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Mucolipin Co-deficiency Causes Accelerated Endolysosomal Vacuolation of Enterocytes and Failure-to-Thrive from Birth to Weaning


Intestinal digestion is very different before and after weaning. In adults, extracellular enzymes in the lumen of digestive tract digest proteins and the enterocytes lining the intestine absorb the resulting amino acids. During suckling, proteins reach the intestinal lumen intact, are taken (endocytosed) by enterocytes and degraded inside them. For this intracellular digestion enterocytes prior to weaning have specialized lysosomes with digestive enzymes. Lysosomes are also of biomedical relevance because their partial dysfunction causes ∼50 genetic disorders with a range of symptoms (Lysosomal Storage Disorders; LSDs). We found that enterocytes prior to weaning express two related proteins implicated in certain LSDs (mucolipins 1 and 3) and that their co-absence causes pathological vacuolation of enterocytes, diminished apical endocytosis from the intestinal lumen, diarrhea and delayed growth (failure to thrive) from birth to weaning. Our results implicate lysosomes in neonatal intestinal disorders, a major cause of infant mortality, and suggest transient intestinal dysfunction might affect newborns with LSDs. Hence, we link two large sets of disorders that are presently considered and treated as unrelated. Finally, we propose that the special mechanisms for the uptake and digestion of maternal milk are not unique to mammals, as embryos of oviparous species use a similar mechanism for the digestion of maternally-provided yolk.


Vyšlo v časopise: Mucolipin Co-deficiency Causes Accelerated Endolysosomal Vacuolation of Enterocytes and Failure-to-Thrive from Birth to Weaning. PLoS Genet 10(12): e32767. doi:10.1371/journal.pgen.1004833
Kategorie: Research Article
prolekare.web.journal.doi_sk: https://doi.org/10.1371/journal.pgen.1004833

Souhrn

Intestinal digestion is very different before and after weaning. In adults, extracellular enzymes in the lumen of digestive tract digest proteins and the enterocytes lining the intestine absorb the resulting amino acids. During suckling, proteins reach the intestinal lumen intact, are taken (endocytosed) by enterocytes and degraded inside them. For this intracellular digestion enterocytes prior to weaning have specialized lysosomes with digestive enzymes. Lysosomes are also of biomedical relevance because their partial dysfunction causes ∼50 genetic disorders with a range of symptoms (Lysosomal Storage Disorders; LSDs). We found that enterocytes prior to weaning express two related proteins implicated in certain LSDs (mucolipins 1 and 3) and that their co-absence causes pathological vacuolation of enterocytes, diminished apical endocytosis from the intestinal lumen, diarrhea and delayed growth (failure to thrive) from birth to weaning. Our results implicate lysosomes in neonatal intestinal disorders, a major cause of infant mortality, and suggest transient intestinal dysfunction might affect newborns with LSDs. Hence, we link two large sets of disorders that are presently considered and treated as unrelated. Finally, we propose that the special mechanisms for the uptake and digestion of maternal milk are not unique to mammals, as embryos of oviparous species use a similar mechanism for the digestion of maternally-provided yolk.


Zdroje

1. HenningSJ (1985) Ontogeny of enzymes in the small intestine. Annu Rev Physiol 47: 231–245.

2. BaquiAH, BlackRE, ArifeenSE, HillK, MitraSN, et al. (1998) Causes of childhood deaths in Bangladesh: results of a nationwide verbal autopsy study. Bull World Health Organ 76: 161–171.

3. GonnellaPA, NeutraMR (1984) Membrane-bound and fluid-phase macromolecules enter separate prelysosomal compartments in absorptive cells of suckling rat ileum. J Cell Biol 99: 909–917.

4. CornellR, PadykulaHA (1969) A cytological study of intestinal absorption in the suckling rat. Am J Anat 125: 291–315.

5. WilsonJM, WhitneyJA, NeutraMR (1991) Biogenesis of the apical endosome-lysosome complex during differentiation of absorptive epithelial cells in rat ileum. J Cell Sci 100(Pt 1): 133–143.

6. HiranoS, KataokaK (1986) Histogenesis of the mouse jejunal mucosa, with special reference to proliferative cells and absorptive cells. Arch Histol Jpn 49: 333–348.

