Peptide Transporters in the Primary Gastrointestinal Tract of Pre-Feeding Mozambique Tilapia Larva
Fish larvae differ greatly from the adult form in their morphology and organ functionality. The functionality of the gastrointestinal tract depends on the expression of various pumps, transporters, and channels responsible for feed digestion and nutrients absorption. During the larval period, the ga...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2019-07-01
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| Series: | Frontiers in Physiology |
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| Online Access: | https://www.frontiersin.org/article/10.3389/fphys.2019.00808/full |
| _version_ | 1828174941816619008 |
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| author | Pazit Con Pazit Con Tali Nitzan Tatiana Slosman Sheenan Harpaz Avner Cnaani |
| author_facet | Pazit Con Pazit Con Tali Nitzan Tatiana Slosman Sheenan Harpaz Avner Cnaani |
| author_sort | Pazit Con |
| collection | DOAJ |
| description | Fish larvae differ greatly from the adult form in their morphology and organ functionality. The functionality of the gastrointestinal tract depends on the expression of various pumps, transporters, and channels responsible for feed digestion and nutrients absorption. During the larval period, the gastrointestinal tract develops from a simple closed tube, into its complex form with differentiated segments, crypts and villi, as found in the adult. In this study, we characterized the expression of three peptide transporters (PepT1a, PepT1b, and PepT2) in the gastrointestinal tract of Mozambique tilapia (Oreochromis mossambicus) larvae along 12 days of development, from pre-hatching to the completion of yolk sac absorption. Gene expression analysis revealed differential and complimentary time-dependent expression of the PepT1 variants and PepT2 along the larval development period. Immunofluorescence analysis showed differential protein localization of the three peptide transporters (PepTs) along the gastrointestinal tract, in a similar pattern to the adult. In addition, PepT1a was localized in mucosal cells in the larvae esophagus, in much higher abundance than in the adults. The results of this study demonstrate specialization of intestinal sections and absorbance potential of the enterocytes prior to the onset of active exogenous feeding, thus pointing to an uncharacterized function and role of the gastrointestinal tract and its transporters during the larval period. |
| first_indexed | 2024-04-12T04:20:04Z |
| format | Article |
| id | doaj.art-7ae3d2b3884c4ec9aa8f8697912eaa9b |
| institution | Directory Open Access Journal |
| issn | 1664-042X |
| language | English |
| last_indexed | 2024-04-12T04:20:04Z |
| publishDate | 2019-07-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Physiology |
| spelling | doaj.art-7ae3d2b3884c4ec9aa8f8697912eaa9b2022-12-22T03:48:15ZengFrontiers Media S.A.Frontiers in Physiology1664-042X2019-07-011010.3389/fphys.2019.00808461314Peptide Transporters in the Primary Gastrointestinal Tract of Pre-Feeding Mozambique Tilapia LarvaPazit Con0Pazit Con1Tali Nitzan2Tatiana Slosman3Sheenan Harpaz4Avner Cnaani5Department of Poultry and Aquaculture, Institute of Animal Science, Agricultural Research Organization, Rishon LeZion, IsraelDepartment of Animal Sciences, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, IsraelDepartment of Poultry and Aquaculture, Institute of Animal Science, Agricultural Research Organization, Rishon LeZion, IsraelDepartment of Poultry and Aquaculture, Institute of Animal Science, Agricultural Research Organization, Rishon LeZion, IsraelDepartment of Poultry and Aquaculture, Institute of Animal Science, Agricultural Research Organization, Rishon LeZion, IsraelDepartment of Poultry and Aquaculture, Institute of Animal Science, Agricultural Research Organization, Rishon LeZion, IsraelFish larvae differ greatly from the adult form in their morphology and organ functionality. The functionality of the gastrointestinal tract depends on the expression of various pumps, transporters, and channels responsible for feed digestion and nutrients absorption. During the larval period, the gastrointestinal tract develops from a simple closed tube, into its complex form with differentiated segments, crypts and villi, as found in the adult. In this study, we characterized the expression of three peptide transporters (PepT1a, PepT1b, and PepT2) in the gastrointestinal tract of Mozambique tilapia (Oreochromis mossambicus) larvae along 12 days of development, from pre-hatching to the completion of yolk sac absorption. Gene expression analysis revealed differential and complimentary time-dependent expression of the PepT1 variants and PepT2 along the larval development period. Immunofluorescence analysis showed differential protein localization of the three peptide transporters (PepTs) along the gastrointestinal tract, in a similar pattern to the adult. In addition, PepT1a was localized in mucosal cells in the larvae esophagus, in much higher abundance than in the adults. The results of this study demonstrate specialization of intestinal sections and absorbance potential of the enterocytes prior to the onset of active exogenous feeding, thus pointing to an uncharacterized function and role of the gastrointestinal tract and its transporters during the larval period.https://www.frontiersin.org/article/10.3389/fphys.2019.00808/fullPepT1PepT2larvaeoreochromisgastrointestinal tract |
| spellingShingle | Pazit Con Pazit Con Tali Nitzan Tatiana Slosman Sheenan Harpaz Avner Cnaani Peptide Transporters in the Primary Gastrointestinal Tract of Pre-Feeding Mozambique Tilapia Larva Frontiers in Physiology PepT1 PepT2 larvae oreochromis gastrointestinal tract |
| title | Peptide Transporters in the Primary Gastrointestinal Tract of Pre-Feeding Mozambique Tilapia Larva |
| title_full | Peptide Transporters in the Primary Gastrointestinal Tract of Pre-Feeding Mozambique Tilapia Larva |
| title_fullStr | Peptide Transporters in the Primary Gastrointestinal Tract of Pre-Feeding Mozambique Tilapia Larva |
| title_full_unstemmed | Peptide Transporters in the Primary Gastrointestinal Tract of Pre-Feeding Mozambique Tilapia Larva |
| title_short | Peptide Transporters in the Primary Gastrointestinal Tract of Pre-Feeding Mozambique Tilapia Larva |
| title_sort | peptide transporters in the primary gastrointestinal tract of pre feeding mozambique tilapia larva |
| topic | PepT1 PepT2 larvae oreochromis gastrointestinal tract |
| url | https://www.frontiersin.org/article/10.3389/fphys.2019.00808/full |
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