A. Caraty, A. Herbison, X. Liu, G. Anderson, V. Aucagne, M. Beltramo A synthetic kisspeptin analog that triggers ovulation and advances puberty. Scientific Reports, 6, 26908; doi: 10.1038/srep26908 (2016)

ReproPharm

Set up in 2009 and based on the INRA site in Tours, ReproPharm is a young, innovative company working in the field of animal reproduction as it concerns sheep, goat, cattle and pig breeding. It provides to research professionals, breeding technicians and breeders with efficient solutions resulting from INRA know-how.

For more information: www.repropharm.com

For more information on the Kiss and Capriss projects

  • The Capriss project (2015-2018), funded by the Centre-Val de Loire Region to a value of €200,000 over a three-year period, is studying the effect of a kisspeptin analogue in goats. It should achieve proof of concept of the efficacy of this analogue in triggering ovulation during a period of anoestrus after a single injection. A second generation of optimised molecules for use in livestock will also be synthesised.
  • The Kiss project (2015-2019), funded by the ANR to a value of €600,000 over a four-year period, is focusing firstly on better understanding the functioning of kisspeptin receptors (distribution of these receptors, cellular pharmacology, etc.), and secondly on developing a second generation of optimised analogues. This project is notably using in silico modelling to screen potential ligands (molecular docking) and to guide the synthesis of new molecules before performing in vitro and in vivo tests.