7. PuertollanoR, KiselyovK (2009) TRPMLs: in sickness and in health. Am J Physiol Renal Physiol 296: F1245–1254.

8. BachG, ZeeviDA, FrumkinA, Kogot-LevinA (2010) Mucolipidosis type IV and the mucolipins. Biochem Soc Trans 38: 1432–1435.

9. VenkatachalamK, HofmannT, MontellC (2006) Lysosomal localization of TRPML3 depends on TRPML2 and the mucolipidosis-associated protein TRPML1. J Biol Chem 281: 17517–17527.

10. BargalR, AvidanN, Ben-AsherE, OlenderZ, ZeiglerM, et al. (2000) Identification of the gene causing mucolipidosis type IV. Nat Genet 26: 118–123.

11. WakabayashiK, GustafsonAM, SidranskyE, GoldinE (2011) Mucolipidosis type IV: an update. Mol Genet Metab 104: 206–213.

12. VenugopalB, BrowningMF, Curcio-MorelliC, VarroA, MichaudN, et al. (2007) Neurologic, gastric, and opthalmologic pathologies in a murine model of mucolipidosis type IV. Am J Hum Genet 81: 1070–1083.

13. MicsenyiMC, DobrenisK, StephneyG, PickelJ, VanierMT, et al. (2009) Neuropathology of the Mcoln1(−/−) knockout mouse model of mucolipidosis type IV. J Neuropathol Exp Neurol 68: 125–135.

14. BachG (2001) Mucolipidosis type IV. Mol Genet Metab 73: 197–203.

15. CastiglioniAJ, RemisNN, FloresEN, Garcia-AnoverosJ (2011) Expression and vesicular localization of mouse Trpml3 in stria vascularis, hair cells, and vomeronasal and olfactory receptor neurons. J Comp Neurol 519: 1095–1114.

16. NagataK, ZhengL, MadathanyT, CastiglioniAJ, BartlesJR, et al. (2008) The varitint-waddler (Va) deafness mutation in TRPML3 generates constitutive, inward rectifying currents and causes cell degeneration. Proc Natl Acad Sci U S A 105: 353–358.

17. XuH, DellingM, LiL, DongX, ClaphamDE (2007) Activating mutation in a mucolipin transient receptor potential channel leads to melanocyte loss in varitint-waddler mice. Proc Natl Acad Sci U S A 104: 18321–18326.

18. Di PalmaF, BelyantsevaIA, KimHJ, VogtTF, KacharB, et al. (2002) Mutations in Mcoln3 associated with deafness and pigmentation defects in varitint-waddler (Va) mice. Proc Natl Acad Sci U S A 99: 14994–14999.

19. GrimmC, CuajungcoMP, van AkenAF, SchneeM, JorsS, et al. (2007) A helix-breaking mutation in TRPML3 leads to constitutive activity underlying deafness in the varitint-waddler mouse. Proc Natl Acad Sci U S A 104: 19583–19588.

20. KimHJ, LiQ, Tjon-Kon-SangS, SoI, KiselyovK, et al. (2007) Gain-of-function mutation in TRPML3 causes the mouse Varitint-Waddler phenotype. J Biol Chem 282: 36138–36142.

21. ShenD, WangX, LiX, ZhangX, YaoZ, et al. (2012) Lipid storage disorders block lysosomal trafficking by inhibiting a TRP channel and lysosomal calcium release. Nat Commun 3: 731.

22. WeissN (2012) Cross-talk between TRPML1 channel, lipids and lysosomal storage diseases. Commun Integr Biol 5: 111–113.

23. FalardeauJL, KennedyJC, AciernoJSJr, SunM, StahlS, et al. (2002) Cloning and characterization of the mouse Mcoln1 gene reveals an alternatively spliced transcript not seen in humans. BMC Genomics 3: 3.

24. PachaJ (2000) Development of intestinal transport function in mammals. Physiol Rev 80: 1633–1667.

25. MuncanV, HeijmansJ, KrasinskiSD, BullerNV, WildenbergME, et al. (2011) Blimp1 regulates the transition of neonatal to adult intestinal epithelium. Nat Commun 2: 452.

26. HarperJ, MouldA, AndrewsRM, BikoffEK, RobertsonEJ (2011) The transcriptional repressor Blimp1/Prdm1 regulates postnatal reprogramming of intestinal enterocytes. Proc Natl Acad Sci U S A 108: 10585–10590.

27. de Santa BarbaraP, van den BrinkGR, RobertsDJ (2003) Development and differentiation of the intestinal epithelium. Cell Mol Life Sci 60: 1322–1332.

28. Garcia-AnoverosJ, WiwatpanitT (2014) TRPML2 and mucolipin evolution. Handb Exp Pharmacol 222: 647–658.

29. GreggRE, WetterauJR (1994) The molecular basis of abetalipoproteinemia. Curr Opin Lipidol 5: 81–86.

30. YoungSG, ChamCM, PitasRE, BurriBJ, ConnollyA, et al. (1995) A genetic model for absent chylomicron formation: mice producing apolipoprotein B in the liver, but not in the intestine. J Clin Invest 96: 2932–2946.

31. FujitaM, BabaR, ShimamotoM, SakumaY, FujimotoS (2007) Molecular morphology of the digestive tract; macromolecules and food allergens are transferred intact across the intestinal absorptive cells during the neonatal-suckling period. Med Mol Morphol 40: 1–7.

32. LaPlanteJM, YeCP, QuinnSJ, GoldinE, BrownEM, et al. (2004) Functional links between mucolipin-1 and Ca2+-dependent membrane trafficking in mucolipidosis IV. Biochem Biophys Res Commun 322: 1384–1391.

33. TreuschS, KnuthS, SlaugenhauptSA, GoldinE, GrantBD, et al. (2004) Caenorhabditis elegans functional orthologue of human protein h-mucolipin-1 is required for lysosome biogenesis. Proc Natl Acad Sci U S A 101: 4483–4488.

34. DongXP, ShenD, WangX, DawsonT, LiX, et al. (2010) PI(3,5)P(2) controls membrane trafficking by direct activation of mucolipin Ca(2+) release channels in the endolysosome. Nat Commun 1: 38.

35. PiperRC, LuzioJP (2004) CUPpling calcium to lysosomal biogenesis. Trends Cell Biol 14: 471–473.

36. LelouvierB, PuertollanoR (2011) Mucolipin-3 regulates luminal calcium, acidification, and membrane fusion in the endosomal pathway. J Biol Chem 286: 9826–9832.

37. VenkatachalamK, WongCO, MontellC (2012) Feast or famine: Role of TRPML in preventing cellular amino acid starvation. Autophagy 9.

38. WongCO, LiR, MontellC, VenkatachalamK (2012) Drosophila TRPML is required for TORC1 activation. Curr Biol 22: 1616–1621.

39. ThompsonEG, SchaheenL, DangH, FaresH (2007) Lysosomal trafficking functions of mucolipin-1 in murine macrophages. BMC Cell Biol 8: 54.

40. PryorPR, MullockBM, BrightNA, GraySR, LuzioJP (2000) The role of intraorganellar Ca(2+) in late endosome-lysosome heterotypic fusion and in the reformation of lysosomes from hybrid organelles. J Cell Biol 149: 1053–1062.

41. BargalR, BachG (1997) Mucolipidosis type IV: abnormal transport of lipids to lysosomes. J Inherit Metab Dis 20: 625–632.

42. FolkerthRD, AlroyJ, LomakinaI, SkutelskyE, RaghavanSS, et al. (1995) Mucolipidosis IV: morphology and histochemistry of an autopsy case. J Neuropathol Exp Neurol 54: 154–164.

43. MerinS, LivniN, BermanER, YatzivS (1975) Mucolipidosis IV: ocular, systemic, and ultrastructural findings. Invest Ophthalmol 14: 437–448.

44. GoebelHH, KohlschutterA, LenardHG (1982) Morphologic and chemical biopsy findings in mucolipidosis IV. Clin Neuropathol 1: 73–82.

45. Tellez-NagelI, RapinI, IwamotoT, JohnsonAB, NortonWT, et al. (1976) Mucolipidosis IV. Clinical, ultrastructural, histochemical, and chemical studies of a case, including a brain biopsy. Arch Neurol 33: 828–835.

46. RoessAA, WinchPJ, AliNA, AkhterA, AfrozD, et al. (2013) Animal husbandry practices in rural Bangladesh: potential risk factors for antimicrobial drug resistance and emerging diseases. Am J Trop Med Hyg 89: 965–970.

47. FaresH, GreenwaldI (2001) Regulation of endocytosis by CUP-5, the Caenorhabditis elegans mucolipin-1 homolog. Nat Genet 28: 64–68.

48. KimHJ, SoyomboAA, Tjon-Kon-SangS, SoI, MuallemS (2009) The Ca(2+) channel TRPML3 regulates membrane trafficking and autophagy. Traffic 10: 1157–1167.

49. LimaWC, LeubaF, SoldatiT, CossonP (2012) Mucolipin controls lysosome exocytosis in Dictyostelium. J Cell Sci 125: 2315–2322.

50. SamieM, WangX, ZhangX, GoschkaA, LiX, et al. (2013) A TRP channel in the lysosome regulates large particle phagocytosis via focal exocytosis. Dev Cell 26: 511–524.

51. CampbellEM, FaresH (2010) Roles of CUP-5, the Caenorhabditis elegans orthologue of human TRPML1, in lysosome and gut granule biogenesis. BMC Cell Biol 11: 40.

52. BeniniA, BozzatoA, MantovanelliS, CalvariniL, GiacopuzziE, et al. (2013) Characterization and expression analysis of mcoln1.1 and mcoln1.2, the putative zebrafish co-orthologs of the gene responsible for human mucolipidosis type IV. Int J Dev Biol 57: 85–93.

53. Thisse B, Thisse C (1994) Fast Release Clones: A High Throughput Expression Analysis. ZFIN Direct Data Submission (http://zfin.org). Zebrafish Model Organism Database (ZFIN): University of Oregon, Eugene, OR 97403–5274.

54. LentzTL, TrinkausJP (1967) A fine structural study of cytodifferentiation during cleavage, blastula, and gastrula stages of Fundulus heteroclitus. J Cell Biol 32: 121–138.

55. SIREMF, BABINPJ, VERNIERJM (1994) Involvement of the Lysosomal System in Yolk Protein Deposit and Degradation During Vitellogenesis and Embryonic Development in Trout. THE JOURNAL OF EXPERIMENTAL ZOOLOGY 269: 69–83.

56. LindquistS, HernellO (2010) Lipid digestion and absorption in early life: an update. Curr Opin Clin Nutr Metab Care 13: 314–320.

57. MansonWG, WeaverLT (1997) Fat digestion in the neonate. Arch Dis Child Fetal Neonatal Ed 76: F206–211.

58. SamieMA, GrimmC, EvansJA, Curcio-MorelliC, HellerS, et al. (2009) The tissue-specific expression of TRPML2 (MCOLN-2) gene is influenced by the presence of TRPML1. Pflugers Arch 459: 79–91.

59. DugganA, MadathanyT, de CastroSC, GerrelliD, GuddatiK, et al. (2008) Transient expression of the conserved zinc finger gene INSM1 in progenitors and nascent neurons throughout embryonic and adult neurogenesis. J Comp Neurol 507: 1497–1520.

60. Schaeren-WiemersN, Gerfin-MoserA (1993) A single protocol to detect transcripts of various types and expression levels in neural tissue and cultured cells: in situ hybridization using digoxigenin-labelled cRNA probes. Histochemistry 100: 431–440.

61. BaquiAA, MeillerTF, ChonJJ, TurngBF, FalklerWAJr (1998) Interleukin-6 production by human monocytes treated with granulocyte-macrophage colony-stimulating factor in the presence of lipopolysaccharide of oral microorganisms. Oral Microbiol Immunol 13: 173–180.

62. BaquiAA, MeillerTF, TurngBF, KelleyJI, FalklerWAJr (1998) Functional changes in THP-1 human monocytic cells after stimulation with lipopolysaccharide of oral microorganisms and granulocyte macrophage colony stimulating factor. Immunopharmacol Immunotoxicol 20: 493–518.

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